Growth and economic performance of diploid and triploid Pacific oysters Crassostrea gigas cultivated in three lagoons of the Gulf of California
2017
Villanueva-Fonseca, Brenda Paulina(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa ,Universidad de Occidente) | Góngora-Gómez, Andrés Martín(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa) | Muñoz-Sevilla, Norma Patricia(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación y Estudios sobre Medio Ambiente y Desarrollo) | Domínguez-Orozco, Ana Laura(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa) | Hernández-Sepúlveda, Juan Antonio(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa) | García-Ulloa, Manuel(Instituto Politécnico Nacional Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa) | Ponce-Palafox, Jesús T(Universidad Autónoma de Nayarit Escuela Nacional de Ingeniería Pesquera Laboratorio de Bioingeniería Costera)
Diploid and triploid Crassostrea gigas oysters were cultivated at three farms (Guasave, Navolato and Ahome) in Sinaloa, Mexico, to evaluate their growth and economic performances. Growth rate and survival of oysters were compared in long-line cultivation and were mostly affected by water parameters rather than ploidy or their interaction. The highest growth rates for shell length (8.01 mm month-1) and body weight (9.08 g month-1) were obtained for the Ahome/triploid group. Survival differed significantly from 98.6% for the Guasave/triploids to 76.7% for the Ahome/diploids. After the first production cycle, more than 80% of production costs represent the purchase of cultivation equipment and salaries contributed with around 9%. The Guasave farm produced the highest profits (US$8,053.71 diploids, US$8,182.19 triploids). Use of diploids starting the production cycle on October-November to avoid mortality and improve final profit is recommended.
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