Abstract: In order to reveal the relationship among environmental factors,energy metabolism and immune defense ability of Yesso scallop Patinopectenyessoensis,the interannual differences in growth related indices including shell length,body weight,condition factor,survival rate and prevalence as well as their influencing factors were surveyed in Yesso scallop cultured in floating raft in Changhai County (39°17′23″N,122°44′18″E),Dalian Liaoning province,China,in March,May,June and July of 2017 and 2018.The results showed that the water temperature was significantly lower in the aquaculture sea area of Changhai County in March,June and July of 2018 than that in the same period of 2017 (P<0.05),while the dissolved oxygen contents in March,June and July was significantly higher than that in the same period of 2017 (P<0.05).The shell length,body weight and condifition of the scallop in June and July of 2018 were significantly higher than those in the same period in 2017 (P<0.05).The glycogen contents in adductor muscle were significantly higher in the scallop in March and June of 2018 and the survival rate from May to June and June to July than those in the same period of 2017 (P<0.05).In 2018,the activities of superoxide dismutase (SOD) in adductor muscle of the scallop in March,June and July,the content of malondialdehyde (MDA) in adductor muscle of scallop in May and June,the content of heat shock protein (HSP70) in adductor muscle of the scallop in March,May and June,and the prevalence from May to June and June to July were significantly lower than those in the same period in 2017 (P<0.05).It was found that the immune response intensity of scallop under appropriate environmental conditions is reduced,and the adductor muscle accumulate more glycogen,so as to provide more sufficient energy reserves for other physiological activities,which further reduce the prevalence,improve the survival rate and promote the healthy growth of scallops in floating raft culture.The findings will provide data support and theoretical basis for early disease warning and prediction of scallop in floating raft culture and healthy culture in Changhai County and the similar sea areas.
周凯, 刘超, 孔宁, 衣启麟, 杨传燕. 2017—2018年长海县浮筏养殖虾夷扇贝生长和存活差异分析[J]. 大连海洋大学学报, 2022, 37(3): 482-488.
ZHOU Kai, LIU Chao, KONG Ning, YI Qilin, YANG Chuanyan. Differences in growth and survival of Yesso scallop Patinopecten yessoensis cultured on floating raft in Changhai County between 2017 and 2018. Journal of Dalian Ocean University, 2022, 37(3): 482-488.
2022, Vol. 37 
