These proceedings had their origin in a conference entitled 'Alternative Life History Styles of Fishes and Other Organisms' which was held in Grahamstown, South Africa, in June 1987. The idea for the conference arose out of the fascination of an African ichthyologist/ecologist (MNB) for the conceptual models of fish life-history styles which were being developed by an ichthyologist/epigeneticist based in Canada but with field experience in Europe, Asia and Africa (EKB). I had never been fully convinced that the adaptationist arguments of the neo-Darwinians ex plained all ontogenetic and evolutionary phenomena, and found that the novel approach to organism development and evolution which had been adopted by Balon, as well as by others such as L0vtrup, was refreshing and enlightening. Their perspectives, combined with the new ideas on self-organisation and the link between nonequilibrium thermodynamics and biology by Prigogine, Jantsch, Laszlo, Wicken, Weber and others, seemed to suggest that new ways of interpreting old findings were now becoming available. On delving into the literature I found that a variety of zoologists were working in the field of alternative life-history styles and autopoiesis, yet they seemed to be unaware of one another's work. We decided that it was time for a meeting of minds. The aim of the conference was to examine the way in which epigenesis (i. e."

This special volume is dedicated to the contributions of women ichthyologists. Three colleagues were selected to represent all women ichthyologists, Ethelwynn Trewavas (ET), Rosemary Lowe-McConnell (Ro) and Eugenie Clark (Genie). All have had distinguished professional careers and have contributed in their own ways to their science. The career of each is highlighted by a personal interview with one of the editors of the volume, a bibliography of their lifetime publications, and a biography of their careers. Questions of historical inequities and current controversies in the treatment of women ichthyologists by their peers are raised and addressed by the women themselves. The personal and professional influences of these three women, and other women ichthyologists, are highlighted. A survey article by Pat Brown brings a number of women ichthyologists to the attention of a broader audience, and points the way for a more comprehensive historical consideration of the accomplishments and contributions of women ichthyologists. The volume continues with 16 solicited and contributed papers. ET's studies of taxonomy and life history are echoed in papers on the taxonomy and systematics of marine angelfishes, and of freshwater bitterlings, a review of reproduction in the North Atlantic ichthyofauna, and a comparison of reproductive styles and systematics of African minnows. Ro's studies on ecology, life history and behaviour are paralleled by papers on growth and metabolism in piranha, the community structure in tide pool fishes, and the social system and reproductive patterns in groupers. Genie's pioneering work on sexual roles and sex change, and her field studies of the behaviour of marine fishes are reflected in papers on gonadal structure and environmental sex determination in brook lamprey, sexual patterns in hawkfish, reproduction and systematics in phallostethids, gonadal structure and systematics in gobiids, reproductive and predator avoidance behaviour in razorfish, early ontogeny of an African mouth brooder, and alternative life histories in killifish.

These proceedings had their origin in a conference entitled 'Alternative Life History Styles of Fishes and Other Organisms' which was held in Grahamstown, South Africa, in June 1987. The idea for the conference arose out of the fascination of an African ichthyologist/ecologist (MNB) for the conceptual models of fish life-history styles which were being developed by an ichthyologist/epigeneticist based in Canada but with field experience in Europe, Asia and Africa (EKB). I had never been fully convinced that the adaptationist arguments of the neo-Darwinians ex plained all ontogenetic and evolutionary phenomena, and found that the novel approach to organism development and evolution which had been adopted by Balon, as well as by others such as L0vtrup, was refreshing and enlightening. Their perspectives, combined with the new ideas on self-organisation and the link between nonequilibrium thermodynamics and biology by Prigogine, Jantsch, Laszlo, Wicken, Weber and others, seemed to suggest that new ways of interpreting old findings were now becoming available. On delving into the literature I found that a variety of zoologists were working in the field of alternative life-history styles and autopoiesis, yet they seemed to be unaware of one another's work. We decided that it was time for a meeting of minds. The aim of the conference was to examine the way in which epigenesis (i. e."