Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island
In this paper, we present measurements of haemolymph osmolality for individuals from 17 species of arthropods on Marion Island, including a mite, a spider, Collembola, Psocoptera, Coleoptera, Diptera and Lepidoptera. This is the largest such survey for a Southern Hemisphere habitat. We also screened...
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ftunstellenbosch:oai:scholar.sun.ac.za:10019.1/11645 2023-11-12T04:07:39+01:00 Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island Sinclair B.J. Chown S.L. 2002 http://hdl.handle.net/10019.1/11645 unknown Polar Biology 25 12 7224060 http://hdl.handle.net/10019.1/11645 arthropod cold tolerance hysteresis Indian Ocean Acari Araneae Arthropoda Coleoptera Collembola Diptera Isotomidae Isotomurus Isotomurus palustris Lepidoptera Phacelia congesta Psocoptera Yponomeutidae Article 2002 ftunstellenbosch 2023-10-22T07:30:01Z In this paper, we present measurements of haemolymph osmolality for individuals from 17 species of arthropods on Marion Island, including a mite, a spider, Collembola, Psocoptera, Coleoptera, Diptera and Lepidoptera. This is the largest such survey for a Southern Hemisphere habitat. We also screened these species for thermal hysteresis activity, and show that the lepidopteran Embryonopsis halticella has a haemolymph thermal hysteresis agent that imparts approximately 0.2°C of thermal hysteresis. This low level leads us to conclude that, in this mild habitat, it may have a role in preventing nucleation, rather than directly acting to depress the freezing point of whole caterpillars. Haemolymph osmolalities were generally concordant with published values for the groups examined. With the exception of Isotomurus cd. palustris acclimated at 5 and 10°C, we found no statistical evidence of acclimation altering the haemolymph osmolality for any of the arthropods investigated. Article Article in Journal/Newspaper Antarc* Antarctic Marion Island Polar Biology Mite Stellenbosch University: SUNScholar Research Repository Antarctic Indian |
institution |
Open Polar |
collection |
Stellenbosch University: SUNScholar Research Repository |
op_collection_id |
ftunstellenbosch |
language |
unknown |
topic |
arthropod cold tolerance hysteresis Indian Ocean Acari Araneae Arthropoda Coleoptera Collembola Diptera Isotomidae Isotomurus Isotomurus palustris Lepidoptera Phacelia congesta Psocoptera Yponomeutidae |
spellingShingle |
arthropod cold tolerance hysteresis Indian Ocean Acari Araneae Arthropoda Coleoptera Collembola Diptera Isotomidae Isotomurus Isotomurus palustris Lepidoptera Phacelia congesta Psocoptera Yponomeutidae Sinclair B.J. Chown S.L. Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
topic_facet |
arthropod cold tolerance hysteresis Indian Ocean Acari Araneae Arthropoda Coleoptera Collembola Diptera Isotomidae Isotomurus Isotomurus palustris Lepidoptera Phacelia congesta Psocoptera Yponomeutidae |
description |
In this paper, we present measurements of haemolymph osmolality for individuals from 17 species of arthropods on Marion Island, including a mite, a spider, Collembola, Psocoptera, Coleoptera, Diptera and Lepidoptera. This is the largest such survey for a Southern Hemisphere habitat. We also screened these species for thermal hysteresis activity, and show that the lepidopteran Embryonopsis halticella has a haemolymph thermal hysteresis agent that imparts approximately 0.2°C of thermal hysteresis. This low level leads us to conclude that, in this mild habitat, it may have a role in preventing nucleation, rather than directly acting to depress the freezing point of whole caterpillars. Haemolymph osmolalities were generally concordant with published values for the groups examined. With the exception of Isotomurus cd. palustris acclimated at 5 and 10°C, we found no statistical evidence of acclimation altering the haemolymph osmolality for any of the arthropods investigated. Article |
format |
Article in Journal/Newspaper |
author |
Sinclair B.J. Chown S.L. |
author_facet |
Sinclair B.J. Chown S.L. |
author_sort |
Sinclair B.J. |
title |
Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
title_short |
Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
title_full |
Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
title_fullStr |
Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
title_full_unstemmed |
Haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-Antarctic Marion Island |
title_sort |
haemolymph osmolality and thermal hysteresis activity in 17 species of arthropods from sub-antarctic marion island |
publishDate |
2002 |
url |
http://hdl.handle.net/10019.1/11645 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Marion Island Polar Biology Mite |
genre_facet |
Antarc* Antarctic Marion Island Polar Biology Mite |
op_relation |
Polar Biology 25 12 7224060 http://hdl.handle.net/10019.1/11645 |
_version_ |
1782328237083328512 |