Factors affecting the concentration in seven-spotted ladybirds (Coccinella septempunctata L.) of Cd and Zn transferred through the food chain
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
Abstract: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.
Source: Scopus
Factors affecting the concentration in seven-spotted ladybirds (Coccinella septempunctata L.) of Cd and Zn transferred through the food chain.
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
Abstract: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.
Source: PubMed
Factors affecting the concentration in seven-spotted ladybirds (<i>Coccinella septempunctata</i> L.) of Cd and Zn transferred through the food chain
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
Source: Web of Science (Lite)
Factors affecting the concentration in seven spotted ladybirds (Coccinella septempunctata L.) of Cd and Zn transferred through the food chain.
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
Abstract: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.
Source: Manual
Preferred by: Iain Green and Anita Diaz Isla
Factors affecting the concentration in seven-spotted ladybirds (Coccinella septempunctata L.) of Cd and Zn transferred through the food chain.
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
DOI: 10.1016/j.envpol.2009.07.032
Abstract: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.
Source: Europe PubMed Central