The neglected operculum: a revision of the opercular characters in river snails (Caenogastropoda: Viviparidae)

IF 1.2 4区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Journal of Molluscan Studies Pub Date : 2021-04-13 DOI:10.1093/MOLLUS/EYAB008

Le-Jia Zhang, T. Rintelen

引用次数: 2

Abstract

The morphological identification of many groups of gastropods is mostly based on shell morphology and genital structures. The value of opercular characters as taxonomic characters has so far been barely studied and evaluated. Here, the opercular characters of river snails (Viviparidae) have been revised systematically for the first time. Based on a morphological study of the opercula of 38 species of 25 viviparid genera, 16 newly defined opercular characters are shown to be useful for genus and species identification. A detailed diagnosis and description of opercular characters for each genus/species is given. One new generic assignment of a viviparid species is proposed based on this study, namely Cipangopaludina nagaensis n. comb.

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被忽视的肠盖:河螺肠盖特征的修正(Caenogastropoda:胎生纲)

许多腹足类动物的形态学鉴定主要基于外壳形态和生殖结构。目前对眼性状作为分类性状的研究和评价甚少。本文首次对河螺(胎生科)的眼观特征进行了系统的修正。本文对25个胎生属38种的胎生盖进行了形态学研究，发现有16个新定义的胎生盖特征可用于属和种的鉴定。给出了每个属/种的详细诊断和眼特征描述。在此基础上提出了一种胎生种的新属分配，即Cipangopaludina nagaensis n. comb。

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

Journal of Molluscan Studies 生物-动物学

CiteScore

3.00

自引率

8.30%

发文量

审稿时长

3 months

期刊介绍： The Journal of Molluscan Studies accepts papers on all aspects of the study of molluscs. These include systematics, molecular genetics, palaeontology, ecology, evolution, and physiology. Where the topic is in a specialized field (e.g. parasitology, neurobiology, biochemistry, molecular biology), submissions will still be accepted as long as the mollusc is the principal focus of the study, and not incidental or simply a convenient experimental animal. Papers with a focus on fisheries biology, aquaculture, and control of molluscan pests will be accepted only if they include significant advances in molluscan biology. While systematic papers are encouraged, descriptions of single new taxa will only be considered if they include some ‘added value’, for example in the form of new information on anatomy or distribution, or if they are presented in the context of a systematic revision or phylogenetic analysis of the group.