Most Read articles

Published in last 1 year |  In last 2 years |  In last 3 years |  All

In last 3 years

Please wait a minute...


For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails

Select

Current situation and development suggestions of aquaculture commercial breeding in China HAN Feng, SUN Guangwei, SHI Bo, ZHAO Ming, LIU Ming, ZHENG Yuanyuan, PENG Ruibing Journal of Fisheries Research    2022, 44 (4): 387-394.   DOI: 10.14012/i.cnki.fjsc.2022.04.010 Abstract （1463）   HTML （2）    PDF （1319KB）（377）       Knowledge map    Save Aquatic seed industry is the cornerstone of the development of aquaculture.Promoting the construction of commercial seed breeding system can solve the prominent problem of the separation between scientific research and market in the traditional breeding system.In order to further promote the development of aquatic commercial breeding,this paper analyzed the development status and shortcomings of China’s aquatic seed industry enterprises through literature query,data statistics and case comparison.It was considered that the development momentum of China’s aquatic seed industry enterprises was good,which was reflected in the improvement of enterprise breeding awareness,the effective application of seed conservation and control technology,and the diversity of commercial breeding forms.At the same time,China’s aquatic seed industry enterprises also had problems such as weak enterprise competitiveness,development potential and risk resistance,which were reflected in weak independent innovation ability,less investment in breeding R & D,small enterprise scale and so on.In this regard,we proposed to further enhance the competitiveness of China’s aquatic seed industry and promote the commercial development of aquatic breeding by formulating breeding innovation strategies from the two aspects of breeding objects and breeding process,extending vertically and broadening the seed industry chain horizontally. Table and Figures | Reference | Related Articles | Metrics

Select

Relationship between body length and body weight of Schizothorax biddulphi Journal of Fisheries Research    2021, 43 (4): 403-409.   DOI: 10.14012/j.cnki.fjsc.2021.04.007 Abstract （839）      PDF （2388KB）（476）       Knowledge map    Save This paper aims at discussing the relationship between body length and body weight of Schizothorax biddulphi, to provide theoretical support for the rational utilization and protection of S. biddulphi. Based on the survey data of the Tarim River Basin in May 2018, we collected the body length and body weight data in the laboratory. Using forecast regressions method to fit expression of body length-weight power function, relative fatness of S. biddulphi and their impact factors were analyzed. The results were as follows: the female groups were less than male groups in body length and body weight, while the body length locus in the two populations were in fitted normal distribution, and there's no significant difference between the two groups; females were higher than males, and there's a significant difference between them; there was a significant correlation between body length, sex and condition factor (P＜0.05), while body length-weight equation of females could be described by the equations of W=0.000 023×L2.866 8 (r=0.976 8), and males could be described by the equations of W=0.000 049×L2.7013 (r=0.952 9). Related Articles | Metrics

Select

The temperature tolerance of ventral hippocampus and the effect of different temperatures on its growth Journal of Fisheries Research    2021, 43 (5): 480-486.   DOI: 10.14012/j.cnki.fisc.2021.05.005 Abstract （829）      PDF （1758KB）（408）       Knowledge map    Save This study took three sizes of Hippocampus abdominalis as the research object to explore its temperature tolerance and observe its growth under different temperature conditions. The water temperature was set as 16℃ and increased or decreased by (1~2)℃/d in the present study. The results showed that the semi-lethal high temperature of three sizes of H. abdominalis were 26.2℃, 26.7℃ and 28..2℃, respectively; semi-lethal low temperatures were 4.9℃, 3.9℃ and 3.1℃, respectively. The maximum temperature limits of three sizes of H. abdominalis were 26.9°C, 27.2°C and 28.7°C, respectively, the minimum temperature limits were 3.2°C, 2.8°C and 2.0°C, respectively. The temperature tolerance amplitude were 23.7°C, 24.4°C and 26.7°C, respectively. The five temperatures of 10℃, 13℃, 16℃, 19℃ and 22℃ were used to culture H. abdominalis for 84 days, the results showed that the survival rate and specific growth rate of the 16℃ were 72.22% and 1.84%, respectively, which significantly higher than the 10℃, 13℃ and 22℃. The specific growth rate had no significant difference between 19℃ and 16℃, but the survival rate of 19℃ was only 63.33%. The optimal culture temperature of H. abdominalis was 16°C according to the survival rate and specific growth rate of experiment. Related Articles | Metrics

Select

Comparative study on sex differentially expressed genes in Trionyx sinensis Journal of Fisheries Research    2021, 43 (4): 339-356.   DOI: 10.14012/j.cnki.fjsc.2021.04.001 Abstract （776）      PDF （4492KB）（654）       Knowledge map    Save In order to obtain sex-differential expression genes and explore the sex determination mechanism of Trionyx sinensis, we sequenced the transcriptome of testis and ovary of T. sinensis by RNA-seq and obtained clean data of 21 494 396 400 bp and 24 605 142 600 bp, respectively. A total of 10 145 differentially expressed genes were obtained, of which 4 034 were up-regulated in ovaries and 6 111 were down-regulated in ovaries. Through GO, KEGG and protein interaction analysis, 117 genes with sex -different expression were obtained in the study of the sex-difference of soft-shuttles. The sex-related genes such as Foxl2, Sox3, Sox7, Bmp4, Csf1, Wnk2, Mtmr4, Gsc, Mr2f2, Fgf9, Tgfβ2, Tgfβ3, Rara, Smd2, Smd3 and Smad5 were detected. The sex-related genes with high expression in males were Dmrt1, Amh, Sox30, Cct4, Cct5, Cldn11, Crem, Dhcr24, Dnaii, Dynll1, Gabarap, Herc4, Herpud2, Hexb, Hook1, Hormad1 and Smc4. At the same time Bmp4 regulated the expression of Foxl2 through Smad signaling pathway and Foxl2 gene was a marker gene for female physiological sex of T. sinensis. Related Articles | Metrics

Select

Analysis of the genetic diversity and sequence variation of mitochondrial COⅠgene from three populations of Macrobrachium rosenbergii JIANG Fei, DAI Xilin Journal of Fisheries Research    2023, 45 (1): 8-13.   DOI: 10.14012/j.cnki.fjsc.2023.01.002 Abstract （660）   HTML （3）    PDF （1100KB）（254）       Knowledge map    Save In order to investigate the genetic diversity among three populations of Macrobrachium rosenbergii collected from Shanghai breeding population (SC), Zhejiang cultured population (ZJ) and Thailand wild population (TL), the mitochondrial sequences of the COⅠ gene in the three populations were amplified and determined by PCR and sequencing. The result showed that 8 nucleotide sites and 4 haplotypes were found in the 458 bp long partial gene segment. The mean content of A+T (54.4%) was higher than G+C (45.7%). Genetic variation parameters showed the population of highest haplotype diversity was TL population (Hd=0.733), the population of highest nucleotide diversity was ZJ population (π=0.005). AMOVA showed that genetic variations among populations (74.5%) was higher than that within populations (25.5%). The tendency of molecular phylogenetic trees which were constructed by NJ and UPMGA method was similar. SC population and ZJ population were the closest genetically, and they clustered into a small branch, then with TL population. These findings were expected to provide reference information for the protection and utilization of germplasm resources of M.rosenbergii. Table and Figures | Reference | Related Articles | Metrics

