Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Producción secundaria e índice de condición en <i>Arca zebra</i> (Mollusca: Bivalvia) del Golfo de Cariaco, Venezuela
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Keywords

arca zebra
fishery resource
turkeywing
Bivalvia
production
biomass

How to Cite

Prieto Arcas, A., Ramos A, O., Arrieche, D., Villalba, J., & Lodeiros, C. (2001). Producción secundaria e índice de condición en <i>Arca zebra</i> (Mollusca: Bivalvia) del Golfo de Cariaco, Venezuela. Revista De Biología Tropical, 49(2), 599–608. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/17724

Abstract

Production and condition index of a turkeywing (Arca zebra) population were studied from August 1984 to August 1985 in Pariche, Cariaco Gulf, Venezuela. Production was studied through bimonthly collections using a method designed for populations with continuous reproduction and indistinguishable age classes. The population distribution was stable with a mean density of 37 ind.m-2. A production of 131.61 g dry weight m-2 year-1 was calculated from data on density, biomass and weight increase along the year. Highest production was between February 1985 and August 1985 (65%) and concentrated in individuals 60.00-79.95 mm long (45.73%). There was large seasonal variation in the mean monthly condition index (IC= (Ps/Ph) x100) in the two size classes examined: it reached a maximum in July 1985 (26.84%) and a minimum in January 1985 (16.31%).
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