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首页> 外文期刊>Russian journal of marine biology >Morphometric Characteristic of Sex Cells and Seasonal Changes of Female Gonads of Cucumariajaponica (Semper, 1868) (Echinodermata: Holothuroidea) from Peter the Great Bay, Sea of Japan
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Morphometric Characteristic of Sex Cells and Seasonal Changes of Female Gonads of Cucumariajaponica (Semper, 1868) (Echinodermata: Holothuroidea) from Peter the Great Bay, Sea of Japan

机译：日本海彼德大湾的黄瓜（Cucumariajaponica）性细胞的形态特征和雌性性腺的季节性变化（Semper，1868年）（Echinodermata：Holothuroidea）

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摘要

The oocytes at different stages of development were characterized morphometrically, and seasonal changes in female gonads of the Far-eastern edible holothurian Cucumaria japonica (Semper, 1868) from the Peter the Great Bay were described. Groups of oocytes and categories of sexual tubules corresponding to different stages of development of gonads were distinguished. Free laying oocytes were divided into several groups, i.e., oocytes 3,4 and 5. The greatest size of C. japonica oocytes was 460 μm. In various seasons of the year there was greater growth of oocytes in the gonads, which reached its maximum volume during reproduction of the holothurians. The gonads developed asynchronously. All the stages of development were observable simultaneously in the gonads of each individual of this species during the reproductive cycle, and the stage of fast growth prevailed. C. japonica spawned twice a year, in May-June and from July to October. Unreleased oocytes were subjected to resorption.
机译：用形态计量学表征了处于不同发育阶段的卵母细胞，并描述了来自彼得大帝海湾的远东可食用的黄瓜Cucumaria japonica（Semper，1868年）的雌性腺的季节性变化。区分了与性腺发育不同阶段相对应的卵母细胞组和性小管类别。将自由产卵的卵母细胞分为几类，即卵母细胞3，4和5。日本粳稻卵母细胞的最大尺寸为460μm。在一年中的各个季节，性腺中的卵母细胞都有较大的增长，在全人类繁殖期间达到了最大数量。性腺是异步发展的。在繁殖周期中，该物种每个个体的性腺都可以同时观察到所有发育阶段，而快速生长阶段占了上风。 C. japonica每年在5月至6月以及从7月至10月产卵两次。未释放的卵母细胞进行吸收。

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