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Females increase offspring heterozygosity and fitness through extra-pair matings
It is shown that female blue tits, Parus caeruleus, increase the heterozygosity of their progeny through extra-pair matings, and the cost of inbreeding may be an important factor driving the evolution of female extra- Pair mating. Expand
Mate Choice and Genetic Quality: A Review of the Heterozygosity Theory
Publisher Summary This chapter presents a review of mate choice and genetic quality, defines mate choice, and discusses some of the key issues about how individuals can benefit from being choosy,Expand
Extrapair paternity in the blue tit (Parus caeruleus) : female choice, male charateristics, and offspring quality
Observed paternity in a blue tit population over 4 years provide support for the hypothesis that female blue tits engage in extrapair copuladons to obtain good genes for their offspring. Expand
Extra-pair paternity in birds: explaining variation between species and populations.
Factors such as breeding density, genetic variation in the population and the intensity of sexual conflicts determine the costs and benefits to males and females of engaging in extra-pair copulations, and therefore contribute to the variation among populations. Expand
Artificial Night Lighting Affects Dawn Song, Extra-Pair Siring Success, and Lay Date in Songbirds
The findings indicate that light pollution has substantial effects on the timing of reproductive behavior and on individual mating patterns, and may have important evolutionary consequences by changing the information embedded in previously reliable quality-indicator traits. Expand
Extra-pair paternity results from female preference for high-quality males in the blue tit
Evidence is presented that such an asymmetry is indeed caused by female behaviour, and that 'attractive' males do not suffer lost paternity, survive better and recruit more young, and the results support the genetic quality hypothesis. Expand
Contribution of genetics to the study of animal personalities: a review of case studies
Summary The need for evolutionary studies on quantitative traits that integrate genetics is increasing. Studies on consistent individual differences in behavioural traits provide a good opportunityExpand
Drd4 gene polymorphisms are associated with personality variation in a passerine bird
It is suggested that an association between Drd4 gene polymorphisms and animal personality variation predates the divergence of the avian and mammalian lineages and heralds the possibility of following microevolutionary changes in frequencies of behaviourally relevantDrd4 polymorphisms within populations where natural selection acts differentially on different personality types. Expand
Genetic variation and differentiation in captive and wild zebra finches (Taeniopygia guttata)
Genotyped 1000 zebra finches from 18 captive and two wild populations at 10 highly variable microsatellite loci and found patterns of genetic similarity closely match geographical relationships, so the most pronounced differences occur between the three continents: Australia, North America, and Europe. Expand
Paternity analysis reveals opposing selection pressures on crown coloration in the blue tit (Parus caeruleus)
It is shown that males with a more UV–shifted crown hue were less cuckolded, which probably resulted from female preference for more ornamented mates, and two alternative male mating tactics, where more UV-ornamented males maximize within–pair success and less UV–ornamente males maximize extra-pair success. Expand