Ultraviolet light and reptiles, amphibians

Ultraviolet lighting is integral for the growth and maintenance of many reptile and amphibian species. But providing an adequate source of light can be challenging. Many disease processes seen by veterinarians are attributed to ultraviolet lighting deficiencies. In mammals, disease due to excess ultraviolet lighting has been noted, and some veterinarians feel this may be […]

The use of classical and operant conditioning in training aldabra tortoises (Geochelone gigantea) for venipuncture and other husbandry issues

A variety of nonhuman animals in zoo and research settings have been the subjects of classical and operant conditioning techniques. Much of the published work has focused on mammals, husbandry training, and veterinary issues. However, several zoos are training reptiles and birds for similar procedures, but there has been little of this work published. Using […]

The energetic savings of sleep versus temperature in the Desert Iguana (Dipsosaurus dorsalis) at three ecologically relevant temperatures

One of the proposed ecological functions of sleep is to conserve energy. The majority of studies that support this theory have been done on endothermic animals whose body temperatures drop during sleep due to the reduced neurological control of thermoregulation. In the present study, we examined typical temperatures to which the Desert Iguana, Dipsosaurus dorsalis, […]

The effects of prey species on food conversion efficiency and growth of an insectivorous lizard

Abstract 10.1002/zoo.20175.abs Little is known about the effects of different prey species on lizard growth. We conducted a 6-week study to determine the relative effects of prey species on growth parameters of hatchling western fence lizards, Sceloporus occidentalis. Lizards were fed house cricket nymphs, Acheta domesticus, or mealworm larvae, Tenebrio molitor. The effects of prey […]

First experiences with free-ranging giant day geckos (Phelsuma madagascariensis grandis, Gray 1870) in the masoala rainforest exhibit in Zurich Zoo, Switzerland

Abstract 10.1002/zoo.20104.abs Sixty giant day geckos (Phelsuma madagascariensis grandis) have been introduced into the Masoala rainforest exhibit of Zurich Zoo. Eighteen geckos were monitored during a 3-month study using the telemetry method. In general, the geckos were able to adapt well under these semi-natural conditions of the exhibit. The geckos accessed to nearly all locations […]

Cool temperatures elicit reproduction in a biologically invasive predator, the brown treesnake (Boiga irregularis)

Abstract 10.1002/zoo.10084.abs Two different temperature regimes for eliciting reproduction in male and females of the Guam form of the brown treesnake were investigated. Males and females maintained at 24°C followed by a 60-day cool period at 19°C exhibited substantial reproductive activity, and the females that produced clutches did so during a brief period after return […]

Whole-body nutrient composition of various ages of captive-bred bearded dragons (Pogona vitteceps) and adult wild anoles (Anolis carolinensis)

Abstract 10.1002/zoo.10055.abs Neonates, 11-day-old, and 17-day-old captive-bred bearded dragons (Pogona vitteceps) and wild-caught adult anoles (Anolis carolinensis) were chemically analyzed to determine the whole-body concentrations of vitamins E and A, crude protein, and minerals. Significant differences (P

Problem of reptile play: Environmental enrichment and play behavior in a captive Nile soft-shelled turtle, Trionyx triunguis

Abstract 10.1002/(SICI)1098-2361(1996)15:33.3.CO;2-R Giving captive animals the opportunity to interact with objects in a “playful” manner is often considered a method of environmental enrichment. However, the occurrence of play in nonavian reptiles is controversial and poorly documented. Similarly, the role of environmental enrichment in fostering psychological well-being in reptiles has been little studied. For several years, […]

Seasonal and interpopulational variation in plasma levels of corticosterone in the side-blotched lizard (Uta stansburiana)

We examine seasonal and interpopulational variation in field levels of corticosterone (B) in the lizard Uta stansburiana. Corticosterone is the primary reptilian glucocorticosteroid, and elevated levels of this hormone have been correlated with physiological stress under both field and laboratory conditions. Patterns of seasonal variation in plasma B were generally similar in males and females, […]

Noninvasive analysis of fecal reproductive hormone metabolites in female veiled chameleons (Chamaeleo calyptratus) by enzyme immunoassay

Abstract The noninvasive technique of gonadal steroid metabolite measurement in feces for evaluation of reproductive activity has proven an effective and important tool for population management in various captive species, but has not yet been validated and used in reptile species. In this study, enzyme immunoassays (EIAs) were validated for the analysis of fecal samples […]