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This book provides a comprehensive review of hermaphroditism in fishes. It focuses on the behavioral ecology of functional hermaphroditism in fishes and discusses its evolution. Approximately 99% of all vertebrate species consist of separate-sex individuals (gonochorists), i.e., pure males and pure females. The other 1% of vertebrate species are hermaphroditic, and almost all of them are fishes. Among hermaphroditic fishes, four major types of hermaphroditism are known: simultaneous (or synchronous) hermaphroditism, protandry (male-to-female sex change), protogyny (female-to-male sex change), and bidirectional sex change (or reversed sex change in protogynous species). The book examines the occurrence of hermaphroditism in relation to phylogeny and mating systems. It also reviews the hypotheses for the evolution of hermaphroditism, and the size-advantage model, which is the main theory for the evolution of sex change, tested in relation to the mating system. The appendix in the last chapter provides an annotated list of hermaphroditic fish species (ca. 500 spp.).
This field guide covers the major resource groups likely to be encountered in the fisheries of Myanmar. This includes stomatopods, shrimps, lobsters, crabs, bivalves, gastropods, brachiopods, sea cucumbers, cephalopods, sharks, batoids and bony fishes. Each resource group is introduced by a general section on technical terms and measurements pertinent to that group and an illustrated guide to orders and families of the group. The more important species are treated in detail with accounts providing scientific nomenclature, FAO names in English and French (where available), local names used in Myanmar, diagnostic features, one or more illustrations, maximum size, and notes on fisheries and habitat. Colour plates for a large number of the species are included. The guide is fully indexed and a list of further literature is appended.
Blennies are diverse group of bony fishes found around the globe. Most blennies are small and somewhat difficult to identify, so until recently these fish did not occupy the interests of many ichthyologists and even fewer ecologists. With nearly 900 species, blennies are important members of most coastal marine communities. This book should stimula
This volume presents statistical data on capture production & foreign trade of fishery commodities for all countries & territories worldwide. Recommended in: Walford's Guide to Reference Material.
This volume of the "FAO Yearbook of Fisheries Statistics--Capture production" presents the annual statistics, for a varying series of recent years ending in 1999, on a world-wide basis, of fish, crustacean, molluscs and other aquatic animals, residues and plants, taken for all purposes (commercial, industrial, recreational and subsistence) by all types and classes of fishing units operating both in inland, fresh and brackish water areas and in inshore, offshore and highseas fishing areas.