A new species of Ophiocoma (Echinodermata: Ophiuroidea) from Archipelago Trindade and Martin Vaz, Southeastern Atlantic, and redescription of Ophiocoma echinata

IF 1.1 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Journal of the Marine Biological Association of the United Kingdom Pub Date : 2023-07-10 DOI:10.1017/S0025315423000383

H. Serrano, Cecília J. S. Damiano, R. Alitto, P. D. Guilherme, W. R. P. Cerqueira, J. B. Mendonça, M. Tavares, Michela Borges

{"title":"A new species of Ophiocoma (Echinodermata: Ophiuroidea) from Archipelago Trindade and Martin Vaz, Southeastern Atlantic, and redescription of Ophiocoma echinata","authors":"H. Serrano, Cecília J. S. Damiano, R. Alitto, P. D. Guilherme, W. R. P. Cerqueira, J. B. Mendonça, M. Tavares, Michela Borges","doi":"10.1017/S0025315423000383","DOIUrl":null,"url":null,"abstract":"Abstract The brittle stars of the family Ophiocomidae inhabit shallow waters and coral reefs of tropical regions. The species of Ophiocoma are difficult to identify due to high morphological variation, especially when different stages of development are observed. Here, based on morphological analyses, two Brazilian morphotypes of Ophiocoma were studied and characterized, Ophiocoma sp. NB (Northeastern Brazil) and Ophiocoma sp. TMV (Trindade and Martin Vaz Archipelago), and subsequently thoroughly analysed to confirm whether they were the same species or not. After the morphological studies, including external morphology, morphometry and microstructural characters, and analysis of molecular data, involving the 16S gene, it was concluded that Ophiocoma sp. NB and Ophiocoma sp. TMV do not correspond to the same species, the first being identified as Ophiocoma echinata (Lamarck, 1816) and the latter being a new species. This new species is characterized by two tentacle scales on the first arm segment and then one on all following segments, and the dorsalmost arm spines are robust and rounded, as wide as long or almost as wide as long.","PeriodicalId":17477,"journal":{"name":"Journal of the Marine Biological Association of the United Kingdom","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Marine Biological Association of the United Kingdom","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1017/S0025315423000383","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract The brittle stars of the family Ophiocomidae inhabit shallow waters and coral reefs of tropical regions. The species of Ophiocoma are difficult to identify due to high morphological variation, especially when different stages of development are observed. Here, based on morphological analyses, two Brazilian morphotypes of Ophiocoma were studied and characterized, Ophiocoma sp. NB (Northeastern Brazil) and Ophiocoma sp. TMV (Trindade and Martin Vaz Archipelago), and subsequently thoroughly analysed to confirm whether they were the same species or not. After the morphological studies, including external morphology, morphometry and microstructural characters, and analysis of molecular data, involving the 16S gene, it was concluded that Ophiocoma sp. NB and Ophiocoma sp. TMV do not correspond to the same species, the first being identified as Ophiocoma echinata (Lamarck, 1816) and the latter being a new species. This new species is characterized by two tentacle scales on the first arm segment and then one on all following segments, and the dorsalmost arm spines are robust and rounded, as wide as long or almost as wide as long.

查看原文本刊更多论文

大西洋东南部Trindade群岛和Martin Vaz群岛蛇麻属一新种(棘皮科:蛇总科)及棘麻属再描述

蛇尾科海蛇尾栖息于热带地区的浅水和珊瑚礁中。由于形态的高度变异，特别是在观察不同的发育阶段时，蛇瘤的种类难以识别。本文在形态学分析的基础上，对巴西两种形态型蛇眼(Ophiocoma sp. NB，产自巴西东北部)和蛇眼(Ophiocoma sp. TMV，产自Trindade和Martin Vaz群岛)进行了研究和鉴定，并进行了深入分析，以确定它们是否属于同一种。经过形态学研究，包括外部形态学、形态测量学和微观结构特征，以及涉及16S基因的分子数据分析，认为Ophiocoma sp. NB和Ophiocoma sp. TMV不属于同一种，前者被鉴定为Ophiocoma echinata (Lamarck, 1816)，后者为新种。这一新物种的特征是在第一个臂节上有两个触须鳞片，之后的所有节上都有一个触须鳞片，最背的臂棘粗壮而圆，与长一样宽或几乎和长一样宽。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of the Marine Biological Association of the United Kingdom 生物-海洋与淡水生物学

CiteScore

2.30

自引率

8.30%

发文量

审稿时长

3-8 weeks

期刊介绍： JMBA is an international journal, publishing original research on all aspects of marine biology. It includes pioneering work taking place today on major issues concerning marine organisms and their environment. Subjects covered include: ecological surveys and population studies of marine communities; physiology and experimental biology; taxonomy, morphology and life history of marine animals and plants; and chemical and physical oceanographic work. Included with 2010 online subscriptions: Marine Biodiversity Records.