Behavioral thermoregulation by high arctic butterflies. Arctic 23(4

ABSTRACT. Behavioural thermoregulation is an important adaptation of the five high arctic butterflies found at Lake Hazen (81 “49‘N., 71 18’W.), Ellesmere Island, Northwest Territories. Direct insolation is used by arctic butterflies to increase their body temperatures. They select basking substrate...

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Bibliographic Details
Main Authors: P. G. Kevan, J. D. Shorthouses
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 1970
Subjects:
Arctic
Ellesmere Island
Lake Hazen
Northwest Territories
Arctique*
Territoires du Nord-Ouest
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.500.5231
http://pubs.aina.ucalgary.ca/arctic/Arctic23-4-268.pdf
Description
Summary:ABSTRACT. Behavioural thermoregulation is an important adaptation of the five high arctic butterflies found at Lake Hazen (81 “49‘N., 71 18’W.), Ellesmere Island, Northwest Territories. Direct insolation is used by arctic butterflies to increase their body temperatures. They select basking substrates and precisely orientate their wings with respect to the sun. Some experiments illustrate the importance of this. Wing morphology, venation, colour, hairiness, and physiology are briefly discussed. RI~SUMÉ. Comportement thermo-régulatoire des papillons du haut Arctique. Chez cinq especes de papillons trouvés au lac Hazen (81”49 ’ N, 71 ” 18 ’ W), île d’Elles-mere, Territoires du Nord-Ouest, le comportement thermo-régulatoire est une im-portante adaptation. Ces papillons arctiques se servent de l’insolation directe pour augmenter la température de leur corps: ils choisissent des sous-strates réchauffantes et orientent leurs ailes de façon précise par rapport au soleil. Quelques expériences ont confirmé l’importance de ce fait. On discute brikvement de la morphologie alaire, de la couleur, de la pilosité et de la physiologie de ces insectes.

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