SNP markers for the genetic characterization of Mexican shrimp broodstocks |
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| Authors: | Ricardo Perez-Enriquez Diego Robledo Ross D. Houston Raúl Llera-Herrera |
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| Affiliation: | 1. Aquaculture Genetics & Breeding Lab, Centro de Investigaciones Biológicas del Noroeste, S.C., La Paz, Baja California Sur 23096, Mexico;2. The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Midlothian EH25 9RG, UK;3. CONACyT - Centro de Investigaciones en Alimentación y Desarrollo A.C. Sábalo-Cerritos s.n. Mazatlán, Sinaloa 82112, Mexico;4. Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, PO Box 811, CP 82040 Mazatlán, Sinaloa, Mexico |
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| Abstract: | Selective breeding of shrimp has major potential to enhance production traits, including growth and disease resistance. Genetic characterization of broodstock populations is a key element of breeding programs, as it enables decisions on inbreeding restrictions, family structure, and the potential use of genomic selection. Single Nucleotide Polymorphisms (SNPs) are suitable genetic markers for this purpose. A set of SNPs was developed to characterize commercial breeding stocks in Mexico. Individuals from local and imported lines were selected for sequencing using the nextRAD technique, resulting in the identification of 2619 SNPs. Genetic structure analysis showed three to five genetic groups of Ecuadorian and Mexican origins. A subset of 1231 SNPs has potential for stock identification and management. Further, three SNPs were identified as candidate sex-linked markers. The role of SNPs possibly associated with genes related to traits of importance to shrimp farming, such as growth and immune response, should be further investigated. |
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| Keywords: | Single Nucleotide Polymorphisms Stock identification Genetic diversity Selective breeding Disease resistance |
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