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《Fisheries Science》 2018-04
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Biologically Reproductive Characteristics of Blenny Azuma emmnion

CHEN Bing;FU Xu;CUI Qianjin;CHEN Mingkang;CHEN Fei;JIANG Zhiqiang;Key Laboratory of Fish Applied Biology and Aquaculture in North China,Liaoning Province,Key Laboratory of Mariculture & Stock Enhancement in North China′s Sea,Ministry of Agriculture,Dalian Ocean University;  
The reproductive characteristics of blenny Azuma emmnion were studied in 350 samples monthly collected from Lvshun salt field area in Dalian in Yellow Sea from April of 2015 to April of 2016 using conventional biological methods.The results showed that mature individuals,spawning once a year,displayed obvious distinctions in secondary sex characteristics,with the minimal maturity age of 2 years old.The maximal gonado-somatic index(GSI)was observed in October,in females,and in September in males.The mature blenny had individual absolute fecundity(F)of 4009—11 075 eggs,individual relative fecundity in body length(FL)of 21.87—39.96 eggs/cm,and individual relative fecundity in body weight(Fm)of20.31—64.27 eggs/g.The correlation analysis revealed that there was significantly positive correlation between F with standard body length,body weight,dressed body weight and ovary weight,and that FL was significantly related with ovary weight and condition factor.Fm was shown to be significantly negative correlation with standard body length,body weight and dressed body weight,and to be positive correlation with GSI.
【CateGory Index】: S917.4
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