There is increasing interest in individual differences in animal behaviour. Recent research
now suggests that an individual's behaviour, once considered to be plastic, may be more …

The impetus for this book arose out of my previous book, The Evolution of Life Histories
(Roff, 1992). In that book I presented a single chapter on quanti tative genetic theory …

Heritabilities, commonly used to predict evolutionary potential, are notoriously low for
behaviors. Apart from strong contributions of environmental variance in reducing …

The validity of the assumption, that laboratory estimates of heritabilities will tend to
overestimate natural heritabilities, due to a reduction in environmental variability and thus …

Female preferences for specific male phenotypes have been documented across a wide
range of animal taxa, including numerous species where males contribute only gametes to …

We assessed the potential for several acoustic properties of the advertisement calls of male
gray tree frogs to affect relative mating success by relating patterns of variation in these …

Animal vocalizations play an important role in individual recognition, kin recognition, species
recognition, and sexual selection. Despite much work in these fields done on birds virtually …

Most theoretical models on evolution of male secondary sexual characters and female
preferences for these characters suggest that the male characters evolve in response to …

Abstract Female mate preferences are a major cause of diversity and elaboration in male
sexual traits. Here we characterize the shape of female preference functions for pulse length …

Acoustic signals used by males to attract females are among the most prominent examples
of secondary sexual traits, yet we have only limited understanding of their genetic …