Aquaculture and fisheries biotechnology : genetic approaches - download pdf or read online

By Rex A. Dunham

ISBN-10: 1845936515

ISBN-13: 9781845936518

The expansion cost of globally aquaculture has been sustained and swift, and the explosion of study in genetic biotechnology has made major impression on aquaculture and fisheries, even supposing capability for far larger growth exists. Aquaculture and Fisheries Biotechnology covers themes necessary to the learn of fish genetics, together with qualitative and quantitative qualities, crossbreeding, inbreeding, genetic flow, hybridization, choice courses, polyploidy, genomics and cloning. This absolutely up to date moment variation additionally addresses environmental hazard, meals security and executive law of transgenic aquatic organisms, advertisement functions of fish biotechnology and destiny concerns in fish genetics. it truly is crucial analyzing for researchers and scholars in fish genetics and fish molecular genetics.

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Each inbred family is matched with its own control, reducing error of measurement of inbreeding depression. Inbreeding depression is measured for each family, and each family will respond variably as each has its own genetic background and a different level of actual absolute starting homozygosity. Inbreeding depression for the population is the mean inbreeding depression of all of the families in the evaluation. Even in a small research population, each family has an internal control maximizing accuracy.

Both s and N alleles have adverse pleiotropic effects on several traits, such as growth, survival, tolerance of poor water quality, ability to regenerate fins, gill-raker number, haemoglobin per cent and haematocrit. Deformities When deformities are observed, fish culturists often assume that the deformities have a genetic basis and are likely increasing because of inbreeding in the population. However, these assumptions are usually Basic Genetics, Qualitative Traits and Selection for Qualitative Traits false.

06. To reach this level of effectiveness or this level of accuracy we must test four progeny from each individual. If we must use a heterozygous tester, that number of progeny evaluated more than doubles. To ensure an error rate of only 6%, we have to evaluate ten progeny for every individual. Again these are mathematical probabilities, so if we are fortunate we will detect the carriers with fewer progeny; or if unlucky, 6% of the time the predicted needed number of tested progeny will be insufficient.

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Aquaculture and fisheries biotechnology : genetic approaches by Rex A. Dunham


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