215 research outputs found

    Taxonomy of the fouling cheilostome bryozoans, Schizoporella unicornis, (Johnston) and Schizoporella errata (Waters)

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    Figure 1. (A–D) Images of Wood's Pliocene specimen from the Coralline Crag, Suffolk (NHM B1675) described in Busk (1859). (A) Group of autozooids at growing edge of colony within small bivalve shell. (B) Autozooids exhibiting deep V-shaped sinus. (C) Frontal shield with paired avicularia and deep V-shaped sinus. (D) Detail of primary orifice and sinus. (E, F) Lectotype of Schizoporella unicornis [NHM 1847.16.174 (a)] bleached portion. (E) Group of autozooids at the distal edge of colony with adventitious avicularia, paired, single or absent. (F) Ovicellate autozooids showing radially aligned scalloped grooves. Scale bars: 500 µm (A); 250 µm (B); 100 µm (C, E); 50 µm (D,F).Published as part of Tompsett, Scott, Porter, Joanne S. & Taylor, Paul D., 2009, Taxonomy of the fouling cheilostome bryozoans Schizoporella unicornis (Johnston) and Schizoporella errata (Waters), pp. 2227-2243 in Journal of Natural History 43 (35-36) on page 2231, DOI: 10.1080/00222930903090140, http://zenodo.org/record/521715

    Checklist of the marine Bryozoa from Uruguay (Southwest Atlantic)

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    El conocimiento de la fauna marina de briozoos de Uruguay se basa principalmente en registros dispersos que se encuentran en estudios faunísticos locales y en los resultados taxonómicos de dos cruceros oceanográficos en el Atlántico sudoccidental, pero aún no se ha publicado un estudio exhaustivo para esta área. Este trabajo tiene como objetivo compilar una lista actualizada, que reúna toda la información publicada sobre la fauna de briozoos uruguayos. De los 73 taxones registrados, 30 (41%) solo se conocen de aguas profundas frente al Río de la Plata. Incluso considerando las especies que no han sido determinadas, el resultado muestra un alto grado de endemismo, como el ya demostrado para varios grupos bentónicos como Bivalvia, Ascidiacea y Pycnogonida. La ausencia de taxónomos locales de briozoos ha resultado en una situación sin precedentes, donde la fauna de briozoos de aguas profundas de Uruguay es más conocida que la de ambientes costeros y de plataforma. La principal conclusión de esta recopilación de la fauna de briozoos es que se deben realizar esfuerzos para coordinar la recolección y el estudio taxonómico de las colecciones de briozoos de zonas someras y de plataforma, para cerrar la brecha de conocimiento actual sobre la biodiversidad de este importante grupo de invertebrados marinos bentónicos.Knowledge of the marine bryozoan fauna of Uruguay is mostly based on scattered records found in local faunistic surveys and the taxonomic results of two oceanographic cruises to the Southwest Atlantic, but a comprehensive study has not yet been published for this area. This paper aims to compile an updated checklist, bringing together all the published information about the Uruguayan bryozoan fauna. Of the 73 recorded taxa, 30 (41%) are known only from deep waters off the Río de la Plata. Even considering undetermined species, these results show the high degree of endemism as it was already shown for several other benthic groups such as Bivalvia, Ascidiacea and Pycnogonida. The absence of local taxonomists on bryozoans has resulted in the unprecedented situation that the deep-sea bryozoan fauna of Uruguay is better known than the coastal and shelf representatives of the phylum. The main conclusion of this faunal compilation is that efforts should be made to coordinate the gathering and taxonomic study of shallow and shelf bryozoan collections to bridge the present knowledge gap about the biodiversity of this important group of marine benthic invertebrates.Fil: Vieira Ramalho, Laís. Universidade Federal Do Rio de Janeiro. Museu Nacional; BrasilFil: López Gappa, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Scarabino, Fabrizio. Ministerio de Educación y Cultura. Museo Nacional de Historia Natural; Urugua

    In search of phylogenetic congruence between molecular and morphological data in bryozoans with extreme adult skeletal heteromorphy

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    peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=tsab20© Crown Copyright 2015. This document is the author's final accepted/submitted version of the journal article. You are advised to consult the publisher's version if you wish to cite from it

    New and little-known Cheilostomata (Bryozoa, Gymnolaemata) from the NE Atlantic

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    Based on newly designated type material, four poorly known NE Atlantic cheilostome bryozoan species are redescribed and imaged: Cellaria harmelini d’Hondt from the northern Bay of Biscay, Hippomenella mucronelliformis (Waters) from Madeira, Myriapora bugei d’Hondt from the Azores, and Characodoma strangulatum, occurring from Mauritania to southern Portugal. Moreover, Notoplites saojorgensis sp. nov. from the Azores, formerly reported as Notoplites marsupiatus (Jullien), is newly described. The genus Hippomenella Canu & Bassler is transferred from the lepraliomorph family Escharinidae Tilbrook to the umbonulomorph family Romancheinidae Jullien

    Fossil Bryozoa

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    Thesis (M.A.)--Boston Universit

    Dismantling the Beania magellanica (Busk, 1852) species complex (Bryozoa, Cheilostomata): two new species from European waters

