Postovipositional development of the sand snake Psammophis sibilans (Serpentes:Lamprophiidae) in comparison with other snake species
Postovipositional development of the sand snake Psammophis sibilans (Serpentes:Lamprophiidae) in comparison with other snake species
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沙蛇 Psammophis sibilans（蛇类：Lamprophiidae）与其他蛇种的产后发育比较
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
O. Zahradnicek
中科院分区：
文献类型：
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作者：
Eraqi R. Khannoon;O. Zahradnicek
描述和比较不同物种的发育过程有助于解释不同或相似的身体形式是如何进化的。我们提出了一个卵生非洲沙蛇Psammophis sibilans从Lamprophidae家庭的胚胎表，描述其postovispositic在卵的发展。沙蚕属是一个很好的模式属，广泛分布于非洲和亚洲，包括22种。我们描述了10个胚胎阶段的基础上发展的外部可见的形态特征，如;咽弓，面部过程，眼睛，鳞片，身体色素沉着和体色图案的发展。本研究讨论了这种蛇的发展，并将其与密切相关的棕色房子蛇Lamprophis fulliginosus（Lamprophidae）和医学上重要的有毒眼镜蛇Naja haje haje和Naja kaouthia从姐妹谱系Elapidae进行比较。远亲的基础蛇蟒蛇separium，显示不同的形态和行为，被选为更深入地了解身体结构的进化在蛇的分支。我们发现种间差异的相对阶段的胚胎结构的发展，在产卵的时候，在postovipositation胚胎发育。这项研究的结果之一是，胚胎结构，如咽突，眼睛色素沉着和鳞片是种间保守的形态分化的时间方面，而身体色素沉着，颜色和颜色图案是种间塑料在其时空发展。
Characterizing and comparing developmental progress across different species helps to interpret how different or similar body forms evolved. We present an embryonic table for the oviparous African Sand Snake Psammophis sibilans from the Lamprophidae family, describing its postovipositional in ovo development. Psammophis is a good model of a genus that is widely distributed in Africa and Asia and includes 22 species. We describe ten embryonic stages based on the development of externally visible morphological characteristics such as; pharyngeal arches, facial processes, eyes, scales, body pigmentation and body colour pattern development. This study discusses the development of this snake and compares it with that of the closely related brown house snake Lamprophis fulliginosus (Lamprophidae) and the medically important venomous cobras Naja haje haje and Naja kaouthia from the sister lineage Elapidae. The distantly related basal snake Python sebae, which displays different morphology and behaviour, was chosen for deeper insight into the evolution of body structures within the snake clade. We found interspecific differences in the relative stage of development of embryonic structures at the time of oviposition and during postovipositional embryonic development. One of the outcomes of this study is that embryonic structures such as the pharyngeal processes, eye pigmentation and scales are interspecifically conservative in regard to timing of morphodifferentiation, while body pigmentation, colour and colour pattern are interspecifically plastic in their temporospatial development.
影响因子：
2.4
作者：
Allen, William L.;Baddeley, Roland;Cuthill, Innes C.
通讯作者：
Cuthill, Innes C.