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Variación estacional de la composición proximal del mejillón Tagelus peruvianus (Bivalvia: Solecurtidae) del Golfo de Nicoya, Puntarenas, Costa Rica

Authors: Fonseca Rodríguez, Cristian; Marín Vindas, Carolina; Chavarría Solera, Fabián; Cruz Soto, Rafael; Toledo Agüero, Pedro;

Variación estacional de la composición proximal del mejillón Tagelus peruvianus (Bivalvia: Solecurtidae) del Golfo de Nicoya, Puntarenas, Costa Rica

Abstract

[EN] 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 gaining 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 nutritional value for human consumption because of the low-fat and moderate protein content

[ES] La extracción del mejillón Tagelus peruvianus representa una actividad económica complementaria de los pescadores artesanales, es una de las especies de mayor pesca y consumo ya que son una fuente importante de proteína, minerales y vitaminas esenciales para la población humana. Por lo tanto, se estudió la variación estacional de su composición proximal, índice de condición y contenido energético. Mensualmente, entre noviembre de 2007 y octubre de 2008, se recolectaron de 35 a 40 especímenes. La composición proximal se determinó siguiendo la metodología recomendada por la AOAC. Los resultados mostraron que el índice de condición disminuyó en los meses de diciembre, enero y mayo, lo que indica que hay dos periodos de desove y una fase de reposo gonadal. El componente principal del mejillón es la proteína (61.9±4.3%), seguido de 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. La disminución en los valores de proteínas, lípidos y calorías coinciden con los periodos de desove. Se puede concluir que T. peruvianus presenta valores nutricionales óptimos para el consumo humano, por su bajo contenido de grasa y su aceptable contenido proteico

7 pages, 1 figure, 2 tables

Peer Reviewed

Countries
Costa Rica, Spain
Keywords

Costa Rica, Condition index, PROTEINS, QH301-705.5, Composición proximal, Valor calórico, mussel, Mejillón, ARTISANAL FISHING, GOLFO DE NICOYA, Golfo de Nicoya. Costa Rica, caloric content, MEJILLÓN, condition index, Gulf of Nicoya, COSTA RICA, Biology (General), GOLFO DE NICOYA (COSTA RICA), PESCA ARTESANAL, Índice de condición, Caloric content, COSTA RICAN, CONSUMO, MUSSEL, CONSUMPTION, GULF OF NICOYA, PROTEÍNAS, valor calórico, composición proximal, proximate composition, Proximate composition, BIVALVOS, Golfo de Nicoya, mejillón, Mussel, índice de condición, Tagelus peruvianus

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