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

  • Descripción del artículo
  • 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; h...

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Main Author: Salirrosas, David
Other Authors: Leon, Julio, Arqueros-Avalos, Monica, Sanchez-Tuesta, Linda, Rabanal, Fernanda, Prieto, Zulita
Format: Artículo
Language: eng
Published: 2017
Subjects:
Online Access: http://revistas.unitru.edu.pe/index.php/scientiaagrop/article/view/1638
Summary: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.

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