Experimental studies on the cold tolerance of Alaskozetes antarcticus
The cold tolerance mechanism of the Antarctic terrestrial mite Alaskozetes antarcticus (Michael) was investigated in cultured animals. Freezing is fatal in this species and winter survival occurs by means of supercooling, which is enhanced by the presence of glycerol in the body. There is an inverse...
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1980
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Online Access: | http://nora.nerc.ac.uk/id/eprint/525071/ https://doi.org/10.1016/0022-1910(80)90080-3 |
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ftnerc:oai:nora.nerc.ac.uk:525071 2023-05-15T13:09:53+02:00 Experimental studies on the cold tolerance of Alaskozetes antarcticus Young, S.R. Block, William 1980 http://nora.nerc.ac.uk/id/eprint/525071/ https://doi.org/10.1016/0022-1910(80)90080-3 unknown Elsevier Young, S.R.; Block, William. 1980 Experimental studies on the cold tolerance of Alaskozetes antarcticus. Journal of Insect Physiology, 26 (3). 189-200. https://doi.org/10.1016/0022-1910(80)90080-3 <https://doi.org/10.1016/0022-1910(80)90080-3> Publication - Article PeerReviewed 1980 ftnerc https://doi.org/10.1016/0022-1910(80)90080-3 2023-02-04T19:49:11Z The cold tolerance mechanism of the Antarctic terrestrial mite Alaskozetes antarcticus (Michael) was investigated in cultured animals. Freezing is fatal in this species and winter survival occurs by means of supercooling, which is enhanced by the presence of glycerol in the body. There is an inverse, linear relationship between the concentration of glycerol and the supercooling point, which may be as low as −30°C. Feeding detracts from supercooling ability by providing ice nucleators in the gut which initiate freezing at relatively high sub-zero temperatures. Experiments on the effects of various environmental factors showed that low temperature acclimation gave rise to increased glycerol concentrations and suppressed feeding, while desiccation also stimulated glycerol production. Photoperiod had no effect on cold tolerance in this species. The juvenile instars of A. antarcticus were found to possess a greater degree of low temperature tolerance than adults. Article in Journal/Newspaper Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Journal of Insect Physiology 26 3 189 200 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
The cold tolerance mechanism of the Antarctic terrestrial mite Alaskozetes antarcticus (Michael) was investigated in cultured animals. Freezing is fatal in this species and winter survival occurs by means of supercooling, which is enhanced by the presence of glycerol in the body. There is an inverse, linear relationship between the concentration of glycerol and the supercooling point, which may be as low as −30°C. Feeding detracts from supercooling ability by providing ice nucleators in the gut which initiate freezing at relatively high sub-zero temperatures. Experiments on the effects of various environmental factors showed that low temperature acclimation gave rise to increased glycerol concentrations and suppressed feeding, while desiccation also stimulated glycerol production. Photoperiod had no effect on cold tolerance in this species. The juvenile instars of A. antarcticus were found to possess a greater degree of low temperature tolerance than adults. |
format |
Article in Journal/Newspaper |
author |
Young, S.R. Block, William |
spellingShingle |
Young, S.R. Block, William Experimental studies on the cold tolerance of Alaskozetes antarcticus |
author_facet |
Young, S.R. Block, William |
author_sort |
Young, S.R. |
title |
Experimental studies on the cold tolerance of Alaskozetes antarcticus |
title_short |
Experimental studies on the cold tolerance of Alaskozetes antarcticus |
title_full |
Experimental studies on the cold tolerance of Alaskozetes antarcticus |
title_fullStr |
Experimental studies on the cold tolerance of Alaskozetes antarcticus |
title_full_unstemmed |
Experimental studies on the cold tolerance of Alaskozetes antarcticus |
title_sort |
experimental studies on the cold tolerance of alaskozetes antarcticus |
publisher |
Elsevier |
publishDate |
1980 |
url |
http://nora.nerc.ac.uk/id/eprint/525071/ https://doi.org/10.1016/0022-1910(80)90080-3 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite |
genre_facet |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Mite |
op_relation |
Young, S.R.; Block, William. 1980 Experimental studies on the cold tolerance of Alaskozetes antarcticus. Journal of Insect Physiology, 26 (3). 189-200. https://doi.org/10.1016/0022-1910(80)90080-3 <https://doi.org/10.1016/0022-1910(80)90080-3> |
op_doi |
https://doi.org/10.1016/0022-1910(80)90080-3 |
container_title |
Journal of Insect Physiology |
container_volume |
26 |
container_issue |
3 |
container_start_page |
189 |
op_container_end_page |
200 |
_version_ |
1766202820464214016 |