Browsing Sustainable aquaculture by Title
Now showing items 1015-1034 of 2402
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Genetic improvement of Nile tilapia (Oreochromis niloticus) with special reference to the work conducted by the WorldFish Center with the GIFT strain
(2011)Type: Journal ArticleWe mainly (but not exclusively) draw on research and development work carried out by The WorldFish Center (WorldFish). We review in detail the current state of development of a selection program that has had a main focus ... -
Genetic improvement of Nile tilapia (Oreochromis Niloticus): present and future
(2008)Type: Conference PaperWe mainly (but not exclusively) draw upon research and development work carried out by The WorldFish Center (WorldFish). We review the current state of development of selection programs that have had a main focus on growth ... -
Genetic improvement of the herbivorous blunt snout bream (Megalobrama amblycephala)
(2003)Type: Journal ArticleSelection experiments with the herbivorous blunt snout bream or Wuchang bream (Megalobrama amblycephala) were started in 1985. Mass selection for size and length/depth ratio resulted in a significant increase in growth and ... -
Genetic Improvement Programs Advisory Programs in Africa and Asia
(2022)Type: PresentationWorldFish Genetics Workshop 2022 - Presentation on the Genetic Improvement Advisory Programs in Africa and Asia. -
Genetic improvement programs for aquaculture species in developing countries: prospects and challenges
(2009)Type: Conference PaperAquaculture in developing countries is largely based on unimproved fish strains. There is ample evidence indicating the potential of genetic improvement programs and a range of selection methods may be used. Examples of ... -
Genetic improvement programs for red tilapia Oreochromis spp in Asia
(2011)Type: Conference PaperRed tilapia (Oreochromis spp) has become popular in Asian countries due to its greater economic value relative to Nile tilapia. As there is a growing demand for quality seed of this species, the WorldFish Center has initiated ... -
Genetic improvement, support to aquaculture value chains and promotion of fish in foods systems in the Southern African Development Community (SADC)
(2022)Type: PresentationWorldFish Genetics Workshop 2022- presentation on genetic improvement, support to aquaculture value chains and promotion of fish in foods systems in the Southern African Development Community (SADC) -
Genetic make up of exotic catfish Clarias gariepinus in India
(2003)Type: Journal ArticleTwelve enzymes were assayed in Clarias gariepinus collected from India and Thailand. Genetic variation was observed at eight loci, viz EST-1* and 2*, AAT*, ODH*, MDH* GPI* L, GPI-1*M and HK*. Observed heterozygosities were ... -
Genetic management of aquaculture stocks in sub-Saharan Africa
(2006)Type: ReportThis document is a report of a workshop on genetic resource management in sub-Saharan Africa. -
Genetic parameter and genotype by environment interaction for body weight of Oreochromis shiranus
(2006)Type: Journal ArticleGenetic and phenotypic parameter estimates for tagging and harvest body weights were obtained from the F1 base (377 offspring of 59 full-sib families), F2 (1241 offspring of 52 full- and 33 half-sib families) and F3 (1052 ... -
Genetic parameters and correlated responses in female reproductive traits in the GIFT strain
(2016)Type: Journal ArticleThe aim of this study was to examine genetic variation in reproductive traits and to estimate correlated responses in such traits to selection for high growth rate in the GIFT strain of Nile tilapia (Oreochromis niloticus). -
Genetic parameters and response to selection for live weight in the GIFT strain of Nile Tilapia (Oreochromis niloticus)
(2005)Type: Journal ArticleGenetic improvement programs can increase the productivity of cultured aquatic species. Their rigorous design requires knowledge about parameters such as herit-ability and correlations among the traits under selection. ... -
Genetic parameters for black spot disease (diplopstomiasis) caused by Uvulifer sp. infection in Nile tilapia (Oreochromis niloticus L.)
(2021)Type: Journal ArticleBlack spot disease (diplopstomiasis), an external melanized host inflammatory response caused by a number of digenetic trematode parasites, results in slow growth, deformities and increased mortality among many freshwater ... -
Genetic parameters for resistance to Tilapia Lake Virus (TiLV) in Nile tilapia (Oreochromis niloticus)
(2020)Type: Journal ArticleTilapia Lake Virus (TiLV) is one of the primary disease concerns for tilapia farming, with mass mortality events and biosecurity restrictions threating aquaculture in several continents. Selective breeding for improved ... -
Genetic parameters for survival during the grow-out period in the GIFT strain of Nile tilapia (Oreochromis niloticus) and correlated response to selection for harvest weight
(2015)Type: Journal ArticleThe aims of this study were the estimation of genetic parameters for survival rate from tagging until harvest and the evaluation of the correlated response in survival rate to selection for harvest weight in the genetically ... -
Genetic parameters for uniformity of harvest weight and body size traits in the GIFT strain of Nile tilapia
(2016)Type: Journal ArticleAnimal breeding programs have been very successful in improving the mean levels of traits through selection. However, in recent decades, reducing the variability of trait levels between individuals has become a highly ... -
Genetic quality of cultured tilapia stocks in Africa
(2008)Type: Journal ArticleAfrican aquaculture is poised for rapid expansion. However, one of the key constraints holding back growth of the sector is the poor quality of the fish stocks available for culture. The problems of declines in growth ... -
Genetic relationships among founders of a silver carp (Hypophthalmichthys molitrix) genetic improvement program in Bangladesh
Type: Journal ArticleSilver carp (Hypophthalmichthys molitrix) is an important aquaculture species in Bangladesh and globally. Multiple introductions have been made of this exotic species to Bangladesh since 1969. Accordingly, the genetic ... -
Genetic variance for uniformity of harvest weight in Nile tilapia (Oreochromis niloticus)
(2016)Type: Journal ArticleCompetition for resources is common in aquaculture, which inflates the variability of fish body weight. Selective breeding is one of the effective approaches that may enable a reduction of size variability (or increase in ... -
Genetic variation in lytic activities of blood serum from Nile tilapia and genetic associations with survival and body weight
(1999)Type: Journal ArticleThe objective of the present investigation was to determine the genetic variation in lysozyme activity and SH activity in blood serum from a family material of Nile tilapia (O. niloticus) and to study the genetic associations ...
