Notes on lung development in South African ghost frogs (Anura: Heleophrynidae)

IF 0.8 4区 生物学 Q3 ZOOLOGY
Jackson R. Phillips, Jens Reissig, Gary K. Nicolau
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引用次数: 0

Abstract

ABSTRACT Lungs are a prototypical trait of most tetrapods, but some amphibians have become secondarily lungless over evolutionary time. Anuran (frog) tadpoles offer an opportunity to examine lung loss from an evolutionary perspective, because there are many independent instances where lungs are not inflated until adulthood, and so are functionally lost. Lung loss is typically associated with living in fast-flowing streams, and so we examined larval lung development in the stream specialist family Heleophrynidae. We find that one genus, Hadromophryne Van Dijk, 2008, has large lungs as a tadpole, while the other genus, Heleophryne Sclater, 1898, has much smaller, stunted lung buds. We further speculate how this information changes our understanding of how the specialised torrent form has evolved in this specialised group.
南非鬼蛙肺发育的注释(无尾目:鬼蛙科)
肺是大多数四足动物的一个典型特征,但随着进化时间的推移,一些两栖动物已经成为继发性无肺动物。蛙类蝌蚪提供了一个从进化角度研究肺功能丧失的机会,因为有许多独立的例子表明,肺直到成年后才膨胀,因此功能丧失。肺损失通常与生活在湍急的溪流中有关,因此我们研究了溪流专家Heleophrynidae家族的幼虫肺发育。我们发现一个属,2008年出生的hadroophryne Van Dijk,有像蝌蚪一样大的肺,而另一个属,1898年出生的Heleophryne Sclater,肺芽要小得多,发育迟缓。我们进一步推测这些信息如何改变我们对特殊激流形式如何在这个特殊群体中进化的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.00
自引率
6.70%
发文量
15
审稿时长
>12 weeks
期刊介绍: African Journal of Herpetology (AJH) serves as an outlet for original research on the biology of African amphibians and reptiles. AJH is an interdisciplinary journal that publishes original articles and reviews from diverse fields and disciplines, such as conservation, phylogenetics, evolution, systematics, performance, physiology, ecology, behavioural ecology, ethology, and morphology. The Journal publishes two issues a year. There are no page charges .
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