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Showing 1 to 20 of 173 for “"inbreeding"”.
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Gene Effects on Inbreeding Depression in Autotetraploid Maize
Made available in DSpace on 2014-12-12T00:17:48Z (GMT). No. of bitstreams: 1 7212353.pdf: 2520582 bytes, checksum: f8040428caea0f325b453513a20edd35 (MD5) Previous issue date: 1971
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Causes and consequences of inbreeding in the banded mongoose
Inbreeding and inbreeding depression have been studied since the days of Darwin and yet we are still making important discoveries today. These discoveries can inform conservation practices as inbreeding depression can contribute to population extinction. Inbreeding is also an important subject in …
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Inbreeding Depression in the Partially Selfing Perennial, Ruellia Humilis
… field population. No evidence was found for inbreeding depression in seedling establishment or survivorship. However, among 502 established seedlings, mean biomass accumulation during the first year of growth was 10% lower in selfed offspring than in outcrossed offspring. No maternal effects …
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Effects of Inbreeding on Endangered Red Wolves (Canis rufus)
Inbreeding depression, the reduction in offspring fitness caused by mating among close relatives, is widespread in small populations and a major concern in conservation biology because it can affect population persistence. The negative effects of inbreeding results in the evolution of inbreeding …
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Female Dispersal and Inbreeding in the Red-cockaded Woodpecker
… of the relationship between dispersal and inbreeding, I studied three aspects of the biology of the red-cockaded woodpecker: dispersal of breeding females; the costs, benefits, and frequency of inbreeding; and the effect of inbreeding on natal dispersal. Dispersal of breeding female …
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The effect of inbreeding and hybrid vigor in Drosophila melanogaster
Thesis (M.A.)--University of Kansas, Zoology, 1928.
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Analysis of Inbreeding in a Closed Population of Crossbred Sheep
Genetic diversity and the effect of lamb and dam inbreeding on multiple traits were analyzed in an 11-yr closed population of sheep established in 1983 and remained closed after 1987, with 50% Dorset, 25% Rambouillet, and 25% Finnsheep breeding to determine selection response for spring fertility. …
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The Effect of Inbreeding on Lifetime Performance of Dairy Cattle
… an 84 month herdlife opportunity. The effect of inbreeding was analyzed using both a fixed and animal model, with little difference in results. Inbreeding depressed RNIOC by $12.69 in a fluid market and $11.53 in a manufacturing market per 1% increase in inbreeding. Addition of somatic cell …
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Inbreeding in Rainbow Trout (Salmo gairdneri): Analysis of Lethal Temperature Tolerence
<p>Inbreeding in rainbow trout (Salmo gairdneri) was evaluated in relation to an altered environment (upper lethal temperature 29 C), at four levels of inbreeding. At each level of inbreeding mean time to death for inbred, female-outbred half-sib, male-outbred half-sib and outbred families were …
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Inbreeding Depression and Competition in the square-stemmed monkey-flower (Mimulus ringens)
… with reduced fitness, a phenomenon known as inbreeding depression. The magnitude of inbreeding depression can play an important role in determining the overall fitness, and persistence, of populations, and is often considered one of the key factors driving the evolution of mating systems and …
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Inbreeding depression and segregation distortion in Chinook salmon: Conservation implications of genetic load
Strong evidence that shows inbreeding in many plants and animals can lead to detrimental effects at the level of the organism as well as the population. Inbreeding and its effects have been the focus of much attention in terms of conservation and captive rearing and breeding programs for many …
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Inbreeding, immunity and male sexual signaling in the black field cricket Teleogryllus commodus
… reduced fitness) and outbred males (Chapter 2). Inbreeding did not affect lysozyme activity, but caused a significant increase in haemocyte counts. Therefore it is not always the fittest individuals that have the highest measured immune function. I then investigated the effect of inbreeding on …
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Inbreeding, immunity and male sexual signaling in the black field cricket Teleogryllus commodus
… reduced fitness) and outbred males (Chapter 2). Inbreeding did not affect lysozyme activity, but caused a significant increase in haemocyte counts. Therefore it is not always the fittest individuals that have the highest measured immune function. I then investigated the effect of inbreeding on …
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Use of RFLP markers in maize as an aid in selection during inbreeding
Molecular markers can be used to detect alleles in donor genetic material for improvement of existing cultivars or hybrids. Restriction fragment length polymorphisms (RFLPs) were used as markers to detect favorable quantitative trait alleles in the maize (Zea mays L.) population BS11(FR)C7 which …
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Effects of inbreeding and estimation of genetic progress upon preweaning traits in beef cattle
… 1960) were used to study the effect of inbreeding on birth and weaning weights, ADG birth to weaning and type score at weaning, and estimate genetic progress from selection in each line of each breed. Inbreeding effects were linear and quadratic regressions of the traits mentioned on …
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Some Effects of Inbreeding With Selection on Milk Yield and Growth in Milk Goats
Made available in DSpace on 2014-12-05T23:07:54Z (GMT). No. of bitstreams: 1 5900552.pdf: 3406105 bytes, checksum: 0d70b09c278f8f571afe1b05869712ff (MD5) Previous issue date: 1958
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Utility of inbreeding coefficient and sire as predictors for osteochondrosis risk in Standardbred horses
… effects on risk of OC have been reported, but inbreeding coefficient has not been examined as predictor for genetic risk of disease. We investigated this in a cohort of 910 Standardbred yearlings fluoroscopically screened for osteochondral fragments. Controls (n = 545) were defined as horses …
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