Genetic Sex Differentiation in Fish

A comprehensive study of sex differentiation gonochoric and hermaphroditic fishes, this book examines sex chromosomes and sex determining genes, emphasizing the need to search for more than one sex-determining gene residing on different chromosomes. It traces the origin of hermaphrodites from secondary gonochores and explains the conservation of homologous sex differentiation and steroid receptor genes among gonochores and hermaphrodites. The author identifies the optimal broodstock size and the appropriate candidate species for bait. He shows that the analysis of steriles and mutants has demonstrated the value of fishes as a system for genetic dissection of human development and diseases.

Introduction. Sex Determination. Hermaphroditism. Patterns of Sex Differentiation. Impact of New Techniques. Differentiation in Gonochores. Sex Chromosomes. Sex Determining Genes. Sex Differentiation Genes. Sex Steroid Receptor Genes. Gonadal Differentiation. Model Fshes. Genetic Cascades. Gonadal Ducts. Puberty and Maturation. Acrosomeless Sperm and Micropylar Eggs. Secondary Sex Characters. Morphotypes and Differentiation. Reproductive Senescence. Stem Cells and Germ Cells. Differentiation in Hermaphrodites. Patterns of Hermaphroditism. Simultaneous Hermaphrodites. Sex Changing Hermaphrodites. Structural and Temporal Costs. Sex Chromosomes and Genes. Sex Differentiation Genes. Gonadal Differentiation. Morphotypes and Differentiation.
Strelity and Mutants. Gonadectomy. Abnormals and Steriles. Mutants.