Select

Studying on suitable light intensity,cultivation density and development degree for the gametophyte advance development of Saccharina japonica ZHANG Xichang, ZHAO Ningning, LIU Jianbo, LENG Xiaofei, WANG Fasheng Journal of Fisheries Research    2022, 44 (4): 345-355.   DOI: 10.14012/i.cnki.fjsc.2022.04.005 Abstract （638）   HTML （0）    PDF （2533KB）（99）       Knowledge map    Save This study sought to investigate the optimum light intensity,cultivation density and the gametophyte advance development degree of Saccharina japonica,in order to provide technical support for gametophyte seedling.The suitable light intensity and cultivation density for the gametophyte advance development were determined by inspecting the female gametophyte development rate,ovulation rate and seminal vesicle formation rate.The suitable degree of gametophyte advance development was determined by inspecting the emergence rate and emergence time.It was found that the advance development speed of gametophyte under 37.5~62.5 μmol·m-2s-1 was significantly faster than that under 25.0 μmol·m-2s-1 in the condition of(13±1)℃ and 10.0 g·L-1.The advance development speed of gametophyte in the density of 5.0~10.0 g·L-1 was significantly faster than that in the density of 15.0~20.0 g·L-1 in the condition of(13±1)℃ and 37.5 μmol·m-2s-1,and only partial gametophyte developed,some gametophyte grew filament in the density of 15.0~20.0 g·L-1.The emergence test was carried out after the gametophyte was advance developed under the conditions of(13±1)℃,37.5 μmol·m-2s-1 and 10.0 g·L-1.The emergence rate were over 96.0% after 5 days of cultivation when the gametophyte was advance developed for 11~12 d,while the emergence rate was 90.7% after 9 days of cultivation when the gametophyte was without advance developed,which was 4 days later than the advance developed gametophyte.As a result,the suitable condition of light intensity and cultivation density were 37.5 μmol·m-2s-1 and 10.0 g·L-1 for gametophyte advance development of S.japonica,while the suitable advance development time was 11~12 d. Table and Figures | Reference | Related Articles | Metrics

Select

Correlation and path coefficient analysis on body weight and morphometric traits of Hexagrammos agrammus at 6-month-old WANG Xiaolong, LI Li, WANG Xue, JIAN Yuxia, GAO Fengxiang, GUO Wen, SONG Zongcheng, YUE Xinlu, HU Fawen Journal of Fisheries Research    2022, 44 (1): 52-59.   DOI: 10.14012/j.cnki.fjsc.2022.01.006 Abstract （628）   HTML （0）    PDF （972KB）（263）       Knowledge map    Save To study the effect of morphological traits on body weight in the early stage,and to provide reference for the selection and breeding of fine varieties,the total length(X1),body length(X2),head length(X3),trunk length(X4),caudal stalk length(X5),caudal stalk height(X6),body height(X7),body width(X8) and body weight(Y) were measured and analyzed by means of correlation analysis,regression analysis and path analysis.The results showed that the correlations between the 8 morphological traits and body weight reached a very significant level(P<0.01).Path analysis showed that body length,body width,full length,head length and body height were the main morphological traits that affected body weight.The determination coefficient showed that the single determination coefficient of body length was the largest,which was 0.299,while the joint determination coefficient of body length and full length was the largest,which was 0.244,and the total determination coefficient was 0.923.The results showed that all the main morphological characters which had influence on the body weight of 6-month-old spotted head fish were included.The optimal regression equation was established as Y=-8.900+0.467X1+1.247X2+0.274X3+0.169X7+1.866X8.In the breeding process of 6-month-old spotted head fish,body length and body length should be considered as well as body weight. Table and Figures | Reference | Related Articles | Metrics

Select

Artificial domestication and reproduction techniques of Tachypleus tridentatus CHEN Zhi, WENG Zhaohong, ZOU Lizhen, ZHOU Honglei, JIANG Yixiong, FANG Chuihong, LI Yuhong, KWAN Kit Yue Journal of Fisheries Research    2023, 45 (3): 246-253.   DOI: 10.14012/j.cnki.fjsc.2023.03.004 Abstract （614）   HTML （1）    PDF （1500KB）（262）       Knowledge map    Save To restore the population of the endangered species Tachypleus tridentatus,artificial domestication and breeding research of T.tridentatus was carried out in Luoyuan County,Fujian Province in 2021—2022.Following the observation results of their natural spawning and nursery grounds,the simulated spawning environment was constructed,and the mating pairs were induced to spawn naturally in the artificial environment.The spawning habitat preferences and ecological requirements for T.tridentatus were determined through artificial incubation and seedling cultivation.This paper summarized the artificial domestication and propagation technology of horseshoe crab,and analyzed the significance of artificial domestication and natural propagation of T.tridentatus,providing theoretical basis for species conservation by the protection and restoration of T.tridentatus populations and artificial incubation in Fujian coastal area. Table and Figures | Reference | Related Articles | Metrics

Select

Research advanced of breeding methods on microalgae ZHOU Linlin, GUO Chentao, ZHONG Chenhui, LIN Qi Journal of Fisheries Research    2023, 45 (2): 182-191.   DOI: 10.14012/i.cnki.fjsc.2023.02.011 Abstract （605）   HTML （1）    PDF （1104KB）（354）       Knowledge map    Save Microalgae is a kind of unicellular photosynthetic autotrophic eukaryotic plant, which grows rapidly and processes high photosynthetic efficiency.It can provide a lot of high value products, such as protein, polyunsaturated fatty acids and bioactive compounds which are important sources of health care, aquaculture and biofuels.In order to improve productivity, microalgae breeding technology has been developed to explore the strains which have larger biomass, more lipid, and the ability of stress resistance.The article summarized the advantages and disadvantages of various breeding technologies and research advanced, in order to provide a reference for the development of microalgae breeding. Table and Figures | Reference | Related Articles | Metrics

Select

Relationship between the water temperature of the Kuroshio, Oyashio and Kuroshio-Oyashio Transition Zone and Cololabis saira resource abundance ZHANG Peichao ZHANG Xiaomin XU Bingqing LI Shaowen Journal of Fisheries Research    2021, 43 (6): 562-570.   DOI: 10.14012/j.cnki.fjsc.2021.06.02 Abstract （507）      PDF （2952KB）（399）       Knowledge map    Save Based on the 1995—2014 global Cololabis saira catch data collected by North Pacific Fisheries Commission，sea surface temperature (SST) and sea surface temperature anomaly (SSTA) of the Kuroshio Oyashio and Kuroshio-Oyashio Transition Zone from the website of Hawaii University, this paper analyzed the relationship between C. saira resource abundance and SST and SSTA of the Kuroshio, Oyashio and Kuroshio-Oyashio Transition Zone by using the method of grey relation analysis and frequency statistic. The results indicated that the inter-annual variation of C. saira dramatically presented an “on and off-year” phenomenon. The correlation of temperature factor in each month and the saury resource abundance correlation was high and all above 0.6, the order was in turn: SSTAKC1＞SSTAOC7＞SSTAOC9＞SSTATZ6＞SSTATZ5＞SSTATZ4＞SSTAOC8＞SSTAKC2＞SSTOC9＞SSTKC3＞SSTKC2＞SSTTZ6＞SSTTZ5＞SSTOC8＞SSTKC1＞SSTTZ4＞SSTOC7＞SSTAKC3, and SSTA correlation degree was generally higher than that of SST. The optimum range of SSTA and SST were 0～1.5℃ and 14～20℃, respectively. According to K-S test (P<0.01), the range of SSTA and SST were reasonable. The research content could help the Chinese mainland master saury resource abundance abnormal changes ahead of time, which helps to arrange fishing effort reasonably. Reference | Related Articles | Metrics

