Factors affecting the concentration in seven-spotted ladybirds (Coccinella septempunctata L.) of Cd and Zn transferred through the food chain

This source preferred by Iain Green and Anita Diaz

Authors: Green, I.D., Diaz, A. and Tibbett, M.

Journal: Environmental Pollution

Volume: 158

Pages: 135-141

ISSN: 0269-7491

DOI: 10.1016/j.envpol.2009.07.032

The transfer of Cd and Zn from soils amended with sewage sludge was followed through a food chain consisting of wheat, aphids and the predator Coccinella septempunctata. Multiple regression models were generated to predict the concentrations of Cd and Zn in C. septempunctata. No significant model could be generated for Cd, indicting that the concentration of this metal was maintained within relatively narrow limits. A model predicting 64 % of the variability in the Zn concentration of C. septempunctata was generated from of the concentration of Zn in the diet, time and rate of Zn consumption. The results suggest that decreasing the rate of food consumption is an effective mechanism to prevent the accumulation of Zn and that the availability of Zn in the aphid prey increased with the concentration in the aphids. The results emphasise the importance of using ecologically relevant food chains and exposure pathways during ecotoxicological studies.

This data was imported from PubMed:

Authors: Green, I.D., Diaz, A. and Tibbett, M.

Journal: Environ Pollut

Volume: 158

Issue: 1

Pages: 135-141

eISSN: 1873-6424

DOI: 10.1016/j.envpol.2009.07.032

The transfer of Cd and Zn from soils amended with sewage sludge was followed through a food chain consisting of wheat, aphids and the predator Coccinella septempunctata. Multiple regression models were generated to predict the concentrations of Cd and Zn in C. septempunctata. No significant model could be generated for Cd, indicting that the concentration of this metal was maintained within relatively narrow limits. A model predicting 64% of the variability in the Zn concentration of C. septempunctata was generated from of the concentration of Zn in the diet, time and rate of Zn consumption. The results suggest that decreasing the rate of food consumption is an effective mechanism to prevent the accumulation of Zn and that the availability of Zn in the aphid prey increased with the concentration in the aphids. The results emphasise the importance of using ecologically relevant food chains and exposure pathways during ecotoxicological studies.

This data was imported from Scopus:

Authors: Green, I.D., Diaz, A. and Tibbett, M.

Journal: Environmental Pollution

Volume: 158

Issue: 1

Pages: 135-141

ISSN: 0269-7491

DOI: 10.1016/j.envpol.2009.07.032

The transfer of Cd and Zn from soils amended with sewage sludge was followed through a food chain consisting of wheat, aphids and the predator Coccinella septempunctata. Multiple regression models were generated to predict the concentrations of Cd and Zn in C. septempunctata. No significant model could be generated for Cd, indicting that the concentration of this metal was maintained within relatively narrow limits. A model predicting 64% of the variability in the Zn concentration of C. septempunctata was generated from of the concentration of Zn in the diet, time and rate of Zn consumption. The results suggest that decreasing the rate of food consumption is an effective mechanism to prevent the accumulation of Zn and that the availability of Zn in the aphid prey increased with the concentration in the aphids. The results emphasise the importance of using ecologically relevant food chains and exposure pathways during ecotoxicological studies. © 2009 Elsevier Ltd. All rights reserved.

This data was imported from Web of Science (Lite):

Authors: Green, I.D., Diaz, A. and Tibbett, M.

Journal: ENVIRONMENTAL POLLUTION

Volume: 158

Issue: 1

Pages: 135-141

ISSN: 0269-7491

DOI: 10.1016/j.envpol.2009.07.032

This data was imported from Europe PubMed Central:

Authors: Green, I.D., Diaz, A. and Tibbett, M.

Journal: Environmental pollution (Barking, Essex : 1987)

Volume: 158

Issue: 1

Pages: 135-141

eISSN: 1873-6424

ISSN: 0269-7491

The transfer of Cd and Zn from soils amended with sewage sludge was followed through a food chain consisting of wheat, aphids and the predator Coccinella septempunctata. Multiple regression models were generated to predict the concentrations of Cd and Zn in C. septempunctata. No significant model could be generated for Cd, indicting that the concentration of this metal was maintained within relatively narrow limits. A model predicting 64% of the variability in the Zn concentration of C. septempunctata was generated from of the concentration of Zn in the diet, time and rate of Zn consumption. The results suggest that decreasing the rate of food consumption is an effective mechanism to prevent the accumulation of Zn and that the availability of Zn in the aphid prey increased with the concentration in the aphids. The results emphasise the importance of using ecologically relevant food chains and exposure pathways during ecotoxicological studies.

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