| Autor: |
Lutz, Ítalo, Martins, Kely, Cardoso, Bruna, Miranda, Aline, Costa, Jorge Luis, Silva, Ingrid, Martins, Thais, Matos, Suane, Santana, Paula, Mendes, Carla, Santa-Brígida, Nicolly, Sousa, Jefferson, Miranda, Josy, Barbosa, Andressa, da Silva, Raimundo, Muhala, Valdemiro, Sampaio, Iracilda, Vallinoto, Marcelo, Evangelista-Gomes, Grazielle |
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| Zdroj: |
Environmental Biology of Fishes; Oct2024, Vol. 107 Issue 10, p1121-1135, 15p |
| Abstrakt: |
Genetic connectivity and historical population expansion are characteristics that have largely been studied and observed in several members of the Lutjanidae family throughout the Western South Atlantic, particularly in Brazilian waters. In this study, the population genetic structure of Lutjanus jocu was investigated using four genomic regions: two from mitochondrial DNA (Control Region and Cytochrome B) and two nuclear genes (Delta 6 desaturase—intron 8 and Ribosomal Protein S7—intron 1), in 144 specimens distributed in six locations on the Atlantic coast of Brazil. The results revealed high levels of genetic diversity for both mtDNA and nuDNA markers, and intense gene flow, indicating, consistent with other studies, that this species is represented by a single genetic stock along the Brazilian coast. This is likely due to the high dispersal capacity of L. jocu larvae, driven by the main equatorial currents, as well as biological and ecological factors, contributing to a genetically homogeneous population. Historical demographic analysis and neutrality tests suggest that the species experienced population expansion, possibly during the Pleistocene. Information regarding the genetic structure of populations is extremely important, especially for species of high economic and fishing importance, and can be very useful in guiding stock management and management measures. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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