Fecal progesterone and estradiol changes during the breeding season in captive female wolf

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Date: Sept. 2010
From: Journal of Forestry Research(Vol. 21, Issue 3)
Publisher: Springer
Document Type: Article
Length: 269 words

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Abstract :

Byline: Wei-lai Sha (1,2,3), Hong-hai Zhang (3), Lei Chen (3,4) Keywords: Canis lupus; estradiol; estrus; fecal steroid; pregnancy; progesterone Abstract: Understanding basic reproductive physiology is crucial for the management of both captive and free-ranging wolf. In the present study, we determined hormonal changes during pregnancy and the estrous cycle in captive female wolf by measuring fecal steroids collected during the breeding season with high performance liquid chromatography (HPLC). These biochemical analyses were validated using chemical devivatization and mass spectrometry, and interpreted along with the behavioral data. All four females undergoing estrus cycles were copulated with their partners and delivered pups successfully. We found that estradiol concentrations were significantly higher during the estrus cycle than other stages (p Author Affiliation: (1) Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai, 810001, China (2) Graduate University of the Chinese Academy of Sciences, Beijing, 100049, China (3) College of Life Science, Qufu Normal University, Qufu, Shandong, 273165, China (4) Northeast Forestry University, Harbin, 150040, China Article History: Registration Date: 14/08/2010 Received Date: 19/10/2009 Accepted Date: 27/12/2009 Online Date: 18/08/2010 Article note: Foundation project: This research was supported by Program for New Century Excellent Talents (NCET-07-0507), Shandong Province Natural Science Foundation (Z2008D01), Project of Science and Technology Development Plan in Shandong Province (2007GG2009011), Shandong Province Science Fund for Distinguished Young Scholars (2005BS02005, 2008BS09011). The online version is available at http://www.springerlink.com

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Gale Document Number: GALE|A234793046