YY super males have better spermatic quality than XY males in red tilapia Oreochromis niloticus

  • Salirrosas D
  • Leon J
  • Arqueros-Avalos M
  • et al.
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Abstract

The influence of sex-related chromosomal arrangement in an YY and XY population of Oreochromis niloticus males was investigated in this study. A better spermatic mobility, motility, viability, confluence and less abnormality were found in double Y-chromosome males (YY-males), compared to XY-males; however, this better spermatic quality did not correlate with the body weight of individuals which was significantly better in XY-males. This study establishes the influence of YY-related sequences over spermatic quality and indicates the usefulness of the YY technology as a strategy to obtain better fish breeders and genetically male individuals for a tilapia farming program. Keywords:

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Salirrosas, D., Leon, J., Arqueros-Avalos, M., Sanchez-Tuesta, L., Rabanal, F., & Prieto, Z. (2017). YY super males have better spermatic quality than XY males in red tilapia Oreochromis niloticus. Scientia Agropecuaria, 8(4), 349–355. https://doi.org/10.17268/sci.agropecu.2017.04.06

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