Vaginal estrus in unmated belding's ground squirrels
dc.contributor.author | Holmes, Warren G. | en_US |
dc.contributor.author | Landau, I. Theodore | en_US |
dc.date.accessioned | 2006-04-07T19:30:18Z | |
dc.date.available | 2006-04-07T19:30:18Z | |
dc.date.issued | 1986-06 | en_US |
dc.identifier.citation | Holmes, Warren G., Landau, I. Theodore (1986/06)."Vaginal estrus in unmated belding's ground squirrels." Hormones and Behavior 20(2): 243-248. <http://hdl.handle.net/2027.42/26150> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6WGC-4D5XDP9-2K/2/fd3c0f82b265a1258cbe80d8000d36cf | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/26150 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=3721416&dopt=citation | en_US |
dc.description.abstract | Belding's ground squirrels are seasonally breeding rodents that have a single annual mating season (ca. 3 weeks long) which begins shortly after their vernal emergence from a 7-month period of hibernation. In this study, changes in vaginal estrus were assessed among unmated captive females. Following a 7-month period in a coldroom, vaginal lavages were taken daily to monitor changes in estrous condition. Females were in vaginal estrus within 24-48 hr of removal from the coldroom. Rather than exhibiting repeated cycles, adults ([ges] 2 years old) remained in prolonged estrus (typically 3-4 weeks, but 8-10 weeks in some cases), whereas yearlings exhibited similar but shorter and possibly periodic changes in vaginal condition. The difference between the two age classes persisted in a second year of testing, indicating that the preadult status of yearlings (in the first year of testing) did not primarily account for the difference. In another experiment, removal from the coldroom was delayed for 24 days relative to adults removed at a time coincident with emergence from hibernation of free-living females. The "delayed" adults showed persistent vaginal estrus for a shorter total duration, such that both groups reached anestrus at approximately the same time. This implies that the latency to anestrus is not simply a fixed period from the time of removal from the coldroom. | en_US |
dc.format.extent | 364283 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Vaginal estrus in unmated belding's ground squirrels | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbsecondlevel | Internal Medicine and Specialties | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Psychology Department, University of Michigan, Ann Arbor 48109, U.S.A. | en_US |
dc.contributor.affiliationother | Psychology Department, Oakland University, Rochester, Michigan 48063, U.S.A. | en_US |
dc.identifier.pmid | 3721416 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/26150/1/0000227.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0018-506X(86)90022-X | en_US |
dc.identifier.source | Hormones and Behavior | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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