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Preliminary assessment of the potential for mangrove oyster cultivation in Piraquê-açu river estuary (Aracruz, ES)

2006; Instituto de Tecnologia do Paraná (Tecpar); Volume: 49; Issue: 1 Linguagem: Inglês

10.1590/s1516-89132006000100019

ISSN

1678-4324

Autores

Luciana Alvarenga, Rosebel Cunha Nalesso,

Tópico(s)

Aquaculture Nutrition and Growth

Resumo

At Piraquê-açu river estuary, Aracruz, ES, the technical viability of Crassostrea rhizophorae cultivation was determined through monthly measures in shell length and weight. Seeds of C. rhizophorae were put in cages and suspended in rafts. Increase in height and weight (flesh and dry) of the oysters was measured. During ten months (July/98 to May/99), oyster shell reached an average of 37.6 mm in shell height and 3.0 g in flesh weight (the whole animal). High mortality rates were registered and could be related to the high salinity water and to high predation observed, especially by flatworms Stylochophana divae and snails Cymatium parthenopeum, as well as fouling organisms such as barnacles, Serpulidae polychaetes and seed of the same species.

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