Stranger things: on the novel buccopharyngeal anatomy and functional morphology of ‘sand-eating’ Malagasy tadpoles (Anura: Mantellidae: Mantidactylus)

IF 3 2区 生物学 Q1 ZOOLOGY Zoological Journal of the Linnean Society Pub Date : 2024-10-18 DOI:10.1093/zoolinnean/zlae127
Pedro Henrique dos Santos Dias, Florencia Vera Candioti, Richard Wassersug, Paul Lukas, Mariane Targino, Julian Glos, Ward C Wheeler, Stefan Hertwig, Angelica Crottini, Alexander Haas
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Abstract

Anuran larvae are characterized by an extensive array of specialized oral structures that allow them to both graze on substrates and suspension feed with great efficiency. Diversity in these feeding structures accounts for significant diversity of anurans. Herein we describe an astonishing novel buccopharyngeal morphology in six larvae of ‘sand-eating’ tadpoles of the Mantellidae genus Mantidactylus. The buccopharyngeal cavity of these tadpoles is characterized by the presence of ruffled ridges not seen previously in any other anuran larva. Extensive review of the literature and of new empirical data demonstrates the uniqueness of this morphology. We present both CT scans and ergonomic arguments in support of the hypothesis that the ruffled ridges are employed as scrubbing pads, allowing these tadpoles to remove food particles from sand grains. In addition, we explore how the ridges may have developed and evolved.
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奇怪的东西:马达加斯加蝌蚪(Anura: Mantellidae: Mantidactylus)"吃沙 "的新型颊咽解剖学和功能形态学
无尾类幼虫的特点是具有大量特化的口腔结构,这些结构使它们既能在基质上觅食,又能高效地悬浮取食。这些摄食结构的多样性是无尾类动物多样性的重要原因。在本文中,我们描述了螳螂科螳螂属六种 "食沙 "蝌蚪幼体的一种惊人的新型颊咽形态。这些蝌蚪颊咽腔的特征是出现了以前从未在其他无尾类幼体中见过的皱褶脊。对文献和新经验数据的广泛回顾证明了这种形态的独特性。我们通过 CT 扫描和人体工程学的论证,支持褶皱脊被用作擦洗垫,使这些蝌蚪能够从沙粒中清除食物颗粒的假说。此外,我们还探讨了这些脊可能是如何形成和进化的。
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来源期刊
CiteScore
6.50
自引率
10.70%
发文量
116
审稿时长
6-12 weeks
期刊介绍: The Zoological Journal of the Linnean Society publishes papers on systematic and evolutionary zoology and comparative, functional and other studies where relevant to these areas. Studies of extinct as well as living animals are included. Reviews are also published; these may be invited by the Editorial Board, but uninvited reviews may also be considered. The Zoological Journal also has a wide circulation amongst zoologists and although narrowly specialized papers are not excluded, potential authors should bear that readership in mind.
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