Basking behaviour in two sympatric herbivorous lizards (Liolaemidae: Phymaturus) from the Payunia volcanic region of Argentina

被引:12
作者
Corbalan, Valeria [1 ]
Debandi, Guillermo [1 ]
机构
[1] Consejo Nacl Invest Cient & Tecn, Inst Argentino Invest Zonas Aridas IADIZA, Mendoza, Argentina
关键词
activity peaks; coexistence; postural adjustments; rock lizards; THERMAL BIOLOGY; IGUANIA LIOLAEMIDAE; BODY TEMPERATURES; THERMOREGULATION; REPTILES; BENEFITS; FALLACY; ECOLOGY; PALLUMA;
D O I
10.1080/00222933.2012.759291
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
We studied several aspects of the thermal biology of two coexisting saxicolous species of the genus Phymaturus (Liolaemidae) at the Payunia, a volcanic region in Argentina where harsh conditions prevail. We marked individuals in grids and assessed the environmental conditions when the individuals showed their maximum activity (i.e. when more than 50% of marked individuals were active), the time spent basking, and the postural behaviour in relation to different cloudiness conditions. We found that temperatures recorded when the species exhibit their peaks of activity were higher for Phymaturus payuniae, the smaller species, during the summer at one of the three studied sites. Phymaturus roigorum exhibited the longest basking periods, but during these longer periods cloudy conditions prevailed. Both species adopted a head-up posture when conditions were sunny and a head-down posture when under cloudy conditions. This is the first contribution where thermal aspects of two sympatric species of Phymaturus are evaluated.
引用
收藏
页码:1365 / 1378
页数:14
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