Genetic diversity of divergent redclaw crayfish Cherax quadricarinatus (Von Martens, 1868) populations evaluated to initiate a breeding program in Mexico

Adriana Max-Aguilar, Humberto Villarreal, Ignacio Leyva-Valencia, Rocío Valencia-Valdez, José Naranjo-Páramo, Mayra Vargas-Mendieta, Alejandra Villarreal-García, Pedro Cruz-Hernández

Submited: 2020-08-17 18:28:57 | Published: 2021-05-03 17:51:36

DOI: https://doi.org/10.3856/vol49-issue2-fulltext-2630

Abstract


Cherax quadricarinatus is a decapod crustacean of interest to the aquaculture industry. In Mexico, a significant effort has been made to improve biological requirements, but the genetic characteristics are unknown. We examined the genetic diversity and differentiation in four populations in Mexico (three commercial farms and one feral population), as well as one research line from Argentina, used as reference. To initiate a founder stock in a genetic improvement program, we analyzed five microsatellite markers. The genetic diversity in terms of the number of alleles was low to moderate (2.8-6.2) in Mexican populations than the Argentinean sample (8.8). A pairwise Wright's Fst analysis showed that all populations were significantly different (P < 0.5). Cross-breeding organisms from a different population are suggested to increase genetic variability before initiating a founder stock with higher genetic variation.

Max-Aguilar A, Villarreal H, Leyva-Valencia I, Valencia-Valdez R, Naranjo-Páramo J, Vargas-Mendieta M, Villarreal-García A, Cruz-Hernández P. Genetic diversity of divergent redclaw crayfish Cherax quadricarinatus (Von Martens, 1868) populations evaluated to initiate a breeding program in Mexico. Lat. Am. J. Aquat. Res.. 2021;49(2): 272-279. Available from: doi:10.3856/vol49-issue2-fulltext-2630 [Accessed 23 Jun. 2021].
Max-Aguilar, A., Villarreal, H., Leyva-Valencia, I., Valencia-Valdez, R., Naranjo-Páramo, J., Vargas-Mendieta, M., Villarreal-García, A., & Cruz-Hernández, P. (2021). Genetic diversity of divergent redclaw crayfish Cherax quadricarinatus (Von Martens, 1868) populations evaluated to initiate a breeding program in Mexico. Latin American Journal of Aquatic Research, 49(2), 272-279. doi:http://dx.doi.org/10.3856/vol49-issue2-fulltext-2630