论文部分内容阅读
为了合理开发利用浙北海域青石斑鱼的资源,探索这一名贵鱼类的增养殖途径,我们于1980-1981年间,对青石斑鱼的繁殖生物学特性进行了观察研究。结果表明:青石斑鱼是雌雄同体,雌性先熟的性变鱼类;因其各时相卵母细胞发育为非同步性,属分批产卵类型。性成熟周期为一年一次。浙北青石斑鱼的卵巢自8～9月至翌年4月均处于I期,并以I期越冬,其卵母细胞的发育与水温关系密切,当水温20℃左右时即进入产卵期,而盛期一般在23-24℃左右,由于水温的年间差,产卵期也相应变动,一般5月下旬或6月上旬开始产卵,6月中旬至7月上旬为盛期。
In order to rationally develop and utilize the resources of the green grouper in the sea of northern Zhejiang and to explore the ways of increasing the breeding of this expensive fish, we studied the reproductive biological characteristics of the green grouper during 1980-1981. The results showed that: green grouper is a hermaphrodite, female premature degeneration of fish; because of the development of the oocyte at each time asynchronously, is a partial spawning type. Sexual maturity cycle once a year. Northern Zhejiang Green grouper ovary from August to September the next year are in Phase I, and I wintering, the development of oocytes and water temperature close, when the water temperature of about 20 ℃ into the spawning period, The peak period is generally about 23-24 ℃, due to poor water temperature, spawning period also corresponding changes, usually in late May or early June spawning, mid-June to early July for the peak.