Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas
The isolated Southern Ocean has given rise to specially adapted, endemic species. The uniformity of physical conditions within the Southern Ocean south of the Polar Front is thought to limit latitudinal differences in shell size and growth of these species. The small bivalve Lissarca notorcadensis i...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Elsevier
2006
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/40/ https://doi.org/10.1016/j.dsr2.2006.02.003 |
id |
ftnerc:oai:nora.nerc.ac.uk:40 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:40 2024-06-09T07:39:28+00:00 Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas Cope, Therese Linse, Katrin 2006 http://nora.nerc.ac.uk/id/eprint/40/ https://doi.org/10.1016/j.dsr2.2006.02.003 unknown Elsevier Cope, Therese; Linse, Katrin orcid:0000-0003-3477-3047 . 2006 Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas. Deep-Sea Research Part II,, 53 (8-10). 903-911. https://doi.org/10.1016/j.dsr2.2006.02.003 <https://doi.org/10.1016/j.dsr2.2006.02.003> Zoology Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.1016/j.dsr2.2006.02.003 2024-05-15T08:39:04Z The isolated Southern Ocean has given rise to specially adapted, endemic species. The uniformity of physical conditions within the Southern Ocean south of the Polar Front is thought to limit latitudinal differences in shell size and growth of these species. The small bivalve Lissarca notorcadensis is one of the most successful colonisers with a wide circum-Antarctic distribution. We collected specimens from three areas of the Southern Ocean: the Scotia arc, the Weddell Sea and the Ross Sea and examined their shell morphometrics. The regression lines of the shell length/height relationships were similar. However, whilst specimens from the Weddell and Ross Sea were almost identical, the Scotia arc specimens had consistently shorter shell heights at similar shell length. The average body size (shell length/height) per sample location plotted against latitude showed a decrease over the latitudinal range between 53°′S and 73°S. The differences observed between the three geographically separate areas, concurrent with this latitudinal cline, were examined further using ANOVA. Significant differences were found between populations of the Scotia arc and the Weddell Sea as well as between populations of the Scotia arc and the Ross Sea, but there were no significant differences between the populations of the Weddell and Ross Seas. The Scotia arc further divided into two significantly different groups, the Shag Rocks populations and the populations from islands of the southern arc. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Ross Sea Shag Rocks ENVELOPE(-42.033,-42.033,-53.550,-53.550) Southern Ocean Weddell Weddell Sea Deep Sea Research Part II: Topical Studies in Oceanography 53 8-10 903 911 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Zoology |
spellingShingle |
Zoology Cope, Therese Linse, Katrin Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
topic_facet |
Zoology |
description |
The isolated Southern Ocean has given rise to specially adapted, endemic species. The uniformity of physical conditions within the Southern Ocean south of the Polar Front is thought to limit latitudinal differences in shell size and growth of these species. The small bivalve Lissarca notorcadensis is one of the most successful colonisers with a wide circum-Antarctic distribution. We collected specimens from three areas of the Southern Ocean: the Scotia arc, the Weddell Sea and the Ross Sea and examined their shell morphometrics. The regression lines of the shell length/height relationships were similar. However, whilst specimens from the Weddell and Ross Sea were almost identical, the Scotia arc specimens had consistently shorter shell heights at similar shell length. The average body size (shell length/height) per sample location plotted against latitude showed a decrease over the latitudinal range between 53°′S and 73°S. The differences observed between the three geographically separate areas, concurrent with this latitudinal cline, were examined further using ANOVA. Significant differences were found between populations of the Scotia arc and the Weddell Sea as well as between populations of the Scotia arc and the Ross Sea, but there were no significant differences between the populations of the Weddell and Ross Seas. The Scotia arc further divided into two significantly different groups, the Shag Rocks populations and the populations from islands of the southern arc. |
format |
Article in Journal/Newspaper |
author |
Cope, Therese Linse, Katrin |
author_facet |
Cope, Therese Linse, Katrin |
author_sort |
Cope, Therese |
title |
Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
title_short |
Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
title_full |
Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
title_fullStr |
Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
title_full_unstemmed |
Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas |
title_sort |
morphological differences in lissarca notorcadensis melvill and standen, 1907 from the scotia, weddell and ross seas |
publisher |
Elsevier |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/40/ https://doi.org/10.1016/j.dsr2.2006.02.003 |
long_lat |
ENVELOPE(-42.033,-42.033,-53.550,-53.550) |
geographic |
Antarctic Ross Sea Shag Rocks Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Ross Sea Shag Rocks Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Ross Sea Southern Ocean Weddell Sea |
op_relation |
Cope, Therese; Linse, Katrin orcid:0000-0003-3477-3047 . 2006 Morphological differences in Lissarca notorcadensis Melvill and Standen, 1907 from the Scotia, Weddell and Ross Seas. Deep-Sea Research Part II,, 53 (8-10). 903-911. https://doi.org/10.1016/j.dsr2.2006.02.003 <https://doi.org/10.1016/j.dsr2.2006.02.003> |
op_doi |
https://doi.org/10.1016/j.dsr2.2006.02.003 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
53 |
container_issue |
8-10 |
container_start_page |
903 |
op_container_end_page |
911 |
_version_ |
1801379690180509696 |