Intertidal and subtidal marine molluscs between Boca del Guafo and Elefantes Fjord, southern Chile

A study was made of marine molluscs collected in the fjord region of southern Chile, including the Jacaf and Puyuhuapi channels, Aysen Sound and the Quitralco and Cupquelan fjords. Samples were obtained during the Cimar 7- Fjords research cruise, of 8-20 July 2001. Collections of benthic samples wer...

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Bibliographic Details
Published in:Investigaciones marinas 2004-01, Vol.32 (2), p.71-89
Main Authors: Osorio, C, Reid, D G
Format: Article
Language:Spanish
Subjects:
Aeneator fontainei
Bivalvia
Calliostoma consimilis
Calliostoma nudiusculum
Capulus compressus
Falsilunatia patagonica
Fissidentalium majorinum
Gastropoda
Marine
Polyplacophora
Rhabdus perceptum
Scaphopoda
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Summary:A study was made of marine molluscs collected in the fjord region of southern Chile, including the Jacaf and Puyuhuapi channels, Aysen Sound and the Quitralco and Cupquelan fjords. Samples were obtained during the Cimar 7- Fjords research cruise, of 8-20 July 2001. Collections of benthic samples were made between Boca del Guafo and the Elefantes fjord. Samples were taken by hand with an Agassiz trawl from 20 stations at various depths between 0 and 330 m. A total of 22 species were recorded (1 polyplacophoran, 7 gastropod, 12 bivalve and 2 scaphopod). Of these, 19 are described and illustrated, together with new information on habitat and geographical distribution. We report new geographical records for the following seven species: Calliostoma nudiusculum, Calliostoma consimilis, Capulus compressus, Falsilunatia patagonica, Aeneator fontainei, Fissidentalium majorinum and Rhabdus perceptum, six of these are northward extensions of the magellanic molluscan fauna while the record of Aenaeator fontainei is a new southern limit.Original Abstract: Se analizan los moluscos marinos recolectados en los canales Jacaf y Puyuhuapi, seno de Aysen y esteros Quitralco y Cupquelan, en el area de fiordos del sur de Chile. Las muestras se obtuvieron durante el crucero de investigacion Cimar 7 Fiordos, realizado entre el 8 y 20 de julio de 2001. La recoleccion de muestras bentonicas se realizo entre la Boca del Guafo y estero Elefantes. Las muestras se obtuvieron manualmente y por medio de una rastra Agassiz en 20 estaciones a profundidades que variaron entre 0 y 330 m. Los resultados de este estudio permitieron reconocer 22 especies (1 poliplacoforo, 7 gastropodos, 12 bivalvos y 2 escafopodos). Se entrega la descripcion y la fotografia de 19 de ellas. Para cada especie se indican nuevos datos del habitat y su distribucion geografica. Se reconocieron siete especies como nuevos registros geograficos: Calliostoma nudiusculum, Calliostoma consimilis, Capulus compressus, Falsilunatia patagonica, Aeneator fontainei, Fissidentalium majorinum y Rhabdus perceptum, seis de ellas vinculadas con la malacofauna magallanica y solo Aeneator fontaine fue registrado anteriormente en la costa norte de Chile.
ISSN:0716-1069
0717-7178