Article (Scientific journals)
Personality and gonadal development as sources of individual variation in response to GnRH challenge in female great tits
Caro, Samuel; Cornil, Charlotte; van Oers, Kees et al.
2019In Proceedings of the Royal Society of London. Series B, Biological Sciences, 286 (1902), p. 20190142
Peer Reviewed verified by ORBi
 

Files


Full Text
Caro2019-proofs.pdf
Publisher postprint (465.97 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
seasonal timing; reproduction; endocrinology; personality; birds
Abstract :
[en] Seasonal timing of reproduction is a key life-history trait, but we know little about the mechanisms underlying individual variation in female endocrine profiles associated with reproduction. In birds, 17b-oestradiol is a key repro- ductive hormone that links brain neuroendocrine mechanisms, involved in information processing and decision-making, to downstream mechanisms in the liver, where egg-yolk is produced. Here, we test, using a simulated induction of the reproductive system through a GnRH challenge, whether the ovary of pre-breeding female great tits responds to a brain stimulation by increasing oestradiol. We also assess how this response is modified by individual-specific traits like age, ovarian follicle size and personality, using females from lines artificially selected for divergent levels of explora- tory behaviour. We show that a GnRH injection leads to a rapid increase in circulating concentrations of oestradiol, but responses varied among individ- uals. Females with more developed ovarian follicles showed stronger responses and females from lines selected for fast exploratory behaviour showed stronger increases compared to females from the slow line, indicat- ing a heritable component. This study shows that the response of the ovary to a reproductive stimulation from the brain greatly varies among individ- uals and that this variation can be attributed to several commonly measured individual traits, which sheds light on the mechanisms shaping heritable endocrine phenotypes.
Research Center/Unit :
Giga-Neurosciences - ULiège
Disciplines :
Neurosciences & behavior
Author, co-author :
Caro, Samuel
Cornil, Charlotte  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie de la différenciation sexuelle du cerveau
van Oers, Kees
Visser, Marcel
Language :
English
Title :
Personality and gonadal development as sources of individual variation in response to GnRH challenge in female great tits
Publication date :
2019
Journal title :
Proceedings of the Royal Society of London. Series B, Biological Sciences
ISSN :
0080-4649
Publisher :
Royal Society
Volume :
286
Issue :
1902
Pages :
20190142
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Centre National de la recherche scientifique = French National Centre for Scientific Research - CNRS
Fédération Wallonie Bruxelles. Fonds de la Recherche Scientifique - F.R.S.-FNRS
Available on ORBi :
since 23 April 2019

Statistics


Number of views
59 (3 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
10
Scopus citations®
without self-citations
5
OpenCitations
 
3

Bibliography


Similar publications



Contact ORBi