First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic
Two large bivalve specimens collected in Bay d’Espoir, a deep fjord situated on the south coast of Newfoundland, are described and identified as belonging to the species Acesta excavata (Fabricius 1779). In situ observations onboard the manned submersible PISCES IV and color videos have provided inf...
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Language: | English |
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The Ottawa Field-Naturalists' Club
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Online Access: | https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748 https://doi.org/10.22621/cfn.v117i3.748 |
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ftjcfn:oai:canadianfieldnaturalist.ca:article/748 2023-05-15T17:20:52+02:00 First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic Gagnon, Jean-Marc Haedrich, Richard L. 2003-07-01 application/pdf https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748 https://doi.org/10.22621/cfn.v117i3.748 eng eng The Ottawa Field-Naturalists' Club https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748/748 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748 doi:10.22621/cfn.v117i3.748 The Canadian Field-Naturalist; Vol. 117 No. 3 (2003); 440-447 0008-3550 Acesta excavata European Giant File Clam Limidae Northwest Atlantic fjord Newfoundland info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2003 ftjcfn https://doi.org/10.22621/cfn.v117i3.748 2021-09-02T18:54:04Z Two large bivalve specimens collected in Bay d’Espoir, a deep fjord situated on the south coast of Newfoundland, are described and identified as belonging to the species Acesta excavata (Fabricius 1779). In situ observations onboard the manned submersible PISCES IV and color videos have provided information on the vertical distribution, density and habitat of the species. Maximum abundances of about 15 large individuals/m2 occurred on sheltered rock outcrops at depth ranging from 550 to 775 m, where warm (6°C) continental slope water is found. Differences in shape and thickness between the valves of the two specimens appear to be related to the degree of exposure to rock falls (i.e., sheltered versus exposed habitat). Prior to this account, the European Giant File Clam had never been encountered west of the Azores Islands in the North Atlantic. Article in Journal/Newspaper Newfoundland North Atlantic Northwest Atlantic The Canadian Field-Naturalist (E-Journal) The Canadian Field-Naturalist 117 3 440 |
institution |
Open Polar |
collection |
The Canadian Field-Naturalist (E-Journal) |
op_collection_id |
ftjcfn |
language |
English |
topic |
Acesta excavata European Giant File Clam Limidae Northwest Atlantic fjord Newfoundland |
spellingShingle |
Acesta excavata European Giant File Clam Limidae Northwest Atlantic fjord Newfoundland Gagnon, Jean-Marc Haedrich, Richard L. First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
topic_facet |
Acesta excavata European Giant File Clam Limidae Northwest Atlantic fjord Newfoundland |
description |
Two large bivalve specimens collected in Bay d’Espoir, a deep fjord situated on the south coast of Newfoundland, are described and identified as belonging to the species Acesta excavata (Fabricius 1779). In situ observations onboard the manned submersible PISCES IV and color videos have provided information on the vertical distribution, density and habitat of the species. Maximum abundances of about 15 large individuals/m2 occurred on sheltered rock outcrops at depth ranging from 550 to 775 m, where warm (6°C) continental slope water is found. Differences in shape and thickness between the valves of the two specimens appear to be related to the degree of exposure to rock falls (i.e., sheltered versus exposed habitat). Prior to this account, the European Giant File Clam had never been encountered west of the Azores Islands in the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
Gagnon, Jean-Marc Haedrich, Richard L. |
author_facet |
Gagnon, Jean-Marc Haedrich, Richard L. |
author_sort |
Gagnon, Jean-Marc |
title |
First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
title_short |
First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
title_full |
First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
title_fullStr |
First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
title_full_unstemmed |
First record of the European Giant File Clam, Acesta excavata (Bivalvia: Pectinoidea: Limidae), in the Northwest Atlantic |
title_sort |
first record of the european giant file clam, acesta excavata (bivalvia: pectinoidea: limidae), in the northwest atlantic |
publisher |
The Ottawa Field-Naturalists' Club |
publishDate |
2003 |
url |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748 https://doi.org/10.22621/cfn.v117i3.748 |
genre |
Newfoundland North Atlantic Northwest Atlantic |
genre_facet |
Newfoundland North Atlantic Northwest Atlantic |
op_source |
The Canadian Field-Naturalist; Vol. 117 No. 3 (2003); 440-447 0008-3550 |
op_relation |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748/748 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/748 doi:10.22621/cfn.v117i3.748 |
op_doi |
https://doi.org/10.22621/cfn.v117i3.748 |
container_title |
The Canadian Field-Naturalist |
container_volume |
117 |
container_issue |
3 |
container_start_page |
440 |
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1766102693569363968 |