Relation between body-size and thermoregulation behavior: postprandial thermophily in spiny-tailed agama Uromastyx acanthinura Bell

• Autorzy: Berec M. , Stara Z. , Polakova S.
• Języki publikacji: EN

Abstrakty

EN

Ectothermal vertebrates regulate their body temperature within definite limits to maintain physiological processes at their optimal levels. Among others, food processing and absorption are strongly temperature-dependent. Deficiency of adequate temperatures limits ectotherms in growth and maintenance. On the other hand, thermoregulatory behavior is costly and should be constrained by many factors. Using artificial thermal gradients (26–44℃ ), we measured temperature preferences of 10 spiny-tailed agamas (Uromastyx acanthinura) in controlled indoor experiment. Each lizard could choose place in the terrarium before and after feeding. Then, temperature preferences during pre-feeding and post-feeding periods were compared. We found significant increase of preferred temperature after feeding. Detailed view revealed that there is consistent influence of body size: bigger lizards maintained higher temperature during the whole experiment. We hypothesize that bigger potential predation risk on smaller lizards due to their size would force them to choose less optimal conditions.

Słowa kluczowe

EN

body temperature; feeding; lizard; Uromastyx acanthinura; thermoregulation; body size; behavioural thermoregulation

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2014
• Tom: 62
• Numer: 1
• Opis fizyczny: p.139-145,fig.,ref.

Twórcy

autor

Berec M.

• Faculty of Agriculture, University of South Bohemia, Studentska 13, 37005 Ceske Budejovice, Czech Republic

autor

Stara Z.

• Faculty of Agriculture, University of South Bohemia, Studentska 13, 37005 Ceske Budejovice, Czech Republic

autor

Polakova S.

• DAPHNE CR–Institute of Applied Ecology, Senovazne namesti 1736, 37001 Ceske Budejovice, Czech Republic

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