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| Establishment,Family Growth and Development in Zhangzidao Hong Strain of Yesso Scallop Patinopecten yessoensis |
| SUN Xin,LIANG Jun,ZHAO Xuewei |
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Abstract A total of 12 half‐sib families(A ,B ,C? ?L) and 36 full‐sib families(A1 ,A2 ,A3 ,B1 ,B2 ,B3 , C1 ,C2 ,C3 ,? ?L1 ,L2 ,L3 )were generated from the parents chosen from Gold Shellfish Square using a method of unbanlanced nest design to assess the phenotypic characters of Zhangzidao Hong strain of yesso scallop Patinopecten yessoensis ,in which the comparison of the growth and survival rate was performed at larval and juvenile stages in different families .The results showed that larvae in Family K3 had the best grow th in shell length at 5 days ,9 .40% higher than those in Family G3 ,significantly higher than that in Family A3 with the poorest growth .At 11 days ,Family I1 had better growth ,with shell length of 164 .83μm ;at 25 days there was the maximal shell length in Families C3 and D3 ,about 17 .71% higher than the av‐erage value of shell length .In juvenile stage ,at 120 days ,there was the maximal shell height in Family D2 ,about 40 .41% higher than those in Families C1 and D1 with the minimal shell heigh .At 180 days ,the best growth was observed in Family D2 ,about 38 .96% higher than that in Famil H1 (18 .3 mm) .The highest survival rate was observed in Family I1 at the larval stage ,17 .67% higher than that in Family D1 . At the juvenile stage ,however ,the highest survival rate was observed in Family F2 ,significant higher than in the others(P<0 .05 ,n=108) .The comprehensive comparison among all the 36 families revealed that the scallop in Family D2 and Family I1 had better grow th and survival ,indicating that they can be used as a fine variety of breeding materials .
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Received: 25 May 2016
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