Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Randy Rieches"'
Publikováno v:
Journal of Mammalogy. 90:40-46
Reproductive effort should negatively correlate with reproductive value, yielding a pattern of increased effort with age. According to the terminal investment hypothesis, females near the end of their reproductive life span should devote more resourc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5bbdd7e09d24c04337f611090b2bbc5
https://doi.org/10.1644/08-mamm-a-124.1
https://doi.org/10.1644/08-mamm-a-124.1
Publikováno v:
Zoo Biology. 25:383-390
We analyzed 35 years of data from a captive breeding program of cheetahs to determine basic reproductive life history characteristics of females. Breeding females ranged in age from 2.7–10.5 years. Sixteen females and over 13 males produced 129 cub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab1b466ea79636492fe27d8c1ec218f4
https://doi.org/10.1002/zoo.20097
https://doi.org/10.1002/zoo.20097
Publikováno v:
Journal of Mammalogy. 85:428-431
Sex-biased maternal investment involves differential allocation of resources to production and rearing of sons or daughters as a function of their anticipated reproductive output. We examined reproductive investment among captive giraffes (Giraffa ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7aa8c4197096180a2a32e31f70b48f7b
https://doi.org/10.1644/1545-1542(2004)085<0428:miicg>2.0.co
https://doi.org/10.1644/1545-1542(2004)085<0428:miicg>2.0.co
Autor:
Marilyn L. Patton, J. Kennedy, Valentine A. Lance, Ronald R. Swaisgood, G.A. Fetter, Angela M. White, Mark S. Edwards, Randy Rieches, R.L. Sproul
Publikováno v:
Zoo Biology. 20:375-388
Aggression control is becoming an important component in the management of animals in captivity, but rigorous quantification of aggressive behavior has heretofore been lacking. This study was done to assess the ability of melengestrol acetate (MGA) g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbf7fc5861d36fa1bcbb623f1be08594
https://doi.org/10.1002/zoo.1036
https://doi.org/10.1002/zoo.1036
Autor:
Randy Rieches, Marilyn L. Patton, Ronald R. Swaisgood, J.P. Montagne, Angela M. White, G.A. Fetter, Valentine A. Lance, Nancy M. Czekala
Publikováno v:
Zoo Biology. 18:111-127
Pregnancy and the reproductive cycle were monitored in 13 captive southern white rhinoceros (Ceratotherium simum simum) by measuring progesterone metabolites in fecal extracts and by observing behavior patterns. Fecal hormones were measured using a m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81fda74c38da374c4024d9d12b35b6cc
https://doi.org/10.1002/(sici)1098-2361(1999)18:2<111::aid-zoo3>3.0.co
https://doi.org/10.1002/(sici)1098-2361(1999)18:2<111::aid-zoo3>3.0.co
Publikováno v:
Journal of Zoo and Wildlife Medicine. 31:228-230
Thirteen Chinese goral (Nemorhaedus goral arnouxianus) (five males and eight females) were each given 0.8 mg of melengestrol acetate orally in pelleted food for 224 days. The previous breeding season, six of the eight females calved (two were immatur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b270c272eb7feed181de7d28b718511
https://doi.org/10.1638/1042-7260(2000)031[0228:sciaho]2.0.co
https://doi.org/10.1638/1042-7260(2000)031[0228:sciaho]2.0.co
Autor:
Fred B. Bercovitch, Nadine Lamberski, Wolfgang Jöchle, Marilyn L. Patton, Susan M. del Castillo, Meredith J. Bashaw, Randy Rieches
Publikováno v:
Theriogenology. 66(2)
Zoological institutions provide an environment conducive to studying proximate mechanisms influencing reproduction that can provide guidance to both field and captive settings seeking to manage their stock. Both national parks and zoos have space lim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41fb6247c620dab94b9a6fc0ff0f366
https://pubmed.ncbi.nlm.nih.gov/16423382
https://pubmed.ncbi.nlm.nih.gov/16423382