Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone
The phylogenetic relationships of eight species of incirrate octopodid from western Antarctica were investigated using molecular sequence data from the mitochondrial 16s ribosomal RNA gene. The genus Pareledone, which is endemic to the Antarctic, was found to be polyphyletic. On the basis of this an...
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Online Access: | https://oceanrep.geomar.de/id/eprint/53175/ https://oceanrep.geomar.de/id/eprint/53175/1/3962.pdf https://doi.org/10.1007/s002270100687 |
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ftoceanrep:oai:oceanrep.geomar.de:53175 2023-05-15T14:00:49+02:00 Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone Allcock, A. Piertney, S. B. 2002-01-01 text https://oceanrep.geomar.de/id/eprint/53175/ https://oceanrep.geomar.de/id/eprint/53175/1/3962.pdf https://doi.org/10.1007/s002270100687 en eng Springer https://oceanrep.geomar.de/id/eprint/53175/1/3962.pdf Allcock, A. and Piertney, S. B. (2002) Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone. Marine Biology, 140 (1). pp. 129-135. DOI 10.1007/s002270100687 <https://doi.org/10.1007/s002270100687>. doi:10.1007/s002270100687 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2002 ftoceanrep https://doi.org/10.1007/s002270100687 2023-04-07T15:57:10Z The phylogenetic relationships of eight species of incirrate octopodid from western Antarctica were investigated using molecular sequence data from the mitochondrial 16s ribosomal RNA gene. The genus Pareledone, which is endemic to the Antarctic, was found to be polyphyletic. On the basis of this and previous morphological studies, it is suggested that species that are morphologically similar to Pareledone polymorpha should be removed from the genus. This simplifies the diagnosis of Pareledone: a new diagnosis is given. The subfamilies Eledoninae and Graneledoninae were also found to be polyphyletic. The applicability of using the presence of an ink sac as a taxonomic character to define the subfamilies is discussed. Loss of an ink sac is almost certainly an adaptation to depth and use of this character has produced an artificial classification with no evolutionary significance. As the other two subfamilies, Octopodinae and Bathypolypodinae, are also separated by this character, it is probable that all the subfamilies of the Octopodidae are polyphyletic. The use of subfamilies should therefore be discontinued until our understanding of the evolution of the family Octopodidae increases. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Marine Biology 140 1 129 135 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The phylogenetic relationships of eight species of incirrate octopodid from western Antarctica were investigated using molecular sequence data from the mitochondrial 16s ribosomal RNA gene. The genus Pareledone, which is endemic to the Antarctic, was found to be polyphyletic. On the basis of this and previous morphological studies, it is suggested that species that are morphologically similar to Pareledone polymorpha should be removed from the genus. This simplifies the diagnosis of Pareledone: a new diagnosis is given. The subfamilies Eledoninae and Graneledoninae were also found to be polyphyletic. The applicability of using the presence of an ink sac as a taxonomic character to define the subfamilies is discussed. Loss of an ink sac is almost certainly an adaptation to depth and use of this character has produced an artificial classification with no evolutionary significance. As the other two subfamilies, Octopodinae and Bathypolypodinae, are also separated by this character, it is probable that all the subfamilies of the Octopodidae are polyphyletic. The use of subfamilies should therefore be discontinued until our understanding of the evolution of the family Octopodidae increases. |
format |
Article in Journal/Newspaper |
author |
Allcock, A. Piertney, S. B. |
spellingShingle |
Allcock, A. Piertney, S. B. Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
author_facet |
Allcock, A. Piertney, S. B. |
author_sort |
Allcock, A. |
title |
Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
title_short |
Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
title_full |
Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
title_fullStr |
Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
title_full_unstemmed |
Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone |
title_sort |
evolutionary relationships of southern ocean octopodidae (cephalopoda: octopoda) and a new diagnosis of pareledone |
publisher |
Springer |
publishDate |
2002 |
url |
https://oceanrep.geomar.de/id/eprint/53175/ https://oceanrep.geomar.de/id/eprint/53175/1/3962.pdf https://doi.org/10.1007/s002270100687 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/53175/1/3962.pdf Allcock, A. and Piertney, S. B. (2002) Evolutionary relationships of Southern Ocean Octopodidae (Cephalopoda: Octopoda) and a new diagnosis of Pareledone. Marine Biology, 140 (1). pp. 129-135. DOI 10.1007/s002270100687 <https://doi.org/10.1007/s002270100687>. doi:10.1007/s002270100687 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s002270100687 |
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Marine Biology |
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140 |
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1 |
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129 |
op_container_end_page |
135 |
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1766270170135789568 |