Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail
Multivariate analysis shows that shells of Notodiscus sp. (Charopidae: Pulmonata) reported from South Georgia are smaller and proportionately taller than, but otherwise similar to, populations of Notodiscus hookeri (Reeve) from Iles Crozet and Iles Kerguelen. The origin of this solitary, and spatial...
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Cambridge University Press
2011
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Online Access: | https://arro.anglia.ac.uk/id/eprint/301728/ https://doi.org/10.1017/S0954102011000289 |
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ftarro:oai:arro.anglia.ac.uk:301728 2023-05-15T13:55:12+02:00 Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail Pugh, Philip J. A. Lewis Smith, Ronald I. 2011-10 https://arro.anglia.ac.uk/id/eprint/301728/ https://doi.org/10.1017/S0954102011000289 unknown Cambridge University Press Pugh, Philip J. A. and Lewis Smith, Ronald I. (2011) Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail. Antarctic Science, 23 (5). pp. 442-448. ISSN 1365-2079 Journal Article PeerReviewed 2011 ftarro https://doi.org/10.1017/S0954102011000289 2022-11-20T21:31:28Z Multivariate analysis shows that shells of Notodiscus sp. (Charopidae: Pulmonata) reported from South Georgia are smaller and proportionately taller than, but otherwise similar to, populations of Notodiscus hookeri (Reeve) from Iles Crozet and Iles Kerguelen. The origin of this solitary, and spatially limited, South Georgia population is enigmatic. It is confined to a remarkably small coastal lowland site which was glaciated at Last Glacial Maximum, precluding a Tertiary relict origin, and on the leeward north-east coast, ruling out post-glacial ocean rafting. The site is close to the King Edward Point settlement, yet the absence of any logistics connections with the Iles Crozet or Iles Kerguelen mitigates against anthropogenic introduction. The close proximity of the population to nests of blue-eyed shag (Phalacrocorax atriceps), Dominican gull (Larus dominicanus) and light-mantled sooty albatross (Phoebetria palpebrata) could imply the snail was originally introduced to South Georgia via these ocean transiting seabirds. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Blue Eyed Shag Phalacrocorax atriceps Anglia Ruskin University: Anglia Ruskin Research Online (ARRO) Antarctic Kerguelen King Edward Point ENVELOPE(-36.496,-36.496,-54.284,-54.284) Antarctic Science 23 5 442 448 |
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Anglia Ruskin University: Anglia Ruskin Research Online (ARRO) |
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unknown |
description |
Multivariate analysis shows that shells of Notodiscus sp. (Charopidae: Pulmonata) reported from South Georgia are smaller and proportionately taller than, but otherwise similar to, populations of Notodiscus hookeri (Reeve) from Iles Crozet and Iles Kerguelen. The origin of this solitary, and spatially limited, South Georgia population is enigmatic. It is confined to a remarkably small coastal lowland site which was glaciated at Last Glacial Maximum, precluding a Tertiary relict origin, and on the leeward north-east coast, ruling out post-glacial ocean rafting. The site is close to the King Edward Point settlement, yet the absence of any logistics connections with the Iles Crozet or Iles Kerguelen mitigates against anthropogenic introduction. The close proximity of the population to nests of blue-eyed shag (Phalacrocorax atriceps), Dominican gull (Larus dominicanus) and light-mantled sooty albatross (Phoebetria palpebrata) could imply the snail was originally introduced to South Georgia via these ocean transiting seabirds. |
format |
Article in Journal/Newspaper |
author |
Pugh, Philip J. A. Lewis Smith, Ronald I. |
spellingShingle |
Pugh, Philip J. A. Lewis Smith, Ronald I. Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
author_facet |
Pugh, Philip J. A. Lewis Smith, Ronald I. |
author_sort |
Pugh, Philip J. A. |
title |
Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
title_short |
Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
title_full |
Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
title_fullStr |
Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
title_full_unstemmed |
Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail |
title_sort |
notodiscus (charopidae) on south georgia: some implications of shell size, shell shape, and site isolation in a singular sub-antarctic land snail |
publisher |
Cambridge University Press |
publishDate |
2011 |
url |
https://arro.anglia.ac.uk/id/eprint/301728/ https://doi.org/10.1017/S0954102011000289 |
long_lat |
ENVELOPE(-36.496,-36.496,-54.284,-54.284) |
geographic |
Antarctic Kerguelen King Edward Point |
geographic_facet |
Antarctic Kerguelen King Edward Point |
genre |
Antarc* Antarctic Antarctic Science Blue Eyed Shag Phalacrocorax atriceps |
genre_facet |
Antarc* Antarctic Antarctic Science Blue Eyed Shag Phalacrocorax atriceps |
op_relation |
Pugh, Philip J. A. and Lewis Smith, Ronald I. (2011) Notodiscus (Charopidae) on South Georgia: some implications of shell size, shell shape, and site isolation in a singular sub-Antarctic land snail. Antarctic Science, 23 (5). pp. 442-448. ISSN 1365-2079 |
op_doi |
https://doi.org/10.1017/S0954102011000289 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
5 |
container_start_page |
442 |
op_container_end_page |
448 |
_version_ |
1766261492435386368 |