Sexual Selection for Aesthetic Traits in Species with Biparental Care

摘要: Two timely evolutionary issues concern the potential for sexual selection in mating systems characterized by substantial parental investment both sexes and occurrence significance of mate preferences aesthetic characteristics. Here F explore these at their interface. First, I hypothesize two processes that may generate differential reproductive success (RS) resulting from possession traits species with (PI) sexes. The differential-access hypothesis posits attractive individuals have preferential access to high-quality mates. differential-allocation states mates are "willing" contribute greater than average PI obtain and/or maintain Second, report on experiments investigate impact fitness (long-term RS). test organism is zebra finch (Poephila glittata), a sexually dimorphic, typically monogamous estrildid. plastic leg bands various colors. Previous research has shown finches prefer oppositesex adults wearing certain colors (attractive traits) avoid those other (unattractive traits).