HOME HELP CONTACT US SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Schumacher, M. Articles by Balthazart, J. Search for Related Content PubMed PubMed Citation Articles by Schumacher, M. Articles by Balthazart, J.

Serum concentrations of testosterone, 5-dihydrotestosterone, oestradiol and progesterone were measured by radioimmunoassay combined with Celite chromatography in male and female Japanese quail (Coturnix coturnix japonica) during the second half of embryonic life (days 9–17 of incubation) and during the first 5 weeks after hatching. The mean level of each of the four steroids was significantly affected by the age of the birds. An overall effect of sex was detected by analysis of variance only on oestradiol concentrations, with females having higher serum concentrations than males during most of the age range studied. Significant peaks of testosterone and progesterone were also detected around hatching time. These results are consistent with the view that oestradiol is the major hormone implicated in the sexual differentiation of reproductive behaviour in the quail. The relationships between the circulating concentrations of oestradiol during ontogeny and the critical period of differentiation as postulated by currently accepted models is also discussed.

J. Endocr. (1988) 118, 127–134

This article has been cited by other articles:

				A. Mattsson, J. A Olsson, and B. Brunstrom Selective estrogen receptor {alpha} activation disrupts sex organ differentiation and induces expression of vitellogenin II and very low-density apolipoprotein II in Japanese quail embryos Reproduction, August 1, 2008; 136(2): 175 - 186. [Abstract] [Full Text] [PDF]

				K. W. Wilhelms, S. A. Cutler, J. A. Proudman, L. L. Anderson, and C. G. Scanes Atrazine and the Hypothalamo-Pituitary-Gonadal Axis in Sexually Maturing Precocial Birds: Studies in Male Japanese Quail Toxicol. Sci., July 1, 2005; 86(1): 152 - 160. [Abstract] [Full Text] [PDF]