Show simple item record

dc.contributor.authorPainer, Johanna
dc.contributor.authorJewgenow, Katarina
dc.contributor.authorDenhard, Martin
dc.contributor.authorArnemo, Jon Martin
dc.contributor.authorLinnell, John D.C.
dc.contributor.authorOdden, John
dc.contributor.authorHildebrandt, Thomas B.
dc.contributor.authorGoeritz, Frank
dc.identifier.citationPainer J, Jewgenow K, Dehnhard M, Arnemo JM, Linnell JDC, et al. (2014) Physiologically Persistent Corpora lutea in Eurasian Lynx (Lynx lynx) – Longitudinal Ultrasound and Endocrine Examinations Intra-Vitam. PLoS ONE 9(3): e90469. doi:10.1371/journal.pone.0090469nb_NO
dc.description.abstractFelids generally follow a poly-estrous reproductive strategy. Eurasian lynx (Lynx lynx) display a different pattern of reproductive cyclicity where physiologically persistent corpora lutea (CLs) induce a mono-estrous condition which results in highly seasonal reproduction. The present study was based around a sono-morphological and endocrine study of captive Eurasian lynx, and a control-study on free-ranging lynx. We verified that CLs persist after pregnancy and pseudo-pregnancy for at least a two-year period. We could show that lynx are able to enter estrus in the following year, while CLs from the previous years persisted in structure and only temporarily reduced their function for the period of estrus onset or birth, which is unique among felids. The almost constant luteal progesterone secretion (average of 5 ng/ml serum) seems to prevent folliculogenesis outside the breeding season and has converted a poly-estrous general felid cycle into a monoestrous cycle specific for lynx. The hormonal regulation mechanism which causes lynx to have the longest CL lifespan amongst mammals remains unclear. The described non-felid like ovarian physiology appears to be a remarkably non-plastic system. The lynx’s reproductive ability to adapt to environmental and anthropogenic changes needs further investigationnb_NO
dc.publisherPLOS Onenb_NO
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Norway*
dc.subjectEurasian lynxnb_NO
dc.subjectLynx lynxnb_NO
dc.subjectreproductive abilitynb_NO
dc.subjectenvironmental changenb_NO
dc.subjectanthropogenic changenb_NO
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480nb_NO
dc.titlePhysiologically Persistent Corpora lutea in Eurasian Lynx (Lynx lynx) – Longitudinal Ultrasound and Endocrine Examinations Intra-Vitamnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalPLOS Onenb_NO

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Norway
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Norway