Abstract
Plasma levels of LH are generally higher in male than in female quail. This dimorphism was found to persist in quail which had been through a breeding cycle and then gonadectomized. Under long daylengths (12 h light : 12 h darkness (12L : 12D) or 16L : 8D) ovariectomized quail had plasma levels of LH that were 55-70% of those seen in castrated birds. The difference was reduced after transfer to short days (8L : 16D) when LH concentrations fell to basal levels, but again became more pronounced when the quail were restimulated with long photoperiods. Thus, the photoperiodic response system is sexually differentiated.
Original language | English (US) |
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Pages (from-to) | 279-282 |
Number of pages | 4 |
Journal | Journal of Endocrinology |
Volume | 92 |
Issue number | 2 |
DOIs | |
State | Published - 1982 |
Externally published | Yes |
ASJC Scopus subject areas
- Endocrinology, Diabetes and Metabolism
- Endocrinology