Capercaillie (Tetrao urogallus) Science Article 5 abstract Ecology of capercaillie (Tetrao urogallus) was studied in the mountains of Central Slovakia (West Carpathians) in 1981-2003. In the studied area, the capercaillie population inhabited especially old natural forests (100-250 years old) in the spruce-beech-fir (850-1,270 m a.s.l.) and spruce (1,250-1,530 m a.s.l.) vegetation zones. The overstorey stand […]
Category: Galliformes
Lack of genetic structuring and subspecies differentiation in the Capercaillie, Tetrao urogallus, in Finland
Capercaillie (Tetrao urogallus) Science Article 6 abstract We sequenced and analysed variation in a 430 bp segment of the mitochondrial DNA control region of 302 Finnish capercaillies Tetrao urogallus. The data were divided into four zones representing the three suggested subspecies (T. u. urogallus, T. u. uralensis/karelicus, T. u. major), and the zone for hybrids […]
Minimum viable population size of capercaillie Tetrao urogallus: results from a stochastic model
Capercaillie (Tetrao urogallus) Science Article 1 abstract In order to estimate minimum area requirements for viable isolated populations of capercaillie Tetrao urogallus in Central Europe, we developed a stochastic population model. Model parameters were largely based on the results of a field study in the Bavarian Alps. Environmental fluctuations (amount of rainfall in June and […]
Social interactions among Capercaillie Tetrao urogallus males outside the lek during spring
Capercaillie (Tetrao urogallus) Science Article 12 abstract Capercaillies have a lek-likemating system,with partly overlappingmale daytime ranges extending radially out fromsmaller display territories at the lek.With VHF telemetry, we studied the spatial interactions among neighbouring adult males (n = 10) of different social status in their overlap zones outside the lek. In addition, we recorded responses […]
Do disturbances in surrounding areas affect a core population of Cantabrian Capercaillie Tetrao urogallus cantabricus? The case of the Natural Reserve of Muniellos (Asturias, NW Spain)
Capercaillie (Tetrao urogallus) Science Article 9 abstract Aims: The Cantabrian Capercaillie is an endemic subspecies which is declining over much of its range in the Cantabrian Mountains. The main aim of this paper is to test whether human disturbances in areas surrounding mature woodland patches affect more than habitat structure and composition a core population […]
Kin groups in closely spaced capercaillie leks
Capercaillie (Tetrao urogallus) Science Article 10 abstract We quantified the genetic structure among 58 capercaillie (Tetrao urogallus) from three closely spaced leks in boreal Russia using ten microsatellite loci. We did not find significant structuring with respect to lek membership in an overall analysis. However, all but one individual could be strongly assigned to one […]
Inbreeding depression and male . tness in black grouse
Black Grouse (Tetrao tetrix) Science Article 1 abstract The male lifetime lekking performance was studied, and related to inbreeding
Color Signals in the Black Grouse (Tetrao tetrix): SignalProperties and Their Condition Dependency
Black Grouse (Tetrao tetrix) Science Article 7 abstract Recent progress in techniques of quantifying betweenindividualdifferences of color-based ornaments has revealed undiscoveredpossibilities for research in sexual selection. We present howthe color spectra data can be comprehensively used for studying theimportance of sexual ornaments in the black grouse and how theseornaments are related to a male condition. […]
Correlates of male mating success on black grouse (Tetrao tetrix L.)
Black Grouse (Tetrao tetrix) Science Article 2 abstract Sexual selection in black grouse was studied through multivariate analyses of possible correlates of mating success using data from an eight year study of 10 different leks. Body size was weakly correlated with mating status (0 or >= 1 mating) and tail length was significantly correlated with […]
Combs and sexual selectionin black grouse (Tetrao tetrix).
Black Grouse (Tetrao tetrix) Science Article 6 abstract We studied supra-orbital combs in lekking black grouse (Tetrao tetrix) in relation to sexual selection at five leks in Finland 1991-1998 and four leks in Sweden 1992-1995. Comb size was estimated in two ways: by observing its natural size in the field at different behaviors (‘observed comb […]