海洋科学Issue(7)：100-108,9.
三疣梭子蟹选育群F2S表型性状对体质量影响的效果分析
The effects of morphometric traits on body weight in F2 Population of Swimming crab Portunus trituberculatus
摘要
Abstract
120 crabs from the second generation of candidate disease-resistance stock which were screened by Vi-brio alginolyticus in our lab (F2S) and 88 regular stock crabs(RS) were randomly collected for measuring 11 mor-phormetric traits including the carapace width(X1), carapace length(X2), cheliped length(X3), first walking leg length(X4), second walking leg length(X5), third walking leg length(X6), natatorial leg length(X7), mid frontal emi-nence spine width(X8), zygomorphic frontal eminence spine width(X9), nether frontal eminence spine width(X10) and body weight(Y). The correlation coefficients among the traits were calculated, and then path analysis was conducted by taking the body weight as a dependent variable, and other ten morphometric traits as independent variables. The results showed that all of the morphometric traits are significantly correlated with body weight in both two stocks. The carapace width(0.498) and second walking leg length(0.609) have the strongest direct effects on body weight of F2S and RS, respectively, while third walking leg length and zygomorphic frontal eminence spine width have the strongest indirect effects. Four morphormetric traits were significantly on the multiple regression relationship both in two stocks. Based on this result, multiple regression equations were established as follows:F2S:Y=-108.331+8.259 X1+11.372 X4+8.382 X7-37.098 X9; RS: Y=-106.763+7.725 X1+18.452 X5-73.358 X9+45.877 X10 . This paper provides a theoretical tool to measure breeding crabs in aquaculture.关键词
三疣梭子蟹/抗病候选群F2代F2S/普通养殖群RS/形态性状/体质量/通径分析Key words
Portunus trituberculatus/selected line F2S/regular stock RS/morphometric trait/body weight/path analysis分类
生物科学引用本文复制引用
王春琳,吴丹华,崔朝霞,李来国,张晓梅,郑萍萍..三疣梭子蟹选育群F2S表型性状对体质量影响的效果分析[J].海洋科学,2013,(7):100-108,9.基金项目
国家863计划项目(2012AA100809) （2012AA100809）
国家富民强县科技专项(2011F012) （2011F012）
高等学校博士学科点专项科研基金资助项目(20103305120002) （20103305120002）
浙江省水产育种专项(2012C12907-3) （2012C12907-3）
宁波市海洋蟹类产业科技创新团队项目(2011B81003) （2011B81003）
宁波市海洋与渔业专项(2011-1-7) （2011-1-7）
宁波市农业科技专项(201015) （201015）
