大菱鲆家系生长和耐热性状对比分析  

Comparative analysis of growth and upper thermal tolerance traits among turbot(Scophthalmus maximus) families

作　　者：曹宝祥[1] 张天时[1] 刘宝锁[1,2] 孔杰[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,山东青岛266071 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《中国水产科学》2012年第6期1001-1007,共7页Journal of Fishery Sciences of China

基　　金：国家科技支撑计划(2011BAD13B07);国家自然科学基金面上项目(308719192);青岛市科技发展指导计划项目(KZJ-38)

摘　　要：利用40个大菱鲆(Scophthalmus maximus)家系进行耐热性实验,测定相应生长和耐热性状指标,对耐热性状进行方差分析,并分析生长与耐热性状的相关情况。结果表明:在各家系生长前期,快速生长家系6个,生长较快家系26个,生长速度一般家系8个。在生长后期阶段,快速生长家系9个,生长较快家系28个,生长速度一般家系3个,仅有8号家系一直为快速生长家系。在耐热性状方面,各家系耐热性平均值在1 367.30～836.30℃.h之间,总体平均值为1 113.00℃.h。高耐高温家系为8号、33号和37号家系,其中33号家系耐热性数值最高,其耐热性平均值为1 367.30℃.h,不耐高温家系为3号、9号、16号、38号和40号家系,其中38号家系耐热性数值最低,其耐热性平均值为836.30℃.h。方差分析结果显示,不同家系间耐热性存在极显著差异(P<0.01),相关分析结果表明,各家系不同生长阶段与耐热性呈现不同的相关性。旨在探明生长性状与耐热性状的相关性,为大菱鲆的耐热家系选育奠定研究基础。This study assessed the thermal tolerance of 40 turbot families.Growth and upper thermal tolerance traits were recorded.The upper thermal tolerance trait was analyzed using variance analysis,correlation analysis and variance component analysis.Analysis of the two growth stages showed that among the 40 families studied,within the first growth stage,six families showed rapid growth,26 families showed secondarily rapid growth,and eight families showed common growth.Within the second stage,nine families showed fast growth,28 families showed secondarily rapid growth,and three families showed common growth.Only one family showed rapid growth over both stages.Analysis of the upper thermal tolerance trait showed that upper thermal tolerance ranged from 836.30–1 367.30℃？h with a total mean of 1 113.00℃？h.Three high heat resistance families were identified.The family with the highest heat resistance was shown to have a mean upper thermal tolerance of 1 367.30℃？h.Five non heat resistance families were identified,with a thermal tolerance of 836.30℃？h identified for the family displaying the lowest mean of upper thermal tolerance.The results of ANOVA showed that there was a significant difference in upper thermal tolerance among the different families studied（P0.01）.The correlation analysis showed a different phenotypic correlation between growth rate at different growth period compared to growth rate and upper thermal tolerance.

关 键 词：大菱鲆 家系 耐热性 方差分析 相关分析 

分 类 号：S96[农业科学—水产养殖]