Comparison of the growth of males and females of tilapia Oreochromis Niloticus cultured in cages

  • Carlos Alvarado-Ruiz Instituto Nacional de Aprendizaje INA Núcleo Náutico Pesquero
Keywords: undifferentiated sex, sex reversal, larvae, cages.


With the purpose of evaluating productive performance and potential weight gain capacity of snapper O. Niloticus without reversing, we evaluated the growth of males and females raised in floating cages in captivity grouped by gender. The experiment was conducted for a term of 150 days.  We used a simple 4 836 alevins of 26.2±19.7g, fish that were nourished until they visibly reached sexual differentiation to 119.3±56.5 g to be separated by sex and nourished in floating cages to a final average weight of 387.0±128.9g (harvest)to determine differences in growth. The weight distribution of the undefined gender sample showed a decrease in the coefficient of variation (CV) of 75.13% to 31.49 and 30.22 for males and females respectively. This indicates that the distribution of sizes of the samples tended to become normal during the cycle of harvest. Significant differences (P=0.05) for the weight of harvest 429.2±135.1g and 339.65±102.64 g.   For the growth rate 2.74±0.86g day y 2.18±0.68 g day were determined between males and females respectively. The standard error of the estimation of the difference of average weight between males and females was 89.62±7.23g for an accuracy level of 95%. Males displayed  better growth rate and weight gain for harvest.

Author Biography

Carlos Alvarado-Ruiz, Instituto Nacional de Aprendizaje INA Núcleo Náutico Pesquero


Alicorp, S.A. (2004). Manual de crianza de tilapia. Lima, Perú. Recuperado de

Bhatta, S., Iwai, T., Miura, T., Higuchi, M., Maugar, G., & Miura, C. (2012). Differences between male and female growth and sexual maturation in tilapia (Oreochromis mossambicus) [Las diferencias entre macho y hembra en el crecimiento y la maduración sexual en tilapia (Oreochromis mossambicus)]. Journal of Science, Engineering and Technology, Kathmandu University, 8(2), 57-65.

Bhujel, R. C. (2000). A review of strategies for the management of Nile tilapia (Oreochromis niloticus) broodfish in seed production systems, especially hapa-based systems [Una revisión de las estrategias para el manejo de la tilapia del Nilo (Oreochromis niloticus) reproductores en sistemas de producción de semillas, sistemas especialmente hapa-basado]. Aquaculture 181, 37-59.

Buysee, W., Stern, R., Coe, R., & Matere, C. (2008). GenStat Discovery Edition 3 [Genstat Descubrimiento Edición 3], 2000. Edición para uso cotidiano. (Trad. José Rodolfo García Nava, Victorino Morales Ramos, Martha Elva Ramírez Guzmán) Nairobi: ICRAF.

Bwanika, G. N., Murie, D. J., & Chapman, L. J. (2007). Comparative age and growth of Nile tilapia (Oreochromis niloticus L.) in lakes Nabugabo and Wamala, Uganda [comparativo entre edad y el crecimiento de la tilapia del Nilo (Oreochromis niloticus L.) en los lagos Nabugabo y Wamala, Uganda]. Hydrobiologia 589(1), 287-301.

Chakraborty, S. B., & Banerjee, S. (2010). Comparative growth performance of mixed-sex and monosex Nile Tilapia population in freshwater cage culture system under Indian perspective [El crecimiento comparativo de sexos-mistos y mono-sexos en la población de tilapia del Nilo en agua dulce sistema de cultivo en jaulas en perspectiva de la India]. International Journal of Biology, 2(1), 44-50.

Dunham, R. A., Majumdar, K., Hallerman, E., Bartley, D., Mair, D., Hulata, D., Pongthana, L.N., Bakos, J., Penman, D., Gupta, M., Rothlisberg, P., & Hoerstgen, G.S. (2000). Review of the Status of Aquaculture Genetics [Revisión de la Condición de la Acuicultura Genética] . In: Aquaculture in the Third Millennium Technical Proceedings of Conference on Aquaculture Bangkok, Thailand, FAO, Roma.

Gjedrem, T. (2005). Selection and Breeding Programs in Aquaculture. [Programas de selección y mejora genética en acuicultura]. Netherlands: Springer.

Hopkins, K. D. (1992). Reporting Fish Growth: A review of the Basics Journal of the World[Informes crecimiento de los peces: Una revisión de la literatura básica Mundial. Aquaculture Society, 23(3), 173-179.

Mair, G. C. (1995). Genetic manipulation for improved tilapia (GMIT) Technology Adaptation and Development I. [La manipulación genética de la tilapia mejorada (GMIT) Tecnología de Adaptación y Desarrollo I]. ODA Fish Genetic Program (R5068A), Thailand.

Nunes, A. J. (2010). Tilapia Cage Farm Management in Brazil. [Administración de granjas de tilapia en Brasil]. Global aquaculture advocate. Descargado de

Ridha, M. T. (2011). Evaluation of monosex culture of GIFT and non-improved strain of Nile Tilapia Oreochromis niloticus in recirculating tank[Evaluación de la cultura monosex de GIFT y de cepa no mejorada de tilapia del Nilo Oreochromis niloticus en el tanque de recirculación]. International Aquatic Research 3, 189-195.

Ridha, M. T., & Cruz, E.M. (1998). Observations on the seed production of the tilapia Oreochromis spilurus (Gunter) under different spawning condition and with different sex ratios. [Observaciones sobre la producción de la tilapia Oreochromis spilurus (Gunter) bajo diferentes condiciones de desove y con distintas relaciones sexuales.]. Asian Fisheries Science, 10, 201-210.

Saavedra, M. M. (2006). Manejo del cultivo de tilapia. Descargado de

Salvador, F. M., & Gallardo, P. (2003). Análisis exploratorio de datos. Recuperado de

Schmittou, H. (1991). Guidelines for Raising Principally Omnivorous Carps, Catfishes and Tilapias in Cages Suspended in Freshwater Ponds, Lakes and Reservoirs. [Directrices para Elevar Principalmente Omnívoro carpas, bagres y tilapias, en jaulas suspendidas en agua dulce Estanques, lagos y embalses]. Proceedings of the People's Republic of China Aquaculture and Feed Workshop [Taller de la República de China sobre Acuicultura y alimentos], D. Akiyama, (Ed.). Singapore: American Soybean Association.

Sule, O. D. (2004). Growth performance of mono-sex and mixed sex population of Oreochromis niloticus fed similar diet. [Los resultados de crecimiento de mono-sexo y población de ambos sexos de Oreochromis niloticus alimentada con dieta similar.]. Animal Research International, 1(2), 106-109.

Toguyeni, A., Baroiller, J.F., Fostier, A., Le Bail, P.Y., Khün, E.R., Mol, K.A., & Fauconneau, B. (1996). Consequences of food restriction on shortterm growth variation and plasma circulating hormones in Oreochromis niloticus in relation to sex. [Consecuencias de la restricción de alimentos en la variación del crecimiento a corto plazo y el plasma que circula hormonas en Oreochromis niloticus en relación al sexo.]. General and Comparative Endocrinology, 103, 167-175

How to Cite
Alvarado-Ruiz, C. (2015). Comparison of the growth of males and females of tilapia Oreochromis Niloticus cultured in cages. Uniciencia, 29(1), 1-15.
Original scientific papers (evaluated by academic peers)