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...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/3038879 https://doi.org/10.1007/s00300-020-02792-2 |
id |
ftninstnf:oai:brage.nina.no:11250/3038879 |
---|---|
record_format |
openpolar |
spelling |
ftninstnf:oai:brage.nina.no:11250/3038879 2023-05-15T13:03:59+02:00 Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect Bartlett, Jesamine Convey, Peter Hughes, K.A. Thorpe, S.E. Hayward, S.A.L. Signy Island, South Orkney Islands, South Georgia, Antarctica 2021 application/pdf https://hdl.handle.net/11250/3038879 https://doi.org/10.1007/s00300-020-02792-2 eng eng Andre: d British Antarctic Survey (Grant No. CASS121) Andre: Natural Environment Research Council (Grant No. RRBN19276 Polar Biology. 2021, 44 (1), 209-216. urn:issn:0722-4060 https://hdl.handle.net/11250/3038879 https://doi.org/10.1007/s00300-020-02792-2 cristin:1905070 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors CC-BY 209-216 44 Polar Biology 1 Near-surface drifters Chironomidae Salinity tolerance Invasive species Insect Physiology Climate change VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2021 ftninstnf https://doi.org/10.1007/s00300-020-02792-2 2022-12-21T23:45:15Z 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 frst 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 submer gence for up to 21 days, but submerged egg sacs had signifcantly 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 ofshore 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 efective biosecurity measures and demonstrates the role that currently undocumented pathways may have in dispersing non-native species. publishedVersion Article in Journal/Newspaper Adelaide Island Antarc* Antarctic Antarctic Peninsula Antarctica Polar Biology Signy Island South Orkney Islands Norwegian Institute for Nature Research: Brage NINA 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 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
Near-surface drifters Chironomidae Salinity tolerance Invasive species Insect Physiology Climate change VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
Near-surface drifters Chironomidae Salinity tolerance Invasive species Insect Physiology Climate change VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Bartlett, Jesamine Convey, Peter Hughes, K.A. Thorpe, S.E. Hayward, S.A.L. Ocean currents as a potential dispersal pathway for Antarctica’s most persistent non-native terrestrial insect |
topic_facet |
Near-surface drifters Chironomidae Salinity tolerance Invasive species Insect Physiology Climate change VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
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 frst 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 submer gence for up to 21 days, but submerged egg sacs had signifcantly 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 ofshore 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 efective biosecurity measures and demonstrates the role that currently undocumented pathways may have in dispersing non-native species. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Bartlett, Jesamine Convey, Peter Hughes, K.A. Thorpe, S.E. Hayward, S.A.L. |
author_facet |
Bartlett, Jesamine Convey, Peter Hughes, K.A. Thorpe, S.E. Hayward, S.A.L. |
author_sort |
Bartlett, Jesamine |
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 |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/3038879 https://doi.org/10.1007/s00300-020-02792-2 |
op_coverage |
Signy Island, South Orkney Islands, South Georgia, Antarctica |
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_source |
209-216 44 Polar Biology 1 |
op_relation |
Andre: d British Antarctic Survey (Grant No. CASS121) Andre: Natural Environment Research Council (Grant No. RRBN19276 Polar Biology. 2021, 44 (1), 209-216. urn:issn:0722-4060 https://hdl.handle.net/11250/3038879 https://doi.org/10.1007/s00300-020-02792-2 cristin:1905070 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors |
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 |
_version_ |
1766349577074507776 |