Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect
The non-native midge Eretmoptera murphyi is Antarctica’s most persistent non-native insect and is known to impact the terrestrial ecosystems. It inhabits by considerably increasing litter turnover and availability of soil nutrients. The midge was introduced to Signy Island, South Orkney Islands, fro...
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ftnerc:oai:nora.nerc.ac.uk:526344 2023-05-15T13:03:57+02:00 Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect Bartlett, Jesamine C. Convey, Peter Hughes, Kevin Thorpe, Sally Hayward, S.A.L. 2021-01-08 text http://nora.nerc.ac.uk/id/eprint/526344/ https://nora.nerc.ac.uk/id/eprint/526344/1/Bartlett2021_Article_OceanCurrentsAsAPotentialDispe.pdf https://link.springer.com/article/10.1007/s00300-020-02792-2 en eng Springer https://nora.nerc.ac.uk/id/eprint/526344/1/Bartlett2021_Article_OceanCurrentsAsAPotentialDispe.pdf Bartlett, Jesamine C.; Convey, Peter orcid:0000-0001-8497-9903 Hughes, Kevin orcid:0000-0003-2701-726X Thorpe, Sally orcid:0000-0002-5193-6955 Hayward, S.A.L. 2021 Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect. Polar Biology, 44 (2). 209-216. https://doi.org/10.1007/s00300-020-02792-2 <https://doi.org/10.1007/s00300-020-02792-2> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1007/s00300-020-02792-2 2023-02-04T19:49:55Z The non-native midge Eretmoptera murphyi is Antarctica’s most persistent non-native insect and is known to impact the terrestrial ecosystems. It inhabits by considerably increasing litter turnover and availability of soil nutrients. The midge was introduced to Signy Island, South Orkney Islands, from its native South Georgia, and routes of dispersal to date have been aided by human activities, with little known about non-human-assisted methods of dispersal. This study is the first to determine the potential for dispersal of a terrestrial invertebrate species in Antarctica by combining physiological sea water tolerance data with quantitative assessments of ocean current journey times. Fourth instar larvae tolerated sea water submergence for up to 21 days, but submerged egg sacs had significantly reduced hatching success. Using near-surface drifter data, we conclude that ocean current dispersal from Signy Island would not present a risk of species transfer beyond the South Orkney Islands on the tested timescales. However, if E. murphyi were to be introduced to the South Shetlands Islands or Adelaide Island, which are located offshore of the Antarctic Peninsula, there would be a risk of successful oceanic dispersal to neighbouring islands and the Antarctic Peninsula mainland. This study emphasises the need for effective biosecurity measures and demonstrates the role that currently undocumented pathways may have in dispersing non-native species. Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Polar Biology Signy Island South Orkney Islands Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Polar Biology 44 1 209 216 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The non-native midge Eretmoptera murphyi is Antarctica’s most persistent non-native insect and is known to impact the terrestrial ecosystems. It inhabits by considerably increasing litter turnover and availability of soil nutrients. The midge was introduced to Signy Island, South Orkney Islands, from its native South Georgia, and routes of dispersal to date have been aided by human activities, with little known about non-human-assisted methods of dispersal. This study is the first to determine the potential for dispersal of a terrestrial invertebrate species in Antarctica by combining physiological sea water tolerance data with quantitative assessments of ocean current journey times. Fourth instar larvae tolerated sea water submergence for up to 21 days, but submerged egg sacs had significantly reduced hatching success. Using near-surface drifter data, we conclude that ocean current dispersal from Signy Island would not present a risk of species transfer beyond the South Orkney Islands on the tested timescales. However, if E. murphyi were to be introduced to the South Shetlands Islands or Adelaide Island, which are located offshore of the Antarctic Peninsula, there would be a risk of successful oceanic dispersal to neighbouring islands and the Antarctic Peninsula mainland. This study emphasises the need for effective biosecurity measures and demonstrates the role that currently undocumented pathways may have in dispersing non-native species. |
format |
Article in Journal/Newspaper |
author |
Bartlett, Jesamine C. Convey, Peter Hughes, Kevin Thorpe, Sally Hayward, S.A.L. |
spellingShingle |
Bartlett, Jesamine C. Convey, Peter Hughes, Kevin Thorpe, Sally Hayward, S.A.L. Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
author_facet |
Bartlett, Jesamine C. Convey, Peter Hughes, Kevin Thorpe, Sally Hayward, S.A.L. |
author_sort |
Bartlett, Jesamine C. |
title |
Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
title_short |
Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
title_full |
Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
title_fullStr |
Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
title_full_unstemmed |
Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
title_sort |
ocean currents as a potential dispersal pathway for antarctica’s most persistent non-native terrestrial insect |
publisher |
Springer |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/526344/ https://nora.nerc.ac.uk/id/eprint/526344/1/Bartlett2021_Article_OceanCurrentsAsAPotentialDispe.pdf https://link.springer.com/article/10.1007/s00300-020-02792-2 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-68.914,-68.914,-67.762,-67.762) |
geographic |
Antarctic The Antarctic Antarctic Peninsula South Orkney Islands Signy Island Adelaide Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula South Orkney Islands Signy Island Adelaide Island |
genre |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Polar Biology Signy Island South Orkney Islands |
genre_facet |
Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Polar Biology Signy Island South Orkney Islands |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526344/1/Bartlett2021_Article_OceanCurrentsAsAPotentialDispe.pdf Bartlett, Jesamine C.; Convey, Peter orcid:0000-0001-8497-9903 Hughes, Kevin orcid:0000-0003-2701-726X Thorpe, Sally orcid:0000-0002-5193-6955 Hayward, S.A.L. 2021 Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect. Polar Biology, 44 (2). 209-216. https://doi.org/10.1007/s00300-020-02792-2 <https://doi.org/10.1007/s00300-020-02792-2> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-020-02792-2 |
container_title |
Polar Biology |
container_volume |
44 |
container_issue |
1 |
container_start_page |
209 |
op_container_end_page |
216 |
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1766348962535571456 |