Počet záznamů: 1

The insensitivity of thermal preferences to various thermal gradient profiles in newts

  1. 1.
    0360425 - UBO-W 2013 RIV JP eng J - Článek v odborném periodiku
    Marek, Vojtěch - Gvoždík, Lumír
    The insensitivity of thermal preferences to various thermal gradient profiles in newts.
    Journal of Ethology. Roč. 30, č. 1 (2012), s. 35-41 ISSN 0289-0771
    Grant CEP: GA ČR GAP506/10/2170; GA MŠk LC06073
    Výzkumný záměr: CEZ:AV0Z60930519
    Klíčová slova: Amphibians * Behavioural thermoregulation * Ectotherms * Preferred body temperatures * Thermal gradient * Triturus
    Kód oboru RIV: EG - Zoologie
    Impakt faktor: 1.000, rok: 2012

    Thermoregulatory behaviour is affected by various biotic and abiotic factors, which may cause a substantial bias in the laboratory estimates of preferred body temperatures (Tp). We examined thermoregulatory behaviour in alpine newts, Ichthyosaura (formerly Triturus) alpestris, in both horizontal linear and vertical nonlinear thermal gradients, to evaluate the influence of disparate water temperature distribution on their thermal preferences. Newt positions in thermal gradients differed from those in constant temperatures, which indicates their thermal preferences in both experimental set ups. The mean and range of body temperatures showed similar values in both types of aquatic thermal gradients. We concluded that under a sufficiently wide range of environmental temperatures, newt thermal preferences are largely insensitive to the thermal gradient profile. This supports the suitability of Tp estimates for further experimental and comparative studies in newts.
    Trvalý link: http://hdl.handle.net/11104/0197985