Variación estacional de la composición proximal del mejillón Tagelus peruvianus (Bivalvia: Solecurtidae) del Golfo de Nicoya, Puntarenas, Costa Rica
Fecha
2011-12
Autores
Fonseca Rodríguez , Cristian
Marín, Carolina
Chavarría-Solera, Fabián
Cruz, Rafael A.
Toledo Agüero, Pedro
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Universidad de Costa Rica (Costa Rica)
Resumen
Los bivalvos marinos son una fuente de alimento muy importante para el consumo humano, y están ganando interés especies que no han tenido un uso tradicional como recurso pesquero. Se estudió la variación estacional en la composición próxima, índice de condición y contenido energético o calórico del mejillón Tagelus peruvianus en el Golfo de Nicoya, Puntarenas, Costa Rica. Desde noviembre de 2007 a octubre de 2008 se recolectaron un total de 35 a 40 ejemplares por mes. Se determinó la composición proximal utilizando los métodos AOAC. Los resultados mostraron que el índice de condición durante diciembre, enero y mayo disminuyó, indicativo de dos períodos de desove y una fase de descanso gonadal. Los tejidos blandos se caracterizaron respectivamente por proteínas (61,9 ± 4,3%), carbohidratos (15,7 ± 2,4%), cenizas (14,0 ± 1,9%) y lípidos (8,5 ± 1,7%). El contenido calórico promedio fue de 5,0±0,1kcal/g. Los resultados mostraron que la disminución en el porcentaje de proteínas y grasas, y en el contenido calórico, se produjo durante las temporadas de desove. Sugerimos que T. peruvianus tiene un valor nutricional óptimo para el consumo humano debido al contenido bajo en grasas y moderado de proteínas.
Seasonal variation in proximate composition of mussels Tagelus peruvianus (Bivalvia: Solecurtidae) from the Gulf of Nicoya, Puntarenas, Costa Rica. Marine bivalves are a very important food source for human consumption, and species that has not been of traditional use as a fishery resource are gain-ing interest.Seasonal variation in proximate composition, condition index and energy or caloric content of the mussel Tagelus peruvianus were studied in the Gulf of Nicoya, Puntarenas, Costa Rica. From November 2007 to October 2008, a total of 35 to 40 specimens per month were collected. The proximate composition using the AOAC methods was determined. Results showed that the condition index during December, January and May decreased, indicative of two spawning periods and one gonadal resting phase. Soft tissues were respectively characterized by protein (61.9±4.3%), carbohydrates (15.7±2.4%), ash (14.0±1.9%) and lipids (8.5±1.7%). The average caloric content was 5.0±0.1kcal/g. The results showed that the decrease in protein and fat percentage, and calories content, occurred during the spawning seasons. We suggest that T. peruvianus has an optimal nutri-tional value for human consumption because of the low-fat and moderate protein content.
Seasonal variation in proximate composition of mussels Tagelus peruvianus (Bivalvia: Solecurtidae) from the Gulf of Nicoya, Puntarenas, Costa Rica. Marine bivalves are a very important food source for human consumption, and species that has not been of traditional use as a fishery resource are gain-ing interest.Seasonal variation in proximate composition, condition index and energy or caloric content of the mussel Tagelus peruvianus were studied in the Gulf of Nicoya, Puntarenas, Costa Rica. From November 2007 to October 2008, a total of 35 to 40 specimens per month were collected. The proximate composition using the AOAC methods was determined. Results showed that the condition index during December, January and May decreased, indicative of two spawning periods and one gonadal resting phase. Soft tissues were respectively characterized by protein (61.9±4.3%), carbohydrates (15.7±2.4%), ash (14.0±1.9%) and lipids (8.5±1.7%). The average caloric content was 5.0±0.1kcal/g. The results showed that the decrease in protein and fat percentage, and calories content, occurred during the spawning seasons. We suggest that T. peruvianus has an optimal nutri-tional value for human consumption because of the low-fat and moderate protein content.
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MEJILLÓN, PESCA ARTESANAL, CONSUMPTION, PROTEINS, BIVALVOS, GOLFO DE NICOYA (COSTA RICA)