Ascription of resemblance of newborns by parents and nonrelatives
The assessment game in sand fiddler crab contests for breeding burrows
Abstract The single enlarged claw of male sand fiddler crabs, Uca pugilator , is used in contests for control of breeding burrows. The larger of the two contestants has the larger claw and usually…
Population density and the intensity of sexual selection on body length in spatially or temporally restricted natural populations of a seed bug
- D. McLain
- BiologyBehavioral Ecology and Sociobiology
- 1 May 1992
Strong sexual selection appears to impose a significant genetic load in natural populations of the seed bug, Neacoryphus bicrucis Say, suggesting that natural selection acting on other components of fitness favors smaller size or that the direction of sexual selection on size fluctuates between generations in response to the between-year variation in population density.
Investigation of the validity of species status of Ixodes dammini (Acari: Ixodidae) using rDNA.
- D. Wesson, D. McLain, J. Oliver, J. Piesman, F. Collins
- BiologyProceedings of the National Academy of Sciences…
- 1 November 1993
Based on maximum parsimony and two distance methods, sequence variation in ITS1 and ITS2 suggests that I. scapularis and I. dammini are not distinct species and that even individuals from geographically isolated locations are very similar.
Prolonged copulation as a post-insemination guarding tactic in a natural population of the ragwort seed bug
- D. McLain
- BiologyAnimal Behaviour
- 1 October 1989
Conspecificity of the ticks Ixodes scapularis and I. dammini (Acari: Ixodidae).
Data and results of the work of other authors on tick host preferences and vector competence indicate that I. dammini is not a valid species separate from I. scapularis.
Variation in ribosomal DNA internal transcribed spacers 1 among eastern populations of Ixodes scapularis (Acari: Ixodidae).
Data indicate that I. scapularis constitutes a single species, and the pattern of variation is consistent with restricted gene flow between regions or, alternatively, with recent introgression between northern and southern types in the middle-eastern part of the species's range.
Sexual selection and the risk of extinction of introduced birds on oceanic islands
The hypothesis that response to sexual selection increases the risk of extinction is supported for passerids and for the data set as a whole, and the probability of extinction was correlated with the number of species already introduced.
Female Choice and the Adaptive Significance of Prolonged Copulation in Nezara Viridula (Hemiptera: Pentatomidae)
- D. McLain
Extended copulation in the southern green stink bug, Nezara viridula L., is analyzed in terms of its value in sperm competition and non-reproductive functions and laboratory and field data suggest that female N.viridula and parasitoids are more frequently attracted to large males.
Sexual selection and extinction: The fate of plumage-dimorphic and plumage-monomorphic birds introduced onto islands
In a two-way analysis, plumage and diet had signiWcant eVects on the introduction success rate and species nesting primarily in bushes had higher success rates than those nesting on the ground or in trees.