许氏平鮋精巢的形态结构与发育组织学  

The morphology and developmental histology of testis in rockfish Sebastes schlegeli

作　　者：杨艳平[1] 温海深[1] 何峰[1] 李吉方[1] 史丹[1] 陈彩芳[1] 张葭人[1] 金国雄[1] 陈晓燕[1] 史宝[1] 

机构地区：[1]中国海洋大学海水养殖教育部重点实验室,山东青岛266003

出　　处：《大连水产学院学报》2010年第5期391-396,共6页Journal of Dalian Fisheries University

基　　金：山东省自然科学基金资助项目(Z2008D03)

摘　　要：采用组织学方法系统研究了许氏平鮋Sebastes schlegeli精巢的形态结构和发育组织学。结果表明,许氏平鮋精巢属于小叶型,精细胞发育经历初级精原细胞、次级精原细胞、初级精母细胞、次级精母细胞、精子细胞和精子6个发育阶段。5月到7月,许氏平鮋精巢处于精原细胞增殖期和初级精原细胞分裂增殖,产生次级精原细胞,次级精原细胞和支持细胞组成精小囊;9月到11月进入精子发生期,精小囊中的生殖细胞进一步发育,逐渐形成精子;翌年1月到3月是精子退化吸收期,精巢中仅有初级精原细胞和残余的精子。性成熟系数(GSI)在精子发生晚期(Ⅳ期)达到全年最高峰值,雄鱼肝重指数(HSI)在退化吸收期(Ⅴ期)达到最高峰值。The morphological structure and reproductive cycle of testis in rockfish,Sebastes schlegeli,was studied by a histological method.The results show that the rockfish testes are of lobular type.Sperm cells are developed through primary spermatogonia,secondary spermatogonia,primary spermatocytes,secondary spermatocytes,spermatid,and spermatozoa.The testes were at the stage of spermatogenic proliferation from May to July when primary spermatogonia were divided and developed into secondary spermatogonia and Sertoli cells which form spermatogenic cysts.From September to November in the spermatogenic testis,germ cells in the spermatogenic cysts developed into sperm gradually.The sperm degeneration and absorption were observed from January to March when there were only primary spermatogonia and some sperm remains.Gonado-somatic index（GSI）was found to be peaked in late development（stage Ⅳ） and the peake of hepatosomatic index（HSI） was found in stage Ⅴ.

关 键 词：许氏平鮋 精巢结构 性腺发育 

分 类 号：S945.4[农业科学—水产养殖] S955.486[农业科学—水产科学]