Select

Effects of acute hypoxic stress on Eleutheronema tetradactylum gill organ and liver tissue damage LIN Xin, OU Youjun, WEN Jiufu, XU Shuyu, LI Jia'er Journal of Fisheries Research    2023, 45 (1): 14-22.   DOI: 10.14012/j.cnki.fjsc.2023.01.003 Abstract （467）   HTML （1）    PDF （12122KB）（104）       Knowledge map    Save To investigate the effects of acute hypoxic stress on the gill organs and liver tissue damage of juvenile Eleutheronema tetradactylum, a 2 h acute hypoxic stress experiment was conducted with 2 mg/L of dissolved oxygen in the water. Then the gills and liver organs of E.tetradactylum were observed using conventional paraffin sections and HE staining as well as electron microscopic techniques. The results displayed contraction of the blood sinuses in the gill filaments of E.tetradactylum under acute hypoxic stress, with dilated ends; longer gill lamellae, larger intervals and swollen and bulging parts of the epithelium. The parietal crypt of mitochondria-rich cells changed from concave to flat and the intracellular mitochondrial morphology changes from oval to round. Liver tissue showed hepatocyte necrosis and fusion of hepatocytes. Hypoxic stress had a large effect on the gill and liver tissues of E.tetradactylum and caused structural damage to the tissues by 2 h. Table and Figures | Reference | Related Articles | Metrics

Select

Analysis and development suggestions of Larimichthys crocea industry of China in 2020 HAN Chengyi, WU Xiongfei, XU Binfu, HUANG Guangliang, LIANG Anwei, CHEN Jia, LIU Jiafu, CHEN Qingrong Journal of Fisheries Research    2022, 44 (4): 395-406.   DOI: 10.14012/i.cnki.fjsc.2022.04.011 Abstract （441）   HTML （0）    PDF （1541KB）（267）       Knowledge map    Save During the last decade of the 20th century,the artificial breeding of Larimichthys crocea accomplished its industrialization in China.Since then,the breeding scale and industrial division of the L.crocea industry have been continuously upgraded,forming a perfected industrial chain covering supplying the fishery necessities(fry,feeding stuff,facilities,etc.) and acquisition,trade,processing and export of the marketable fish.The supporting industries such as logistics,catering and tourism have also been gradually formed.In this report,industry experts and practitioners organized by the L.crocea branch of the China Fisheries Association conducted a comprehensive investigation of China’s L.crocea industry status in 2020,then summarized and analyzed it from ten aspects:seedling breeding,farm distribution and output,feeding stuff usage,major epidemic diseases,quality and safety,yields and market,Corona Virus Disease-19 impact,brand culture construction,supporting policies,financial and insurance services,and existing problems;gived countermeasures and suggestions on the industrial development for reference.The survey results showed that there were some problems in the development of L.crocea industry in China,such as low coverage rate of fine varieties,illegal drug use,low level of intensive and deep processing. Suggestions were put forward to promote the healthy and sustainable development of L.crocea industry in China by vigorously developing seed industry projects,standardizing industrial behaviors,increasing the proportion of medium-sized products,improving the processing rate,winning government support and creating industrial culture. Table and Figures | Reference | Related Articles | Metrics

Select

Research progress on gut microbial diversity of fish and its relationship with environmental factors XIANG Jiali, LI Yuan, SONG Puqing, LIU Shigang, WANG Rui, LI Hai, MIAO Xing, ZHANG Ran, LIN Longshan Journal of Fisheries Research    2022, 44 (2): 187-195.   DOI: 10.14012/j.cnki.fjsc.2022.02.010 Abstract （413）   HTML （1）    PDF （1063KB）（484）       Knowledge map    Save In the early days,it was thought that there were few simple microbial communities in the fish gut,but with the development of fish gut microecology,it was gradually recognized that there were a large number of diverse microbial communities in the fish gut.Complex living environments,different developmental stages,and variable food sources can lead to changes in the diversity and structure of fish gut microorganisms.The microecosystem formed by fish gut microbes and their habitat is able to maintain the host’s gut health when it is in dynamic balance.Numerous studies have shown that microecosystem in homeostasis can regulate the balance of gut microbial communities and improve the composition of gut microbial communities,thus promoting fish growth and development,nutrient metabolism,immune regulation and other processes.This paper reviewed the research methods,diversity and functions of fish gut microorganisms,and summarized the effects of environmental factors such as temperature,salinity and food in water on fish gut microorganisms,in order to provide inspiration and reference for future research development of fish gut microorganisms. Reference | Related Articles | Metrics

Select

Effect of salinity, pH and ammonia nitrogen on growth and survival to juvenile Tapes conspersus WU Qisheng QI Jianfei NING Yue LUO Juan ZENG Zhinan Journal of Fisheries Research    2021, 43 (6): 621-627.   DOI: 10.14012/j.cnki.fjsc.2021.06.009 Abstract （409）      PDF （3089KB）（349）       Knowledge map    Save In order to explore the adaptability of juvenile Tapes conspersus to salinity, pH and ammonia nitrogen, this study analyzed effects of different salinity (10, 15, 20, 25, 30, 35, 40), pH (2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0), and ammonia nitrogen (0.5, 1, 5, 10, 20, 50, 100, 250 mg/L) on the growth and survival of T. conspersus. The results showed that the optimum salinity for the growth and survival of T. conspersus was 25~35; the suitable pH for survival of the juveniles was 4.0~8.5, and the juvenile shellfish exhibited a higher tolerance to low pH than to high pH; the survival rate of juveniles was 100% when the concentration of ammonia nitrogen was in the range of 0.5~10.0 mg/L. When the concentration of ammonia nitrogen was higher than 20.0 mg/L, the survival rate of juvenile shellfish decreased significantly with the increase of ammonia nitrogen concentration. Within 24 hours, the juveniles of all groups survived well under different concentrations of ammonia nitrogen, and the survival rate was more than 98.33%. At 48 h, 72 h and 96 h, the LC50 of juveniles were 123.68 mg/L, 77.36 mg/L and 49.00 mg/L, respectively, and the safe concentrations were 12.37 mg/L, 7.74 mg/L and 4.90 mg/L, respectively. Related Articles | Metrics

