Display activity and seasonality of faecal sexual steroids in male @entity34409 ( XXXX L.).

@entity251 @entity101 @entity1420 @entity2494 @entity53 @entity134 @entity342 @entity34409 @entity393 @entity3800
The non-invasive faecal sampling and RIA was used to measure faecal equivalents of @entity251 (T), @entity2494 ( @entity2494 ), @entity53 -17beta (E2) and @entity1420 (P4) in juvenile and adult @entity34409 males. Possible connections of diurnal and seasonal changes of sexual @entity134 levels and display activity were studied. Correlations were found between sexual @entity134 equivalent levels of faeces and display activity and agonistic behaviour in the different phases of annual cycle of adult males. In early display period increasing levels of @entity3800 were measured, during main display period very high @entity342 dominance was observable against E2 and P4. During postnuptial moult strong T decrease and @entity2494 and P4 increase were detected. Elevation of E2 was measured during wintering. In juveniles level of @entity2494 was higher than level of T suggesting its importance in immature males. @entity393 was detected between reproductive period and postnuptial moult and @entity2494 between reproduction and wintering, accompanying with E2 elevation. The inhibiting effect of inclement weather on gonad functions also was detected in our study. We suppose that the unexpected cold weather with strong wind depressed the levels of @entity3800 both in juveniles and adults and the @entity101 was also detected.
