Trace metal contamination: Transfer and fate in food chains of terrestrial invertebrates
Authors: Dar, M.I., Green, I.D. and Khan, F.A.
Journal: Food Webs
Volume: 20
eISSN: 2352-2496
DOI: 10.1016/j.fooweb.2019.e00116
Abstract:Anthropogenic activities have resulted in the wide spread contamination of soils with trace metals. Invertebrates form a key link between the soil and trophic levels. Hence, an understanding of trace metal accumulation and transfer within invertebrate food chains is essential to envisage the ecological consequences of contamination. This work reviewed the current understanding of the behaviour of trace metals in invertebrate food chains. The work found that essential trace metals had a far greater tendency to bioaccumulate in invertebrates than non-essential metals, but Cd was an exception. Reports demonstrate that accumulation can have no effect on some species and may actually prove beneficial to a few species at certain levels of exposure by increasing resistance to pesticides and immune response. For most invertebrates, negative effects on metabolism, fecundity, growth, developmental stability and survival occur once accumulation exceeds a critical level. Predators may be more vulnerable to trace metals than their prey, but there is greatly varying physiological differences among invertebrate species in all trophic levels that affect accumulation and detoxification of metals. There is currently insufficient ecotoxicology/physiological data to allow the identification of the taxa that have physiological traits that render sensitivity to elevated exposure to trace metals. This presents serious challenges to predict the transfer and effects of trace metal contamination. Agro-ecosystems are of particular concern as a disturbance of the predator-prey balance caused either by increased pesticide resistance in the prey, secondary toxicity to the predator or both may harm efforts to control pest species.
Source: Scopus
Trace metal contamination: Transfer and fate in food chains of terrestrial invertebrates
Authors: Dar, M.I., Green, I.D. and Khan, F.A.
Journal: FOOD WEBS
Volume: 20
ISSN: 2352-2496
DOI: 10.1016/j.fooweb.2019.e00116
Source: Web of Science (Lite)
Trace metal contamination: Transfer and fate in food chains of terrestrial invertebrates
Authors: Dar, M.I., Green, I.D. and Khan, F.A.
Journal: Food Webs
Volume: 20
eISSN: 2352-2496
DOI: 10.1016/j.fooweb.2019.e00116
Abstract:© 2019 Elsevier Inc. Anthropogenic activities have resulted in the wide spread contamination of soils with trace metals. Invertebrates form a key link between the soil and trophic levels. Hence, an understanding of trace metal accumulation and transfer within invertebrate food chains is essential to envisage the ecological consequences of contamination. This work reviewed the current understanding of the behaviour of trace metals in invertebrate food chains. The work found that essential trace metals had a far greater tendency to bioaccumulate in invertebrates than non-essential metals, but Cd was an exception. Reports demonstrate that accumulation can have no effect on some species and may actually prove beneficial to a few species at certain levels of exposure by increasing resistance to pesticides and immune response. For most invertebrates, negative effects on metabolism, fecundity, growth, developmental stability and survival occur once accumulation exceeds a critical level. Predators may be more vulnerable to trace metals than their prey, but there is greatly varying physiological differences among invertebrate species in all trophic levels that affect accumulation and detoxification of metals. There is currently insufficient ecotoxicology/physiological data to allow the identification of the taxa that have physiological traits that render sensitivity to elevated exposure to trace metals. This presents serious challenges to predict the transfer and effects of trace metal contamination. Agro-ecosystems are of particular concern as a disturbance of the predator-prey balance caused either by increased pesticide resistance in the prey, secondary toxicity to the predator or both may harm efforts to control pest species.
Source: Manual
Preferred by: Iain Green