Description
Taylor & Francis Ltd Sexuality In Fishes 2010 Edition by T. J. Pandian
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 systemsSexual patternIntersexualityGonochorism-Gonadal differentiation; Morphotypes; Sex ratio; Operational sex ratioUnisexualism-Hybridization; Polyploidization; Poecilia formosa; Menidia clarkhubbsi; Carassius auratus; Cobitis complex; Poeciliopsis monacha-lucida; Phoxinus eos. neogaeus; Rutilus alburnoidesSimultaneous hermaphroditism-Self-fertilizing hermaphrodites; Egg trading hermaphrodites; Potential self-fertilizersSequential hermaphroditismProtogynous hermaphroditism-Transition load; Classification; Pathways and duration of sex change; Sex ratioProtandric hermaphroditism-Gonadal organization; Sex ratio; Pathways of sex changeSerial hermaphroditism-Marian hermaphroditism; Okinawan hermaphroditism; Serial sex change; Cascade and causes of sex changeMating systems-Monogamy; Alternate mating strategies; Morphism; Lekking and promiscuity; Parental careReferences * Author index * Species index * Subject index