Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica
Larvae of the high arctic caterpillar, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) spent most (60 %) of their time orienting towards the sun (i.e. basking) and only 20% feeding, primarily near midday. Larvae usually basked after feeding, then either fed again or moved to a new feedin...
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fthighwire:oai:open-archive.highwire.org:jexbio:138/1/181 2023-05-15T14:52:18+02:00 Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica KUKAL, OLGA HEINRICH, BERND DUMAN, JOHN G. 1988-09-01 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/138/1/181 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/138/1/181 Copyright (C) 1988, Company of Biologists Journal Articles TEXT 1988 fthighwire 2015-02-28T16:18:37Z Larvae of the high arctic caterpillar, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) spent most (60 %) of their time orienting towards the sun (i.e. basking) and only 20% feeding, primarily near midday. Larvae usually basked after feeding, then either fed again or moved to a new feeding site. Basking larvae reached their highest body temperatures (T b ) of 30°C ( 20°C in excess of the ambient temperature) when surrounded by snow on a calm day in the midday sun. Setae significantly decreased larval cooling rates. Maximal metabolic rates were attained in basking larvae, but at body temperatures below 10°C oxygen uptake was greatly reduced. Our studies indicate that G. groenlandica larvae are behaviourally adapted to utilize available solar radiation for growth and development. Text Arctic HighWire Press (Stanford University) Arctic |
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Journal Articles |
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Journal Articles KUKAL, OLGA HEINRICH, BERND DUMAN, JOHN G. Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
topic_facet |
Journal Articles |
description |
Larvae of the high arctic caterpillar, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) spent most (60 %) of their time orienting towards the sun (i.e. basking) and only 20% feeding, primarily near midday. Larvae usually basked after feeding, then either fed again or moved to a new feeding site. Basking larvae reached their highest body temperatures (T b ) of 30°C ( 20°C in excess of the ambient temperature) when surrounded by snow on a calm day in the midday sun. Setae significantly decreased larval cooling rates. Maximal metabolic rates were attained in basking larvae, but at body temperatures below 10°C oxygen uptake was greatly reduced. Our studies indicate that G. groenlandica larvae are behaviourally adapted to utilize available solar radiation for growth and development. |
format |
Text |
author |
KUKAL, OLGA HEINRICH, BERND DUMAN, JOHN G. |
author_facet |
KUKAL, OLGA HEINRICH, BERND DUMAN, JOHN G. |
author_sort |
KUKAL, OLGA |
title |
Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
title_short |
Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
title_full |
Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
title_fullStr |
Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
title_full_unstemmed |
Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica |
title_sort |
behavioural thermoregulation in the freeze-tolerant arctic caterpillar, gynaephora groenlandica |
publisher |
Company of Biologists |
publishDate |
1988 |
url |
http://jeb.biologists.org/cgi/content/short/138/1/181 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://jeb.biologists.org/cgi/content/short/138/1/181 |
op_rights |
Copyright (C) 1988, Company of Biologists |
_version_ |
1766323532010094592 |