Select

Effects of recirculating aquaculture model on water quality and growth performance of Litopenaeus vannamei NIU Jiangbo, WU Zhaojun, LI Yasong, KANG Qiuping, XU Bo, GUO Bing, JIANG Liping, SONG Xiangguo, LIANG Qinlang Journal of Fisheries Research    2023, 45 (3): 287-296.   DOI: 10.14012/j.cnki.fjsc.2023.03.009 Abstract （391）   HTML （1）    PDF （3635KB）（190）       Knowledge map    Save By analyzing the growth performance and water quality index differences of Litopenaeus vannamei under the recirculating aquaculture mode,the feasibility of the recirculating aquaculture mode in the aquaculture production was explored.The initial body mass of L.vannamei was (2.39±0.20) g.In this study,a recirculating aquaculture group (RAG) and a traditional industrial aquaculture group (IAG) were set up,with 3 replicates in each group.750 individuals of L.vannamei were stocked per cubic meter,and the salinity of the cultured water was 18.The aquaculture period was from July 23 to September 10,2022,lasting for 50 days.The results showed that the average water temperature of RAG was significantly higher than that of IAG (P<0.05),and the dissolved oxygen was 2.45% higher than that of IAG.The ammonia nitrogen of RAG was significantly lower than that of IAG during the culture period (P<0.01),and the nitrite nitrogen was 24.29% lower than that of IAG after the system matured and stabilized (12 days).Although the survival rate of RAG was 2.17% lower than that of IAG,but the final body mass,unit yield,specific growth rate and weight gain rate were all higher than those of IAG.The feeding rate and feed conversion rate of RAG were lower than those of IAG,but did not show significant difference (P>0.05),and the specific growth rate and geometric mean mass of each group showed a significant negative correlation (P<0.05).The comprehensive results showed that the recirculating aquaculture mode could effectively control the key water quality factor indicators at a low level,which played an important role in water resource conservation and environmental protection.In addition,in the practice of aquaculture production,the growth and production of L.vannamei could also be promoted to a certain extent,and this model had strong feasibility. Table and Figures | Reference | Related Articles | Metrics

Select

Studies on feeding and growth characteristic of larva and juvenile of Opsariichthys bidens LIU Yinhua Journal of Fisheries Research    2022, 44 (4): 365-373.   DOI: 10.14012/i.cnki.fjsc.2022.04.007 Abstract （377）   HTML （0）    PDF （1043KB）（113）       Knowledge map    Save The feeding and the growth characteristic of larva and juvenile of Opsariichthys bidens were studied.The results showed that larva and juvenile of O.bidens were breeded under condition of water temperature 26~30℃.36.67% of the larva opened their mouth and started to feed after age of 3 days.The feeding rate of larva and juvenile was 100.00% after 5 days of age,the average rate of larva and juvenile in the full stomach was 99.20% after 6 days of age,and the relationship between feeding amount(y) and body weight(W) was calculated to be y= -0.000 4 W2+ 0.214 0W-0.200 8.The recommended dietary allowance of the larva and juvenile of O.bidens as 45%~50% of the body weight.The regression equation of total length(Lt) with day age(D) was expressed as Lt=-0.008 1D2+ 0.903 1D +4.159 5.The relationship between the body weight(Wt) and day age(D) was calculated to be W t= 0.075 0D2 +2.027 1D -10.689 0,and total length(Lt) and the body weight(Wt) could be expressed to be Wt= 0.001 3 L_{\mathrm{t}}^{3.609\mathrm{?}8} ,b = 3.609 8,which showed that the growth of larva and juvenile of O.bidens belongs to the type of allometric.The results provided more references for the artificial breeding of O.bidens. Table and Figures | Reference | Related Articles | Metrics

Select

Research progress in culture modes and applications of Isochrysis galbana LI Daogui, CHEN Na, HONG Yuling, LIN Rongzhao, WU Liming, HE Yongjin Journal of Fisheries Research    2022, 44 (3): 294-300.   DOI: 10.14012/j.cnki.fjsc.2022.03.012 Abstract （376）   HTML （1）    PDF （1317KB）（720）       Knowledge map    Save Isochrysis galbana is a sustainable and renewable bio-resource and an important source of natural bioactive compounds.It can provide a wide range of high-value products,such as fucoxanthin,high-quality protein,as well as polyunsaturated fatty acids.These nutrients provide essential dietary nutrients for people and are important sources of health care,aquaculture and biofuels.However,the high cost of microalgae culture has been a limiting factor for the development of the industry.In recent years,the research on the low-cost culture modes and large-scale culture technology of I.galbana was also deepening.In this paper,the research progress on microalgae culture modes and large-scale culture of I.galbana was reviewed,and the functional value development of I.galbana in recent years was summarized,while the future application of I.galbana in functional food,aquaculture,biofuel and other fields was prospected. Table and Figures | Reference | Related Articles | Metrics

Select

Research progress of oyster polyploid Journal of Fisheries Research    2021, 43 (3): 330-338.   DOI: 10.14012/j.cnki.fjsc.2021.03.013 Abstract （355）      PDF （1410KB）（692）       Knowledge map    Save Oyster tastes delicious and is rich in nutrients such as zinc, taurine and glycogen. With rapid growth, high yield, short food chain and good economic benefits, oyster has become an important shellfish for aquaculture in China and even the world.The main cultivated oyster varieties in China are Crassostrea gigas (also known as Pacific oyster), Fujian oyster (also known as Portuguese oyster), C. ngulata, C. hongkongensis, C. riakensis, C. sikamea, etc.At present, the phenomenon of smaller individuals, slow growth rate, longer growth cycle and decreased quality in the cultivation practice is in urgent need of strengthening the selection and breeding of oyster varieties, and the development of polyploid breeding technology can effectively promote the development of oyster industry to the direction of high quality and high quantity.The main methods of oyster triploid induction include biological hybridization between diploid and tetraploid, physical induction methods such as temperature shock, hydrostatic pressure, electroshock and osmotic pressure, and chemical induction methods such as CB, 6-DMAP and caffeine.This review is expected to provide reference for the study of polyploidy in oysters and other shellfish. Related Articles | Metrics

Select

Review on the algicidal effect of bacteria on red tide related algae Journal of Fisheries Research    2021, 43 (4): 426-435.   DOI: 10.14012/j.cnki.fjsc.2021.04.010 Abstract （330）      PDF （1387KB）（537）       Knowledge map    Save Due to the increasing influence of human production activities, the eutrophication of aquatic ecosystem has aggravated and the red tide closely related to eutrophication have frequently occurred andbecome a global disaster problem around the world after the period of industrial revolution. The occurrence of red tide will not only damage the marine ecosystem seriously, but also pose a great threat to aquaculture. Although high costs investment with the existing physical and chemical methods can be utilized to control red tide, they may also have negative impacts on the environment. Therefore, to find effective ways to ensure that the occurrence of red tide to be under our control and reduce its adverse effects have become an urgent task. In the previous studies, it stated that some bacteria have the function of inhibiting algae growth and even killing algae, which attracted people's attention gradually.It has shown great potential in the prevention and control of red tide. In recent years, more and more algicidal bacteria have been isolated and identified, which makes a deeper understanding of their algicidal mechanisms. In this paper, the distribution, species and mechanisms of algicidal bacteria were summarized, and the future research direction of marine algicidal bacteria in the field of red tide control was prospected, so as to provide reference and help for developing new red tide control methods. Related Articles | Metrics

Select

Research progress on the properties and application of tetrodotoxin Journal of Fisheries Research    2021, 43 (5): 539-548.   DOI: 10.14012/j.cnki.fisc.2021.05.013 Abstract （326）      PDF （1323KB）（529）       Knowledge map    Save Tetrodotoxin is an extremely toxic alkaloid that is highly stable and hydrophilic. The source of tetrodotoxin is not known, but evidence suggests that tetrodotoxin may arise from a combination of external and microbial sources. Tetrodotoxin possesses specific nerve-blocking properties and therefore there is great interest in the development of tetrodotoxin in the field of clinical and neurological research. Tetrodotoxin has great research value. On the one hand, based on the enrichment and tolerance characteristics of tetrodotoxin we can develop detoxification reagents, and on the other hand, tetrodotoxin can be used as a sodium channel blocker to develop new drugs for neurological treatment. Future research on tetrodotoxin can further investigate its enrichment, tolerance mechanism, improvement and enrichment applications. In this paper, we intend to give an overview of the physicochemical properties, sources, enrichment and tolerance of tetrodotoxin and the progress of tetrodotoxin application research, aiming to provide a reference for improving the tetrodotoxin research. Related Articles | Metrics

