First record of Aegla leach, 1821 (Decapoda: Anomura) in drainages flowing into Iguaçu national park with description of two new species

IF 1.5 3区生物学 Q2 ZOOLOGY

Zoologischer Anzeiger Pub Date : 2025-07-05 DOI:10.1016/j.jcz.2025.07.005

Tiago Arantes , Lucas Oliveira-Rogeri , Gabriel L. Bochini , Priscila S.R. Frazato , Lenice Souza-Shibatta , Fernando L. Mantelatto , Gustavo M. Teixeira

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引用次数: 0

Abstract

Iguaçu National Park, located in Brazil, although internationally recognized for its scenic waterfalls, remains vastly underexplored in terms of its freshwater invertebrate fauna. In this study, we report the first confirmed records of the freshwater crab genus Aegla Leach, 1821 (Decapoda: Anomura) in streams flowing into this protected area and describe two new species: Aegla naipi sp. nov. and Aegla taroba sp. nov. Our integrative approach, combining detailed morphological comparisons and molecular phylogenetic analyses, reveals that these taxa represent a distinct lineage within the Aegla clade, reflecting complex patterns of endemism and historical isolation. Specimens were collected and preserved in alcohol, examined morphologically, and analyzed using COI and COII sequences with species delimitation methods. Both species show restricted distributions and exhibit diagnostic characters that differentiate them from all known congeners, emphasizing the neglected micro-endemism in the region. Our findings not only expand the known distribution of the genus Aegla but also draw attention to the urgent need for biodiversity assessments and conservation strategies focused on aquatic microhabitats in remnants of the Atlantic Forest.

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1821年在流入伊瓜帕拉苏国家公园的水系中首次记录了伊瓜拉淋滤（十足目：反常目），并描述了两个新种

位于巴西的伊瓜帕拉苏国家公园，虽然以其风景秀丽的瀑布而闻名于世，但就其淡水无脊椎动物动物群而言，仍未得到充分的开发。在本研究中，我们报告了1821年流入该保护区的淡水蟹属（十足目：异常目）的首次确认记录，并描述了两个新物种：Aegla naipi sp. 11和Aegla taroba sp. 11 .。我们的综合方法结合详细的形态比较和分子系统发育分析，揭示了这些分类群在Aegla分支中代表了一个独特的谱系，反映了复杂的地方性和历史隔离模式。收集标本并在酒精中保存，进行形态学检查，并使用COI和COII序列与物种划界方法进行分析。这两个物种的分布都很有限，并表现出与所有已知同系物不同的诊断特征，强调了该地区被忽视的微特有性。我们的发现不仅扩大了已知的Aegla属分布，而且引起了人们对大西洋森林遗迹中水生微生境的生物多样性评估和保护策略的迫切需要。

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来源期刊

Zoologischer Anzeiger 生物-动物学

CiteScore

2.80

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： Zoologischer Anzeiger - A Journal of Comparative Zoology is devoted to comparative zoology with a special emphasis on morphology, systematics, biogeography, and evolutionary biology targeting all metazoans, both modern and extinct. We also consider taxonomic submissions addressing a broader systematic and/or evolutionary context. The overall aim of the journal is to contribute to our understanding of the organismic world from an evolutionary perspective. The journal Zoologischer Anzeiger invites suggestions for special issues. Interested parties may contact one of the editors.