Movement Patterns and Food Habits of Four Sympatric Carnivore Species in Belize, Central America
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Carnivorous mammals: nutrient digestibility and energy evaluation
Abstract Estimating the energy content is the first step in diet formulation, as it determines the amount of food eaten and hence the concentration of nutrients required to meet the animal’s requirements. Additionally, being able to estimate the energy content of a diet empirically known to maintain body condition in an animal will facilitate an […]
Characterization of basal seminal traits and reproductive endocrine profiles in North American river otters and Asian small-clawed otters
Abstract 10.1002/zoo.20206.abs In this study, fecal samples were collected from 24 North American river (NARO) and 17 Asian small-clawed otters (ASCO) for 6–36 months and semen collected seasonally from NARO males (n=4/season) via electroejaculation. Our main objectives were to: (1) characterize endocrine parameters by longitudinal monitoring of fecal hormone metabolites and (2) investigate semen collection […]
Photoperiod manipulation to increase the productivity of black-footed ferrets (Mustela nigripes) and Siberian polecats (M. eversmanii)
Abstract 10.1002/zoo.10066.abs The endangered black-footed ferret (Mustela nigripes) reproduces naturally in the spring. The Black-Footed Ferret Recovery Program would benefit from increased productivity in the captive population by manipulating photoperiod and temperature to create three artificial cycles in 1½ years. In the present study the photoperiod was set at 8 hr light:16 hr dark for […]
Reproductive inefficiency in male black-footed ferrets (Mustela nigripes)
Abstract 10.1002/1098-2361(2000)19:63.3.CO;2-M The black-footed ferret (Mustela nigripes), once considered extinct, has benefited from captive breeding and subsequent reintroduction into native habitat. A high proportion of females (>90%) exhibit estrus in captivity during the spring breeding season. However, many males considered to be prime-breeding age (1–3 years old) fail to sire offspring. Breeding records in 1995 […]