Select

Research progress on preparation,purification and structure activity relationship of ACE inhibitory peptide SHEN Jiasen, SU Yongchang, LIN Hetong, LI Shuigen, CHEN Xiaoting, LIU Zhiyu Journal of Fisheries Research    2022, 44 (1): 100-108.   DOI: 10.14012/j.cnki.fjsc.2022.01.011 Abstract （305）   HTML （0）    PDF （1026KB）（357）       Knowledge map    Save In this study,ACE inhibitory peptide was a biologically active peptide with blood pressure lowering effect prepared by food-based processing.It contained a variety of potential physiological activities such as anti-oxidation,anti-inflammatory,and anti-obesity.The purified peptide sequence was interacted with ACE to study its structure-activity relationship.ACE inhibitory peptide was natural and reliable,non-toxic and safe,gradually replaced artificial chemical antihypertensive inhibitors and had been widely concerned and applied in the food industry.Therefore,to summarize the knowledge of ACE inhibitory peptides,the advances in the preparation,isolation and purification,molecular simulation,in vivo expression of spontaneously hypertensive rats and in vitro functional activity evaluation of polypeptides were reviewed.It is expected to provide valuable reference for the further development of ACE inhibitory peptide in the field of processing and production. Reference | Related Articles | Metrics

Select

Characteristics,existing problems and countermeasures of diamond shrimp culture( Penaeus monodon)in Zhangzhou City, Fujian Province HUANG Yongchun, LI Xinghua, LIN Nan, CHEN Qiang, TANG Hainan, BAI Yue, LI Miaomiao, CAI Zhangyin, YU Hanxiu, XU Jinzhen Journal of Fisheries Research    2022, 44 (6): 629-637.   DOI: 10.14012/j.cnki.fjsc.2022.06.012 Abstract （292）   HTML （0）    PDF （1819KB）（496）       Knowledge map    Save From April to December in 2021,68 typical farms and 265 culture questionnaires of diamond shrimp(Penaeus monodon)were investigated in Zhangzhou City,Fujian Province.The results showed that there were mild climate,long sunshine time and long coastline in Zhangzhou,which was suitable for the shrimp culture.The mainly diamond shrimp culture mode in Zhangzhou were using soil pond and higher place pond,where were mainly distributed in Longhai District,Zhangpu County,Dongshan County and Zhao’an County,respectively.There were 2-3 times harvests a year which the stocking density,survival rate,feed coefficient,output and profit were(1.50-4.50)×105 ind/hm2,73.90%,1.63,(0.38-0.98)×104 kg/hm2 and RMB(1.20-12.75)×104 yuan/hm2 in 3-10 salinity mixed by groundwater and bittern in soil pond,respectively.There were 2-3 times harvests a year too,which the stocking density,survival rate,feed coefficient,output and profit were(1.50-6.00)×106 ind/hm2,74.58%,1.84,(0.83-10.20)×104 kg/hm2 and RMB(3.53-11.09)×105 yuan/hm2 using 20-30 salinity natural seawater in higher place pond,respectively.The production of diamond shrimp larvae was increased year by year in Zhangzhou which the increase amount were 7.76% to 39.41% from 2017 to 2020.There was a slightly decline by 32.46% in 2021.At present,the basis and age of the employees of diamond shrimp farmers were poor and old in Zhangzhou,respectively.There was a single specie for selection.The stocking density of higher place pond had been blindly increased,and the aquaculture tailwater was difficult to be treated.The fine management was employed to improve the breeding efficiency,and the "white + black(Litopenaeus vannamei + P.monodon)" healthy breeding mode was popularized for promoting the sustainable and healthy development of diamond shrimp culture. Table and Figures | Reference | Related Articles | Metrics

Select

Selectivity of different mesh size codends of two-stick swingnet for Trichiurus lepturus in Eastern Fujian sea waters ZHUANG Zhidong, LIU Yong, MA Chao, XU Chunyan, CAI Jiandi, SHEN Changchun Journal of Fisheries Research    2022, 44 (3): 235-241.   DOI: 10.14012/j.cnki.fjsc.2022.03.005 Abstract （282）   HTML （2）    PDF （804KB）（219）       Knowledge map    Save In order to explore the selectivity of different mesh size codends of two-stick swingnet for Trichiurus lepturus in Eastern Fujian sea waters,4 mesh sizes(25,35,45 and 55 mm) codends were compared using covered net method in the autumn of 2019.The Logistic model was used to fit the selectivity curve of T.lepturus and the model parameters were estimated by maximum likelihood method.The results showed that:The L0.5 of T.lepturus increased with the increase of mesh size,indicating that the increase of mesh size can effectively release T.lepturus.The relationship between the L0.5 of T.lepturus and mesh size(m) was L0.5=1.877m+45.323(R2=0.712).With the increase of mesh size,the weight escape rate and number escape rate of T.lepturus also increased,both of which were above 60%. Table and Figures | Reference | Related Articles | Metrics

Select

Analysis on basic characteristics of macrobenthos community in the intertidal zone of Min River estuary,Fujian Province LIN Jianjie Journal of Fisheries Research    2022, 44 (1): 33-43.   DOI: 10.14012/j.cnki.fjsc.2022.01.004 Abstract （278）   HTML （1）    PDF （3026KB）（351）       Knowledge map    Save From 2013 to 2019,38 sections in 11 field surveys were conducted for intertidal macrobenthos study in Min River estuary,Fujian Province.A total 195 macrobenthos were found from 10 taxonomic clades,mainly from crustacean,mollusca and polychaeta.The species composition,biomass and abandunce of macrobenthos in the intertidal zone of Aojiang estuary were significantly higher than that in Minjiang estuary.And the H',J' and D indexes of macrobenthos in the intertidal zone of Aojiang estuary were significantly higher than that in Minjiang estuary.The species diversity,abandunce and biomass of macrobenthos in the intertidal zone of Min River estuary were significantly higher in the middle and low tide zones than in the high tide zones.The dominant species in the intertidal zone of Minjiang estuary were mainly small-sized crabs.The dominant species in the intertidal zone of Aojiang estuary were mainly from crustacean,mollusca and polychaeta with two commercial species Ruditapes philippinarum and Potamocorbula ustulata.The intertidal organisms in the estuary of Aojiang need more attention and research. Table and Figures | Reference | Related Articles | Metrics

