strateThermoregulation in the dry forest anole, Norops cupreus

Authors:Océane da Cunha, James Spies, Stephen P. Hudman, Chad E. Montgomery


Norops cupreus inhabits lowland dry forests and gallery forests along the Pacific Coast of Central America. We used operative temperature models (OTM) to examine the thermoregulation of this species in Parque Nacional Palo Verde (Costa Rica) by conducting a field study in February 2003. Norops cupreus in Palo Verde appeared to thermoregulate during early morning hours, late evening, and during the afternoon to maintain their body temperature (Tb) < 33°C. Lower capture rates during the midday suggest decreased activity of N. cupreus during this period, perhaps because they actively searched for the coolest environmental temperature (Te). During the rest of the day, N. cupreus appeared to thermoconform, with mean body temperatures tracking minimum available Te. These results are similar to other observations reported for N. cupreus in Central America.

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Angilletta, Jr., M. J., T. Hill, and M. A. Robson. 2002. Is physiological performance optimized by thermoregulatory behavior?: a case study of the eastern fence lizard, Sceloporus undulatus. Journal of Thermal Biology 27: 199–204.

Bakken, G. S. 1976. A heat transfer analysis of animals: unifying concepts and the application of metabolism chamber data to field ecology. Journal of Thermal Biology 60: 337–384.

Buckley, L. B., J. C. Ehrenberger, and M. J Angilletta. 2015. Thermoregulatory behaviour limits local adaptation of thermal niches and confers sensitivity to climate change. Functional Ecology 29: 1038–1047.

Clark, Jr., D. R. 1973. Temperature responses of three Costa Rican lizards (Anolis). Caribbean Journal of Science 13: 199–206.

Cowles R. B. and C. M. Bogert. 1944. Preliminary Study of the Thermal Requirements of Desert Reptiles. Bulletin of the American Museum of Natural History 83: 261–296.

Dodd, C. K., ed. 2016. Reptile ecology and conservation: A handbook of techniques. Oxford University Press.

Dunham A. E., B. W. Grant, and K. L. Overall. 1989. Interfaces between physiological ecology and the population ecology of terrestrial vertebrate ectotherms. Physiological Zoology 62: 335–355.

Dzialowski, E. M. 2005. Use of operative temperature and standard operative temperature models in thermal biology. Journal of Thermal Biology 30: 317–334.

Fitch, H. S. 1973. Observations of the population ecology of the Central American Iguanid lizard Anolis cupreus. Caribbean Journal of Science 13: 215–228.

Hertz, P. E., R. B. Huey, and R. D. Stevenson. 1993. Evaluating temperature regulation by field-active ectotherms: the fallacy of the inappropriate question. The American Naturalist 142: 796–818.

Huey, R. B., C. A. Deutsch, J. J. Tewksbury, L. J. Vitt, P. E. Hertz, H. J. Álvarez Pérez, and T. Garland Jr. 2009. Why tropical forest lizards are vulnerable to climate warming. Proceedings of the Royal Society B, Biological Sciences 276: 1939–1948.

Huey, R. B., M. R. Kearney, A. Krockenberger, J. A. Holtum, M. Jess, and S. E. Williams. 2012. Predicting organismal vulnerability to climate warming: roles of behaviour, physiology and adaptation. Philosophical Transactions of the Royal Society B 367: 1665–1679.

Huey, R. B. 1982. Temperature, physiology and the ecology of reptiles. Pp. 25–91 in Biology of the Reptilia Vol. 12, J. Gans and F. H. Pougrt (eds.). Academic Press.

Huey, R. B., and M. Slatkin. 1976. Cost and benefits of lizard thermoregulation. The Quarterly Review of Biology 51: 363–384.

Huey, R. B., and T. P. Webster. 1976. Thermal biology of Anolis lizards in a complex fauna: the Cristatellus group on Puerto Rico. Ecology 57: 985–994.

IPCC. 2016. Global Warming of 1.5 ºC. IPCC Rept.

Lister B. C. 1976. The nature of the niche expansion in West Indian Anolis lizards I: ecological consequences of reduced competition. Evolution 30: 659–676.

Pough, F. H., R. M. Andrews, J. E. Cadle, M. L. Crump, A. H. Savitzky, and K. D. Wells. 2001. Herpetology. New Jersey: Prentice Hall.

Ricklefs, R. E. 1990. Ecology. W. H. Freeman and Company.

R Core Team. 2009. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.

Savage, J. M. 2002. The Amphibians and Reptiles of Costa Rica. The University of Chicago Press.

Sears, M. W. and M. J. Angilletta Jr. 2015. Costs and benefits of thermoregulation revisited: both the heterogeneity and spatial structure of temperature drive energetic costs. The American Naturalist 185: E94–E102.

Whitfield, S. M., K. E. Bell, T. Philippi, M. Sasa, F. Bolaños, G. Chaves, J. M Savage, and M. A. Donnelly. 2007. Amphibian and reptile declines over 35 years at La Selva, Costa Rica. Proceedings of the National Academy of Sciences of the United States of America. 104: 8352–8356.

Wills, C. A. and S. J. Beaupre. 2000. An application of randomization for detecting evidence of Thermoregulation in Timber Rattlesnakes (Crotalus horridus) from Northwest Arkansas. Physiological and Biochemical Zoology 73: 325–334.

Woolrich-Piña, G. A., G. R. Smith, J. A. Lemos-Espinal, and J. P. Ramírez-Silva. 2015. Do gravid female Anolis nebulosus thermoregulate differently than males and non-gravid females? Journal of Thermal Biology 52: 84–89.


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