Advances by Selective Breeding for Aquatic Species: A Review
نویسندگان
چکیده
During the last 40 years it has been shown that well planned family-based breeding programs yield high rates of genetic improvement for aquatic species. The genetic gain has been greater than 12% per generation for growth rate and for disease resistance when challenge tests are applied. The main reasons for the large genetic gains observed for aquatic species are their relatively high fertility and the natural existence of broad genetic variation for economically important traits, both of which allows a very high selection intensity to be applied. However, the genetic improvement of species grown in aquaculture is far behind that achieved for animals and plants. In 2010 less than 10% of aquaculture production was based on genetically improved stocks. Breeding programs for aquatic species should be family based and include new biotechnologies like genomic selection.
منابع مشابه
Disease Resistant Fish and Shellfish Are within Reach: A Review
Disease in fish and shellfish is one of the main problems facing aquaculture production. Therefore, all attempts should be made to increase the rate of survival and, thus, reduce economic losses. Much has been done to develop vaccines and medical treatments to reduce mortality; and however, farming of aquatic species has a long way to go to optimize the environmental conditions for the animals ...
متن کاملPotential Applications of Reproductive and Molecular Genetic Technologies in the Selective Breeding of Aquaculture Species
The use of reproductive and genetic technologies can increase the efficiency of selective breeding programs for aquaculture species. Four technologies are considered, namely: marker-assisted selection, DNA fingerprinting, in-vitro fertilization, and cryopreservation. Marker-assisted selection can result in greater genetic gain, particularly for traits difficult or expensive to measure, than con...
متن کاملInvestigation of biological characteristics and breeding potentials of some species of surgeonfish (Family: Acanthuridae) inhabiting the Persian Gulf for exploitation in the ornamental fish breeding industry
The coral reefs of the Persian Gulf are among the richest coral reserves systems in the world. These valuable habitats have a remarkable diversity of aquatic species, especially fish. One of the important ecological groups living in coral reefs of the Persian Gulf is surgeonfish (Family: Acanthuridae), which have been considered by researchers in many studies. These fish can be introduced as br...
متن کاملA review of the biological characteristics of suckermouth catfish (Hypostomus plecostomus Linnaeus, 1758) and its impacts on aquatic ecosystems
Following the report of suckermouth catfish (Hypostomus plecostomus) from Anzali Wetland, the present study was conducted to review the biological and ecological characteristics of this species and its effects on aquatic ecosystems. A literature review revealed that the suckermouth catfish is native to South America and one of the most popular species in the ornamental fish industry. This speci...
متن کاملMixing It Up: The Role of Hybridization in Forest Management and Conservation under Climate Change
Forest tree hybrid zones provide a wealth of novel genetic variation that can be harnessed to safeguard populations in changing climates. In the past 30 years, natural and artificial forest hybrid zones have facilitated significant contributions to selective breeding programs, conservation, and our understanding of the evolutionary processes and mechanisms that influence the maintenance of spec...
متن کامل