The concept of a sustainable yield (SY, Gulland, 1983; Lannan et aL, 1989) has dominated
fisheries management for almost 50 years. The central idea is that each stock has a …

Guppies show geographical variation in many different kinds of traits. Traits covary with each
other, with predation and with other environmental factors. Phenotypic correlations are often …

Covering not only brown trout, but also their close relatives, this book provides valuable
information which is also relevant to animal ecology. The book highlights the global success …

Electrophoretic data were analysed from 49 species of freshwater fish, 57 species of marine
fish, and seven anadromous species. For each species, at least 15 individuals had been …

This book celebrates the guppy's unique contribution to evolutionary ecology. Ever since
Caryl Haskins described guppy populations as a'natural experiment'because of the way …

Residing within the immense diversity of fishes on earth is an equally impressive array of
locomotor abilities. Some fish continuously swim virtually their entire lives; some move …

Classical theories, for the evolution of senescence predict that organisms that experience
low mortality rates attributable to external factors, such as disease or predation, will evolve a …

The empirical study of natural selection reveals that adaptations often involve trade-offs
between competing functions. Because natural selection acts on whole organisms rather …

Sexual selection, and thus the evolution of both female mating preferences and preferred
male traits, may be constrained by costs associated with mate choice. Recent theoretical …

An investigation of the behaviour of guppies, Poecilia reticulata, in the wild reveals that
sexual conflict varies markedly in different habitats. Males from high-predation sites in …