English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/51537
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Non Cat-Like Ovarian Cycle in the Eurasian and the Iberian Lynx – Ultrasonographical and Endocrinological Analysis

AuthorsGoritz, F.; Dehnhard, M.; Hildebrandt, T.B.; Naidenko, SV; Vargas, Astrid; Martínez, Fernando ; López-Bao, José V. ; Palomares, Francisco ; Jewgenow, K.
Issue Date2009
PublisherBlackwell Publishing
CitationReproduction in Domestic Animals, 44 (Suppl. 2), 87–91 (2009);
AbstractThe Iberian lynx is considered the most endangered felid species. Therefore, an ex situ conservation program was initiated to protect this species from extinction. Additional knowledge on lynx reproduction biology and reliable methods for reproductive monitoring are important for developing a captive breeding program. The aim of this study in lynx was to implement transrectal ultrasonography to visualize ovarian structures (follicles, corpora lutea) and to assess ovarian activity in addition to analysis of serum progesterone and oestradiol. Because of limited access to Iberian lynxes, the less-endangered Eurasian lynx and bobcat were also studied in this comparative study. Recent endocrinological studies based on faecal and urinary progesterone and oestrogen metabolites revealed that steroid profiles in both these species were alike and did not follow the typical pattern of other felids. Pregnancy diagnosis was not possible, since progesterone concentrations did not differ between pregnant and pseudopregnant animals. Progesterone was also detected after parturition as well as after weaning until the onset of a new oestrous cycle. In the present study, the presence of corpora lutea during the non-breeding season was confirmed by ultrasonography and by elevated serum levels of progesterone averaging 3.56 ± 1.3 ng/ml in Eurasian and 6.1 ± 0.26 ng/ml in Iberian lynx, respectively. The ultrasonographical findings on the ovarian structures suggest strongly that corpora lutea developed after ovulation stay active until November and regress before the onset of the next oestrus.
Publisher version (URL)http://dx.doi.org/10.1111/j.1439-0531.2009.01380.x
URIhttp://hdl.handle.net/10261/51537
DOI10.1111/j.1439-0531.2009.01380.x
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
goritz et al _reprod dom anim 09.doc552,5 kBMicrosoft WordView/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.