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Environmental consequences of treating cattle with the antiparasitic drug ivermectin

Wall, Richard ; Strong, Les

Nature (London), 1987-06, Vol.327 (6121), p.418-421 [Periódico revisado por pares]

London: Nature Publishing

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Título:
Environmental consequences of treating cattle with the antiparasitic drug ivermectin
Autor: Wall, Richard ; Strong, Les
Assuntos: Animal, plant and microbial ecology ; Animals ; annelida ; Applied ecology ; Biological and medical sciences ; Cattle ; coleoptera ; Coleoptera - drug effects ; diptera ; Diptera - drug effects ; Drugs ; Ecotoxicology, biological effects of pollution ; Effects of pollution and side effects of pesticides on protozoa and invertebrates ; estiercol ; farmyard manure ; fauna del suelo ; faune du sol ; Feces ; fumier de ferme ; Fundamental and applied biological sciences. Psychology ; ganado bovino ; gros betail ; Insecta ; insecticidas ; insecticide ; insecticides ; Ivermectin - pharmacology ; Ivermectin - therapeutic use ; Livestock ; Oligochaeta - drug effects ; pastizales ; pastures ; paturages ; Pesticides ; Soil ; soil fauna ; terapia ; therapeutique ; therapy
É parte de: Nature (London), 1987-06, Vol.327 (6121), p.418-421
Notas: L74
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Descrição: Ivermectin (22,23-dihydroavermectin B1) is a recently discovered, persistent, broad-spectrum, antiparasitic drug of unpredecented potency which is now routinely administered to cattle, horses, sheep and pigs in many countries. In cattle, it is an efficient control for parasitic gastrointestinal and respiratory tract nematodes, warble fly, mites, lice and ticks. However, most of the ivermectin dose is ultimately eliminated in the faeces of the treated animals where it has been shown to have an insecticidal effect on the larvae of economically important, dung-breeding, haematophagous Diptera. Nevertheless, the effects of excreted ivermectin on the cowpat fauna as a whole and the wider consequences of such effects have not previously been considered. In field trials reported here, the faeces of calves fitted with rumenal boluses delivering ivermectin at 40 micrograms per kg per day, failed to degrade in the normal way and this failure was associated with the absence of dung-degrading insects. Faeces from placebo-treated controls contained a characteristic dung-degrading invertebrate community and were largely degraded within 100 days. These results indicate that the increasing widespread use of ivermectin may have important environmental consequences for pastureland.
Editor: London: Nature Publishing
Idioma: Inglês

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Environmental consequences of treating cattle with the antiparasitic drug ivermectin

Wall, Richard ; Strong, Les

London: Nature Publishing

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