Morphological description and phylogenetic characterization of hydra (Cnidaria: Hydrozoa) from São Paulo state, Brazil

IF 1.5 3区生物学 Q2 ZOOLOGY

Zoologischer Anzeiger Pub Date : 2025-01-31 DOI:10.1016/j.jcz.2025.01.004

María I. Deserti , Jeferson A. Durán-Fuentes , Maximiliano M. Maronna , André C. Morandini , Fabián H. Acuña , Sergio N. Stampar

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引用次数: 0

Abstract

The genus Hydra (Cnidaria, Hydrozoa) comprises a group of aquatic organisms that inhabit freshwater bodies worldwide, except for Antarctica. Hydras are widely recognized for their significant regenerative capacity and simple body plan. Despite the importance of these organisms in freshwater environments and due to the abundance and diversity of freshwater bodies in the Brazilian territory, curiously, this genus and other freshwater cnidarians are understudied. To assess the diversity of hydra in Brazil, we collected specimens from eight freshwater bodies in the SE and S of the country and built a phylogeny using a COI marker and comparing the morphologies with endemic species. These analyzes have yielded encouraging results, mainly the discovery of the species Hydra sinensis originating in China, highlighting the need to expand studies in less explored areas to better understand the relationship between species represented in Brazil and those from other regions of the world. Molecular and phylogenetic inferences, as proxies for species identity are essential to advance our knowledge of the diversity and evolution of Hydra and its relationship with different freshwater ecosystems in Brazil.

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巴西圣保罗州水螅（刺胞纲：水螅纲）的形态描述和系统发育特征

水螅属（刺胞纲，水螅纲）包括一组水生生物，它们栖息在除南极洲以外的世界各地的淡水水体中。九头蛇因其显著的再生能力和简单的身体结构而得到广泛认可。尽管这些生物在淡水环境中很重要，而且由于巴西境内淡水水体的丰富和多样性，奇怪的是，对这一属和其他淡水刺胞动物的研究还很不足。为了评估巴西水螅的多样性，我们收集了巴西东南部和南部8个淡水水体的水螅标本，利用COI标记建立了水螅的系统发育，并与巴西特有物种进行了形态比较。这些分析已经产生了令人鼓舞的结果，主要是发现了起源于中国的Hydra sinensis物种，这突出了在探索较少的地区扩大研究的必要性，以更好地了解巴西和世界其他地区物种之间的关系。分子和系统发育推断作为物种身份的代理，对于提高我们对巴西九头蛇多样性和进化及其与不同淡水生态系统关系的认识至关重要。

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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.