Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite
The effects of long-term exposures to constant temperatures (+4, 0, −5, −10, −15 and −20°C) on the survival of a cryptostigmatid mite, Alaskozetes antarcticus, were studied during 1983–1984 on Signy Island, South Orkney Islands, in the maritime Antarctic. Field-fresh samples collected during the aus...
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ftnerc:oai:nora.nerc.ac.uk:522246 2023-05-15T13:09:54+02:00 Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite Cannon, Raymond J.C. 1987 http://nora.nerc.ac.uk/id/eprint/522246/ https://doi.org/10.1016/0022-1910(87)90116-8 unknown Elsevier Cannon, Raymond J.C. 1987 Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite. Journal of Insect Physiology, 33 (7). 509-521. https://doi.org/10.1016/0022-1910(87)90116-8 <https://doi.org/10.1016/0022-1910(87)90116-8> Publication - Article PeerReviewed 1987 ftnerc https://doi.org/10.1016/0022-1910(87)90116-8 2023-02-04T19:47:46Z The effects of long-term exposures to constant temperatures (+4, 0, −5, −10, −15 and −20°C) on the survival of a cryptostigmatid mite, Alaskozetes antarcticus, were studied during 1983–1984 on Signy Island, South Orkney Islands, in the maritime Antarctic. Field-fresh samples collected during the austral summer showed very large (e.g. about 60 percentage points) variations in survival when placed at constant temperatures, as a result of collection-date effects. Pretreatment acclimations (10-day) at +4 and 0°C (especially) reduced this variation. Short-term modulations in cold-hardiness levels were related to ambient temperature fluctuations. However, samples collected on the same occasion, from microhabitats 20 m apart, also showed significant cold-hardiness variation. For twelve summer samples, survival after 24 h at −15°C was highly correlated with supercooling capacity. Winter samples showed little variation in survival, interms of collection-date. Percentage survival remained greater than 85% at −5, −10 and −15°C, for exposures up to 100 days. Samples with median supercooling points of about −30°C, showed 52% survival after 250 days at −15°C, and 73% survival after 100 days at −20°C. At −15°C, supercooling capacity was used up at an estimated rate of 0.06 deg day−1, as a result of a time-temperature interaction effect on the probability of heterogeneous nucleation. Adult mites showed 78% survival after 21 days encasement in distilled water ice, at −15°C. Survival differences between post-larval stages were not detected. In conclusion, survival ability under controlled laboratory conditions appeared to exceed the requirements of average winter-habitat temperatures, but the effects of fluctuating and extreme temperatures require investigation. Supercooling points are considered to be accurate indicators of low-temperature survival capability in this species. Article in Journal/Newspaper Alaskozetes antarcticus Antarc* Antarctic antarcticus Signy Island South Orkney Islands Mite Natural Environment Research Council: NERC Open Research Archive Antarctic Austral South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Journal of Insect Physiology 33 7 509 521 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
The effects of long-term exposures to constant temperatures (+4, 0, −5, −10, −15 and −20°C) on the survival of a cryptostigmatid mite, Alaskozetes antarcticus, were studied during 1983–1984 on Signy Island, South Orkney Islands, in the maritime Antarctic. Field-fresh samples collected during the austral summer showed very large (e.g. about 60 percentage points) variations in survival when placed at constant temperatures, as a result of collection-date effects. Pretreatment acclimations (10-day) at +4 and 0°C (especially) reduced this variation. Short-term modulations in cold-hardiness levels were related to ambient temperature fluctuations. However, samples collected on the same occasion, from microhabitats 20 m apart, also showed significant cold-hardiness variation. For twelve summer samples, survival after 24 h at −15°C was highly correlated with supercooling capacity. Winter samples showed little variation in survival, interms of collection-date. Percentage survival remained greater than 85% at −5, −10 and −15°C, for exposures up to 100 days. Samples with median supercooling points of about −30°C, showed 52% survival after 250 days at −15°C, and 73% survival after 100 days at −20°C. At −15°C, supercooling capacity was used up at an estimated rate of 0.06 deg day−1, as a result of a time-temperature interaction effect on the probability of heterogeneous nucleation. Adult mites showed 78% survival after 21 days encasement in distilled water ice, at −15°C. Survival differences between post-larval stages were not detected. In conclusion, survival ability under controlled laboratory conditions appeared to exceed the requirements of average winter-habitat temperatures, but the effects of fluctuating and extreme temperatures require investigation. Supercooling points are considered to be accurate indicators of low-temperature survival capability in this species. |
format |
Article in Journal/Newspaper |
author |
Cannon, Raymond J.C. |
spellingShingle |
Cannon, Raymond J.C. Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
author_facet |
Cannon, Raymond J.C. |
author_sort |
Cannon, Raymond J.C. |
title |
Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
title_short |
Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
title_full |
Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
title_fullStr |
Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
title_full_unstemmed |
Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
title_sort |
effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite |
publisher |
Elsevier |
publishDate |
1987 |
url |
http://nora.nerc.ac.uk/id/eprint/522246/ https://doi.org/10.1016/0022-1910(87)90116-8 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(-45.595,-45.595,-60.708,-60.708) |
geographic |
Antarctic Austral South Orkney Islands Signy Island |
geographic_facet |
Antarctic Austral South Orkney Islands Signy Island |
genre |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Signy Island South Orkney Islands Mite |
genre_facet |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Signy Island South Orkney Islands Mite |
op_relation |
Cannon, Raymond J.C. 1987 Effects of low-temperature acclimation on the survival and cold tolerance of an antarctic mite. Journal of Insect Physiology, 33 (7). 509-521. https://doi.org/10.1016/0022-1910(87)90116-8 <https://doi.org/10.1016/0022-1910(87)90116-8> |
op_doi |
https://doi.org/10.1016/0022-1910(87)90116-8 |
container_title |
Journal of Insect Physiology |
container_volume |
33 |
container_issue |
7 |
container_start_page |
509 |
op_container_end_page |
521 |
_version_ |
1766204074943840256 |