Refining the risk of freezing mortality for Antarctic terrestrial microarthropods
In studies of three common, freezing susceptible, Antarctic microarthropods, the springtail Cryptopygus antarcticus and the mites Alaskozetes antarcticus and Halozetes belgicae, we report (i) the consequences on cold tolerance of cooling in contact with water, and (ii) the risk of freezing when held...
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2000
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ftnerc:oai:nora.nerc.ac.uk:20462 2023-05-15T13:09:54+02:00 Refining the risk of freezing mortality for Antarctic terrestrial microarthropods Convey, Peter Worland, M. Roger 2000 http://nora.nerc.ac.uk/id/eprint/20462/ unknown Royal Veterinary College Convey, Peter orcid:0000-0001-8497-9903 Worland, M. Roger. 2000 Refining the risk of freezing mortality for Antarctic terrestrial microarthropods. CryoLetters, 21 (6). 333-338. Publication - Article PeerReviewed 2000 ftnerc 2023-02-04T19:32:55Z In studies of three common, freezing susceptible, Antarctic microarthropods, the springtail Cryptopygus antarcticus and the mites Alaskozetes antarcticus and Halozetes belgicae, we report (i) the consequences on cold tolerance of cooling in contact with water, and (ii) the risk of freezing when held at temperatures above the typical freezing point (measured using standard techniques) for up to 12 h. The springtail showed no change in SCP distribution when in contact with freezing water while, in contrast, the mites showed clear shifts towards decreased cold tolerance, in addition to death of c. 33% of individuals during the freezing of the water. The springtail showed a bimodal SCP distribution, with the population divided into "high"(typically -8 to -12 degree C) and "low" (typically below -20 degree C) groups. Some animals held at temperatures above these values froze, over a timescale between minutes and several hours. These results highlight the danger of equating standard cold tolerance measures with mortality risk under more realistic water and thermal regimes. Article in Journal/Newspaper Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Springtail Natural Environment Research Council: NERC Open Research Archive Antarctic |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
In studies of three common, freezing susceptible, Antarctic microarthropods, the springtail Cryptopygus antarcticus and the mites Alaskozetes antarcticus and Halozetes belgicae, we report (i) the consequences on cold tolerance of cooling in contact with water, and (ii) the risk of freezing when held at temperatures above the typical freezing point (measured using standard techniques) for up to 12 h. The springtail showed no change in SCP distribution when in contact with freezing water while, in contrast, the mites showed clear shifts towards decreased cold tolerance, in addition to death of c. 33% of individuals during the freezing of the water. The springtail showed a bimodal SCP distribution, with the population divided into "high"(typically -8 to -12 degree C) and "low" (typically below -20 degree C) groups. Some animals held at temperatures above these values froze, over a timescale between minutes and several hours. These results highlight the danger of equating standard cold tolerance measures with mortality risk under more realistic water and thermal regimes. |
format |
Article in Journal/Newspaper |
author |
Convey, Peter Worland, M. Roger |
spellingShingle |
Convey, Peter Worland, M. Roger Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
author_facet |
Convey, Peter Worland, M. Roger |
author_sort |
Convey, Peter |
title |
Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
title_short |
Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
title_full |
Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
title_fullStr |
Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
title_full_unstemmed |
Refining the risk of freezing mortality for Antarctic terrestrial microarthropods |
title_sort |
refining the risk of freezing mortality for antarctic terrestrial microarthropods |
publisher |
Royal Veterinary College |
publishDate |
2000 |
url |
http://nora.nerc.ac.uk/id/eprint/20462/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Springtail |
genre_facet |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Springtail |
op_relation |
Convey, Peter orcid:0000-0001-8497-9903 Worland, M. Roger. 2000 Refining the risk of freezing mortality for Antarctic terrestrial microarthropods. CryoLetters, 21 (6). 333-338. |
_version_ |
1766203727776055296 |