Zoo Biology

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Assessing animal welfare: different philosophies, different scientific approaches
Zoo Biology - Tập 28 Số 6 - Trang 507-518 - 2009
David Fraser
AbstractAttempts to improve animal welfare have commonly centered around three broad objectives: (1) to ensure good physical health and functioning of animals, (2) to minimize unpleasant “affective states” (pain, fear, etc.) and to allow animals normal pleasures, and (3) to allow animals to develop and live in ways that are natural for the species. Each of these objectives has given rise to scient... hiện toàn bộ
Complete nutrient composition of commercially raised invertebrates used as food for insectivores
Zoo Biology - Tập 21 Số 3 - Trang 269-285 - 2002
Mark D. Finke
AbstractA variety of invertebrates are commonly fed to insectivorous animals by both zoos and hobbyists, but information as to the nutrient composition of most commercially raised species is limited. Adult house crickets, house cricket nymphs (Acheta domesticus), superworms (Zophobas morio larvae), giant mealworm larvae, mealworm larvae and adult mealworms (Tenebrio molitor), waxworm larvae (Galle... hiện toàn bộ
Urinary steroid evaluations to monitor ovarian function in exotic ungulates: II. Comparison between the giraffe (Giraffa camelopardalis) and the Okapi (Okapia johnstoni)
Zoo Biology - Tập 5 Số 4 - Trang 331-338 - 1986
N.M. Loskutoff, Leslie Walker, Janis E. Ott‐Joslin, Bonnie L. Raphael, Bill L. Lasley
AbstractOvarian activity in the female giraffe was evaluated during the nonfertile ovarian cycle and during the terminal stages of gestation. Progesterone metabolites, in the form of pregnanediol‐3‐glucuronide (PdG), were measured in daily random urine samples collected from four adult parous giraffes. The follicular phase averaged 4.0 ± 0.1 days in length (N = 12; range 3–5 days) and peak PdG lev... hiện toàn bộ
Behavioral indices of estrus in a group of captive African elephants (Loxodonta africana)
Zoo Biology - Tập 24 Số 4 - Trang 311-329 - 2005
Alessia Ortolani, Kirsten M. Leong, Laura H. Graham, Anne Savage
Hormonal induction of spermiation, courting behavior and spawning in the southern bell frog, Litoria raniformis
Zoo Biology - Tập 29 Số 6 - Trang 774-782 - 2010
Reinier M. Mann, Ross V. Hyne, Catherine B. Choung
AbstractWe trialled the efficacy of various exogenous hormones to induce spermiation, courtship behavior, and spawning in the “endangered” southern bell frog, Litoria raniformis. Intralymphatic administration of Lucrin®, a synthetic nonapeptide luteinizing hormone releasing hormone (LHRH), was used successfully to induce courting behaviors and ejaculation of spermatozoa in males. Various hormones,... hiện toàn bộ
Urinary monitoring of adrenal responses to psychological stressors in domestic and nondomestic felids
Zoo Biology - Tập 11 Số 3 - Trang 165-176 - 1992
Kathy Carlstead, Janine L. Brown, Steven L. Monfort, Richard Killens, David E. Wildt
AbstractThe potential of assessing adrenal responses to psychological stressors through the radioimmunoassay of free cortisol in urine was examined in the domestic cat (Felis catus) and in three nondomestic felid species (Felis geoffroyi, Felis bengalensis, and Felis concolor). To determine the approximate clearance rate of an acute increase in glucocorticoid secretion, serial plasma and bladder u... hiện toàn bộ
Reproductive steroid hormones and ovarian activity in felids of the Leopardus genus
Zoo Biology - Tập 20 Số 2 - Trang 103-116 - 2001
Nei Moreira, Emygdio L. A. Monteiro‐Filho, Rosana Nogueira de Morais, William F. Swanson, Laura H. Graham, O.L. Pasquali, Mariana Gomes, David E. Wildt, Janine L. Brown
AbstractReproductive endocrine patterns were characterized in female ocelots (Leopardus pardalis; n = 3), tigrinas (Leopardus tigrinus; n = 2), and margays (Leopardus wiedii; n = 2) housed in captivity in southern Brazil. Females were maintained as singletons and exposed to natural fluctuations in photoperiod. Cyclic changes in ovarian steroids were monitored by analyzing estrogen and progestogen ... hiện toàn bộ
Reproductive status of endemic felid species in Latin American zoos and implications for ex situ conservation
Zoo Biology - Tập 22 Số 5 - Trang 421-441 - 2003
William F. Swanson, Warren E. Johnson, Richard C. Cambre, Scott B. Citino, K.B. Quigley, Dulce María Brousset, Rosana Nogueira de Morais, Nei Moreira, Stephen J. O’Brien, David E. Wildt
AbstractReproductive evaluations were conducted on 185 male cats representing eight endemic Latin American species that were maintained in 44 zoos and private facilities in 12 Latin American countries. Reproductive assessments (testicular measures, ejaculate quality, and blood testosterone/cortisol concentration) were used to establish normative values for large‐ and small‐sized cats in Latin Amer... hiện toàn bộ
Reproductive endocrine responses to photoperiod and exogenous gonadotropins in the pallas' cat (Otocolobus manul)
Zoo Biology - Tập 21 Số 4 - Trang 347-364 - 2002
Janine L. Brown, Laura H. Graham, Julie M. Wu, Darin Collins, William F. Swanson
AbstractFecal samples were collected for 14–26 months from three male and six female Pallas' cats (Otocolobus manul) to examine gonadal steroidogenic activity in response to changes in photoperiod and treatment with exogenous gonadotropins. Females exhibited a seasonal anestrus from May–December, excreting consistently low concentrations of fecal estrogens (overall mean, 50.2±8.5 ng/g). During the... hiện toàn bộ
Local adaptation, coadaptation, and population boundaries
Zoo Biology - Tập 5 Số 2 - Trang 115-125 - 1986
Alan R. Templeton, Helmut Hemmer, Georgina M. Mace, Ulysses S. Seal, William M. Shields, David S. Woodruff
AbstractCoadaptation can occur either because of local adaptation in a geographically widespread population and/or because of intrinsic adaptation to the state of other genes or chomosomes. In either event, hybridization between animals with differently coadapted gene or chromosomal complexes can result in a decrease in fertility, viability, etc. in the initial hybrids and especially in later gene... hiện toàn bộ
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