Primate mating systems and the evolution of neocortex size. While male ornamentation has evolved in some monogamous species, it is more highly developed in species with polygynous breeding systems, and especially. Sexual dimorphism was relatively greater in species with polygynous or lekking than monogamous mating systems. However, among diurnal primates the derived mating states evolved at the same time as the derived states of social organization. Primate mating systems and the evolution of immune response. Females do more than males especially in primates since they do gestation and lactation. Social competition and selection in males and females ncbi. A mating system is a way in which a group is structured in relation to sexual behaviour.
Despite extensive research, the ultimate explanation for the evolution of brain size in primates remains largely unresolved walker et al. Primate mating systems and the evolution of neocortex size article pdf available in journal of mammalogy 891. Pdf primate mating systems and the evolution of immune. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Research associating increasing brain size with larger social groups and social complexity in primates predicts that brain size, specifically the size of the neocortex relative to the rest of the brain, will coevolve with mating systems exhibiting. However, we have shown elsewhere that bayesian phylogenetic methods allow the investigation of ancestral states and models of evolution of. Primate social and mating systems flashcards quizlet. Both males and females leave territories to pursue copula. The evolutionary history of primate mating systems christopher opie,1, quentin d. Unlike bones, behavior does not fossilize, so it is hard to infer the evolutionary history of social traits. Extrapair mating systems characterize temperate zone breeding birds stutchbury and morton 1995. Recurrent mating systems through recent human evolution favored certain male and female features over others. Branches and tips are colored for polygynandry red, harempolygyny orange and monogamy pink where the combined probability.
What factors shape the evolution of mating systems. Those features, in some instances, serve as telltale signatures of the mating system that led them to evolve. Primates show remarkable diversity in the types of mating systems exhibited. Primate phylogeny with ancestral states for mating systems derived from rj mcmc model of evolution. Pdf variable postpartum responsiveness among humans and. Mating systems and sexual selection in ungulatesnew insights.