The unprecedented level of diversity recorded among the clones of self-fertilizing gynogenetic unisexuals and self-fertilizing simultaneous hermaphrodites challenges current ideas on the predominant role of recombination in promoting evolution of biological diversity. Synthesizing recent and relevant information on the sexuality of fishes and suggesting new directions of research, this volume highlights the unprecedented level of diversity among clones of self-fertilizing gynogenetic unisexuals and self-fertilizing simultaneous hermaphrodites and the challenges this diversity poses to current theories on the predominant role of recombination in the evolution of biological diversity. It details the self-fertilizing and cyclical sex changing hermaphrodite species and investigates the spontaneous sex-change mechanism that so puzzles geneticists and endocrinologists as well as socio-ecologists and behavior specialists.
