摘要
本文对东海银鲳的卵巢周年变化、卵母细胞发育等作了研究。结果表明,东海银鲳的繁殖期在5—6月。繁殖期过后,其卵巢发育长期处在重复发育的Ⅱ′期,并在此期过冬,至翌年3月下旬卵巢再次发育。在卵母细胞发育早期,胞质内便出现油球结构,胞质有分层现象。卵母细胞发育至大生长期晚期后,其放射带减薄且渐消失。待卵母细胞充分发育时,仅存单层的胶质膜结构。银鲳为短期分批产卵类型。
Silver pomfret is an economically valuable fish, which has a wide distribution in China from Bohai Sea down to South China Sea. Specimins of this experiment were collected monthly from the East China Sea. The observations of annual ovarian histological changes show as follows:1. The spawning season of the fish in the East China Sea is from May to June. After spawning,the ovary soon degenerated, by the end of this it will develop into stage ll'and remain in this stage over the whole winter. The ovary begins to develop once more in the last ten days of the next March; it will not approach to stage Ⅳ until April.2. During the development of oocytes oil-globule structures occur in the inner spaces of the cytoplasm, while the yolk granules appear in the early time of the large growth stage in the outer space of the cytoplasm.3. The two egg membrane layers, zona radiata and gluey membrane co-exist in the whole development course of the oocytes. In the matured stage zona radiata disappeared, there is only gluey mambrane left.4. According to the spawning behavior of silver pomfret, the fish should be classified into short-term batech-reieasing pattern.
出处
《水产学报》
CAS
CSCD
北大核心
1989年第4期316-325,共10页
Journal of Fisheries of China
关键词
银鲳
卵巢
周年变化
组织学
silver pomfret, Stromateoides argenteus, ovary, annual cycle,histology
