New species of thyasiridae from a methane seepage area off concepcion, chile
A new species of Thyasira (T. methanophila n. sp.) is described from a methane seepage area off Concepcion, Chile (similar to 36 degrees S) at bathyal depths. This species shows affinity with other southern ocean species placed in the subgenus Maorithyas. The gross anatomy of the type species of Mao...
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Online Access: | http://hdl.handle.net/10533/197999 |
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ftconicyt:oai:localhost:10533/197999 2023-05-15T18:25:30+02:00 New species of thyasiridae from a methane seepage area off concepcion, chile SELLANES-LOPEZ, ROGELIO OLIVER, P. NZL AUCKLAND http://hdl.handle.net/10533/197999 doi:0 ENG eng MAGNOLIA PRESS instname: Conicyt reponame: Repositorio Digital RI2.0 info:eu-repo/grantAgreement/Fondef/D04I1111 info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477 http://hdl.handle.net/10533/197999 doi:0 wos: WOS:000233849900001 eissn: 1175-5334 issn: 1175-5326 info:eu-repo/semantics/openAccess ZOOTAXA (PRINT) info:eu-repo/semantics/article ftconicyt 2019-09-07T08:18:45Z A new species of Thyasira (T. methanophila n. sp.) is described from a methane seepage area off Concepcion, Chile (similar to 36 degrees S) at bathyal depths. This species shows affinity with other southern ocean species placed in the subgenus Maorithyas. The gross anatomy of the type species of Maorithyas, M. marama Fleming, 1950, is described for the first time. There are no gross anatomical differences in the ctendia, foot and gut, between the above taxa, which suggest that there are no differences anatomically between species living at seeps and species living in other environments. Furthermore, wider comparison of the shells suggests that the subgenus Maorithyas cannot be supported, as the differential characters grade into those of Thyasira. Scanning electron microscopy of the ctenidium, of T. methanophila, revealed filaments with closely packed bacteriocytes each with dense aggregations of small rod shaped bacteria each about 0.5 mu m in length. The bivalve is assumed to be highly dependent on the symbiotic relationship. A second thyasirid was recorded from worn valves only and is assigned to the genus Conchocele. The material is too fragmentary to describe but was compared with C. bisecta and C. novaeguinensis. Article in Journal/Newspaper Southern Ocean Repositorio Digital Conicyt RI 2.0 (Comisión Nacional de Investigación Científica y Tecnológica) Southern Ocean |
institution |
Open Polar |
collection |
Repositorio Digital Conicyt RI 2.0 (Comisión Nacional de Investigación Científica y Tecnológica) |
op_collection_id |
ftconicyt |
language |
English |
description |
A new species of Thyasira (T. methanophila n. sp.) is described from a methane seepage area off Concepcion, Chile (similar to 36 degrees S) at bathyal depths. This species shows affinity with other southern ocean species placed in the subgenus Maorithyas. The gross anatomy of the type species of Maorithyas, M. marama Fleming, 1950, is described for the first time. There are no gross anatomical differences in the ctendia, foot and gut, between the above taxa, which suggest that there are no differences anatomically between species living at seeps and species living in other environments. Furthermore, wider comparison of the shells suggests that the subgenus Maorithyas cannot be supported, as the differential characters grade into those of Thyasira. Scanning electron microscopy of the ctenidium, of T. methanophila, revealed filaments with closely packed bacteriocytes each with dense aggregations of small rod shaped bacteria each about 0.5 mu m in length. The bivalve is assumed to be highly dependent on the symbiotic relationship. A second thyasirid was recorded from worn valves only and is assigned to the genus Conchocele. The material is too fragmentary to describe but was compared with C. bisecta and C. novaeguinensis. |
format |
Article in Journal/Newspaper |
author |
SELLANES-LOPEZ, ROGELIO OLIVER, P. |
spellingShingle |
SELLANES-LOPEZ, ROGELIO OLIVER, P. New species of thyasiridae from a methane seepage area off concepcion, chile |
author_facet |
SELLANES-LOPEZ, ROGELIO OLIVER, P. |
author_sort |
SELLANES-LOPEZ, ROGELIO |
title |
New species of thyasiridae from a methane seepage area off concepcion, chile |
title_short |
New species of thyasiridae from a methane seepage area off concepcion, chile |
title_full |
New species of thyasiridae from a methane seepage area off concepcion, chile |
title_fullStr |
New species of thyasiridae from a methane seepage area off concepcion, chile |
title_full_unstemmed |
New species of thyasiridae from a methane seepage area off concepcion, chile |
title_sort |
new species of thyasiridae from a methane seepage area off concepcion, chile |
publisher |
MAGNOLIA PRESS |
url |
http://hdl.handle.net/10533/197999 |
op_coverage |
NZL AUCKLAND |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ZOOTAXA (PRINT) |
op_relation |
instname: Conicyt reponame: Repositorio Digital RI2.0 info:eu-repo/grantAgreement/Fondef/D04I1111 info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477 http://hdl.handle.net/10533/197999 doi:0 wos: WOS:000233849900001 eissn: 1175-5334 issn: 1175-5326 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766207015311376384 |