Ontogeny of the Moorish gecko Tarentola mauritanica with emphasis on morphogenesis of the skin and its derivatives.,Journal of Experimental Zoology-B: Molecular and Developmental Evolution

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Ontogeny of the Moorish gecko Tarentola mauritanica with emphasis on morphogenesis of the skin and its derivatives.
Journal of Experimental Zoology-B: Molecular and Developmental Evolution ( IF 1.8 ) Pub Date : 2020-05-14 , DOI: 10.1002/jez.b.22951
Wafaa I M Alturk ₁ , Eraqi R Khannoon _{1,

2}

Affiliation

Studying reptilian embryonic development provides answers to many questions related to the development of tetrapods. Reptilian skin has been recently considered in studies at the evo‐devo level. The lizard epidermis has to be shed periodically. At the embryonic level, contention exists regarding the first layers to appear, whether the oberhautchen or the clear layer, and whether the shedding complex develops before hatching. Geckos exhibit diverse morphologies independently evolved multiple times within the clade, such as subdigital pad lamellae. Here we investigate the embryonic development of Tarentola mauritanica and establishing its embryonic table. Primarily we follow the development of the integument. This is a closely related species to Tarentola annularis and it is crucial to investigate whether it has the same derived digital condition of claw regression. Eleven embryonic stages are described according to the external morphological characteristics of the embryos. Interestingly, the oviposition stage appears earlier than its close relative T. annularis, and the total incubation time is less. We also describe skin development, adding clear evidence to the debate on the development of the shedding complex, which we found is developed before hatching. We describe one layer of periderm and the clear layer as the first embryonic epidermal layers. Generally, our results show the genus Tarentola to have the advantage of being a unique taxon, easily breed at the laboratory, with multiple clutches per year, and with an earlier stage at oviposition. That could be a model animal for embryonic development and experimental embryology studies.

中文翻译：

摩尔壁虎Tarentola mauritanica的个体发育，着重于皮肤及其衍生物的形态发生。

研究爬行动物的胚胎发育可为与四足动物发育相关的许多问题提供答案。爬行动物皮肤最近在evo-devo水平的研究中得到了考虑。蜥蜴表皮必须定期脱落。在胚胎阶段，存在关于出现的第一层的争论，无论是上层还是透明层，以及在孵化前是否形成脱落复合物。壁虎展现出在进化支中独立演化多次的多种形态，例如亚数位垫片。在这里，我们调查毛绒绒球菌的胚胎发育并建立其胚表。首先，我们关注外皮的发展。这是与塔伦托拉圆环菌密切相关的物种因此，研究其是否具有相同的爪回归数字条件至关重要。根据胚胎的外部形态特征描述了十一个胚胎阶段。有趣的是，产卵期早于其紧密相对的环状圆环菌，并且总的孵化时间更少。我们还描述了皮肤发育，为关于脱落复合物的发展的辩论提供了明确的证据，我们发现该脱落是在孵化之前进行的。我们将一层皮和透明层描述为第一个胚胎表皮层。一般来说，我们的结果表明塔伦托拉属拥有成为独特分类群的优势，可以在实验室轻松繁殖，每年要抓多个抓钩，并且产卵的时间要早一些。那可能是用于胚胎发育和实验胚胎学研究的模型动物。

更新日期：2020-05-14

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