白垩纪中期克钦琥珀中有鳃石蝇幼虫的结构。

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY
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引用次数: 0

摘要

鲈形目是褶翅目中最多样化的科,有证据表明它们可能适应了较温暖的水生环境。据推测,气管鳃在这一辐射过程中起到了关键作用。本研究描述了缅甸北部白垩纪中期克钦琥珀中保存的一种带气管鳃的石蝇幼虫化石。根据其独特的形态特征,包括齿状裂口和尖尖的下颚、细长的上颚、短于圆形副颚的光泽以及胸节两侧和腹面高度分枝的鳃,该幼虫被归类为鲈形目石蝇科。此外,枕部有一排横向、稀疏且不规则的刚毛,这进一步表明它们属于 Acroneuriinae 亚科。值得注意的是,化石中的幼虫在鳃的形态和分布上与鲈形目中的某些现生成员有着惊人的相似之处,这表明这些鳃结构在不同的水生生境中具有优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The structure of a gilled stonefly larva from the mid-Cretaceous Kachin amber

Perlidae stands as the most diverse family within Plecoptera, with evidence suggesting possible adaptation to warmer aquatic environments. Tracheal gills are hypothesized to have played a pivotal role in this radiation process. This study presents the description of a fossilized stonefly larva with gills, preserved as a fresh exuvia in mid-Cretaceous Kachin amber from northern Myanmar. The larva was classified within the family Perlidae based on distinctive morphological traits, including toothed lacinia and sharp-cusped mandibles, slender palps, glossae shorter than rounded paraglossae, and highly branched gills on the sides and ventral surface of thoracic segments. Additionally, the presence of a transverse, sparse, and irregular setal row on the occiput further indicates classification within the subfamily Acroneuriinae. Notably, the fossilized larva displays striking similarities in gill morphology and distribution to certain extant members within Perlidae, suggesting that these gill structures have an advantage in various aquatic habitats.

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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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