Hermaphroditism is a derived and polyphyletic condition in fishes, documented in about 2%
of all extant teleost species scattered across more than 20 taxonomic families in 9 orders. It …

Discrete variation where one sex has more than one means of achieving the same
functional end, such as mating or nesting (alternative strategies and tactics), requires an …

The approaches of the social and the biological sciences to the study of behavior have been
seen as almost mutually exclusive. The nature versus nurture debate has been almost …

A general problem in evolutionary biology is that quantitative tests of theory usually require a
detailed knowledge of the underlying trade‐offs, which can be very hard to measure …

Abstract As George Williams pointed out in 1975, although evolutionary explanations, based
on selection acting on individuals, have been developed for the advantages of simultaneous …

Over the last 130 years, research has established that (a) sexual selection exists and is
widespread in the plant and animal kingdoms;(b) it does not necessarily entail sexual …

Small factors are the biggest contributors to the biggest changes in an ecosystem which may
lead to its demise. Simple things such as tweaking the humidity or tampering with the …

Bi-directional sex change in coral-dwelling fishes (genera Gobiodon and Paragobiodon)
has been attributed to a growth-rate advantage for females during the non-breeding season …

Sex change (sequential hermaphroditism) is well known in fishes, where its occurrence and
evolutionary advantage have been the focus of numerous reviews since the early s …

This study examined three aspects of protogynous sex change in Lythrypnus dalli
(Gobiidae):(1) social influences on the rate of sex change,(2) the sequence of behavioural …