Scaling of body temperature in mammals and birds

1.We examine variation associated with phylogeny in the scaling of body temperature in endotherms, using data from 596 species of mammal and 490 species of bird. 2. Among higher groups of mammals there is statistically significant scaling of body temperature with mass in Marsupialia (positive), Ferae and Ungulata (both negative). In mammalian orders where data […]

Thermoregulation in African elephants (Loxodonta africana)

Four young adult elephant bulls aged 21-23 in the Letsatsing Game Reserve, a private reserve near Pilanesbury NP in South Africa, were the subjects of this study focused on body temperature. The elephant were trained to carry people were engaged in short term daily programmes for tourist or public education groups and normally spend the […]

Sensitivity and specificity of infrared thermography in detection of subclinical mastitis in dairy cows

The objectives of this experiment were to determine interrelationships among mastitis indicators and evaluate the subclinical mastitis detection ability of infrared thermography (IRT) in comparison with the California Mastitis Test (CMT). Somatic cell count (SCC), CMT, and udder skin surface temperature (USST) data were compiled from 62 Brown Swiss dairy cows (days in milk = […]

Thermal characteristics of wild and captive Micronesian kingfisher nesting habitats

Abstract 10.1002/zoo.20010.abs To provide information for managing the captive population of endangered Guam Micronesian kingfishers (Halcyon cinnamomina cinnamomina), four biologically relevant thermal metrics were compared among captive facilities on the United States mainland and habitats used by wild Micronesian kingfishers on the island of Pohnpei (H. c. reichenbachii), Federated States of Micronesia. Additionally, aviaries where […]

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 […]

Tooth loss rate from two captive sandtiger sharks (Carcharias taurus)

Abstract 10.1002/(SICI)1098-2361(1999)18:43.3.CO;2-4 For 6 months, two sandtiger sharks (Carcharias taurus) were held captive together in a small enclosure at the Lisbon Zoo. During that period, the gravel was monitored daily for teeth shed by the animals. At the end of their stay, the number of teeth divided by the number of days yielded a tooth […]

Coming in out of the cold: Animal keeping in temperate zone zoos

Remote monitoring of parental incubation conditions in the greater sandhill crane

Abstract 10.1002/zoo.1430140209.abs To monitor incubation conditions in nests of greater sandhill cranes, a radiotrans-mitting egg was built using six temperature sensors, a position sensor, and a light sensor. Sensor readings were received, along with time of observations, and stored in a computer. The egg was used to monitor incubation in nests of six pairs of […]

Temperature influences the coercive mating and swimming performance of male eastern mosquitofish

Although the functional consequences of temperature variation have been examined for a wide range of whole-animal performance traits, the implications of thermal variation for reproductive behaviour or performance are poorly known. I examined the acute effects of temperature on the mating behaviour and swimming performance of male eastern mosquitofish, Gambusia holbrooki, which rely on a […]

Effects of capture and temperature stresses on plasma steroid concentrations in male tuatara (Sphenodon punctatus)

The effects of capture and temperature stresses on plasma concentrations of testosterone (T) and progesterone (P) were examined in wild male tuatara (Sphenodon punctatus), the only living sphenodontid reptile. Free-roaming male tuatara on Stephens Island, New Zealand, had low levels (0.3–0.5 ng/ml) of plasma T in July (winter), and high levels (15–17 ng/ml) in January […]