ectoparasites of sharp-tailed grouse, pediocetes species of ectoparasites were recovered during a survey of sharp-tailed grouse, pediocetes phasianellus, including the ticks, haemaphysalis chordeilis and h. leporispalustris; the lice, goniodes nebraskensis, lagopoecus gibsoni and amyrsidea sp.; the hippoboscid fly, ornithomyia anchineuria; and the mite, ornithonyssus sylviarum. seasonal changes in populations of ticks and lice were found but not for populations of the hippoboscids or mites. all stages of h. chordeilis were found on sharp ...19817241708
active formation of mixed-species grouse leks: a role for predation in lek evolution?behavioural ecologists have interpreted avian leks as products of sexual selection, in which males display socially to increase their opportunities to mate. however, without invoking reproductive queuing or kin selection, this paradigm does not necessarily explain why many males that fail to mate participate in leks. an alternative solution, that males also aggregate to reduce predation, has previously lacked compelling support. we show that mixed-species leks, comprising two congeneric grouse, ...200212573063
complete nucleotide sequence of the coturnix chinensis (blue-breasted quail) mitochondrial genome and a phylogenetic analysis with related species.coturnix chinensis (blue-breasted quail) has been classically grouped in galliformes phasianidae coturnix, based on morphologic features and biochemical evidence. since the blue-breasted quail has the smallest body size among the species of galliformes, in addition to a short generation time and an excellent reproductive performance, it is a possible model fowl for breeding and physiological studies of the coturnix japonica (japanese quail) and gallus gallus domesticus (chicken), which are class ...200212642645
organochlorines and trace elements in upland game birds harvested in canada.american woodcock, common snipe, two species of ptarmigan (willow and rock), and three species of grouse (ruffed, spruce, and sharp-tailed) were collected from 21 locations between 1991 and 1994 as part of a nationwide survey of contaminants in game birds harvested in canada. breast muscle was analysed for organochlorines (chlorobenzenes, hexachlorocyclohexanes, chlordane-related compounds, ddt metabolites, mirex, dieldrin, and pcbs) and trace elements (hg, cd, se, and as). the concentrations of ...200616055172
recent range expansion and divergence among north american prairie grouse.prairie grouse (genus: tympanuchus) once existed throughout much of north america but have recently experienced significant population declines, isolation, and extinction. in previous molecular studies, contrasting patterns or an unresolved polytomy among tympanuchus taxa (tympanuchus phasianellus, tympanuchus pallidicinctus, and tympanuchus cupido) have resulted from traditional phylogenetic methods. as an alternative approach, the timing of expansion and the demographic processes that may have ...200818283050
the use of digital photos to assess visual cover for wildlife in rangelands.grassland vegetation can provide visual cover for terrestrial vertebrates. the most commonly used method to assess visual cover is the robel pole. we test the use of digital photography as a more accurate and repeatable method. we assessed the digital photography method on four forage grassland species (pseudoroegneria spicata, festuca campestris, poa pratensis, achnatherum richardsonii). digital photos of 2-dimensional cutout silhouettes of three bird species sharp-tailed grouse, western meadow ...201020226585
sharp-tailed grouse nest survival and nest predator habitat use in north dakota's bakken oil field.recent advancements in extraction technologies have resulted in rapid increases of gas and oil development across the united states and specifically in western north dakota. this expansion of energy development has unknown influences on local wildlife populations and the ecological interactions within and among species. our objectives for this study were to evaluate nest success and nest predator dynamics of sharp-tailed grouse (tympanuchus phasianellus) in two study sites that represented areas ...201728081245
recency, range expansion, and unsorted lineages: implications for interpreting neutral genetic variation in the sharp-tailed grouse (tympanuchus phasianellus).both current and historical patterns of variation are relevant to understanding and managing ecological diversity. recently derived species present a challenge to the reconstruction of historical patterns because neutral molecular data for these taxa are more likely to exhibit effects of recent and ongoing demographic processes. we studied geographical patterns of neutral molecular variation in a species thought to be of relatively recent origin, tympanuchus phasianellus (sharp-tailed grouse), u ...200616842408
vegetation composition, dynamics, and management of a bracken-grassland and northern-dry forest ecosystem.we investigated differences in vegetation composition and dynamics for two globally rare ecosystems, bracken-grasslands and northern-dry forests of northern wisconsin. these ecosystems commonly have been viewed as degraded pine barrens. bracken-grasslands contained a high dominance of exotic species, low native richness, and no obvious prairie species, suggesting logging-era anthropogenic origins. differences in cover for common plants among ecosystems were examined using mann-whitney u tests of ...200314565700
non-random mating in classical lekking grouse species: seasonal and diurnal trends.this paper is the first to integrate both field and theoretical approaches to demonstrate that fertility benefits can be a direct benefit to females mating on the classical lek. field data collected for male sharp-tailed grouse (tympanuchus phasianellus), a classical lekking species, revealed potential fertility benefits for selective females. adult males and individuals occupying centrally located territories on the lek were found to have significantly larger testes than juveniles and periphera ...200011049002
a chi-square goodness-of-fit analysis of dependent resource selection data.the chi2 goodness-of-fit test is commonly used for testing if animals use resources in proportion to availability. this method assumes independence of resource selection among animals. in reality, this assumption is violated if animals display antisocial or gregarious behavior. data from a study of sharp-tailed grouse in eastern washington suggested some dependency among observations. realizing that this dependency can have a great influence on inference for resource selection data, we develop a ...200010877296
sexual selection for increased male courtship and acoustic signals and against large male size at sharp-tailed grouse leks. 199328568713
Displaying items 1 - 12 of 12