Szybiak Krystyna, Gabała Elżbieta, Adamski Zbigniew
Department of General Zoology, Faculty of Biology, Adam Mickiewicz University in Poznań, ul. Umultowska 89, 61-614 Poznań, Poland. E-mail:
Institute of Plant Protection -National Research Institute, ul. Władysława Węgorka 20, 60-318 Poznań, Poland. E-mail:
Zool Stud. 2022 May 10;61:e14. doi: 10.6620/ZS.2022.61-14. eCollection 2022.
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: (an ovoviviparous species) and (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. maintained its reproductive activity throughout the entire observation period, whereas the gonadal activity of 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.
大多数陆生蜗牛是卵生的，只有一些是卵胎生的。这两类蜗牛生殖系统的生理机能及其活动很少受到关注。我们比较了两种烟管蜗牛（一种卵胎生物种和一种卵生物种）生殖细胞形成的逐月动态变化。我们的目的是检验配子发生的季节性活动由生殖策略（卵生/卵胎生）决定这一假设。结果表明，不同阶段生殖细胞的频率和数量在每个物种内部以及两个物种之间都逐月变化。在整个观察期内保持其生殖活动，而的性腺活动随季节变化（它依赖于温度）。我们的结果与鲍尔的假设一致，即在更恶劣的环境条件下，卵胎生比卵生具有一些优势。
