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Sexuality in Fishes




ISBN 9781578086856
Published September 15, 2010 by CRC Press
218 Pages

 
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Book Description

Until recently, breeding efforts in mass produced food crops centered on high yield production while sacrificing flavor, taste and other quality traits. Now, more emphasis is being placed on the enhancement of nutritional and medicinal properties of the food crops. Aside from merely being considered a source of food, crops are today being looked from a health benefit perspective and even from an environmental standpoint. This volume looks at the use of crops for a myriad of purposes, including the prevention and/or mitigation of various diseases, vaccine and antigen production, biofuel production, and the suppression of weeds.

Table of Contents

Introduction—Life span and sexual maturity; Spawning process; Fecundity; Egg size; Sperm count and sperm cells; Breeding sites; Breeding times; Breeding systems
Sexual pattern
Intersexuality
Gonochorism—Gonadal differentiation; Morphotypes; Sex ratio; Operational sex ratio
Unisexualism—Hybridization; Polyploidization; Poecilia formosa; Menidia clarkhubbsi; Carassius auratus; Cobitis complex; Poeciliopsis monacha—lucida; Phoxinus eos. neogaeus; Rutilus alburnoides
Simultaneous hermaphroditism—Self-fertilizing hermaphrodites; Egg trading hermaphrodites; Potential self-fertilizers
Sequential hermaphroditism
Protogynous hermaphroditism—Transition load; Classification; Pathways and duration of sex change; Sex ratio
Protandric hermaphroditism—Gonadal organization; Sex ratio; Pathways of sex change
Serial hermaphroditism—Marian hermaphroditism; Okinawan hermaphroditism; Serial sex change; Cascade and causes of sex change
Mating systems—Monogamy; Alternate mating strategies; Morphism; Lekking and promiscuity; Parental care
References • Author index • Species index • Subject index

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Author(s)

Biography

T.J. Pandian: Visiting Professor, CAS Marine Biology, Annamalai University, Tamil Nadu, India