Producción secundaria e índice de condición en Arca zebra (Mollusca: Bivalvia) del Golfo de Cariaco, Venezuela
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| Autoři: | , , , , |
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| Médium: | artículo original |
| Stav: | Versión publicada |
| Datum vydání: | 2001 |
| Popis: | 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%). |
| Země: | Portal de Revistas UCR |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Jazyk: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/17724 |
| On-line přístup: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/17724 |
| Klíčové slovo: | arca zebra fishery resource turkeywing Bivalvia production biomass |