Adoumandjali2020

Référence

Adoumandjali, G. (2020) Variabilité génétique, moléculaire et quantitative du Tilapia du Nil (Oreochromis niloticus, Linnaeus, 1758) dans le bassin du Congo. Thèse de doctorat, Université Laval. (URL )

Résumé

Strict heritability (h²) of body mass was shown to be high (0.67 ± 0.30), moderate for morphology (0.30 ± 0.12), low for standard length (0.10 ± 0.10), and condition factor (0.03 ± 0.04). Heritability in the broad sense (H²) ranged from 0.22 ± 0.13 to 0.93 ± 0.10 for all traits. The genetic correlation between body mass and morphology (0.91) was high but average between standard length and morphology (0.21) and between body weight and standard length (0.20). The phenotypic correlation between body mass and standard length (0.95) was high while it was average between standard length and morphology (0.21) as well as between body mass and morphology (0.27). In view of these results, it can be concluded that there is a genetic structure that can allow sustainable management and use of the Nile tilapia species in the context of fish farming and fish seed production. The existence of a good genetic diversity associated with the heritability of growth traits is promising for the development of genetic improvement programs of the of Nile tilapia species in the Congo Basin sub region

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@PHDTHESIS { Adoumandjali2020,
    TITLE = { Variabilité génétique, moléculaire et quantitative du Tilapia du Nil (Oreochromis niloticus, Linnaeus, 1758) dans le bassin du Congo },
    AUTHOR = { Adoumandjali, G. },
    SCHOOL = { Université Laval },
    YEAR = { 2020 },
    NOTE = { CEFTMS, Bernatchez, L. and Khasa, D.P. },
    ABSTRACT = { Strict heritability (h²) of body mass was shown to be high (0.67 ± 0.30), moderate for morphology (0.30 ± 0.12), low for standard length (0.10 ± 0.10), and condition factor (0.03 ± 0.04). Heritability in the broad sense (H²) ranged from 0.22 ± 0.13 to 0.93 ± 0.10 for all traits. The genetic correlation between body mass and morphology (0.91) was high but average between standard length and morphology (0.21) and between body weight and standard length (0.20). The phenotypic correlation between body mass and standard length (0.95) was high while it was average between standard length and morphology (0.21) as well as between body mass and morphology (0.27). In view of these results, it can be concluded that there is a genetic structure that can allow sustainable management and use of the Nile tilapia species in the context of fish farming and fish seed production. The existence of a good genetic diversity associated with the heritability of growth traits is promising for the development of genetic improvement programs of the of Nile tilapia species in the Congo Basin sub region },
    URL = { https://corpus.ulaval.ca/jspui/handle/20.500.11794/38116 },
    TIMESTAMP = { 2020-09-09 },
}

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