Document Detail


Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis).
MedLine Citation:
PMID:  20850438     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Canada lynx face some unique breeding restrictions, which may have implications for population viability and captive management. The goal of this study was to improve our understanding of basic reproductive physiology in Canada lynx. Using fecal hormone metabolite analysis, we established normative patterns of fecal estrogen (fE) and progestagen (fP) expression in captive and wild female Canada lynx. Our results indicate that Canada lynx have persistent corpora lutea, which underlie their uncharacteristic fP profiles compared to other felids. Thus, fP are not useful for diagnosing pregnancy in Canada lynx. We also found that Canada lynx are capable of ovulating spontaneously. Captive females had higher concentrations of fE and fP than wild females. Both populations exhibit a seasonal increase in ovarian activity (as measured by fE) between February and April. Finally, there was evidence of ovarian suppression when females were housed together.
Authors:
Kerry V Fanson; Nadja C Wielebnowski; Tanya M Shenk; Jennifer H Vashon; John R Squires; Jeffrey R Lucas
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-17
Journal Detail:
Title:  General and comparative endocrinology     Volume:  169     ISSN:  1095-6840     ISO Abbreviation:  Gen. Comp. Endocrinol.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-11-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370735     Medline TA:  Gen Comp Endocrinol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  217-24     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Affiliation:
Department of Brain, Behaviour, and Evolution, Macquarie University, 209 Culloden Road, Marsfield, NSW 2122, Australia. kerryfanson@gmail.com
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