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      Sclerozoan and fouling sabellid worms (Annelida: Sabellidae) from Mexico with the establishment of two new species

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          Abstract

          Background

          The sabellid genera Anamobaea Krøyer, 1856 and Notaulax Tauber, 1879 are two of the most attractive polychaete worms in coral reefs. Anamobaea is represented by two Caribbean species and Notaulax with 24 species from around the world, six of them previously known to tropical America. During examination of fouling biota and sclerozoans from Mexico, Anamobaea orstedii Krøyer, 1856 was found in coral reefs from the southern Gulf of Mexico and three species of Notaulax were identified to the Mexican Pacific, two of them being new species to science.

          New information

          Anamobaea orstedii Krøyer, 1856 is first reported as sclerozoan of dead coral from the southern Gulf of Mexico. An amendment to the generic diagnosis of Anamobaea is provided, based on the presence of a higher number of skeletal cells than previously recorded; height, shape and exposition of the anterior peristomial ring; the non-fusion of dorsal collar margins to faecal groove; shape of collar chaetiger and abdominal chaetae and distribution and shape of radiolar ocelli. Notaulax californica (Treadwell, 1906) is reported as fouling in buoys and docks from the Gulf of California. Two new species of Notaulax are described: the former was found in hull and dock fouling from La Paz (Gulf of California) and the second one as sclerozoan of oysters from a dock fouling in Acapulco (south Mexican Pacific). In addition, reproductive features are described for the first time for A. orstedii which is a simultaneous hermaphrodite with female and males gametes found within the same segments of abdominal region. Oocytes develop synchronously and sperm morphology (spherical nucleus and rounded acrosome, four spherical mitochondria and a long free flagellum) suggest an adaptation to broadcast spawning and external fertilisation. Species of Notaulax here examined were gonochoric, with gametes distributed in abdominal segments.

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          Most cited references 36

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          Broadcasting fables: Is external fertilization really primitive? Sex, size, and larvae in sabellid polychaetes

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            Polychaetous annelids erected by Treadwell, 1891 to 1948, together with a brief chronology

             O Hartman,  Hartman,  O HARTMAN (1956)
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              A systematic revision of the Sabellidae-Caobangiidae-Sabellongidae complex (Annelida: Polychaeta)

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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
                08 October 2020
                : 8
                Affiliations
                [1 ] Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Biosistemática, Nuevo Léon, Mexico Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Biosistemática Nuevo Léon Mexico
                [2 ] Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Biosistemática, Nuevo León, Mexico Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Laboratorio de Biosistemática Nuevo León Mexico
                Author notes
                Corresponding authors: María Ana Ana Tovar-Hernández ( maria_ana_tovar@ 123456yahoo.com ), Jesús Angel de León-González ( deleongonzalez@ 123456gmail.com ).

                Academic editor: Sarah Faulwetter

                Article
                57471 14423
                10.3897/BDJ.8.e57471
                7561612
                María Ana Ana Tovar-Hernández, María Elena García-Garza, Jesús Angel de León-González

                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: 18, Tables: 2, References: 42
                Funding
                Fondo Sectorial de Investigación Ambiental SEMARNAT-CONACYT 2017-2018-A3-S-73811.INE/ADE/-013/2011
                Categories
                Taxonomic Paper
                Animalia
                Systematics
                Cenozoic
                Americas

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