Effects of fluazuron and ivermectin treatment of cattle on the structure of dung beetle communities

Kryger, U.; Deschodt, Christian M.; Scholtz, Clarke H.

doi:10.1016/j.agee.2004.08.003

Cited by 27 publications

(18 citation statements)

References 17 publications

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“…The data from the literature that provided the foundation for the model was predominantly derived from studies in temperate regions, and we recognize that climatic differences may have a significant impact on the ecotoxicity of such medicines (Kryger et al, 2005). Moreover, the model was based upon a set-stocked system but could be modified to represent more extensive systems, including ranch/range rearing of cattle in the USA, South America, and Australia.…”

Section: Discussionmentioning

confidence: 99%

Modelling the impact of targeted anthelmintic treatment of cattle on dung fauna

Cooke

Morgan

Dungait

2017

Environmental Toxicology and Pharmacology

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Section: Discussionmentioning

confidence: 99%

Modelling the impact of targeted anthelmintic treatment of cattle on dung fauna

Cooke

Morgan

Dungait

2017

Environmental Toxicology and Pharmacology

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“…Freezing the dung does not appear to affect the toxicity of endectocide residues (K Floate and J-P Lumaret, personal observations). Variations of these 2 methods have been described by Kryger et al (2005Kryger et al ( , 2006Kryger et al ( , 2007 and Wardhaugh et al (2001c).…”

Section: Dung Qualitymentioning

confidence: 99%

“…Numerous studies have assessed the effects of VMPs on dung organisms, both in the laboratory and in the field, using different methods (reviews by Floate et al 2005;Lumaret and Errouissi 2002;Wardhaugh 2005;also Floate 2007;Floate et al 2008;Hempel et al 2006;Iwasa et al 2007Iwasa et al , 2008Kryger et al 2005Kryger et al , 2007Lumaret et al 2007;Rö mbke et al 2007Rö mbke et al , 2009Suárez et al 2009;Webb et al 2007Webb et al , 2010. Collectively, these studies support the following conclusions: 1) there has been a strong bias for research on endectocides, primarily ivermectin but also doramectin, eprinomectin, and moxidectin; 2) most of the research studies have been performed in Europe, Canada, and Australia, and to a lesser extent in Japan, South Africa, South America, and the United States; 3) the lethal effects of residues on species of dungbreeding flies and beetles in cattle dung are most often measured; 4) because insect activity can accelerate dung pat degradation, the effect of residues on the rate of dung decomposition also is often measured in field-based studies; 5) the lack of standard test methods and reporting protocols largely prevents direct comparisons among studies; and 6) the interpretation of results is generally hampered and easily confounded by a lack of knowledge about the local biological aspects of the study system, i.e., the dung pat and its associated organisms, which may vary considerably among geographic regions.…”

Section: Introductionmentioning

confidence: 99%

How to test nontarget effects of veterinary pharmaceutical residues in livestock dung in the field

Jochmann

Blanckenhorn

Bussière

et al. 2011

Integr Envir Assess & Manag

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To register veterinary medicinal products (VMPs) as parasiticides on pastured animals, legislation in the European Union requires an environmental risk assessment to test the potential nontarget effects of fecal residues on dung-dwelling organisms. Products with adverse effects in single-species laboratory tests require further, higher-tier testing to assess the extent of these effects on entire communities of dung-dwelling organisms under more realistic field or semifield conditions. Currently, there are no documents specifically written to assist researchers in conducting higher-tier tests or to assist regulators in interpreting the results of such tests in an appropriate context. Here we provide such a document, written by members of the SETAC Advisory Group DOTTS (Dung Organism Toxicity Testing Standardization) with research experience on dung fauna in central and southern Europe, Canada, Australia, and South Africa. This document briefly reviews the organisms that make up the dung community and their role in dung degradation, identifies key considerations in the design and interpretation of experimental studies, and makes recommendations on how to proceed.

