摘要
用组织学方法对1.5～2.5龄红笛鲷的性腺发育进行研究。结果表明:雌性红笛鲷GSI在3～5月处于较高水平,5月达到最高值(0.14%),6～7月呈下降趋势,8月略有回升,而后一直处于较低水平;雄性红笛鲷GSI的周年变化趋势与雌性红笛鲷基本相似;雌雄红笛鲷HIS的周年变化趋势基本一致,即3月最高(雄性红笛鲷为1.73%,雌性红笛鲷为1.71%);雌性红笛鲷除6～8月外,其GSI与HSI均呈负相关,而雄性红笛鲷在5～12月GSI与HSI呈正相关,其他月份呈负相关。另外还发现精巢中精原细胞与卵巢第Ⅱ、Ⅲ时相细胞的出现几率与雌雄红笛鲷的GSI周年变化一致。精巢的发育经历了精原细胞、初级精母细胞、次级精母细胞、精子细胞、精子整个发育过程,但结合解剖学特征总体判断,精巢仅发育到Ⅳ期早期;在雌鱼只观察到卵原细胞、第Ⅱ时相卵母细胞、第Ⅲ时相卵母细胞,结合解剖学特征判断卵巢只发育到Ⅱ期。
The gonad development in Lutjanus sanguineus at the age of 1.5-2.5 years was studied by histological methods. The results showed that the gonadosomatic index （GSI） during the annual reproductive cycle for female Lutjanus sanguineus was at higher level from March to May and reached the highest level in May. But GSI showed a decrease from June to July followed by a slight increase in August again, and then remained at lower levels for several months. The changes in GSI of the male was basically similar to that of the female. It was found that the annual changes in hepatosomatic index （HSI） of male and female Lutjanus sanguineus were similar and the highest in March （1.73% and 1.71% in male and female, respectively）. The correlation between GSI and HSI in the female was negative except from June to August, but that in the male was positive from May to December but negative in other months. The occurrence rate of spermatogonium in testicular and ovary cells of the phase Ⅱ and Ⅲ were similar to the annual changes in GSI of the male and female. The testieular development was divided into 5 stages： spermatogonium, spermatocyte I , spermatocyte Ⅱ , spermatid and sperm, but with reference to the anatomical character, the testis was developed in the early stage Ⅳ. Oogonium, oocyte of the phase Ⅱ and ooeyte of the phase Ⅲ were found in the female L.sanguineus, but with reference to the anatomical character, the ovary was developed in the stageⅡ.
出处
《广西农业科学》
CAS
CSCD
2010年第4期375-379,共5页
Guangxi Agricultural Sciences
基金
广东省重大科技兴海项目(A200099A01)
湛江市科技攻关项目([2000]121-17)
关键词
红笛鲷
性腺成熟系数
肝体系数
精巢
卵巢
Lutjanus sanguineus
gonadosomatic index （GSI）
hepatosomatic index （HSI）
testicular
ovary
