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Bioaccumulation of metals in tissues of marine animals, Part II - metal concentrations in animal tissues
Abstract
The bioaccumulation of metals in an animal depends on a multitude of factors: biotic ones, like its body dimensions and mass, age, sex, diet, metabolism and position in the trophic web, as well as abiotic ones such as the distribution of metals in its environment, the salinity, temperature and pH of the water, habitat type, interactions with other metals. But it is diet that has the greatest influence on the accumulation of metals in animal tissues. Bioaccumulation is a complex process, requiring the simultaneous examination of metal levels in the tissues of animals from at least two adjacent trophic levels. To illustrate the differences in metal concentrations in animals, data are presented on heavy metal levels in the tissues of different groups of animals (marine molluscs, crustaceans, echinoderms, fish, Sea Turtles, birds and mammals) from various levels of the trophic pyramid. Most commonly, metal concentrations are higher in larger animals that are end members of a trophic chain than in the smaller organisms that they feed on. Since to a large extent an animal's habitat determines the level of metals in its body, these data are generally indicators of the extent of pollution of the water body in which it lives. It has been found that carnivorous species bioaccumulate far greater quantities of metals than herbivores or omnivores, and that metal levels are lower in organisms capable of detoxifying or excreting metals.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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POLISH JOURNAL OF ENVIRONMENTAL STUDIES
no. 20,
pages 1127 - 1146,
ISSN: 1230-1485 - Language:
- English
- Publication year:
- 2011
- Bibliographic description:
- Jakimska-Nagórska A., Konieczka P., Skóra K., Namieśnik J.: Bioaccumulation of metals in tissues of marine animals, Part II - metal concentrations in animal tissues// POLISH JOURNAL OF ENVIRONMENTAL STUDIES. -Vol. 20, nr. iss. 5 (2011), s.1127-1146
- Verified by:
- Gdańsk University of Technology
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