Association of genetic markers with sex determination in Thai red tilapia

Abstract

The objectives of this study were to verify the polymorphism on sex-linked marker loci and to assess their associations with phenotypic sex characteristics in red tilapia. Four sex-linked genetic markers of Amh, SCAR4, SCAR5, and Oni3161 were genotyped in the Thai red tilapia population. The Amh marker was significantly associated with the phenotypic sex of red tilapia with an accuracy of 46.2%. No significant association of SCAR4, SCAR5, and Oni3161 marker polymorphisms with phenotypic sex characteristics was observed in this study. However, the combinations of these two, three, and four markers were increasingly associated with phenotypic sex characteristics for red tilapia with an accuracy of 62.8, 68.4, and 72.4%, respectively. These results indicate that these combined genetic markers were associated with the phenotypic sex of red tilapias. These findings confirmed the importance of these genetic markers as candidate markers for sex determination in the Thai red tilapia population.

Sex discrimination based on morphological traits in Mystus mysticetus Roberts, 1992

“…The fish samples obtained were identified based on morphological characteristics from the description of Tran et al (2013). After that, they were Naraballobh et al (2021) use genetic marker to confirm tilapia sex, but it Vet Integr Sci Vet Integr Sci Phan et al, Vet Integr Sci. 2022;20(3): 659 -667 transported to Can Tho University for research in the laboratory.…”

Isolation and Identification of Aspergillus sp. in Tilapia (Oreochromis sp.) Sold for Consumption in Bogor

“…The operculum that covered the gills was lifted, and a sterile swab was rolled around the gills following the procedures carried out by previous studies (Clinton et al, 2021;Salawudeen et al, 2017;Touhali, 2018). Skin samples were obtained by carefully swabbing the skin of each fish where skin and fin lesions occurred and throughout the body using a sterile cotton swab (Melaku et al, 2017;Roslan et al, 2023). The swabbing direction is particularly crucial when dealing with fish that have scales (Breacker et al, 2017).…”

“…is a genus of fish that is primarily cultured and has an essential economic impact globally. More than 100 tilapia species have been identified (Naraballobh et al, 2021). Tilapia is a vital source of protein in many developing countries.…”