摘要
关于鱼类性腺发育的研究,自1963年以来先后有Malone,Dixit,Basile,Eournier,Guraya等等,做过一些工作。但早在六十年代初期,我国即有一些单位对萆、青、鲢、鳙的性腺发育进行了研究。而对草鱼性腺在第一次性周期内的发育却研究得很不系统,特别是对江西省水域中草鱼卵巢发育的规律,尚无系统资料。家鱼人工繁殖的实践也表明:培育好亲鱼使其性腺发育到生长成熟阶段(即能进行催情的阶段)是人工繁殖成败的关键,现将我们的实验工作报道如下。
During the years 1975-1977,the ovarian development of 64 specimens of Chinese ide.,Ctenopharyngodon idellus,collected from the ponds and medium size reservois and the lakes in Jiangxi Province,has been studied.Sex maturity of the females is attained in 4 years.The ovary develops to StageⅠat the end of the first year.It develops to Stage Ⅱin the second year and to Stage Ⅲ from the end of the third year lasting one and half years.At the end of the fourth year,it develops to Stage Ⅳ.But the oogonia have only become transformed into the primary oocytes.So it is very necessary to induce artificial maturation before the fish is ready to enter the period of repoduc-tive activity.The ovary of the females collected from the medium-sized reservoirs and lakes is better developed than that of those collected from the ponds.The ovary exhibits a series of elaborate and gradual ordinal changes which eventually give to the mature sex cells.the oocytes don’t develop from one Phase to the next synchronously.But after spwaning time till the winter season,there are a great number of oocytes remeining in Phase 2 and some of them grow to Phase 3 in the ovary.Therefore in order to obtain fully matured individuals in the next spwaning season,it is necessary to cary on intensive culturing in previous autumn and winter seasons.The morphological and histological composition of the different stages of egg cells and the ordinal development of the first sexcycle ovary of the Chinese ide.have been described.It shows that(1)The weights of fishes of the same age are different,but the ovarian development is alike;(2)In the same ovary the maturing condition of sex cells varies in different parts.The sex cells of the posterior part are better developed than those of the anterior and middle parts.
作者
林光华
翁世聪
张丰旺
Lin Guanghua;Weng Shicong;Zhang Fangwang(Jiangxi University)
出处
《海洋与湖沼》
1981年第4期372-381,390,共11页
Oceanologia Et Limnologia Sinica
