Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic
The thermal preferences of Alaskozetes antarcticus (Acari, Cryptostigmata) and Cryptopygus antarcticus (Collembola, Isotomidae) were investigated over 6 h within a temperature gradient (−3 to +13 °C), under 100% relative humidity (RH) conditions. After 10 days of acclimation at −2 or +11 °C, individ...
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Royal Entomological Society
2003
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Online Access: | http://nora.nerc.ac.uk/id/eprint/17642/ https://doi.org/10.1046/j.1365-3032.2003.00327.x |
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ftnerc:oai:nora.nerc.ac.uk:17642 2023-05-15T13:09:53+02:00 Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic Hayward, S.A.L. Worland, M.R. Convey, P. Bale, J.S. 2003 http://nora.nerc.ac.uk/id/eprint/17642/ https://doi.org/10.1046/j.1365-3032.2003.00327.x unknown Royal Entomological Society Hayward, S.A.L.; Worland, M.R.; Convey, P. orcid:0000-0001-8497-9903 Bale, J.S. 2003 Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic. Physiological Entomology, 28 (2). 114-121. https://doi.org/10.1046/j.1365-3032.2003.00327.x <https://doi.org/10.1046/j.1365-3032.2003.00327.x> Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.1046/j.1365-3032.2003.00327.x 2023-02-04T19:31:13Z The thermal preferences of Alaskozetes antarcticus (Acari, Cryptostigmata) and Cryptopygus antarcticus (Collembola, Isotomidae) were investigated over 6 h within a temperature gradient (−3 to +13 °C), under 100% relative humidity (RH) conditions. After 10 days of acclimation at −2 or +11 °C, individual supercooling points (SCP) and thermopreferences were assessed, and compared with animals maintained for 10 days under fluctuating field conditions (−6 to +7 °C). Acclimation at −2 °C lowered the mean SCP of both A. antarcticus (−24.2 ± 9.1) and C. antarcticus (−14.7 ± 7.7) compared to field samples (−19.0 ± 9.0 and −10.7 ± 5.2, respectively). Acclimation at +11 °C increased A. antarcticus mean SCP values (−13.0 ± 8.5) relative to field samples, whereas those of C. antarcticus again decreased (−16.7 ± 9.1). Mites acclimated under field conditions or at +11 °C selected temperatures between −3 and +1 °C. After acclimation at −2 °C, both species preferred +1 to +5 °C. Cryptopygus antarcticus maintained under field conditions preferred +5 to +9 °C, whereas individuals acclimated at +11 °C selected +9 to +13 °C. For A. antarcticus, thermopreference was not influenced by its cold hardened state. The distribution of field specimens was further assessed within two combined temperature and humidity gradient systems: (i) 0–3 °C/12% RH, 3–6 °C/33% RH, 6–9 °C/75% RH and 9–12 °C/100% RH and (ii) 0–3 °C/100% RH, 3–6 °C/75% RH, 6–9 °C/33% RH and 9–12 °C/12% RH. In gradient (i), C. antarcticus distributed homogeneously, but, in gradient (ii), C. antarcticus preferred 0–3 °C/100% RH. Alaskozetes antarcticus selected temperatures between 0 and +6 °C regardless of RH conditions. Cryptopygus antarcticus appears better able than A. antarcticus to opportunistically utilize developmentally favourable thermal microclimates, when moisture availability is not restricted. The distribution of A. antarcticus appears more influenced by temperature, especially during regular freeze-thaw transitions, when this species may select low temperature ... Article in Journal/Newspaper Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Mite Natural Environment Research Council: NERC Open Research Archive Antarctic Physiological Entomology 28 2 114 121 |
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Natural Environment Research Council: NERC Open Research Archive |
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The thermal preferences of Alaskozetes antarcticus (Acari, Cryptostigmata) and Cryptopygus antarcticus (Collembola, Isotomidae) were investigated over 6 h within a temperature gradient (−3 to +13 °C), under 100% relative humidity (RH) conditions. After 10 days of acclimation at −2 or +11 °C, individual supercooling points (SCP) and thermopreferences were assessed, and compared with animals maintained for 10 days under fluctuating field conditions (−6 to +7 °C). Acclimation at −2 °C lowered the mean SCP of both A. antarcticus (−24.2 ± 9.1) and C. antarcticus (−14.7 ± 7.7) compared to field samples (−19.0 ± 9.0 and −10.7 ± 5.2, respectively). Acclimation at +11 °C increased A. antarcticus mean SCP values (−13.0 ± 8.5) relative to field samples, whereas those of C. antarcticus again decreased (−16.7 ± 9.1). Mites acclimated under field conditions or at +11 °C selected temperatures between −3 and +1 °C. After acclimation at −2 °C, both species preferred +1 to +5 °C. Cryptopygus antarcticus maintained under field conditions preferred +5 to +9 °C, whereas individuals acclimated at +11 °C selected +9 to +13 °C. For A. antarcticus, thermopreference was not influenced by its cold hardened state. The distribution of field specimens was further assessed within two combined temperature and humidity gradient systems: (i) 0–3 °C/12% RH, 3–6 °C/33% RH, 6–9 °C/75% RH and 9–12 °C/100% RH and (ii) 0–3 °C/100% RH, 3–6 °C/75% RH, 6–9 °C/33% RH and 9–12 °C/12% RH. In gradient (i), C. antarcticus distributed homogeneously, but, in gradient (ii), C. antarcticus preferred 0–3 °C/100% RH. Alaskozetes antarcticus selected temperatures between 0 and +6 °C regardless of RH conditions. Cryptopygus antarcticus appears better able than A. antarcticus to opportunistically utilize developmentally favourable thermal microclimates, when moisture availability is not restricted. The distribution of A. antarcticus appears more influenced by temperature, especially during regular freeze-thaw transitions, when this species may select low temperature ... |
format |
Article in Journal/Newspaper |
author |
Hayward, S.A.L. Worland, M.R. Convey, P. Bale, J.S. |
spellingShingle |
Hayward, S.A.L. Worland, M.R. Convey, P. Bale, J.S. Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
author_facet |
Hayward, S.A.L. Worland, M.R. Convey, P. Bale, J.S. |
author_sort |
Hayward, S.A.L. |
title |
Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
title_short |
Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
title_full |
Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
title_fullStr |
Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
title_full_unstemmed |
Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic |
title_sort |
temperature preferences of the mite, alaskozetes antarcticus, and the collembolan, cryptopygus antarcticus from the maritime antarctic |
publisher |
Royal Entomological Society |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/17642/ https://doi.org/10.1046/j.1365-3032.2003.00327.x |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Mite |
genre_facet |
Alaskozetes antarcticus Antarc* Antarctic antarcticus Cryptopygus antarcticus Mite |
op_relation |
Hayward, S.A.L.; Worland, M.R.; Convey, P. orcid:0000-0001-8497-9903 Bale, J.S. 2003 Temperature preferences of the mite, Alaskozetes antarcticus, and the collembolan, Cryptopygus antarcticus from the maritime Antarctic. Physiological Entomology, 28 (2). 114-121. https://doi.org/10.1046/j.1365-3032.2003.00327.x <https://doi.org/10.1046/j.1365-3032.2003.00327.x> |
op_doi |
https://doi.org/10.1046/j.1365-3032.2003.00327.x |
container_title |
Physiological Entomology |
container_volume |
28 |
container_issue |
2 |
container_start_page |
114 |
op_container_end_page |
121 |
_version_ |
1766202997902147584 |