Select

Change trend of main water quality indices and pollution identification in Minjiang River basin in recent years ZHAO Tianyang, SHI Chengchun, XIE Rongrong, LI Jiabing, JIANG Hua, CHEN Jin, LIU Jihui Journal of Fisheries Research    2022, 44 (4): 324-335.   DOI: 10.14012/i.cnki.fjsc.2022.04.003 Abstract （277）   HTML （0）    PDF （3847KB）（238）       Knowledge map    Save The study of water environment pollution is an important means to control watershed pollution.Taking the Minjiang River basin as an example,the trend of water quality change at 16 monitoring stations in the study area from 2004 to 2020 was analyzed by using the Seasonal Kendall Trend Analysis method,and the main pollution identification and analysis of 13 monitoring points from 2017 to 2020 were conducted by using the Time Series Global Principal Component Analysis method.The results showed that the pH and DO of tributaries were higher than those of the main stream,the main stream was lower in the upper and middle reaches and higher in the lower reaches,COD and NH3-N decreased first and then increased in the main stream from the upper reaches to the lower reaches,TP increased first and then decreased.In addition,Kendall’s test showed an improving trend in pH and DO in the study area,while TP and NH3-N were at higher risk of contamination and some sites needed more attention to COD.Finally,Time Series Global Principal Component Analysis was used to identify that the current water pollution pressure in the study area mainly comes from NH3-N and TP,especially the pollution control of tributaries in the basin needed to be strengthened. Table and Figures | Reference | Related Articles | Metrics

Select

Status and development suggestion of green and healthy aquaculture in Shandong Province LI Kai Journal of Fisheries Research    2022, 44 (2): 178-186.   DOI: 10.14012/j.cnki.fjsc.2022.02.009 Abstract （269）   HTML （1）    PDF （1101KB）（540）       Knowledge map    Save In order to further promote the high-quality development of fishery in Shandong Province,based on the summary and analysis of fishery statistical data of all the cities,combined with investigations,this paper summarized the overall scale,regional distribution and economic benefits of the technical model of green and healthy aquaculture in Shandong Province,and analyzed the main problems existing in aquaculture in Shandong Province during the 13th Five-Years-Plan period.The countermeasures and suggestions to speed up the green development of aquaculture were put forward. Table and Figures | Reference | Related Articles | Metrics

Select

The study on the deep-sea cage-culture of “Yunlong grouper” Yong-Qiang HUANG Journal of Fisheries Research    2021, 43 (4): 410-418.   DOI: 10.14012/j.cnki.fjsc.2021.04.008 Abstract （260）      PDF （3547KB）（609）       Knowledge map    Save The “Yunlong grouper”, Epinephelus moara♀× Epinephelus lanceolatus♂, were reared in the sea area under the condition of cage-culture. The initial average body weight of big size of juvenile “Yunlong grouper” was (357.00 ± 8.31) g, and the average total length was (29.95 ± 2.51) cm，the initial average body weight of small size of juvenile “Yunlong grouper” was (19.85 ± 1.23) g, and the average total length was (11.63±1.13) cm. The water temperature ranged between 14.2℃ and 29.2℃ during the experiment. The fish was feed with grouper formula feed, with 46%~48% crude protein. After 12 months of cultivation, the average body weight and total length of big size of juvenile “Yunlong grouper” reached to (1 650.22 ± 20.23) g and (44.72 ± 3.73) cm, the average body weight and total length of small size of juvenile “Yunlong grouper” reached to (480.20 ± 22.32) g and (32.41 ± 3.53) cm, and the feed coefficient was 1.22. The optimal regression equation for the body weight and total length of big size of juvenile “Yunlong grouper” was W=0.001L3.667, the optimal regression equation for the body weight and total length of small size of juvenile “Yunlong grouper” was W=0.011L3.142. The optimum water temperature for deep-sea cage-culture of “Yunlong grouper” ranged between 21.2℃ and 28.7℃。The results showed that deep-sea cage-culture can be adapted to Yunlong grouper in Fuzhou. Related Articles | Metrics

Select

Reflections on several issues in the construction and management of marine ranching in Zhejiang Province MAO Mengpan, CAI Houcai, YE Yongfeng Journal of Fisheries Research    2023, 45 (1): 88-95.   DOI: 10.14012/j.cnki.fjsc.2023.01.012 Abstract （260）   HTML （1）    PDF （1003KB）（409）       Knowledge map    Save Marine ranching, as a new form of marine economy, with large investment, high technological content and great development potential, has become an effective means to restore the deterioration of coastal ecological environment and the decline of fishery resources in China, and also an important way to realize the strategy of marine ecological civilization and maritime power. This paper analyzed the development status of marine ranching in Zhejiang Province, pointed out the main problems and their causes in the current construction and management of marine ranching in the province, and put forward some countermeasures and suggestions from the perspectives of updating concepts, industrial integration as well as scientific and technological innovation, which could provide reference for relevant departments. Table and Figures | Reference | Related Articles | Metrics

Select

Analysis on the resource status and change reason of Branchiostoma balcheri in Xiamen Amphioxus Natural Reserve MA Chao, LIU Yong, ZHUANG Zhidong, XU Chunyan, SHEN Changchun, CAI Jiandi Journal of Fisheries Research    2022, 44 (1): 44-51.   DOI: 10.14012/j.cnki.fjsc.2022.01.005 Abstract （250）   HTML （0）    PDF （2654KB）（353）       Knowledge map    Save Based on the investigation of Branchiostoma balcheri resources in Xiamen Amphioxus Natural Reserve in August 2019(summer),November 2019(autumn),January 2020(winter) and April 2021(spring),this paper studied the resource status and the reasons for resource changes of B.balcheri,combined with historical survey data.The results showed that the average body length and weight of B.balcheri were 29.71 mm and 68.0 mg,respectively.The population was mainly composed of two years classes and three years classes,accounting for 76.2%.There were significant differences in the average body length and weight in the four quarters.The average density of B.balcheri in Eyu Island sea area was 50.0 ind/m2,which was the highest of the four sea areas in the reserve,but the range was very small.The average density of Huangcuo,Nanxian-shibaxian and Xiaodeng Island-Jiaoyu Island sea area were 4.1,1.5 and 0.4 ind/m2,respectively,which decreased significantly compared with the historical survey,especially Xiaodeng Island-Jiaoyu Island sea area did not appear basically.The change of habitat environment was the main reason for the decrease of B.balcheri resources in Xiamen sea area. Table and Figures | Reference | Related Articles | Metrics

Select

An overview of discoloration mechanism and green protection technologies of Laminaria japonica CHEN Tingru, WANG Yin, WANG Xiaoling, SU Jie Journal of Fisheries Research    2022, 44 (2): 196-204.   DOI: 10.14012/j.cnki.fjsc.2022.02.011 Abstract （244）   HTML （1）    PDF （1803KB）（323）       Knowledge map    Save The output of Laminaria japonica is huge in China,but there are less L.japonica deep-processing products.L.japonica green protection is one of the important factors restricting deep-processing.The chlorosis of L.japonica is caused by H+ replacing Mg2+ in the porphyrin ring of chlorophyll,resulting in the formation of pheophytin,which makes L.japonica lose green.In view of the discoloration and chlorosis of L.japonica during processing and storage,this paper summarized the discoloration mechanism of L.japonica and the common green protection technologies in processing,in order to provide enlightenment for the green protection technologies direction of L.japonica. Table and Figures | Reference | Related Articles | Metrics

