Endocrine Sex Differentiation in Fish

ISBN-13: 9781466575608 / Angielski / Twarda / 2013 / 318 str.

T. J. Pandian

Opis

Of all vertebrates, fish exhibit unparalleled diversity of sexual plasticity and flexibility, ranging from gonochorism to unisexualism, and exceptional patterns of functional hermaphroditism. Fish farming and monosex aquaculture have led to reproductive dysfunction with males producing less milt, and females failing to ovulate and spawn. This book brings together relevant information on the role of the endocrine system on sexual differentiation in fish, and bridges the gap between molecular endocrinologists and fishery scientists.

Spis treści

Introduction
Sex Determination
Ontogeny of gonads
Regulatory Mechanisms

Ovarian Differentiation
Differentiation types
Interrupted oogenesis
Viviparity
Quantum of Yolk
Maternal Hormones
Sexual Receptivity
Stress and Spawning
Departures from Norm

Testicular Differentiation
Spermatogenesis
Xenogenesis and Differentiation
Spermiogenesis
Spermatophore and Spermatozuema
Accessery Glands
Corticosteroids
Spermiation
Departures from Norm

Gametogenesis in Unisexuals
Oogenesis
Paternal Leakage
Hybridogenesis
Genome addition

Morphotypes and Differentiation
Theory and Classification
Plastic Reversibles
Plastic Transformants
Fixed Sex Linked Genotypes
Gonado Somatic Index
Sneakers and Paternity
Aggressive Behavior
The Challenge Hypothesis

Sex Changers
Secondary Gonochores
Structural Diversity
Sexual Phenotypes
Simultaneous Hermaphrodites
Sequentials and Serials
Model Fishes
Social Mediation
Sex Changing Chronology
Gonadectomy

Sex reversal
Gonadal Differentiation
Chemical Inducers
Labile Period
Methods of Administration
Dosage
Sex reversal and Survival
Growth and Reproduction
Monosex Culture
Residues and Elimination
New Hypotheses Concepts

References
Author index
Species index
Subject index

O autorze

Pandian, T. J.