关键词: 双斑东方鲀, 红鳍东方鲀, 杂交, 育种, Fugu bimaculatus, Fugu rubripes, hybirdization, breeding

Abstract: In order to obtain the juveniles of fugu with hybrid heterosis, the author applied artificial breeding technology in matured Fugu bimaculatus and Fugu rubripes for hybridization. The embryo development of normal crosses(SH) and reciprocal crosses (HS) were observed and the resistance test of high temperature in normal crosses (SH), reciprocal crosses (HS) and control groups (SB and HQ) were conducted. The results showed that the fertility rates were 95.6%, 93.5%, 96.0% and 89.5% in normal crosses(SH), reciprocal crosses (HS) and control groups (SB and HQ), respectively. The hatching rate of those oosperms were 92.2%、80.6%、89.4% and 79.9%, and the indoor survival rates of those juveniles were 28.4%、18.7%、27.5% and 19.2% in each group. The survival rate of juveniles of normal crosses(SH) in earth pond after ecological breeding was 18.3%. The oosperms of normal crosses(SH) with water temperature of 18.0～20.0℃ were developed into juveniles after 132 h. The juveniles of reciprocal crosses (HS) on the same conditions were developed into juveniles after 164 h40 min. The juveniles of reciprocal crosses(HS) and control groups(HQ) could not survive on the condition of water temperature from 28.0℃ to 35.0℃, on the other hand, the juveniles of normal crosses(SH) and control groups(SB) could grow normally on the same water temperature condition. The experiment indicated that the biological characteristics of hybrid descendants were close to female parent and the normal crosses (SH) might be broadly cultured in south coastal area such as Fujian, Guangdong, Hainan and so on.