Coyotes (Canis latrans) have colonized northeastern North America only within the past 10-80 yr. We examined feces of coyotes in 2000-01 at three sites in New York (USA) to survey parasites in the… (More)
The thermal environment experienced during embryonic development can profoundly affect the phenotype, and potentially the fitness, of ectothermic animals. We examined the effect of incubation… (More)
Among ectotherms, individuals raised in cooler temperatures often have larger body size and/or larger cell size. The current study tested whether geographic variation in cell size and plasticity for… (More)
Darwin Day is an international celebration of Charles Darwin’s birthday, February 12, and is used as an occasion for education and outreach in evolutionary biology. I describe the history and… (More)
Methods for attaching radio transmitters to rock iguanas (genus Cyclura) are described and compared based on signal range, longevity of attachment, and potential disturbance to animal behavior or… (More)
Ranaviruses are emerging infectious diseases that infect amphibians, fish, and reptiles. Several cases of morbidity and mortality in captive and natural populations of reptiles have been attributed… (More)
Varied egg incubation temperatures can result in immediate effects on the phenotype of reptiles, and also latent effects that can augment or contradict effects evident at egg hatching. I examined the… (More)
—Tail autotomy serves as an aid to escape predators in many lizards, but potential costs include loss of fat stores, impaired locomotion, loss of social status, and reduced growth and reproductive… (More)
Geographic variation in body size is of special interest because it affects nearly all aspects of an organism’s life. I examined whether differences in body size among four populations of the green… (More)
Anolis carolinensis is an emerging model species and the sole member of its genus native to the United States. Considerable morphological and physiological variation has been described in the… (More)