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    New research on bryozoans has determined that formerly widespread species are in many cases complexes of similar, but distinct, species with more restricted distributions. Notwithstanding, the limits of distribution are still unresolved for many taxa, and occasionally a wide distribution is confirmed. Beania magellanica has been considered a widespread species, distributed throughout the Southern Hemisphere, parts of northern Pacific and Atlantic Oceans and the Mediterranean Sea. This study examines the Magellanic-type material, together with other historic samples and new specimens collected in the western Mediterranean and Adriatic, and for the first time, presents specimens from the European North Atlantic. Morphological comparisons and biometric analysis show the existence of three different species among the specimens studied. A redescription of B. magellanica based on the type specimen is presented, and two new species are described: B. serrata sp. nov. from the Northeast Atlantic and B. mediterranea sp. nov. from the Mediterranean Sea. These results indicate that B. magellanica s.l. is a large complex of species and that most specimens from different parts of the world must be revisedThis research was conducted thanks to the funds granted by the Austrian Science Fund (FWF, project number AP28954-B29). The work of Karine Nascimento and Leandro M. Vieira was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, project numbers 142058/2015-7 and 422563/2016-1) and by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, project number 88881.135517/2016-01). Part of the revision of the samples was supported by the project “Fauna Ibérica: Briozoos II (Familia Cribrilinidae–Familia Watersiporidae)” (CGL2010-22267-C07-02), co-financed by the Ministerio de Economía y Competitividad (Spanish government) and FEDERS

    Puritan Expedition.

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    34 p. : map ; 24 cm.Includes bibliographical references (p. 30-34)."Tabulation (see table 1) of the bryozoans, Ectoprocta, and Entoprocta in the present collections reveals the numerical superiority of the suborder Cheilostomata, with 131 species. The Anasca Cheilostomata have 56 (Soule, 1959); the Ascophora Cheilostomata, 75 (Soule, 1961). The present report describes 15 species of the suborder Cyclostomata, 13 species of the suborder Ctenostomata, and one representative of the phylum Entoprocta. Thus the total number of species of bryozoans in the Puritan collection is 160. Further analysis of this Puritan collection reveals that there are 59 species reported from the Gulf of California for the first time. In addition, the Puritan collection adds 13 species to the Panamic faunal list, contains four species previously unknown to the waters of the eastern Pacific, and, lastly, adds nine new species, all in the suborder Cheilostomata, to the phylum. With the exception of the new species, all the bryozoans in the Puritan collection have been reported from faunal provinces other than the Panamic province. Additional collections and study will be needed to demonstrate instances of endemic species in the Gulf of California. At the completion of Osburn's study of the eastern Pacific bryozoans (1950-1953), 133 species were recorded from the Gulf of California. With the additional material provided by the Puritan-American Museum expedition, the bryozoan fauna of this region now numbers 200 species. In a recent paper (Soule, 1960), a brief account was given of the distribution and faunal affinities of the bryozoan fauna of both the Gulf of California and the Pacific coast of Baja California. It was based in part on Osburn's 1950-1953 monograph and in part on the study of the Puritan collection that was in progress at that time. This paper indicated, with regard to the bryozoans, that in its faunal affinities, the Gulf of California is decidedly Panamic in character. With the study of the Puritan collection now complete, the faunal affinity picture is not appreciably changed. As can be seen in table 1, the fauna is strongly Panamic, followed in decreasing order by representatives of the eastern Pacific (exclusive of the Panamic faunal province), the West Indies, and the Indo-Pacific. The study of the distributional pattern of the bryozoans of the Puritan collection within the Gulf of California reveals three areas, only slightly revised by additional material from the earlier study (Soule, 1960). As shown by the map (fig. 1), the southern one-third of the Gulf of California supports a bryozoan fauna that is distinctly tropical ... It is continuous with a region on the Pacific coast of Baja California ... In the Gulf of California, immediately north of the tropical area, is a central zone of transition ... On the Pacific coast of Baja California, there is a similar zone of transitional type ... In the Gulf of California, the remaining 300 linear miles north of the transitional zone possesses a fauna that can be referred to as subtropical ... A third zone is present on the Pacific coast of Baja California, which differs substantially from the northern area of the Gulf of California. Here, except for major embayments such as Scammon's Lagoon, is found a warm temperate fauna ... This zone extends from Point Eugenia northward above the political boundary between Baja California Norte and California, to meet the cool temperate waters at Point Conception, California"--P. 28-29

    Type and figured material from 'The Pliocene Bryozoa of the Countries' (Lagaaij, 1952) in the collection of the Royal Belgian Institute of Natural Sciences

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    Type and figured material of 32 species from Wilmarsdonk and Deurne-Zuid (Antwerp) featured in R. Lagaaij’s 1952 monograph ‘The Pliocene Bryozoa of the Low Countries’ is re-illustrated by scanning electron microscope, and catalogue details are given. The nomenclature of a number of species is updated. The Wilmarsdonk material, designated Scaldisian by Lagaaij, is considered to be from the Luchtbal Sands Member of the Lillo Formation

    Fouling Bryozoa from some Alexandria harbours, EGYPT. (II) Encrusting species

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    Polystyrene test panels immersed half a meter deep in the water were used to collect the fouling,encrusting Bryozoa at three harbours in Alexandria city. These were Abu Qir Harbour, the Eastern Harbourand El-Dekheila Harbour. Four species of encrusting bryozoa are recorded in the present study.These are Conopeum reticulum, Watersipora subtorquata, Cryptosula pallasiana and Schizoporella errata.The first species is affiliated to the Membraniporidae family , belonging to the suborder Anasca whilethe other three species are affiliated to the Watersiporidae, Cryptosulidae and Schizoporellidae familiesrespectively. These families belong to the suborder Ascophora. A re-description, supplied with full structuralillustrations of the recorded species is given. Moreover, the temporal and spatial distributions of thespecies recorded are provide
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