Successful captive breeding of Mitchell’s water monitor, Varanus mitchelli (Mertens 1958), at Perth Zoo

Abstract Mitchell’s water monitors (Varanus mitchelli) have been maintained on display at Perth Zoo since 1997. They are generally a timid species but have been maintained and bred in a mixed species water feature exhibit. In this article we describe their captive management and behavior with an insight into their reproductive biology. Between 2002 and […]

Age specific fecundity, litter size, and sex ratio in the chacoan peccary (Catagonus wagneri)

Abstract 10.1002/(SICI)1098-2361(1997)16:43.3.CO;2-S Ten years of data on the reproductive biology of the Chacoan peccary (Catagonus wagneri) were analyzed to determine average litter size, sex ratio, timing of births, and individual and age-specific fecundity. Data were obtained from a captive herd of chacoan peccaries located in the western Paraguayan Chaco. Births peak in the austral spring […]

Hand-rearing, growth, and development of the red bird of paradise (Paradisaea rubra) at the New York Zoological Park

Abstract 10.1002/zoo.1430100104.abs Growth and development of six hand-reared red bird of paradise chicks was documented at the New York Zoological Park from March 1988 to May 1989. A total of 16 eggs were laid, of which 10 were fertile. Clutches consisted of two eggs and the female left the next infrequently during incubation. Two chicks […]

Individual breeding decisions and long-term reproductive strategy in the King Penguin Aptenodytes patagonicus

Although studied for 35 years, knowledge of the reproductive biology of the King Penguin Aptenodytes patagonicus remains incomplete. The chick requires more than 12 months of care, which extends the breeding cycle, including moult, to more than one year, i.e. the King Penguin is neither annual nor biennial. In an attempt to resolve ambiguities in […]

Coat and claws as new matrices for noninvasive long-term cortisol assessment in dogs from birth up to 30 days of age

The last stage of fetal development and the neonatal period represent the most critical phases for the mammals’ offspring. In the dog, the knowledge about the final intrauterine fetal development and biology, as well as about the neonatal physiology, remains scarce. Hormonal changes occurring in the last intrauterine fetal phase and during the early neonatal […]