Gonadal Maturation of Female Ribbon Prickleback in Funka Bay, Hokkaido.
Gonadal Maturation of Female Ribbon Prickleback in Funka Bay, Hokkaido.
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北海道芬卡湾雌性带刺鱼的性腺成熟。
DOI：
10.2331/suisan.61.707
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发表时间：
1995
影响因子：
0.4
通讯作者：
Toyomi Takahashi
中科院分区：
文献类型：
--
作者：
Hiroyuki Tsutsui;T. Nakatani;T. Takatsu;Toyomi Takahashi
对1991年9月至1994年5月在日本北海道丰加湾采集的雌性箭背石斑鱼的性腺成熟进行了组织学观察。卵巢中可见从染色质核仁期到移核期的卵母细胞。根据卵巢卵的发育阶段，对丽金龟雌虫的成熟度进行了研究。箭虫可分为卵黄囊期、油滴期、早期卵黄形成期、晚期卵黄形成期和移行核期5个阶段。1月份，91.6%的雌鱼卵母细胞处于卵黄囊期，8.4%的雌鱼卵母细胞处于油滴期。同期卵巢内可见排卵后卵泡。5月份滴油期卵母细胞比例增加至80%。9月中旬，所有雌体均处于卵黄形成后期。11月，观察到许多卵母细胞处于移核期。这些观察结果表明L.箭虫从12月到1月在丰卡湾产卵。
Gonadal maturation of female ribbon prickleback, Lumpenus sagitta, collected in Funka Bay, Hokkaido, from September 1991 to Mayebruary 1994 was examined histologically. Oocytes from the chromatin nucleolus stage to the migratory nucleus stage were observed in the ovary. Based on the developmental stages of ovarian eggs, the maturity of female of L. sagitta was divided into five stages: the yolk vesicle stage, the oil drop stage, the early yolk formation stage, the late yolk formation stage and the migratory nucleus stage. In January, 91.6% of the femals had oocytes at the yolk vesicle stage and 8.4% at the oil drop stage. In the same period, postovulatory follicles were found in the ovary. Percentages of oocytes at the oil drop stage increased to 80% in May. In the middle of September, all of the females were in the late yolk formation stage. In Novemver, many oocytes at the migratory nucleus stage were observed. These observations, indicate that L. sagitta spawn from December to January in Funka Bay.