Browsing WorldFish Community by Title

Now showing items 2137-2156 of 5196

    • Genetic parameters and correlated responses in female reproductive traits in the GIFT strain 

      Hamzah, A.; Nguyen, N.H.; Mekkawy, W.; Khaw, H.L.; Yee, H.Y.; Abu Bakar, K.R.; Ponzoni, R.W.; Nor, S.A.M. (2016)
      Type: Journal Article
      The 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) 

      Ponzoni R. W.; Hamzah, A.; Tan, S.; Kamaruzzaman, N. (2005)
      Type: Journal Article
      Genetic 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.) 

      Karisa, H.C.; Ali, S.E.; Marijani, E.A.; Ahmed Ibrahim, N.; Trinh, T.Q.; Chadag, V.; Benzie, J.; Harrison Charo Karisa: 0000-0001-5323-794X; Shimaa El Sayed Mohamed Ali: 0000-0002-0227-8124; Nabil Ahmed Ibrahim: 0000-0002-2007-7684; Vishnumurthy Mohan Chadag: 0000-0002-2574-284X; John Benzie: 0000-0001-9599-8683 (2021)
      Type: Journal Article
      Black 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) 

      Barría, A.; Trinh, T.Q.; Mahmuddin, M.; Benzie, J.; Chadag, V.; Houston, R.; Mahirah Mahmuddin: 0000-0002-4907-7784; John Benzie: 0000-0001-9599-8683; Vishnumurthy Mohan Chadag: 0000-0002-2574-284X (2020)
      Type: Journal Article
      Tilapia 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 

      Hamzah, A.; Mekkawy, W.; Khaw, H.L.; Nguyen, N.H.; Yee, H.Y.; Abu Bakar, K.R.; Mohd Nor, S.A.; Ponzoni, R.W. (2015)
      Type: Journal Article
      The 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 

      Marjanovic, J.; Mulder, H.A.; Khaw, H.L.; Bijma, P. (2016)
      Type: Journal Article
      Animal 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 

      Brummett, R.E. (2008)
      Type: Journal Article
      African 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 

      Hamilton, M.G.; Mekkawy, W.; Barman, B.K.; Alam, M.; Karim, M.; Benzie, J.; Matthew Gray Hamilton: 0000-0001-8098-8845; Wagdy Mekkawy: 0000-0002-3991-7321; Benoy Kumar Barman: 0000-0003-0554-2207; Md. Badrul Alam: 0000-0002-7079-4358; Manjurul Karim: 0000-0003-4280-3568; John Benzie: 0000-0001-9599-8683
      Type: Journal Article
      Silver 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) 

      Khaw, H.L.; Ponzoni, R.W.; Yee, H.Y.; Bin Aziz, M.A.; Mulder, H.A.; Marjanovic, J.; Bijma, P. (2016)
      Type: Journal Article
      Competition 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 

      Chiayvareesajja, J.; Roed, K.H.; Eknath, A.E.; Danting, J.C.; De Vera, M.P.; Bentsen, H.B. (1999)
      Type: Journal Article
      The 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 ...

    • Genetic variation in wild populations and farmed stocks of Nile tilapia (Oreochromis niloticus) in Madagascar 

      Ravakarivelo, M.; Pepey, E.; Benzie, J.; Raminosoa, N.; Rasamoelina, H.; Mikolasek, O.; de Verdal, H.; John Benzie: 0000-0001-9599-8683 (2019)
      Type: Journal Article
      Four farmed stocks and four wild populations of Nile tilapia (Oreochromis niloticus), which was first introduced to Madagascar sixty years ago, were assayed for genetic variation at nine microsatellite loci to determine ...

    • Genetically Improved Farmed Tilapia (GIFT) 

      WorldFish (2015)
      Type: Brief
      Genetic improvement through selective breeding has been used for millennia on crops and livestock, but up until the 1980s, little had been done to utilize this process for farmed fish. In response to the inadequate supply ...

    • Genetically improved farmed tilapia (GIFT) selective breeding program 

      Trinh, T.Q. (2022)
      Type: Presentation
      WorldFish Genetics Workshop 2022 - ppt presentation about the history, present and future of the GIFT tilapia selective breeding program.

    • Genetically improved rohu (Labeo rohita) for Bangladesh 

      Hamilton, M.G.; Shelley, C.C.; Matthew Gray Hamilton: 0000-0001-8098-8845; Colin Charles Shelley: 0000-0002-5268-3806 (2020)
      Type: Brief
      The WorldFish Rohu Genetic Improvement Program aims to substantially increase aquaculture productivity in Bangladesh by developing and disseminating rapidly growing rohu to farmers. Genetically improved rohu seed will be ...

    • Genetically improved rohu (Labeo rohita) for Bangladesh (Bangla version) 

      Shahreen, H.; Barman, B.K.; Haq Shahreen: 0000-0002-1352-7253; Benoy Kumar Barman: 0000-0003-0554-2207 (2020)
      Type: Brief
      The WorldFish Rohu Genetic Improvement Program aims to substantially increase aquaculture productivity in Bangladesh by developing and disseminating rapidly growing rohu to farmers. Genetically improved rohu seed will be ...

    • Genetically improved rohu carp is now in the hands aof Bangaldeshi farmers 

      Hamilton, M.G.; Yeasin, M.; Matthew Gray Hamilton: 0000-0001-8098-8845 (2021)
      Type: Blog
      Most farmers of livestock and crops have long had access to genetically improved breeds and varieties, but that has not been the case for carp farmers such as Shafiujjaman Momin from Bagatipara upazila ...

    • Genetics and the study of fisheries connectivity in Asian developing countries. 

      Ablan, M.C.A. (2006)
      Type: Journal Article
      The paper presents a brief summary of the available methods to determine connectivity using genetic markers and two examples where they have been applied in Southeast Asia. Recommendations for the more efficient conduct ...

    • Genetics of adaptation in rainbow trout: a multi disciplinary approach 

      Dupont-Nivet, M.; Prunet, P.; Bégout, M.L.; Pellegrini, P.; Khaw, H.L.; Millot, S.; Péan, S.; Aupérin, B.; Valotaire, C.; Rolland, J.; Kerneis, T.; Goardon, L.; Quillet, E. (2010)
      Type: Conference Paper
      Ability of fish to adapt to changing environments and stressors is a key trait for breeders, especially when they sell eggs or young fish all over the world. So far, this ability has not been introduced in any breeding ...

    • Genetics of flesh quality in fish 

      Nguyen, N.H. (2011)
      Type: Journal Article
      Genetic improvement has led to substantial increase in productivity in farmed animals and in tropical fin fish, this is evident in tilapia. The GIFT (Genetically Improved Farmed Tilapia) strain of Nile tilapia (Oreochromis ...

    • Genetics of flesh quality in fish 

      Nguyen, N.H.; Ponzoni, R.W.; Hamzah, A.; Yee, H.Y.; Abu-Bakar, K.R.; Khaw, H.L. (2010)
      Type: Conference Paper
      Flesh quality has gained importance among consumers and in the aquaculture industry because it is directly related to human health and nutrition. Flesh quality comprises several different (freshness, appearance, smell, ...