A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Recently discovered hydrothermal vent fields on the East Scotia Ridge (ESR, 56–60°S, 30°W), Southern Ocean, and the South West Indian Ridge (SWIR, 37°S 49°E), Indian Ocean, host two closely related new species of peltospirid gastropods. Morphological and molecular (mitochondrial cytochrome c oxidase...
Published in: | Zoological Journal of the Linnean Society |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | https://eprints.soton.ac.uk/384870/ |
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ftsouthampton:oai:eprints.soton.ac.uk:384870 2023-08-27T04:12:11+02:00 A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) Chen, Chong Linse, Katrin Roterman, Christopher N. Copley, Jonathan T. Rogers, Alex D. 2015-10 https://eprints.soton.ac.uk/384870/ English eng Chen, Chong, Linse, Katrin, Roterman, Christopher N., Copley, Jonathan T. and Rogers, Alex D. (2015) A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae). Zoological Journal of the Linnean Society, 175 (2), 319-335. (doi:10.1111/zoj.12279 <http://dx.doi.org/10.1111/zoj.12279>). Article PeerReviewed 2015 ftsouthampton https://doi.org/10.1111/zoj.12279 2023-08-03T22:21:20Z Recently discovered hydrothermal vent fields on the East Scotia Ridge (ESR, 56–60°S, 30°W), Southern Ocean, and the South West Indian Ridge (SWIR, 37°S 49°E), Indian Ocean, host two closely related new species of peltospirid gastropods. Morphological and molecular (mitochondrial cytochrome c oxidase subunit I, COI) characterization justify the erection of Gigantopelta gen. nov. within the Peltospiroidae with two new species, Gigantopelta chessoia sp. nov. from ESR and Gigantopelta aegis sp. nov. from SWIR. They attain an extremely large size for the clade Neomphalina, reaching 45.7?mm in shell diameter. The oesophageal gland of both species is markedly enlarged. Gigantopelta aegis has a thick sulphide coating on both the shell and the operculum of unknown function. The analysis of a 579-bp fragment of the COI gene resulted in 19–28% pairwise distance between Gigantopelta and six other genera in Peltospiridae, whereas the range amongst those six genera was 12–28%. The COI divergence between the two newly described species of Gigantopelta was 4.43%. Population genetics analyses using COI (370?bp) of 30 individuals of each species confirmed their genetic isolation and indicate recent rapid demographic expansion in both species. Article in Journal/Newspaper Southern Ocean University of Southampton: e-Prints Soton East Scotia Ridge ENVELOPE(-29.250,-29.250,-57.917,-57.917) Indian Southern Ocean Zoological Journal of the Linnean Society 175 2 319 335 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Recently discovered hydrothermal vent fields on the East Scotia Ridge (ESR, 56–60°S, 30°W), Southern Ocean, and the South West Indian Ridge (SWIR, 37°S 49°E), Indian Ocean, host two closely related new species of peltospirid gastropods. Morphological and molecular (mitochondrial cytochrome c oxidase subunit I, COI) characterization justify the erection of Gigantopelta gen. nov. within the Peltospiroidae with two new species, Gigantopelta chessoia sp. nov. from ESR and Gigantopelta aegis sp. nov. from SWIR. They attain an extremely large size for the clade Neomphalina, reaching 45.7?mm in shell diameter. The oesophageal gland of both species is markedly enlarged. Gigantopelta aegis has a thick sulphide coating on both the shell and the operculum of unknown function. The analysis of a 579-bp fragment of the COI gene resulted in 19–28% pairwise distance between Gigantopelta and six other genera in Peltospiridae, whereas the range amongst those six genera was 12–28%. The COI divergence between the two newly described species of Gigantopelta was 4.43%. Population genetics analyses using COI (370?bp) of 30 individuals of each species confirmed their genetic isolation and indicate recent rapid demographic expansion in both species. |
format |
Article in Journal/Newspaper |
author |
Chen, Chong Linse, Katrin Roterman, Christopher N. Copley, Jonathan T. Rogers, Alex D. |
spellingShingle |
Chen, Chong Linse, Katrin Roterman, Christopher N. Copley, Jonathan T. Rogers, Alex D. A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
author_facet |
Chen, Chong Linse, Katrin Roterman, Christopher N. Copley, Jonathan T. Rogers, Alex D. |
author_sort |
Chen, Chong |
title |
A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
title_short |
A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
title_full |
A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
title_fullStr |
A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
title_full_unstemmed |
A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) |
title_sort |
new genus of large hydrothermal vent-endemic gastropod (neomphalina: peltospiridae) |
publishDate |
2015 |
url |
https://eprints.soton.ac.uk/384870/ |
long_lat |
ENVELOPE(-29.250,-29.250,-57.917,-57.917) |
geographic |
East Scotia Ridge Indian Southern Ocean |
geographic_facet |
East Scotia Ridge Indian Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Chen, Chong, Linse, Katrin, Roterman, Christopher N., Copley, Jonathan T. and Rogers, Alex D. (2015) A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae). Zoological Journal of the Linnean Society, 175 (2), 319-335. (doi:10.1111/zoj.12279 <http://dx.doi.org/10.1111/zoj.12279>). |
op_doi |
https://doi.org/10.1111/zoj.12279 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
175 |
container_issue |
2 |
container_start_page |
319 |
op_container_end_page |
335 |
_version_ |
1775356073161523200 |