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Risks and Rewards of Nest Defence by Parent Birds
A comprehensive functional theory of nest defence based on life-history theory can help to elucidate many of the patterns observed in this important aspect of the parental care behavior of a wide variety of animals. Expand
Genetic structure of populations of the threatened eastern massasauga rattlesnake, Sistrurus c. catenatus: evidence from microsatellite DNA markers
Six microsatellite DNA loci are used to generate information on the degree of genetic differentiation between, and the levels of inbreeding within, populations of the threatened eastern massasauga rattlesnake to understand how evolutionary processes operate in these populations and aid the development of conservation plans for this species. Expand
Realized Reproductive Success of Polygynous Red-Winged Blackbirds Revealed by DNA Markers
Genetically based measures of reproductive success show that individual males realize more than 20% of their overall success from extra-pair fertilizations, on average, and that this form of mating behavior confounds traditional measures of male success. Expand
Pair and extra-pair mating success relative to male quality in red-winged blackbirds
It is proposed that the direct advantage realized by older males in extra-pair matings might indicate that experience is important, such that experienced males are better at creating or exploiting the opportunities for extra- Pair mating. Expand
American robin nestlings compete by jockeying for position
It is concluded that jockeying for position by Nestling American robins can influence the pattern of food allocation by parents, and that hungry nestlings can improve their competitive standing against nestmates by moving to positions where parents are more likely to feed them. Expand
Offspring Quality and the Polygyny Threshold: "The Sexy Son Hypothesis"
An expansion of the Orians-Verner model for the evolution of polygyny has been made to explain evidence contradictory to that model. By separating the individual quality of the male from the qualityExpand
Extra–pair mating, male plumage coloration and sexual selection in yellow warblers (Dendroica petechia)
This study confirms that extra–pair mating can be an important mechanism of sexual selection even when the most successful sires are commonly cuckolded, and refutes a previous hypothesis that the variation in plumage and behaviour among male yellow warblers is an example of alternative, equally successful, evolutionarily stable strategies. Expand
Female distribution affects mate searching and sexual selection in male northern water snakes (Nerodia sipedon)
Overall, the distribution of females had a pronounced effect on male behavior, on the factors that affected male success in locating females, and probably on the extent of sperm competition once females had been located. Expand
Directional gene flow patterns in disjunct populations of the black ratsnake (Pantheropis obsoletus) and the Blanding’s turtle (Emydoidea blandingii)
The estimation and maintenance of connectivity among local populations is an important conservation goal for many species at risk. We used Bayesian statistics and coalescent theory to estimate short-Expand
Caterpillar talk: Acoustically mediated territoriality in larval Lepidoptera
Comparative evidence indicates that larval acoustic signaling may be widespread throughout the Lepidoptera, meriting consideration as a principal mode of communication for this important group of insects. Expand