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Earthworms in Short-Term Contact with a Low Dose of Neonicotinoid Actara 25WG.

Authors :
Garczyńska, Mariola
Pączka, Grzegorz
Mazur-Pączka, Anna
Kostecka, Joanna
Source :
Journal of Ecological Engineering; 2018, Vol. 19 Issue 3, p93-101, 9p
Publication Year :
2018

Abstract

A laboratory experiment, carried out for five months, was designed to assess the effects produced by the neonicotinoid Actara 25 WG, used at a dose recommended by the manufacturer, in the dynamics of the populations of epigeic Eisenia fetida (Sav.) and Dendrobena veneta (Rosa)earthworms. The study was conducted in a climatic chamber and involved balanced biomass of mature specimens representing both species, in 3 replications of soil medium with the insecticide, in addition to controls. The growing populations were inspected five times, by means of manual segregation of the substrate. The insecticide led to an increase in both the number of specimens and the biomass of E. fetida population (overall, as well as mature and immature worms), yet it reduced their reproduction (decreased the number of cocoons) (p<0.05). In the case of D.veneta, the neonicotinoid insecticide produced positive effects only in the mature specimens (p<0.05). [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22998993
Volume :
19
Issue :
3
Database :
Complementary Index
Journal :
Journal of Ecological Engineering
Publication Type :
Academic Journal
Accession number :
129277026
Full Text :
https://doi.org/10.12911/22998993/86254