Accumulation of Copper by Golden Apple Snail Pomacea canaliculata Lamarck
Silvia C. Peña1 and Glorina N. Pocsidio2
11Institute of Environmental Science and Meteorology
University of the Philippines, Diliman, Quezon City, Philippines
2Institute of Biology, University of the Philippines
Diliman, Quezon City, Philippines
The golden apple snail (Pomacea canaliculata) accumulated copper (Cu) from 20, 30, 45, 67.5, and 101.25 µg Cu/L but showed behavioral regulation at 67.5 and 101.25 µg Cu/L. Bioaccumulation factor (1.04), biotransference factor (1.01), assimilation efficiency (89%), and accumulation rate (8.97 µg Cu/g/day) were high in 7 days of exposure. Copper accumulation from the dissolved copper, food, and sediment by the organs such as kidney, digestive gland, foot, and gills were not significantly different from one another. But the Cu accumulation in dissolved Cu and sediment by the whole soft tissue were significantly higher than those from the food and the control. Gill was the main route of exposure for dissolved Cu. Results obtained favored golden apple snail as Cu biomonitor at sublethal concentrations (0-45 µg Cu/L) using its whole tissue for analysis. It could be used as biomarker at high concentrations.
Heavy metals in urban and roof runoffs, municipal, and industrial sewage are carried into rivers and deposited into sediment beds. These are then consumed primarily by fish, crustaceans, and mollusks that have the ability to accumulate heavy metals in their tissues, which in turn make them accessible for human consumption through the food chain. It is therefore imperative to monitor them for public safety and other ecological concerns.
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