Sexual selection favours the evolution and maintenance of polygamy, which is dominant reproductive strategy in insects. Monogamy can evolve very short-lived species due to time constraints. Here we study adult activity mating behaviour a population damselfly Ischnura hastata, rarely seen mating, has been suggested be monandric, wetlands Isabela Island, Galápagos. By means mark-recapture methods...

The Darwinian theory of sexual selection predicts languagerelated sex differences in humans originating from and relevant for mate choice. Due to past sex-different selection pressures, it can be assumed that men are more prone to verbal displays than women, both in intrasexual competition and in intersexual selection (i.e., courtship). They should benefit more from high verbal proficiency in m...

helping to overcome this gap. The ‘bottom up’ or genetic approach to studying speciation has hunted down genes responsible for premating and postmating isolation, and then shown that the gene sequences exhibit signatures of recent selection. But this approach has told us little about the nature of that selection. Is selection divergent or has divergence occurred under uniform selection? Was sel...

In the research of Genetic Algorithms (GAs), many models focus on problems where each individual's tness is independent of others. In this paper, I introduce simple models to study mate selection in the context of GA. Allowing individuals to search for mates is an approach to model interdependent tnesses of population members. This introduces another source of selection pressure, and the result...

Sexual selection is often assumed to be strong and consistent, yet increasing research shows it can fluctuate over space and time. Few experimental studies have examined changes in sexual selection in response to natural environmental variation. Here, we use a difference in resource quality to test for the influence of past environmental conditions and current environmental conditions on male a...

Lekking males compete for females within and among leks, yet female choice is expected to work differently at each of these spatial scales. We used paternity analyses to examine how lek versus male attributes influence mate choice in the blue-crowned manakin Lepidothrix coronata. We tested the hypotheses that females prefer (i) to mate at larger leks where a larger number of potential mates can...

Genes of the major histocompatibility complex (MHC) have been a source of considerable research interest, owing in large part to the growing body of evidence that they may be subject to both natural and sexual selection. However, much remains to be learned about the dynamics of MHC genes in subdivided populations, particularly those characterized by divergent ecological pressures. In this study...

Leks are classic models for studies of sexual selection due to extreme variance in male reproductive success, but the relative influence of intrasexual competition and female mate choice in creating this skew is debatable. In the lekking lance-tailed manakin (Chiroxiphia lanceolata), these selective episodes are temporally separated into intrasexual competition for alpha status and female mate ...

Theories of partner selection emphasize the principal role available partners in relationship market. As education is a common socioeconomic attribute through which individuals choose mate, macrostructure theory highlights importance as

Personality characteristics figure prominently in unstmctured nominations of what people want in a mate (Langhome & Secord, 1955). Both women and men say they want a mate who is kind, understanding , dependable, sociable, stable, and intelligent. Personality traits such as these have made their way onto more stmctured instmments designed to assess mate preferences but not in a systematic fashio...