Ecology, sexual selection, and the evolution of mating systems.

  title={Ecology, sexual selection, and the evolution of mating systems.},
  author={Stephen T. Emlen and Lewis W. Oring},
  volume={197 4300},

The Evolution of Mammalian Sociality in an Ecological Perspective

This chapter provides an overview of mammalian social evolution, including selected history and preliminary definitions, and a brief discussion of “routes” to sociality, constrained by Hamilton’s rule.

Females drive primate social evolution

It is found that change in male membership in primate groups is positively correlated with divergence time in pairwise comparisons, consistent with male numbers adjusting to female group size and highlights the importance of focusing on females when studying primate social evolution.

Resource presence and operational sex ratio as determinants of copulation duration in the flyRhagoletis juglandis

The effect of the resource presence and its interaction, with the effect of OSR on copulation duration in Rhagoletis juglandis, a tephritid fly species characterized by a resource-defence mating system in which males defend territories on walnut fruit is examined.

Too Many Males or Too Many Females? Classroom Sex Ratio, Life History Strategies and Risk-Taking Behaviors

Prior research finds that sex ratio, defined as the proportion of males and females in a given context, is related to engagement in risk-taking behaviors. However, most research operationalizes sex

Genotype‐by‐environment interactions for precopulatory mate guarding in a lek‐mating insect

A potential for adaptive evolution of mate‐guarding plasticity in natural populations of lek‐mating species is suggested after significant inbred line‐by‐competitor treatment interactions on mating latency and copulation duration with the second female were found suggesting genetic variation in the degree of behavioral plasticity.

Competition for access to mates predicts female‐specific ornamentation and male investment in relative testis size

The incidence of both heightened premating sexual selection on females and postmating selection on males contradicts assertions that sex roles are straightforwardly reversed in dance flies and supports the hypothesis that ornament diversity in dance fly depends on female receptivity to mates, which is associated with contests for nutritious nuptial gifts provided by males.

Bateman Gradients and Alternative Mating Strategies in a Marine Isopod

Differences in mate availability, not differences in sexual competency, are responsible for observed variance in fitness within, and for the equality of fitnesses among, the three male morphs in this species.

Competition for access to mates predicts female-specific ornamentation and polyandry

The hypothesis that ornament diversity in dance flies depends on female receptivity, which is associated with contests for nutritious nuptial gifts provided by males, is supported and increases infemale receptivity lead to higher levels of polyandry and sperm competition among males.



Ecological adaptations for breeding in birds


  • S. Goldhor
  • Environmental Science
    The Yale Journal of Biology and Medicine
  • 1964
The availability of carbon (C), nitrogen (N) and sulfur (S) for the vegetation has increased in many ecosystems on earth since beginning of the industrial revolution. The change in availability of

Aggressiveness, Territoriality, and Sexual Behavior in Field Crickets (Orthoptera: Gryllidae)

Groups of adult male field crickets caged in small arenas form essentially linear dominance hierarchies which are stable for short periods of time and can be described in terms of several characteristics.

Possible Role of Behavior in Regulating Greater Prairie Chicken Populations

Inter-booming ground movements of both males and females indicated that booming ground areas could not be considered separate gene pools, and data acquired may be helpful in determining the role of behavior in population dynamics of greater prairie chickens in Kansas.

Annual Population Changes in California Quail

Observations and age ratios obtained during fall hunting have indicated wide fluctuation of reproductive success, age ratios varying from 6-81 percent young, and the key factor in reproductive rate was the drive to keep nesting and renesting throughout the summer, resulting presumably from a physiological preconditioning whose nature and origin is unknown.