Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)

Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean).— Patella ferruginea is the most endangered endemic marine invertebrate on the Western Mediterranean coasts according to the European Council Directive 92/43/...

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Autor: Espinosa Torre, Free
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/45159
Acceso en línea:http://hdl.handle.net/11441/45159
Access Level:acceso abierto
Palabra clave:Patella ferruginea
Algeria
Conservation
Limpet.
Conservación
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oai_identifier_str oai:idus.us.es:11441/45159
network_acronym_str ES
network_name_str España
spelling Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean) Espinosa Torre, Free Patella ferruginea Algeria Conservation Limpet. Conservación Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean).— Patella ferruginea is the most endangered endemic marine invertebrate on the Western Mediterranean coasts according to the European Council Directive 92/43/EEC. A total of 1,017 individuals were recorded in the present study along western Algerian islands, with mean densities ranging from 0.8 to 35.3 ind/m per linear transect and averages of 4.8 ind/m per linear transect for Western Habibas Island and 22 ind/m for Plane Island, making these islands a hot spot for the species in the Mediterranean. The expected total number of specimens in Habibas would therefore be 50,400. The mean size of P. ferruginea on the Habibas Islands (4.45 cm) was significantly (p < 0.001) greater than on Plane Island (2.78 cm). Recruitment was high in Plane Island and the northern sector of the western Habibas Islands. Large adults had very conical shells. The fact that Habibas Islands is now a marine reserve could explain these differences in populations. Conservation of these populations should be a priority in order to avoid extinction of the species. Estado de las poblaciones del molusco protegido Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) en las islas argelinas (SO Mediterráneo).— Patella ferruginea es el invertebrado marino endémico más amenazado de las costas del Mediterráneo occidental según la Directiva 92/43 de la Unión Europea. En este estudio se registraron un total de 1.017 ejemplares en las islas occidentales argelinas, con densidades medias de 0,8 a 35,3 ind/m de transecto linear y valores medios de 4,8 ind/m en la isla Habibas occidental y de 22 ind/m en la isla Plana. Estas poblaciones representan un "punto caliente" de la especie a nivel de todo el Mediterráneo. La estima de población para las islas Habibas es de 50.400 individuos, uno de los más elevados para la especie. La talla media de P. ferruginea fue significativamente (p < 0,001) mayor en la isla Habibas occidental (4,45 cm) que en la isla Plana (2,78 cm). El reclutamiento fue muy elevado en la isla Plana y en el sector norte de la isla Habibas occidental. Los ejemplares de mayor talla muestran conchas muy cónicas. El establecimiento de una reserva marina en las islas Habibas podría explicar las diferencias halladas entre las poblaciones. La conservación de estas poblaciones debe ser una prioridad para evitar la definitiva extinción de la especie. Museu de Ciències Naturals http://hdl.handle.net/11441/45159
title Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
spellingShingle Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
Espinosa Torre, Free
Patella ferruginea
Algeria
Conservation
Limpet.
Conservación
title_short Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
title_full Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
title_fullStr Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
title_full_unstemmed Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
title_sort Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean)
author Espinosa Torre, Free
author_facet Espinosa Torre, Free
author_role author
topic Patella ferruginea
Algeria
Conservation
Limpet.
Conservación
topic_facet Patella ferruginea
Algeria
Conservation
Limpet.
Conservación
description Populational status of the endangered mollusc Patella ferruginea Gmelin, 1791 (Gastropoda, Patellidae) on Algerian islands (SW Mediterranean).— Patella ferruginea is the most endangered endemic marine invertebrate on the Western Mediterranean coasts according to the European Council Directive 92/43/EEC. A total of 1,017 individuals were recorded in the present study along western Algerian islands, with mean densities ranging from 0.8 to 35.3 ind/m per linear transect and averages of 4.8 ind/m per linear transect for Western Habibas Island and 22 ind/m for Plane Island, making these islands a hot spot for the species in the Mediterranean. The expected total number of specimens in Habibas would therefore be 50,400. The mean size of P. ferruginea on the Habibas Islands (4.45 cm) was significantly (p < 0.001) greater than on Plane Island (2.78 cm). Recruitment was high in Plane Island and the northern sector of the western Habibas Islands. Large adults had very conical shells. The fact that Habibas Islands is now a marine reserve could explain these differences in populations. Conservation of these populations should be a priority in order to avoid extinction of the species.
publishDate 2009
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eu_rights_str_mv openAccess
publisher Museu de Ciències Naturals
institution Universidad de Sevilla (US)
collection idUS. Depósito de Investigación de la Universidad de Sevilla
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
instname_str Universidad de Sevilla (US)
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publishDateSort 2009
author_browse Espinosa Torre, Free
publisherStr Museu de Ciències Naturals
score 6,924472

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