DSpace
 
  Repositório Institucional da Universidade de Aveiro > Departamento de Biologia > BIO - Artigos >
 Can avoidance in Enchytraeus albidus be used as a screening parameter for pesticides testing?
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6428

title: Can avoidance in Enchytraeus albidus be used as a screening parameter for pesticides testing?
authors: Novais, SC
Soares, AMVM
Amorim, MJB
keywords: Enchytraeid worms
Toxicity
Soil
Survival
Reproduction
issue date: 2010
publisher: Elsevier
abstract: Enchytraeids are important inhabitants of a wide variety of soil types and suitable test organisms for environmental risk assessment through the determination of effects on survival and reproduction. In this study, the effect of pesticides with different modes of action is assessed in the standard test species Enchytraeus albidus. Main goals were: (a) to test the toxicity of a range of pesticides to E. albidus in a natural soil (LUFA 2.2), (b) to assess whether avoidance gave a prediction of effects on the survival and reproduction, and (c) to investigate if the organisms' response to different toxics can be grouped into the respective chemical classes. Pesticides selected were the: (1) herbicides: phenmedipham and atrazine; (2) fungicides: carbendazim and pentachlorophenol: and (3) insecticides: dimethoate and lindane. All tested pesticides caused effects in the survival and reproduction of E. albidus and the compounds that showed a higher toxicity were carbendazim, dimethoate and atrazine. The effect concentrations were not chemical class dependent. In general, survival and reproduction showed similar response patterns. Avoidance behaviour showed trends of response similar to these other measured endpoints, but was less sensitive and more variable (data from a previous study). It was not possible to establish a clear correlation between survival, reproduction and avoidance endpoints. From an ecological point of view, avoidance tests are relevant but due to lower sensitivity and higher variability it is recommended that the enchytraeid avoidance test should not be used for risk assessment purposes. (C) 2010 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/10773/6428
ISSN: 0045-6535
publisher version/DOI: http://dx.doi.org/10.1016/j.chemosphere.2010.01.011
source: Chemosphere
appears in collectionsBIO - Artigos

files in this item

file description sizeformat
202_ Chemosphere_2010_79_233.pdf267.5 kBAdobe PDFview/open
Restrict Access. You can Request a copy!
statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! RCAAP OpenAIRE DeGóis
ria-repositorio@ua.pt - Copyright ©   Universidade de Aveiro - RIA Statistics - Powered by MIT's DSpace software, Version 1.6.2