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      Species richness and biogeographical affinities of the marine molluscs from Bahía de Chamela, Mexico

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          Abstract

          For more than 10 years (2007-2018), the benthic macroinvertebrates of Bahía de Chamela (Mexican Pacific) were sampled at 31 sites (0-25 m depth). A total of 308 species of the five main classes of benthic molluscs were obtained (106 bivalves, 185 gastropods, 13 polyplacophorans, two scaphopods and two cephalopods). This is a significant increase in the number of species (246 new records) compared to the 62 species previously recorded more than 10 years ago. The distribution in the 31 localities of the bay is given for the first time for most of the species, together with information on its ecological rarity (incidence in the samples). Two families of bivalves ( Veneridae and Mytilidae ) and three families of gastropods ( Calyptraeidae , Muricidae and Collumbellidae ) comprised ~ 30% of all species. Ecological rarity was evident with 45 families (45.0%) with only one species and 178 species (57.8%) collected in one site and 67 (21.8%) in two sites. The molluscs of Bahía de Chamela represent 12.2% of all species recorded in the Mexican Pacific. Their biogeographic affinities are mostly related to the Tropical Eastern Pacific (TEP) including the oceanic islands and a few are restricted to the Tropical Mexican Pacific (TMP). Some have broader distributions to adjacent northern and southern temperate regions of the American Pacific, one to the western Atlantic, two pantropical (PAN) and two cosmopolitans (COS). The range distribution of each species was reviewed and updated, thus finding that seven species have extended their ranges of geographic distribution.

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          Most cited references 82

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          Ecological Diversity and Its Measurement

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            The circulation of the eastern tropical Pacific: A review

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                Author and article information

                Contributors
                Journal
                Biodivers Data J
                Biodivers Data J
                1
                urn:lsid:arphahub.com:pub:F9B2E808-C883-5F47-B276-6D62129E4FF4
                urn:lsid:zoobank.org:pub:245B00E9-BFE5-4B4F-B76E-15C30BA74C02
                Biodiversity Data Journal
                Pensoft Publishers
                1314-2836
                1314-2828
                2020
                11 December 2020
                : 8
                Affiliations
                [1 ] Departamento de Ecología, Universidad de Guadalajara, Zapopan, Mexico Departamento de Ecología, Universidad de Guadalajara Zapopan Mexico
                [2 ] Universidad Pedagógica Nacional, Guadalajara, Mexico Universidad Pedagógica Nacional Guadalajara Mexico
                Author notes
                Corresponding author: Eduardo Ríos-Jara ( eduardo.rios@ 123456academicos.udg.mx ).

                Academic editor: Dimitris Poursanidis

                Article
                59191 14860
                10.3897/BDJ.8.e59191
                7749099
                Eduardo Ríos-Jara, Cristian Moisés Galván-Villa, María del Carmen Esqueda-González, Manuel Ayón-Parente, Fabián Alejandro Rodríguez Zaragoza, Dafne Bastida-Izaguirre, Adriana Reyes-Gómez

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Page count
                Figures: 2, Tables: 4, References: 82
                Funding
                This work is part of the project “Inventario de la biota marina (Cnidarios, Poliquetos, Moluscos, Crustáceos, Equinodermos y Peces) del santuario Islas e Islotes de Bahía de Chamela, Jalisco, México” (FB1631/JF023/12, funded by Fondo para la Biodiversidad/CONABIO and Universidad de Guadalajara).
                Categories
                Research Article

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