Select

Evaluation of genomic selection against neuronecrosis in the red-spotted grouper WANG Zhuobiao, FANG Ming, ZHENG Leyun, GE Hui, CHEN Xinxin, LUO Huiyu, WANG Zhiyong Journal of Fisheries Research    2022, 44 (3): 205-212.   DOI: 10.14012/j.cnki.fjsc.2022.03.001 Abstract （240）   HTML （4）    PDF （940KB）（369）       Knowledge map    Save Red-spotted grouper(Epinephelus akaara) is an important maricultured fish in the southeast coastal area of China.It is highly infected by red-spotted grouper nerve necrosis virus(RGNNV) during the artificial cultivation,which seriously restricted the development of the artificial breeding industry.In this study,230 ind RGNNV susceptible(disease-infected death) and 230 ind resistant(eventually survived fish) red-spotted grouper fry were collected for genome resequencing,and 5 412 683 single nucleotide polymorphisms(SNPs) were discovered,which were used for genetic evaluation of the RGNNV resistance of the red-spotted grouper.The estimated heritability of RGNNV was 0.566 2,and the accuracy of the genomic estimated breeding value(GEBV) with whole genome SNPs markers was 0.154 3.The evaluation of the effect of random selection of different numbers of markers on the genomic prediction accuracy showed that using≥5 000(5 k) SNPs markers could obtain more desirable results.This study provided a useful theoretical reference for application of genomic selection for breeding of red-spotted grouper against RGNNV. Table and Figures | Reference | Related Articles | Metrics

Select

Current situation and suggestions on the exploitation of Jack mackerel resources in the world Journal of Fisheries Research    2021, 43 (3): 307-315.   DOI: 10.14012/j.cnki.fjsc.2021.03.010 Abstract （240）      PDF （5824KB）（359）       Knowledge map    Save Jack mackerel is one of the important pelagic fishes and has become an important part of the world marine fishing industry. Based on the production statistics of FAO from 1970 to 2018 and relevant literatures, the present situation of the exploitation of jack mackerel resources in the world was analyzed and some suggestions were put forward. The study found that between 1970 and 1995, the world production of jack mackerel showed a stable growth trend, reaching an all-time high of 7.91 million tons in 1995, followed by a significant decline. Jack mackerel production during 2010—2018 was at a low level, between 2.97 and 3.33 million tons, accounting for 3.64%~4.12% of the total catch. The highest annual yield of more than 10×104 tonnes was recorded for Trachurus murphyi, Trachurus trachurus, Trachurus capensi, Trachurus japonicas, Trachurus trecae, Trachurus declivis, Trachurus mediterraneus, and Trachurus indicus,et al. In order to promote the sustainable development of the world's fishing industry of jack mackerel, the study made the following recommendations: Development of new fishing grounds and resources for jack mackerel; International cooperation, including through international fisheries organizations, on climate change and resource volatility, as well as resource assessment and management strategies for jack mackerel, to improve resource forecasting capabilities. Related Articles | Metrics

Select

Preliminary analysis of tidal current dynamic characteristics in Baima Gang sea area of Sansha Bay in Fujian Province YOU Yuanxin Journal of Fisheries Research    2022, 44 (3): 249-259.   DOI: 10.14012/j.cnki.fjsc.2022.03.007 Abstract （236）   HTML （3）    PDF （6658KB）（263）       Knowledge map    Save Using the quasi-harmonic method,this paper anchored at the six stations in Baima Gang of Sansha Bay in Fujian Province for 27 hours in April 2015 for study of the tidal current dynamic characteristics.The tidal current elliptic factors were computed,while the current type,tidal motion form and the maximum velocity and direction of fractional tide were also analyzed.It demonstrated that the tidal and current type in Sansha Bay was regular semidiurnal tide;the tidal current mainly presented in N-S reciprocating movement;the magnitude of ebb was larger than flood on the main channel,the ebb time was longer than flood;greater at the mouth and smaller at the upper station,the velocity decreased gradually from surface to bottom generally,but performed fuzzy lay phenomenon and circulation structure;the long axis meant value of M2 component tide was between 47~64 cm/s,greater at the mouth and the upper of Baima Gang. Table and Figures | Reference | Related Articles | Metrics

Select

An interpretation of the 14th Five Year Plan for fishery development in Fujian Province ZHANG Huiping Journal of Fisheries Research    2022, 44 (5): 522-528.   DOI: 10.14012/j.cnki.fjsc.2022.05.012 Abstract （235）   HTML （0）    PDF （872KB）（274）       Knowledge map    Save The 14th Five Year Plan for fishery development in Fujian Province is a guiding document for the development of fishery from 2021 to 2025 in Fujian Province,China.During the 13th Five Year Plan period,Fujian’s fishery development achieved good results.Based on the current situation of Fujian’s fishery development,this paper analyzed the development orientation of Fujian’s fishery during the 14th Five Year Plan period,which were focusing on the “big food concept” and ensuring the safe and effective supply of aquatic products,meeting the strategic needs of rural revitalization,serving the construction of a strong marine province,integrating into the construction of an ecological province and serving the overall situation of the reunification of the motherland.The key tasks were to build a “marine granary of Fujian”,promote innovative development of fishery,promote green development of fishery,coordinate the development and security,and expand the cooperation of fishery opening up.This paper also put forward suggestions on strengthening policy support,strengthening project driving,strengthening the construction of the park carrier,and innovating financial support,which would provide a reference for the development of fishery in Fujian during the 14th Five Year Plan. Reference | Related Articles | Metrics

Select

Characteristics of phytoplankton and its Pearson correlation with environmental factors in Pingtan inshore sea area,Fujian Province from spring to summer ZOU Shuangyan Journal of Fisheries Research    2022, 44 (3): 266-274.   DOI: 10.14012/j.cnki.fjsc.2022.03.009 Abstract （230）   HTML （1）    PDF （1237KB）（265）       Knowledge map    Save According to the monitoring of phytoplankton samples including red tide organisms in Pingtan inshore sea area from April(spring) to June(summer) in 2021,the ecological characteristics of phytoplankton and the Pearson correlation with environmental factors were analysed,in order to explore the changes of red tide organisms in Pingtan inshore sea area. The results showed that a total of 130 phytoplankton species in 4 phyla were identified,which was dominated by diatoms. Species quantity of phytoplankton was in the order of June>May>April. The 13 main dominant species were Skeletonema costatum,Pseudo-nitzschia delicatissima,Chaetoceros curvisetus,Leptocylindrus danicus,Melosira sulcata,Prorocentrum donghaiense,etc. The peak value of phytoplankton cell density was in June. The density ranges from 2.17×104 to 2.11×105 cells/L at different stations,with an average of(6.04~9.85)×104 cells/L. The overall evaluation was in the middle level with the highest level at CCPT04 station in Liushui sea area and the lowest at CCPT02 in Su’ao sea area. According to the Pearson correlation analysis,water temperature,pH and salinity were main factors affecting the phytoplankton community. Red tide disaster prevention should be strengthened in the period of high occurrence of red tide. Table and Figures | Reference | Related Articles | Metrics

