莱茵种群和长江种群子一代中华绒螯蟹性腺发育及相关生物学指数变化的比较  

A comparative study on some biological index changes concerned with gonad development between two population of the Chinese mitten crab (Eriocheir sinensis): Rhine and Yangtze

作　　者：滕炜鸣[1] 成永旭[1] 吴旭干[1] 杨筱珍[1] 边文冀[2] 陆全平[2] 王武[3] 

机构地区：[1]上海水产大学农业部水产种质资源与养殖生态重点开放实验室,上海200090 [2]江苏省淡水水产研究所,江苏南京210017 [3]上海水产大学生命科学与技术学院,上海200090

出　　处：《上海水产大学学报》2008年第1期65-71,共7页Journal of Shanghai Fisheries University

基　　金：国家自然科学基金(30471349);江苏省水产三项工程项目;上海市重点学科建设项目(Y1101)

摘　　要：实验通过定时定点采样,对同种规格莱茵种群和长江种群的子一代中华绒螯蟹性腺发育及相关生物学指数变化进行了比较研究。结果表明:1)子一代莱茵蟹和长江蟹养殖群体在同样的养殖条件下性腺指数(GSI)变化规律几乎一致,只是在11月份以前子一代莱茵蟹雌体的GSI略高于长江蟹,莱茵蟹性腺发育时间比长江蟹早;2)无论子一代莱茵蟹还是长江蟹,其性腺快速发育期间,雌体肝胰腺中的干物质含量显著下降(P<0.05),雄体肝胰腺中的干物质含量变化不显著(P>0.05);3)两种群中华绒螯蟹雌体性腺发育过程中卵巢指数和干重显著上升,肝胰腺指数和干重显著下降,它们之间具有显著的相关性(R2=0.95);雄蟹性腺发育过程中精巢指数和干重显著上升,但是肝胰腺指数和干重几乎不变;4)在性腺快速发育之前,生殖蜕壳以后(9.8-9.28)阶段,无论子一代莱茵蟹还是长江蟹,肝胰腺指数,出肉率都显著上升,说明此阶段是河蟹育肥的关键阶段。This experiment compare Rhine population＇s first filial generation with Yangtze population of the Chinese mitten crab Eriocheir sinensis first filial generation crab in their gonad development regular and HIS variation and their correlation. The results show that： 1 ） Rhine population＇s first filial generation crab of culture population and Yangtze population＇s first filial generation crab of culture environment are the same almost in gonad development regular culture population in the same The GSI of the female Rhine population＇s first filial generation crab is higher than Yangtze population＇s. 2） No matter whether Rhine population＇s first filial generation crab or Yangtze population, in the period of their gonad development, solids content in the female＇s hepatopancreas will go down. solids content in the male＇s testis will come up （P 〈0.05）. The changes of solids content in others tissue is inconspicuousness （P 〉 0.05 ）; 3 ） In the development process of crab＇s gonad GSI and the solids content will go up prominencily. HSI and the solids content will go down prominencily. They have prominencily relativity （ R^2 = 0. 95 ） ; In the development process, of male crab＇s gonad, HSI and the solids content are the same almost. 4） In the phase between exuviations （9.8 -9.28） and the rapid growth of gonad, both the HSI and flesh of the two populations＇s first filial generation, It was demonstrated that this is the key phase of growth.

关 键 词：中华绒螯蟹 性腺发育 子一代 莱茵蟹 长江蟹 比较研究 

分 类 号：S954.1[农业科学—水产养殖]