Reproduction of the dung beetle (Copris tripartitus) in the dung of cattle treated with cis-cypermethrin and chlorpyrifos

Publication Type:Journal Article
Year of Publication:2007
Authors:H. Son Bang, Lee, J. - H., Na, Y. Eun, Wall, R.
Journal:Applied Soil Ecology
Date Published:Mar
ISBN Number:0929-1393
Accession Number:ISI:000244172100010
Keywords:ABAMECTIN, COLEOPTERA, Dung beetles, INSECTS dung beetle, IVERMECTIN, reproduction, RESIDUES, Scarabaeidae, SURVIVAL, synthetic pyrethroid

Fresh dung was collected from untreated cattle and cattle dosed with a spray-on formulation of high cis-cypermethrin and chlorpyrifos (2.1 g/cow), on days 1, 3, 5 and 7 post-treatment. The survival and reproduction of the dung beetle Copris tripartitus Waterhouse, when given this dung was assessed. Residues of high cis-cypermethrin and chlorpyrifos in dung collected I day after treatment were sufficient to inhibit oviposition by female C. tripartitus. However, there was no significant effect on egg-laying in dung collected at days 3, 5 or 7 days post-treatment. In a second generation of C. tripartitus, derived from beetles fed the dung from treated animals, residues in dung collected both 1 and 3 days after treatment were sufficient to inhibit oviposition, and residues in dung collected 1 day after treatment inhibited dung consumption by newly emerged adults of C. tripartitus. It is concluded that dung voided by cattle treated with a spray-on formulation of high cis-cypermethrin and chlorpyrifos have toxic lethal effects for 1 day post-treatment and sub-lethal toxic effects on ovarian condition and brood-ball production in dung voided at 1 and 3 days posttreatment. The potential ecotoxic effects of these compounds are discussed in terms of dung beetle activity and strategies for parasite control of cattle in the Korean environment. (c) 2006 Elsevier B.V. All rights reserved.

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