1st Edition

Sexuality in Fishes

By T. J. Pandian Copyright 2011

    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.

    Introduction—Life span and sexual maturity; Spawning process; Fecundity; Egg size; Sperm count and sperm cells; Breeding sites; Breeding times; Breeding systems
    Sexual pattern
    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


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