关键词: 凡纳滨对虾 , 形态性状, 产卵量, 孵化率, Litopennaus vannamei, morphological character, fecundity, hatchability

Abstract: In the paper, the morphological characteristics and fecundity, hatchability on different breeding groups of Litopenaeus vannamei broodstock were studied, respectively. The results showed that there were no significant difference between A group and B group except body weight, body length, carapace length, the second segment height and telson length. The spawning amount of A and B group were (0.65±0.20)×104, (0.64±0.18)×104 individual/body weight (g) (P>0.05). However, there were significant differences on the nauplii amount and hatching rate (P<0.05). There was significantly correlated on body weight and fecundity of B group of Litopenaeus vannamei broodstock (P < 0.05), the broodstock spawning quantity (y, million) and weight (W, g) regression equation was: Y=0.054 5W0.6778 (R2=0.522 8). There was no significantly correlated on morphometric character and fecundity of A group of Litopenaeus vannamei broodstock (P > 0.05), the broodstock spawning quantity (y, million) and weight (W, g) regression equation was: Y=0.010 3W1.0878 (R2=0.410 3).