Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist?
The dorvilleid polychaete Ophryotrocha orensanzi is reported from the vicinity of Casey station, East Antarctica, an astounding range extension from its previous records in the South Shetland Islands to the opposite side of the Antarctic continent, suggesting that it is a circumpolar species. Geneti...
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/b830ab35-00c6-4f68-8604-edca0da3194d 2024-09-15T17:45:38+00:00 Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? Paxton, Hannelore Wiklund, Helena Alexander, Frances Taboada, Sergi 2017-03-04 https://researchers.mq.edu.au/en/publications/b830ab35-00c6-4f68-8604-edca0da3194d https://doi.org/10.1080/14772000.2016.1218371 http://www.scopus.com/inward/record.url?scp=84988640234&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Paxton , H , Wiklund , H , Alexander , F & Taboada , S 2017 , ' Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? ' , Systematics and Biodiversity , vol. 15 , no. 2 , pp. 105-114 . https://doi.org/10.1080/14772000.2016.1218371 Antarctica Casey station Deception Island haplotype network K-type maxillae morphology nuchal papilla polychaete article 2017 ftmacquarieunicr https://doi.org/10.1080/14772000.2016.1218371 2024-08-28T23:47:18Z The dorvilleid polychaete Ophryotrocha orensanzi is reported from the vicinity of Casey station, East Antarctica, an astounding range extension from its previous records in the South Shetland Islands to the opposite side of the Antarctic continent, suggesting that it is a circumpolar species. Genetic studies confirmed the conspecificity and the inferred haplotype network suggests that the two populations studied are genetically connected. Morphological studies of the newly collected material revealed that the jaw apparatus consists of the P- and K-type, in accordance with other members of the ‘lobifera’ clade. We are reporting a previously undocumented button-like structure that we are referring to as ‘nuchal papilla’ for its association with the nuchal region, and present an emended diagnosis for the species. The Casey station population was collected in a clean, unpolluted intertidal environment associated with stones and seaweeds. We are challenging the generally held opinion that Ophryotrocha species are specialists of organically enriched substrates, suggesting that, at least for the particulars of O. orensanzi, they might also be unspecialized opportunists, able to exist in the most pristine environments and having the ability to rapidly increase their population sizes under favourable conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctica Deception Island East Antarctica South Shetland Islands Macquarie University Research Portal Systematics and Biodiversity 15 2 105 114 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
Antarctica Casey station Deception Island haplotype network K-type maxillae morphology nuchal papilla polychaete |
spellingShingle |
Antarctica Casey station Deception Island haplotype network K-type maxillae morphology nuchal papilla polychaete Paxton, Hannelore Wiklund, Helena Alexander, Frances Taboada, Sergi Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
topic_facet |
Antarctica Casey station Deception Island haplotype network K-type maxillae morphology nuchal papilla polychaete |
description |
The dorvilleid polychaete Ophryotrocha orensanzi is reported from the vicinity of Casey station, East Antarctica, an astounding range extension from its previous records in the South Shetland Islands to the opposite side of the Antarctic continent, suggesting that it is a circumpolar species. Genetic studies confirmed the conspecificity and the inferred haplotype network suggests that the two populations studied are genetically connected. Morphological studies of the newly collected material revealed that the jaw apparatus consists of the P- and K-type, in accordance with other members of the ‘lobifera’ clade. We are reporting a previously undocumented button-like structure that we are referring to as ‘nuchal papilla’ for its association with the nuchal region, and present an emended diagnosis for the species. The Casey station population was collected in a clean, unpolluted intertidal environment associated with stones and seaweeds. We are challenging the generally held opinion that Ophryotrocha species are specialists of organically enriched substrates, suggesting that, at least for the particulars of O. orensanzi, they might also be unspecialized opportunists, able to exist in the most pristine environments and having the ability to rapidly increase their population sizes under favourable conditions. |
format |
Article in Journal/Newspaper |
author |
Paxton, Hannelore Wiklund, Helena Alexander, Frances Taboada, Sergi |
author_facet |
Paxton, Hannelore Wiklund, Helena Alexander, Frances Taboada, Sergi |
author_sort |
Paxton, Hannelore |
title |
Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
title_short |
Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
title_full |
Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
title_fullStr |
Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
title_full_unstemmed |
Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? |
title_sort |
is the antarctic ophryotrocha orensanzi (annelida: dorvilleidae) a circumpolar non-specialized opportunist? |
publishDate |
2017 |
url |
https://researchers.mq.edu.au/en/publications/b830ab35-00c6-4f68-8604-edca0da3194d https://doi.org/10.1080/14772000.2016.1218371 http://www.scopus.com/inward/record.url?scp=84988640234&partnerID=8YFLogxK |
genre |
Antarc* Antarctic Antarctica Deception Island East Antarctica South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Deception Island East Antarctica South Shetland Islands |
op_source |
Paxton , H , Wiklund , H , Alexander , F & Taboada , S 2017 , ' Is the Antarctic Ophryotrocha orensanzi (Annelida: Dorvilleidae) a circumpolar non-specialized opportunist? ' , Systematics and Biodiversity , vol. 15 , no. 2 , pp. 105-114 . https://doi.org/10.1080/14772000.2016.1218371 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/14772000.2016.1218371 |
container_title |
Systematics and Biodiversity |
container_volume |
15 |
container_issue |
2 |
container_start_page |
105 |
op_container_end_page |
114 |
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1810493534115987456 |