Different Dynamics of Reproductive Cell Development in Oviparous Clausilia bidentata and Ovoviviparous Ruthenica filograna Snails.

IF 1.4 3区生物学 Q2 ZOOLOGY Zoological Studies Pub Date : 2022-05-10 eCollection Date: 2022-01-01 DOI:10.6620/ZS.2022.61-14

Krystyna Szybiak, Elżbieta Gabała, Zbigniew Adamski

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Abstract

Most terrestrial snails are oviparous and only some are ovoviviparous. The physiology of the reproductive system and its activity in these two groups have received little attention. We compared the month-to-month dynamics of reproductive cell formation between two species of Clausiliidae snails: Ruthenica filograna (an ovoviviparous species) and Clausilia bidentata (an oviparous species). Our aim was to test the hypothesis that the seasonal activity of gametogenesis is determined by reproductive strategy (oviparity /ovoviviparity). The results showed that the frequency and number of reproductive cells in different stages varied month-to-month, within each species, and between the two species. Ruthenica filograna maintained its reproductive activity throughout the entire observation period, whereas the gonadal activity of C. bidentata changed with the seasons (it was temperature dependent). Our results are in tune with the hypothesis of Baur, that ovovivipary has some advantage over oviparity under harsher environmental conditions.

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卵生钉螺与卵生钉螺生殖细胞发育动态的差异。

大多数陆生蜗牛是卵胎生的，只有一些是卵胎生的。生殖系统的生理学及其在这两个群体中的活动很少受到关注。我们比较了两种Clausiliidae蜗牛:Ruthenica filograna(卵胎生种)和Clausilia bidentata(卵胎生种)的生殖细胞形成的逐月动态。我们的目的是验证配子体发生的季节性活动是由生殖策略(卵生/卵生)决定的假设。结果表明，不同阶段生殖细胞的频率和数量在月间、种内和种间均有差异。在整个观察期内，丝状黑檀的生殖活动保持不变，而双叶蝉的性腺活动随季节变化而变化(与温度有关)。我们的研究结果与鲍尔的假设一致，即在更恶劣的环境条件下，卵胎生比卵生有一些优势。

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来源期刊

Zoological Studies 生物-动物学

CiteScore

2.80

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Zoological Studies publishes original research papers in five major fields: Animal Behavior, Comparative Physiology, Evolution, Ecology, and Systematics and Biogeography. Manuscripts are welcome from around the world and must be written in English. When the manuscript concerns the use of animals or specimens in research, a statement must be included to the effect that the author(s) has adhered to the legal requirements of the country in which the work was carried out or to any institutional guidelines.