SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED
Successful development of YY technology depends not only in the identification of YY males (YYM), but also on the evaluation of the percentage of males obtained from them. The progeny of selected potential YYM was evaluated individually in order to determine its genetic status. In total, 12 potentia...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Yucatán
2019-03-01
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| Series: | Tropical and Subtropical Agroecosystems |
| Subjects: | |
| Online Access: | https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2541 |
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| author | J. P. Alcántar Vázquez L. Pozos Dauzon D. Calzada Ruiz C. A. Álvarez González A. Pérez Carbajal R. López Hinojosa C. Antonio Estrada R. Moreno de la Torre |
| author_facet | J. P. Alcántar Vázquez L. Pozos Dauzon D. Calzada Ruiz C. A. Álvarez González A. Pérez Carbajal R. López Hinojosa C. Antonio Estrada R. Moreno de la Torre |
| author_sort | J. P. Alcántar Vázquez |
| collection | DOAJ |
| description | Successful development of YY technology depends not only in the identification of YY males (YYM), but also on the evaluation of the percentage of males obtained from them. The progeny of selected potential YYM was evaluated individually in order to determine its genetic status. In total, 12 potential YYM and 12 normal females (XX) were selected. Potential YYM were selected taking into account external color, shape of the genital papillae and size. After individual crossing, a confirmed YYM was crossed consecutively with three XX females and three XY females to further assess the variation in the percentage of males obtained. A significant deviation from the 1:1 sex ratio expected for normal males (XY) was observed for ten of the twelve potential YYM that were evaluated, confirming YY status. Variation ranking between 88 to 93% in the percentage of males was observed in crosses between YYM and XX females. Finally, failure to obtain only 100% males was observed in crosses between YYM and XY females. This variation could be the result of the interaction of minor genetic parental factors or the water temperature during fry period. External parameter used for selection of potential YYM need to be optimized in further work. |
| first_indexed | 2024-12-13T11:03:20Z |
| format | Article |
| id | doaj.art-f4634247fc9543c99a1c490a49338998 |
| institution | Directory Open Access Journal |
| issn | 1870-0462 |
| language | English |
| last_indexed | 2024-12-13T11:03:20Z |
| publishDate | 2019-03-01 |
| publisher | Universidad Autónoma de Yucatán |
| record_format | Article |
| series | Tropical and Subtropical Agroecosystems |
| spelling | doaj.art-f4634247fc9543c99a1c490a493389982022-12-21T23:49:12ZengUniversidad Autónoma de YucatánTropical and Subtropical Agroecosystems1870-04622019-03-01221849SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINEDJ. P. Alcántar Vázquez0L. Pozos Dauzon1D. Calzada Ruiz2C. A. Álvarez González3A. Pérez Carbajal4R. López Hinojosa5C. Antonio Estrada6R. Moreno de la Torre7Universidad del Papaloapan, campus Loma Bonita.Granja Unidad de Producción del Tesechoacan.Universidad Juárez Autónoma de TabascoUniversidad Juárez Autónoma de TabascoUniversidad del PapaloapanUniversidad del PapaloapanUniversidad del PapaloapanUniversidad del PapaloapanSuccessful development of YY technology depends not only in the identification of YY males (YYM), but also on the evaluation of the percentage of males obtained from them. The progeny of selected potential YYM was evaluated individually in order to determine its genetic status. In total, 12 potential YYM and 12 normal females (XX) were selected. Potential YYM were selected taking into account external color, shape of the genital papillae and size. After individual crossing, a confirmed YYM was crossed consecutively with three XX females and three XY females to further assess the variation in the percentage of males obtained. A significant deviation from the 1:1 sex ratio expected for normal males (XY) was observed for ten of the twelve potential YYM that were evaluated, confirming YY status. Variation ranking between 88 to 93% in the percentage of males was observed in crosses between YYM and XX females. Finally, failure to obtain only 100% males was observed in crosses between YYM and XY females. This variation could be the result of the interaction of minor genetic parental factors or the water temperature during fry period. External parameter used for selection of potential YYM need to be optimized in further work.https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2541nile tilapiaprogeny testxy femalesyy males |
| spellingShingle | J. P. Alcántar Vázquez L. Pozos Dauzon D. Calzada Ruiz C. A. Álvarez González A. Pérez Carbajal R. López Hinojosa C. Antonio Estrada R. Moreno de la Torre SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED Tropical and Subtropical Agroecosystems nile tilapia progeny test xy females yy males |
| title | SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED |
| title_full | SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED |
| title_fullStr | SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED |
| title_full_unstemmed | SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED |
| title_short | SELECTION OF POTENTIAL YY MALES OF NILE TILAPIA Oreochromis niloticus (LINNAEUS, 1758) AND EVALUATION OF THE PERCENTAGE OF MALES OBTAINED |
| title_sort | selection of potential yy males of nile tilapia oreochromis niloticus linnaeus 1758 and evaluation of the percentage of males obtained |
| topic | nile tilapia progeny test xy females yy males |
| url | https://www.revista.ccba.uady.mx/ojs/index.php/TSA/article/view/2541 |
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