缢蛏选优群体和全同胞家系早期生长性能的比较  

Comparison of early growth in Sinonovacula constricta selection group and family

作　　者：杜文俊[1] 王成东 王杰[2] 李炼星 牛东红[1] 李家乐[1] 沈和定[1] 

机构地区：[1]上海海洋大学省部共建水产种质资源发掘与利用教育部重点实验室,上海201306 [2]三门县东航水产育苗科技有限公司,浙江台州317100

出　　处：《水产学报》2016年第4期603-611,共9页Journal of Fisheries of China

基　　金：国家"八六三"高技术研究发展计划(2012AA10A400-3);上海高校水产学一流学科建设项目;上海高校知识服务平台上海海洋大学水产动物遗传育种中心项目(ZF1206)~~

摘　　要：为了比较缢蛏早期的生长性能,以乐清湾的优良群体子四代为亲本材料,分别建立了群体繁育组(QF)、群体选优组(QX)和27个全同胞家系(F1、F2、…F30),其中F18、F24和F28 3个家系由于幼虫死亡率过高而淘汰,全同胞家系建立采用单对配对的方法。对各实验组的受精率、D幼率、变态率、不同阶段的生长速度和规格大小等指标进行了分析。结果发现,各实验组受精率、D幼率、D形幼虫大小和变态率均无显著差异。不同发育阶段各实验组的个体大小、生长速率不同,群体选优组(QX)在幼虫发育的各个时期都显著大于群体繁育组(QF)。全同胞家系间存在着生长差异,其中家系F2、F7、F9、F13、F19壳长显著大于群体繁育组(QF);家系F5、F6、F14、F25、F27壳长显著小于群体繁育组(QF)。通过比较各家系和群体组早期的生长性能,筛选到优良群体和家系资料,为今后缢蛏良种的培育提供了理论基础和优良实践材料。To compare the early growth performance of the Sinonovacula constricta family group and colony group, we chose the excellent group from Leqing Bay to conduct the growth experiment. We established a selection group and 27 full-sib families（F1F2…F30）, because of the high mortality rate, the full-sib families F18, Fa4 and F28 are eliminated in the early days. For the selection group, the control group is breeding population group. For the full-sib families, single pair method is applied. And analyses were made about the fertility rate, the metamorphosis rate, the adhesive rate, the growth rate and size specification in different terms. By multiple comparison and variance analysis, it was indicated that there was no significant difference of the fertility rate, the metamorphosis rate, the size of D-type larva and the adhesive rate between different experimental groups. For all the experiment groups, the individual size and growth rate are different in different development periods. And the size and growth rate of group selection are greater than those of breeding population with significant difference. Among the full-sib families, there were also differences in the growth rate. Groups of F2, F7, F9, F13, F19, showed greater growth vigor than the control group with significant difference. Groups of F5, F6, F14, F25, F27 showed growth disadvantage compared with control group, also with significant difference. The paper conducted comprehensive comparison of early growth performance between family group and colony group, and obtained the excellent family and colony, providing basic data and excellent material for fine varieties breeding ofS. constricta in the future.

关 键 词：缢蛏 家系 群体 选优 生长发育 

分 类 号：S968.31[农业科学—水产养殖]