Genetic Resources Of Indian Major Carps

This publication, written for resource managers, aquaculturists and scientists, reviews the genetic resources of Indian major carps: catla (Catla catla), rohu (Labeo rohita), mrigal (Cirrhinus mrigala) and kalbasu (Labeo calbasu). The review includes information on spawning behaviour and breeding under natural and culture conditions, distribution, genetic characterisation, status of genetic resources, conservation efforts and hybridization among Indian major carps and with other cyprinids. Research on genetic improvement through selective breeding, chromosomes-set manipulation and genetic engineering in India is reviewed. The status of Indian major carps in Bangaldesh, Thailand and Viet Nam as well as work in India on cryopreservation and gene banking are also discussed. Contents Chapter 1: Introduction; Chapter 2: Genetic Resources of Indian Major Carps, Their Distribution & Characterization; Genetic resources of indian major carps, About indian major carps, Spawning behaviour of indian major carps, Natural spawning, Bundh breeding, Controlled breeding, Distribution, Distribution of catla catla (catla), Distribution of labeo rohita (rohu), Distribution of cirrhinus mrigala (mrigal), Distribution of labeo calbasu (kalbasu), Major carps in reservoirs, Genetic characterization of major carps, Application of biochemical and molecular genetic techniques, Biochemical genetic studies, Molecular genetic studies, Present status of major carp germplasm resource in relation to environmental changes and habitat modifications; Chapter 3: Hybridization; Hybridization of indian major carps in nature, Artificial/experimental hybridization in indian major carps, Interspecific hybrids, Characteristics of the interspecific hybrids of indian major carps, Labeo rohita x labeo calbasu (rohu-kalbasu) L calbasu x L rohita (kalbasu-rohu) hybrids, L fimbriatus x L rohita (fimbriatus-rohu) hybrid, Fertility of interspecific hybrids, Intergeneric hybrids, Characteristics of some useful intergeneric hybrids, L rohita x C catla (rohu-catla) hybrid, C catla x L rohita (catla-rohu) hybrid, C catla x C mrigala (catla-mrigal) hybrid, C mrigala x C catla (mrigal-catla) hybrid, L rohita x C mrigala (rohu-mrigal) hybrid, L fimbriatus x C catla (fimbriatus-catla) and C catla x L fimbriatus) hybrids, Intergeneric hybrids between Indian major carps and common carp (Cyprinus carpio var communis), Characteristics of hybrids produced between Indian carps and common carp (Cyprinus carpio var communis), L rohita x C carpio (rohu-common carp) htbrid, C carpio x L rohita (common carp-rohu) hybrid, C carpio x C catla (common carp-catla) hybrid, Evaluation of meat of hybrids, Mixed spawning and hybridization, Annex; Chapter 4: Cytogenetic Studies; Karyotype of indian major carps, Catla catla and Labeo rohita, Cirrhinus mrigala, Labeo calbasu, Karyotype studies of hybrids, Indian major carp hybrids, Hybrids between indian major carps and common carp, Karyotype studies in relation to hybrid viability and fertility, Karyotype studies in relation to hybrid viability, Karyotype studies in relation to hybrid fertility/sterility, Chromosome banding studies; Chapter 5: Chromosome Manipulations; Gynogenesis, Natural gynogenesis, Artifical (induced) gynogenesis, Induction of meiotic gynogenesis in indian major carps, Induction of mitotic gynogenesis in indian major carps, Meiotic versus mitotic gynogenesis, Androgenesis, Natural androgenesis, Artificial androgenesis, Polyploidy, Natural polyploidy (triploidy/tetraploidy), Artificial induction of polyploidy in indian major carps, Gene transfer or genetic engineering in indian major carps; Chapter 6: Selective Breeding; Selection work on indian major carps in india, Selective breeding of rohu, Selective breeding of catla; Chapter 7: Status of Genetic Research on Indian Major Carps in other Countries; Bangladesh, Thailand, Vietnam; Chapter 8: Cryogenic Preservation of Carp Milt and Genebanking; Cryopreservation of embryos, Gene banking; Chapter 9: Summary; Chapter 10: References.

This publication, written for resource managers, aquaculture and scientists, reviews the genetic resources of Indian major carps: the catla (Catla catla), the rohu (Labeo rohita), the mrigal (Cirrhinus mrigala), and the Kalbasu (Labeo calbasu). The review includes information on spawning behaviour and breeding under natural and culture conditions, distribution, genetic characterization, status of genetic resources, conservation efforts, and hybridization among Indian major carps and with other cyprinids. Research on genetic improvement through selective breeding, chromosome-set manipulation and genetic engineering in India is reviewed. The status of Indian major carps in Bangladesh, Thailand, Vietnam and India work on cryopreservation and genebanking is also discussed.

There are over 1300 species of cyprinids in Asia, and these are utilized by people for food (capture fisheries and aquaculture) and as ornamental species. This publication focuses on cyprinid species that are bred in hatcheries and used in aquaculture and restocking activities. Introduced and threatened species of cyprinids in Asia are also discussed. We are well aware that we have not covered many other cyprinid species that are utilized by people in Asia in various ways: wild species in capture fisheries, self-recruiting species in aquaculture ponds and other water bodies, and aquarist species.

Common carp is one of the oldest cultured and most domesticated fish in the world, and is a very adaptable species in both the wild and in culture conditions. This publication describes the genetic resources of 31 strains of common carp maintained in a living gene bank at the Fish Culture Research Institute in Hungary. Five main features are evaluated: survival, weight gain, feed conversion ratio, slaughter value and fat content of the meat.

Of the workshop -- Background of the workshop -- Report of the workshop -- Conclusions and recommendations of the workshop -- Contributed papers. Developing policies for the management of fishery genetic resources / D.M. Bartley and A. Toledo -- Status and trends in genetic resources of capture fisheries / W.S. Grant -- Issues, status and trends in deep-sea fishery genetic resources / P.J. Smith -- Genetic resources for aquaculture : status and trends / R.S.V. Pullin -- Fish genomics and analytical genetic technologies, with examples of their potential applications in management of fish genetic resources / Z. Liu.