Laboratory method for testing side-effects of pesticides on the rove beetleAleochara bilineata — Adults |
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Authors: | Lise Samsøe-Petersen |
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Institution: | (1) National Research Centre for Plant Protection, Lyngby, Denmark |
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Abstract: | Tests were conducted in glass cells containing moistened sand sprayed with the concentration recommended for the pesticide
or with demineralised water (controls). Adult females (1–2 weeks old) ofA. bilineata were placed on the fresh residue in the cells and provided daily with fresh fly eggs as food. The duration of the test was
5 days, mortality being recorded every day. The side effects of the pesticide were expressed as reduction in egg production
ofA. bilineata during the whole test period. Results permitted classification of the pesticides according to the 4 categories of harmfulness
used by the IOBC working group. 23 pesticides were tested, and the reproducibility of the test appeared to be satisfactory.
Generally, insecticides/acaricides had a pronounced effect on the beetles whereas fungicides and herbicides were less detrimental.
Exceptions were the insecticides Tedion V 18 and Kilval, classified as harmless, and the fungicides Morestan, Pomarsol forte
and Afugan rated as moderately harmful. Among growth regulators Prosevor 85 was highly detrimental while Cycocel Extra and
Rhodofix had no effects. Excepting Morestan, Pomarsol forte and Ustinex PA the pesticides did not affect the hatching of eggs.
The work was financed by the Danish Environmental Protection Agency. |
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Keywords: | Staphylinidae Aleochara bilineata pesticides laboratory test side effects beneficial arthropods |
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