Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel
Despite considerable work on the upper and lower lethal limits of insects, several major taxa have received little attention. We investigated the lower and upper thermal tolerances and cold hardiness strategy of Antarctopsocus jeanneli Badonnel (Psocoptera: Elipsocidae) from sub-Antarctic Marion Isl...
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Online Access: | http://hdl.handle.net/10019.1/11636 https://doi.org/10.1007/s00300-004-0649-6 |
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ftunstellenbosch:oai:scholar.sun.ac.za:10019.1/11636 2023-11-12T04:07:39+01:00 Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel Slabber S. Chown S.L. 2004 http://hdl.handle.net/10019.1/11636 https://doi.org/10.1007/s00300-004-0649-6 unknown Polar Biology 28 1 7224060 doi:10.1007/s00300-004-0649-6 http://hdl.handle.net/10019.1/11636 freeze tolerance mortality supercooling Indian Ocean Indian Ocean islands Marion Island oceanic regions Prince Edward Islands World Hexapoda Insecta Psocidae Psocoptera Article 2004 ftunstellenbosch https://doi.org/10.1007/s00300-004-0649-6 2023-10-22T07:20:08Z Despite considerable work on the upper and lower lethal limits of insects, several major taxa have received little attention. We investigated the lower and upper thermal tolerances and cold hardiness strategy of Antarctopsocus jeanneli Badonnel (Psocoptera: Elipsocidae) from sub-Antarctic Marion Island. A. jeanneli is freeze intolerant and, more specifically, moderately chill tolerant. Field fresh A. jeanneli had a mean supercooling point (SCP) of -11.1°C, whereas LT50 was -7.7°C, indicating pre-freeze mortality. A. jeanneli responds to acclimation: mean SCP increased from -15.8°C at a treatment temperature of 0 to -7.3°C at 15°C, as a result of a shift in the proportion of individuals in the high and low groups of the bimodal SCP distribution. A. jeanneli has upper thermal tolerances that are lower than those of other insect species on Marion Island, but within the range of expected microhabitat temperatures. Further study will establish whether freeze intolerance is characteristic of Psocoptera. © Springer-Verlag 2004. Article Article in Journal/Newspaper Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands Stellenbosch University: SUNScholar Research Repository Antarctic Indian Polar Biology |
institution |
Open Polar |
collection |
Stellenbosch University: SUNScholar Research Repository |
op_collection_id |
ftunstellenbosch |
language |
unknown |
topic |
freeze tolerance mortality supercooling Indian Ocean Indian Ocean islands Marion Island oceanic regions Prince Edward Islands World Hexapoda Insecta Psocidae Psocoptera |
spellingShingle |
freeze tolerance mortality supercooling Indian Ocean Indian Ocean islands Marion Island oceanic regions Prince Edward Islands World Hexapoda Insecta Psocidae Psocoptera Slabber S. Chown S.L. Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
topic_facet |
freeze tolerance mortality supercooling Indian Ocean Indian Ocean islands Marion Island oceanic regions Prince Edward Islands World Hexapoda Insecta Psocidae Psocoptera |
description |
Despite considerable work on the upper and lower lethal limits of insects, several major taxa have received little attention. We investigated the lower and upper thermal tolerances and cold hardiness strategy of Antarctopsocus jeanneli Badonnel (Psocoptera: Elipsocidae) from sub-Antarctic Marion Island. A. jeanneli is freeze intolerant and, more specifically, moderately chill tolerant. Field fresh A. jeanneli had a mean supercooling point (SCP) of -11.1°C, whereas LT50 was -7.7°C, indicating pre-freeze mortality. A. jeanneli responds to acclimation: mean SCP increased from -15.8°C at a treatment temperature of 0 to -7.3°C at 15°C, as a result of a shift in the proportion of individuals in the high and low groups of the bimodal SCP distribution. A. jeanneli has upper thermal tolerances that are lower than those of other insect species on Marion Island, but within the range of expected microhabitat temperatures. Further study will establish whether freeze intolerance is characteristic of Psocoptera. © Springer-Verlag 2004. Article |
format |
Article in Journal/Newspaper |
author |
Slabber S. Chown S.L. |
author_facet |
Slabber S. Chown S.L. |
author_sort |
Slabber S. |
title |
Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
title_short |
Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
title_full |
Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
title_fullStr |
Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
title_full_unstemmed |
Thermal tolerance and cold hardiness strategy of the sub-Antarctic psocid Antarctopsocus jeanneli Badonnel |
title_sort |
thermal tolerance and cold hardiness strategy of the sub-antarctic psocid antarctopsocus jeanneli badonnel |
publishDate |
2004 |
url |
http://hdl.handle.net/10019.1/11636 https://doi.org/10.1007/s00300-004-0649-6 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands |
genre_facet |
Antarc* Antarctic Marion Island Polar Biology Prince Edward Islands |
op_relation |
Polar Biology 28 1 7224060 doi:10.1007/s00300-004-0649-6 http://hdl.handle.net/10019.1/11636 |
op_doi |
https://doi.org/10.1007/s00300-004-0649-6 |
container_title |
Polar Biology |
_version_ |
1782328235384635392 |