Molecular genetic diversity and differentiation of Nile tilapia (Oreochromis niloticus, L. 1758) in East African natural and stocked populations.

ABSTRACT:

Background

The need for enhancing the productivity of fisheries in Africa triggered the introduction of non-native fish, causing dramatic changes to local species. In East Africa, the extensive translocation of Nile tilapia (Oreochromis niloticus) is one of the major factors in this respect. Using 40 microsatellite loci with SSR-GBS techniques, we amplified a total of 664 individuals to investigate the genetic structure of O. niloticus from East Africa in comparison to Ethiopian and Burkina Faso populations.

Results

All three African regions were characterized by independent gene-pools, however, the Ethiopian population from Lake Tana was genetically more divergent (F_st = 2.1) than expected suggesting that it might be a different sub-species. In East Africa, the g

SUBMITTER: Tibihika PD 

PROVIDER: S-EPMC6990601 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature