稀有鮈鲫封闭群Ihb：IHB生长和繁殖性能的监测  

Monitoring of the growth and reproductive performance of a rare closed colony of Gobiocypris rarus Ihb:IHB

作　　者：顾党恩[1,2,3] 于学颖[1,2] 王剑伟[1] 

机构地区：[1]中国科学院水生生物研究所,武汉430072 [2]中国科学院大学,北京100039 [3]中国水产科学研究院珠江水产研究所农业部热带亚热带水产资源利用与养殖重点实验室,广州510380

出　　处：《中国实验动物学报》2014年第1期71-75,共5页Acta Laboratorium Animalis Scientia Sinica

基　　金：国家自然科学基金(30670292);国家水体污染控制与治理科技重大专项(2009ZX07527);湖北省科技基础条件平台项目;中国科学院战略生物资源技术支撑体系(CZBZX-1)资助

摘　　要：目的 监测稀有鮈鲫野生型封闭群（Ihb：IHB）建群过程中的生长、繁殖性能,为品种管理和应用提供基础资料.方法 对原代（P0）至F4代各50对传代亲鱼的产卵量、产卵间隔、卵膜径、受精率、孵化率进行监测,并对封闭群建群过程中各代（F1~F4）初孵仔鱼全长、7日龄仔鱼全长以及30、60、90日龄时的个体大小进行了监测.结果 建群过程中各代间生长呈现一定的差异,F1代初孵仔鱼全长、7日龄全长较F2至F4代大,但30日龄后F2至F4代的生长指标高于F1代.培育封闭群过程中各代的受精率、孵化率有一定波动,但均维持在较高水平;各代间的产卵间隔差异并无显著性,P0代的产卵量和卵膜径大于F1至F4代.结论 各代的生长差异可能与饲养条件有关,原代产卵量较大与其亲本个体较大有关;世代更替过程中封闭群保持了较高的生长和繁殖性能,未发现随世代更替而出现逐渐增大或者减小的现象,符合实验动物封闭群的要求.Objective To monitor the growth and reproductive performance of a rare closed colony of Gobiocypris rarus （Ihb： IHB） and to provide basic information for its management and application. Methods Egg production, spawning interval, diameter of egg membrane, fertilization rate and hatching rate were monitored for 50 pairs of parents fish of wild gathered fish （P0）, F1, F2, F3 and F4 generations. Moreover, body size of newly hatched offspring （F1 to F4）, and at 7, 30, 60 and 90 days were measured to examine their growth profile. Results There were certain differences in growth between generations. F1 had a larger total length of the newly hatched larva and 7-day old larva than those of F2 to F4. But while in the fish at 30, 60 and 90 days, those of F2, F3, and F4 had a larger body size than that of F1, and exhibited higher growth indexes. Good performance on fertilization rate and hatching rate was shown, though there was certain fluctuation between generations. No difference of spawning interval of the closed colony were found between generations. The wild gathered fish （P0） seemed to have larger egg diameter and egg production per batch than those of F1 to F4. Conclusions It is suggested that differences in growth of the fish may be related with culture conditions, and the higher egg production may be related with the larger body size of P0. The results indicate that the closed colony preserves good performance of growth and reproduction. No increasing or decreasing tendency is found during the passage process. This Ihb： IHB colony meets the requirement of quality control of laboratory animal closed colony.

关 键 词：稀有鮈鲫 封闭群 生长性能 繁殖性能 

分 类 号：Q95-33[生物学—动物学]