Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus
Rarely observed Greenland Sharks, Somniosus microcephalus, were recorded at shallow depths by divers employing underwater video in the St. Lawrence River, in association with a seasonal concentration of Capelin (Mallotus villosus) in May-June 2003. We recorded unique proximity-induced display motor...
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ftjcfn:oai:canadianfieldnaturalist.ca:article/145 2024-09-15T17:54:24+00:00 Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus Harvey-Clark, Chris J. Gallant, Jeffrey J. Batt, John H. 2005-07-01 application/pdf https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145 https://doi.org/10.22621/cfn.v119i3.145 eng eng The Ottawa Field-Naturalists' Club https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145/145 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145 doi:10.22621/cfn.v119i3.145 The Canadian Field-Naturalist; Vol. 119 No. 3 (2005); 355-358 0008-3550 Chondricthyes Squaliformes Somnosidae Greenland Shark Somniosus microcephalus display behaviour copepod Ommatokoita elongata info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2005 ftjcfn https://doi.org/10.22621/cfn.v119i3.145 2024-08-06T03:02:00Z Rarely observed Greenland Sharks, Somniosus microcephalus, were recorded at shallow depths by divers employing underwater video in the St. Lawrence River, in association with a seasonal concentration of Capelin (Mallotus villosus) in May-June 2003. We recorded unique proximity-induced display motor patterns in these sharks, which have not been recorded in underwater observations of Arctic Greenland Sharks. Arctic sharks have a high incidence of blindness due to an ocular copepod parasite, Ommatokoita elongata. The absence of parasite-induced blindness in St. Lawrence Greenland Sharks, in contrast to endemic blindness in the Arctic population, may allow sharks in this region to more readily visually recognize the presence of conspecifics and potential prey. Improved visual acuity may therefore allow St. Lawrence River sharks to express a different behavioural repertoire than Arctic sharks, with resulting changes in intra- and inter-specific aggression and predatory behaviour. Article in Journal/Newspaper Arctic Population Greenland Somniosus microcephalus The Canadian Field-Naturalist The Canadian Field-Naturalist 119 3 355 |
institution |
Open Polar |
collection |
The Canadian Field-Naturalist |
op_collection_id |
ftjcfn |
language |
English |
topic |
Chondricthyes Squaliformes Somnosidae Greenland Shark Somniosus microcephalus display behaviour copepod Ommatokoita elongata |
spellingShingle |
Chondricthyes Squaliformes Somnosidae Greenland Shark Somniosus microcephalus display behaviour copepod Ommatokoita elongata Harvey-Clark, Chris J. Gallant, Jeffrey J. Batt, John H. Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
topic_facet |
Chondricthyes Squaliformes Somnosidae Greenland Shark Somniosus microcephalus display behaviour copepod Ommatokoita elongata |
description |
Rarely observed Greenland Sharks, Somniosus microcephalus, were recorded at shallow depths by divers employing underwater video in the St. Lawrence River, in association with a seasonal concentration of Capelin (Mallotus villosus) in May-June 2003. We recorded unique proximity-induced display motor patterns in these sharks, which have not been recorded in underwater observations of Arctic Greenland Sharks. Arctic sharks have a high incidence of blindness due to an ocular copepod parasite, Ommatokoita elongata. The absence of parasite-induced blindness in St. Lawrence Greenland Sharks, in contrast to endemic blindness in the Arctic population, may allow sharks in this region to more readily visually recognize the presence of conspecifics and potential prey. Improved visual acuity may therefore allow St. Lawrence River sharks to express a different behavioural repertoire than Arctic sharks, with resulting changes in intra- and inter-specific aggression and predatory behaviour. |
format |
Article in Journal/Newspaper |
author |
Harvey-Clark, Chris J. Gallant, Jeffrey J. Batt, John H. |
author_facet |
Harvey-Clark, Chris J. Gallant, Jeffrey J. Batt, John H. |
author_sort |
Harvey-Clark, Chris J. |
title |
Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
title_short |
Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
title_full |
Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
title_fullStr |
Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
title_full_unstemmed |
Vision and its Relationship to Novel Behaviour in St. Lawrence River Greenland Sharks, Somniosus microcephalus |
title_sort |
vision and its relationship to novel behaviour in st. lawrence river greenland sharks, somniosus microcephalus |
publisher |
The Ottawa Field-Naturalists' Club |
publishDate |
2005 |
url |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145 https://doi.org/10.22621/cfn.v119i3.145 |
genre |
Arctic Population Greenland Somniosus microcephalus |
genre_facet |
Arctic Population Greenland Somniosus microcephalus |
op_source |
The Canadian Field-Naturalist; Vol. 119 No. 3 (2005); 355-358 0008-3550 |
op_relation |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145/145 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/145 doi:10.22621/cfn.v119i3.145 |
op_doi |
https://doi.org/10.22621/cfn.v119i3.145 |
container_title |
The Canadian Field-Naturalist |
container_volume |
119 |
container_issue |
3 |
container_start_page |
355 |
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1810430734579531776 |