For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

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 …

Bateman gradients, the slope of the regression of reproductive success on mating success,
are among the most commonly reported measures of sexual selection. They are particularly …

Assessment of sexual selection in organisms with cryptic life histories is challenging,
although accurate parentage assignments using genotypic markers, combined with …

Darwinian sex roles characterized by competitive males and choosy females were long
thought to prevail in animals, driven by differences in energetic investment between male …

Personality variation is increasingly thought to have an adaptive function. This is less clear
for personality disorders (PDs)—extreme variants of personality that cause harm in most …

群居灵长类动物等级序列是长期进化的结果, 也是动物行为生态学研究的热点.
灵长类动物个体间通过等级序列, 合理的利用自然资源, 避免过多的伤亡, 保护群体内的幼弱者 …

The description of a species' mating patterns is often based on observations from a single
exemplar population; however, environmental variation can lead to variation in mating …

Sexual selection has been increasingly acknowledged as a major evolutionary driver in
many taxa. An unequal mating success arising through competition over mates is the …

Sex role reversal in 2 pipefish species, Syngnathus typhle and Nerophis ophidion, is
potentially explained by females reproducing twice as fast as males. Moreover, in oceanic …