+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Thermal ecology of the Australian agamid Pogona barbata



Thermal ecology of the Australian agamid Pogona barbata



Oecologia 114(4): 461-470



This study compares the thermal ecology of male bearded dragon lizards (Pogona barbata) from south-east Queensland across two seasons: summer (1994-1995) and autumn (1995). Seasonal patterns of body temperature (T b) were explored in terms of changes in the physical properties of the thermal environment and thermoregulatory effort. To quantify thermoregulatory effort, we compared behavioral and physiological variables recorded for observed lizards with those estimated for a thermoconforming lizard. The study lizards' field T bs varied seasonally (summer: grand daily mean (GDM) 34.6 ± 0.6°C, autumn: GDM 27.5 ± 0.3°C) as did maximum and minimum available operative temperatures (summer: GDM T max 42.1 ± 1.7°C, T min 32.2 ± 1.0°C, autumn: GDM T max 31.7 ± 1.2°C, T min 26.4 ± 0.5°C). Interestingly, the range of temperatures that lizards selected in a gradient (selected range) did not change seasonally. However, P. barbata thermoregulated more extensively and more accurately in summer than in autumn; lizards generally displayed behaviors affecting heat load nonrandomly in summer and randomly in autumn, leading to the GDM of the mean deviations of lizards' field T bs from their selected ranges being only 2.1 ± 0.5°C in summer, compared to 4.4 ± 0.5°C in autumn. This seasonal difference was not a consequence of different heat availability in the two seasons, because the seasonally available ranges of operative temperatures rarely precluded lizards from attaining field T bs within their selected range, should that have been the goal. Rather, thermal microhabitat distribution and social behavior appear to have had an important influence on seasonal levels of thermoregulatory effort.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 060382934

Download citation: RISBibTeXText

PMID: 28307895

DOI: 10.1007/s004420050470


Related references

Thermal ecology of the Australian agamid Pogona barbata. Oecologia (Berlin) 114(4): 461-470, 1998

Thermal Ecology of the Australian Agamid Pogona barbata. Oecologia 114(4): 461-470, 1998

Pogona barbata (Cuvier). Sauria, 151-4: 257-260 Suppl, 1993

Pogona barbata on Kangaroo Island, S.A. Herpetofauna (Sydney) 26(1): 28-30, 1996

Dragon wars: Movement-based signalling by Australian agamid lizards in relation to species ecology. Australian Journal of Ecology 41(3): 302-315, 2016

Thermal ecology of the forest dwelling agamid lizard japalura polygonata ishigakiensis. Journal of Herpetology 20(3): 333-340, 1986

Detection of Agamid Adenovirus-1 in clinically healthy bearded dragons (Pogona vitticeps) in the UK. Veterinary Record 172(18): 475, 2013

Unusual basking behaviour in captive bearded dragons (Pogona barbata). Herpetofauna (Sydney): 212: 31, 1991

Behaviour of the bearded dragon lizards Pogona barbata and P vitticeps in captivity. Herpetofauna (Sydney) 27(2): 28-32, 1997

Establishment of an agamid cell line and isolation of adenoviruses from central bearded dragons (Pogona vitticeps). Journal of Veterinary Diagnostic Investigation 26(2): 221-225, 2014

Genotype differentiation of Agamid Adenovirus 1 in bearded dragons (Pogona vitticeps) in the USA by hexon gene sequence. Infection Genetics and Evolution 9(4): 501-506, 2009

An overlooked senior synonym of Pogona barbata (Cuvier, 1829) (Squamata: Agamidae). Amphibia Reptilia 22(1): 124-127, 2001

The annual reproductive cycle and sperm storage in the bearded dragon, Pogona barbata. Australian Journal of Zoology 48(4): 411-419, 2000

Temperature and the respiratory properties of whole blood in two reptiles, Pogona barbata and Emydura signata. Comparative Biochemistry and Physiology. Part A Molecular and Integrative Physiology 143(2): 173-183, 2006

Allometry in the Bearded Dragon Pogona barbata (Sauria: Agamidae): Sex and geographic differences. Australian Zoologist 32(2): 238-245, 2003