Select

Study on the change of nutrients in scallop culture area of Yangma Island, Shandong Journal of Fisheries Research    2021, 43 (4): 394-402.   DOI: 10.14012/j.cnki.fjsc.2021.04.006 Abstract （226）      PDF （2380KB）（486）       Knowledge map    Save The water quality was tested in the shellfish breeding area of Yangma Island, Shandong Province, from May to November of 2017 to 2019. The changes of nutrients in recent years were analyzed, and the integrated situations of organic pollution in this area were assessed. At the same time, the potential eutrophication level of nutrients was also discussed. The results showed that the dissolved oxygen, demanding of chemical oxygen, inorganic nitrogen and phosphate in the shellfish breeding area of Yangma Island all accorded with the sea quality of the national primary standard in the past three years. The nutrient level of this sea area belonged to nitrogen-limited oligotrophication, and the comprehensive index of organic pollution showed that the water quality in this area was the primary standard. As a whole, the shellfish breeding area of Yangma Island, which was suitable for shellfish cultivation, reached the water quality of national standards, and the content of nutrients was normal. Related Articles | Metrics

Select

Estimated breeding value and heritability of 18 pfm body weight for full-sib families of Mastacembelus armatus LIU Yanyan, XUE Lingzhan, FU Jianjun, WU Meiying, CHEN Yushu, LIAO Mengxiang, CHEN Duhuang, HU Zhenxi, LIN Xuewen, DONG Zaijie, FAN Haiping, WU Bin Journal of Fisheries Research    2022, 44 (3): 213-222.   DOI: 10.14012/j.cnki.fjsc.2022.03.002 Abstract （225）   HTML （1）    PDF （1516KB）（235）       Knowledge map    Save With the gradual rise of aquaculture of Mastacemblus armatus,the problems such as germ plasm confusion and unclear genetic background have become increasingly prominent,which are not conducive to the commercial development of variety.In order to explore the breeding potential of M.armatus,this study used wild M.armatus as parents to construct 17 full-sib families through full-sib breeding model.After 18 months of cultivation,seven effective families were finally obtained.The single trait animal model was used to estimate the breeding value and heritability of each individual by BLUP,with the average body weight of each family as a covariate.The variance component evaluation results of the full-sib family weight of 18 pfm M.armatus showed that the heritability was(0.468 1±0.173 7),the t test reached P<0.01,and the body weight had a positive correlation with breeding value.The regression equation of male was y=0.393 6x-84.193 0(R2=0.755 4,P<0.01);the female was y=0.517x-64.126(R2=0.817 8,P<0.01).The females with the top 50 breeding values were mainly concentrated in family B,E and D,especially family B,the top 24 females and top 19 males were from this family.The maximum breeding value of male fish was 75.09,and that of female fish was 67.49,both of them were from the same family B.Through this study,the M.armatus had high heritability of body weight,which could be selected by phenotype or BLUP breeding value. Table and Figures | Reference | Related Articles | Metrics

Select

The acute toxicity and joint toxicity effect of cadmium, zinc and chromium on Culter alburnus Basilewsky larva MU Hongxia, LI Lei Journal of Fisheries Research    2022, 44 (1): 69-77.   DOI: 10.14012/j.cnki.fjsc.2022.01.008 Abstract （220）   HTML （0）    PDF （3574KB）（280）       Knowledge map    Save Heavy metal pollution is one of the most hazards of environmental pollution these years in fishery.With the development of industry and agriculture,a lot of heavy metal pollutants are released through various methods into the water body.Biological monitoring can reflect the environmental pollution conditions completely,sensitively and continuously.Culter alburnus Basilewsky is a widely exiting fish all over the whole country that with highly economic value.In order to estimate the acute toxicity and joint toxicity of heavy metal Cd2+,Zn2+ and Cr6+ toward C.alburnus Basilewsky,single chemical and mixture experiments were tested in still water at(22±1)℃.Results of single toxicity tests are as following:LC50 of Cd2+ on C.alburnus in 24 h,48 h,72 h,96 h were respectively 12.29,9.56,7.41 and 6.05 mg/L,LC50 of Zn2+ were respectively 41.92,34.43,27.37 and 22.23 mg/L,LC50 of Cr6+ were respectively 39.47,32.68,27.25 and 25.72 mg/L;the safety concentrations for Cd2+,Zn2+ and Cr6+ were respectively 0.605,2.223 and 2.572 mg/L.Joint toxicity experiments indicated that AI>0 of the coexistence of Cd2+/Zn2+ in 24 h,48 h,72 h,96 h,as well as Zn2+/Cr6+ and Cd2+/Cr6+.Every coexistence group showed synergy.Among these groups,the joint toxicity of Zn2+/Cr6+ suggested the most intensive. Table and Figures | Reference | Related Articles | Metrics

Select

Research progress of high-value comprehensive utilization of Laminaria japonica LI Ying, WANG Yin, CHEN Tingru, LIN Xiaojuan, CHEN Jicheng, LIU Zhiyu Journal of Fisheries Research    2023, 45 (2): 192-201.   DOI: 10.14012/i.cnki.fjsc.2023.02.012 Abstract （219）   HTML （0）    PDF （1120KB）（381）       Knowledge map    Save Kelp is one of the major economic algae in China, with abundant resources and annual production ranking among the top in the world.As a medicinal and edible food, kelp is rich in dietary fiber, protein, vitamins, minerals and other nutrients, which is popular with many consumers.The iodine, polysaccharides, active peptides, mannitol and other functional active substances in kelp have physiological function, such as anti-Alzheimer disease, antithrombotic, anti-cancer, anti-inflammation and blood pressure lowering, which can be developed into biomedical products with significant therapeutic effects.In addition, kelp has applications in beauty products, medical textiles, feed and fertilizer, which has a broad development prospect.In this paper, the comprehensive application of kelp in food, biomedical products, feed, fertilizer and other fields as well as the study of active substances were reviewed, with a view to providing reference ideas for developing new kelp products and promoting the high-quality development of kelp industry. Table and Figures | Reference | Related Articles | Metrics

Select

Effects of starvation on initial feeding and growth of early Pseudogobio vaillanti larvae ZHONG Quanfu, CHEN Bin, FAN Haiping, LIN Yu, ZHUO Yuchen, ZHANG Jingjing Journal of Fisheries Research    2022, 44 (5): 484-491.   DOI: 10.14012/j.cnki.fjsc.2022.05.007 Abstract （215）   HTML （1）    PDF （1121KB）（144）       Knowledge map    Save To provide technical support for artificial breeding of Pseudogobio vaillanti,the article explored the effect of starvation stress on the initial feeding and growth,and determined the point of no return(PNR)of early larvae.The changes of absorption of yolk sac,morphology,behavior,growth,survival and initial feeding rate of starved larvae were observed by methods of experimental ecology,and the PNR and optimized initial feeding time were determined.The results showed that under the water temperature of(25.5±1.2)℃,the larvae was started feeding at 4-day-old and the yolk sac was completely absorbed at 5-day-old.A period of mixed nutrition was only maintained 1 day.The initial feeding rate reached 100% at 5-6 days of age.The PNR of starved larvae occurred during 8-9 days of age with the interval between the first feeding to PNR was 4-5 days as the same time of 50% cumulative mortality rate for larvae of P.vaillanti.The total length had negative growth at 9 days of age.At 6 days of age,the body weight of starved group had negative growth and relative fatness decreased continuously,and it was significantly lower than that of control group,which could be used as judgment basis for the starved larvae of P.vaillanti.The results showed that the larvae of P.vaillanti had short mixed nutrition period and weak starvation tolerance.At water temperature(25.5±1.2)°C,the artificially bred larvae of P.vaillanti could be fed at 4-day-old.The best feeding time as 5-day-old,but the latest feeding time should not exceed 7-day-old. Table and Figures | Reference | Related Articles | Metrics