کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1974877 1060391 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energetics and thermoregulation during digging in the rodent tuco-tuco (Ctenomys talarum)
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Energetics and thermoregulation during digging in the rodent tuco-tuco (Ctenomys talarum)
چکیده انگلیسی

For subterranean rodents, searching for food by extension of the tunnel system and maintenance of body temperature are two of the most important factors affecting their life underground. In this study we assess the effect of ambient temperature on energetics and thermoregulation during digging in Ctenomys talarum. We measured V˙o2 during digging and resting at ambient temperature (Ta) below, within, and above thermoneutrality. Digging metabolic rate was lowest at Ta within the thermoneutral zone and increased at both lower and higher temperatures, but body temperature (Tb) remained constant at all Tas. Below thermoneutrality, the cost of digging and thermoregulation are additive. Heat production for thermoregulation would be compensated by heat produced as a by-product of muscular activity during digging. Above thermoneutrality, conduction would be an important mechanism to maintain a constant Tb during digging.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 146, Issue 4, April 2007, Pages 559–564
نویسندگان
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