Acute toxicity of selected heavy metals to mangrove oyster Crassostrea rhizophorae.
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چکیده
منابع مشابه
Oyster condition index in Crassostrea rhizophorae (Guilding 1828) from a heavy-metal polluted coastal lagoon.
The condition index (CI) of oysters represents an ecophysiological approach to estimate meat quality and yield in cultured bivalve mollusks. In the present study, the CI of oysters from a heavy-metal polluted bay was analyzed with respect to Zn and Cd contamination in soft tissues, spawning, and polychaete infestation. The CI was calculated through a new technique based on molds made to measure...
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Mangrove oysters Crassostrea rhizophorae were sampled monthly in the estuary of Jaguaribe River, on the east coast of Ceará State, Brazil, between August, 2000 and December, 2001, making up 170 individuals. The water temperature varied from 26 to 30 degrees C and salinity from 21 to 42. The animals' size ranged from 3.4 to 7.2 cm height. Macroscopical and histopathological analyses were carried...
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The Mandinga Lagoon in the Mexican State of Veracruz is an important ecological zone that produces 32% of the oyster output in the state of Veracruz, the main oyster producer in Mexico. Samples of water, sediment, and oysters were collected in 2003 and 2004 to study heavy metal pollution. Metal concentrations were determined in water, soil, and oyster tissues from fresh and detoxified Crassostr...
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The acute toxic effects of a Nigerian crude oil (Egbogoro Liner II) to the mangrove oyster Crassostrea gasar were studied in bioassays. Tests were conducted over a 96-hr period after acclimatization of individuals in the laboratory, initially with a population comprising a broad size categories (11 60 mm) in range finding tests. The tests were semi-static bioassays in which the exposure media w...
متن کاملHealth assessment of the oyster Crassostrea rhizophorae on the southern coast of Bahia, northeastern Brazil.
This study investigated the health of natural stocks of the oyster Crassostrea rhizophorae on the southern coast of Bahia in northeastern Brazil, during summer and winter 2010, at three localities (sampling points) in the estuaries of the Maraú (Camamu Bay) and Graciosa rivers. A total of 180 oysters (30/sampling point/season) were examined macroscopically for the presence of pathogens and anat...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1980
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.46.777