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Genetic diversity and population structure of cavy (Cavia porcellus L) in three agro ecological zones of Côte d'Ivoire

Journal: International Journal of Agronomy and Agricultural Research (IJAAR) (Vol.6, No. 3)

Publication Date:

Authors : ;

Page : 27-35

Keywords : Cavy; genetic diversity; microsatellites.;

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To investigate the genetic diversity and population structure of cavies (Cavia porcellus (Linnaeus, 1758) from three agro ecological zones (North, central, and South) of Ivory Coast, 14 microsatellites markers were used. A total of 131 cavies were genotyped. The measure of population diversity for the three populations revealed a mean allele frequency of 6.0, 5.5 and 6.429 (P<0,05) for the north, central and south populations respectively. The observed heterozygosity (Ho) was 0.511 ± 0.66, 0.505 ± 0.55 and 0.567 ± 0.064 (p < 0,05) for the north, central and south populations and in all cases lower than the expected heterozygosity (He) (0.577 ± 0.059 , 0.634 ± 0.051, 0.645 ± 0.052) respectively. This indicates low heterozygosity across the three populations in the whole population., The population specific inbreeding coefficients (FSt) were 0.1695, 0.2768 and 0.2245 (P < 0,01) for the three separate populations and a mean of 0.2257.There were no clear differences in the population structure with only 2.59 % variation among the three populations and 21.99 % variation among individuals within a population. There were high rates of inbreeding in all the three populations (mean 0.2257 (p < 0,01). Therefore the tree population would mix. It is difficult to select non-related animals and thus control inbreeding in the target populations or selection for particular traits of interest.

Last modified: 2019-05-07 19:40:09