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“…Fluazuron is in this class and it is considered to be a good drug for controlling ticks on ruminants, due to its high specificity, low mammalian toxicity, effectiveness at low concentrations and long-lasting residual effect against reinfestation (Kryger et al 2005). The action and safety of this antiparasitic drug has now also been tested against fleas and ticks on dogs, with promising results (Vieira 2009, 2012, Oliveira et al 2012.…”

Section: Introductionmentioning

confidence: 99%

Clinical and parasitological evaluation of pour-on fluazuron and ivermectin for treating canine demodicosis

2014

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RESUMO.-[Avaliação clínica e parasitológica do fluazuron e da ivermectina pour-on no tratamento da demodiciose canina.] O objetivo do presente estudo foi avaliar a eficácia do fluazuron e da ivermectina pour-on em diferentes protocolos terapêuticos no tratamento da demodiciose, através da quantificação de ácaros por raspados cutâneos e exames histológicos, além da avaliação dos cães. Foram avaliados 18 cães com raspados cutâneos positivos para o ácaro Demodex canis, divididos em três grupos. Todos os animais foram tratados a cada 14 dias, totalizando seis tratamentos em cada cão (Dias 0, 14, 28, 42, 56 e 70). No grupo 1 foi utilizado fluazuron 2,5% pour-on na dosagem de 20mg/kg; no grupo 2 foi empregado fluazuron 2,5% pour--on na dosagem de 20mg/kg associado a ivermectina 0,5% pour-on, na dosagem de 0,6mg/kg e, no grupo 3, somente ivermectina 0,5% pour-on 0,6mg/kg. The objective of the study was to evaluate the efficacy of pour-on formulations of fluazuron and ivermectin in different therapeutic protocols for treatment of demodicosis by means of quantifying mites with skin scraping, histological and clinical evaluation in dogs. Eighteen dogs with skin scrapings positive for Demodex canis were evaluated, divided into three groups. All the animals were treated every 14 days, completing 6 treatments for each animal (days 0, 14, 28, 42, 56 and 70). In group 1, pour-on 2.5% fluazuron was used at the dose of 20mg/kg; in the group 2 pour-on 2.5% fluazuron at a dose of 20 mg/kg in association with pour-on 0.5% ivermectin at the dose of 0.6mg/kg; and in group 3, pour-on 0.5% ivermectin alone was used, at the dose of 0.6mg/kg. The treatment was evaluated and monitored through skin scrapings and clinical follow-up of the lesions every 14 days for 84 days, and through histopathological examination at the end of each treatment protocol. The success rate was defined as the percentage of dogs in each group that had negative skin scrapings after the treatment: this was 16.67% for group 1, and 50% for groups 2 and 3. The reduction in mite counts reached effectiveness of 67.66%, 88.99% and 84.29% for groups 1, 2 and 3 respectively. The Wilcoxon test showed that there was a significant difference between the number of mites before and after treatment in groups 2 and 3. The histopathological examination revealed that only group 1 showed no significant difference in the intensity of infestation between days 0 and 84. Clinically, there was no significant difference between the evaluation before and after treatment in the three groups. Pour-on 2.5% fluazuron and pour-on 0.5% ivermectin were not effective for treating canine demodicosis, either in association or as single therapy, when applied every 14 days for a period of 70 days. Quantification of mites using skin scrapings and histological evaluation proved to be ineffective, either one as sole therapeutic evaluation parameters, for canine demodicosis.INDEX TERMS: Demodex canis, control, fluazuron, ivermectin, pour-on. 1095 Clinical and parasitological evaluation of pour-on fluazuro...

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Effects of fluazuron and ivermectin treatment of cattle on the structure of dung beetle communities

Cited by 27 publications

References 17 publications

Modelling the impact of targeted anthelmintic treatment of cattle on dung fauna

Modelling the impact of targeted anthelmintic treatment of cattle on dung fauna

How to test nontarget effects of veterinary pharmaceutical residues in livestock dung in the field

Clinical and parasitological evaluation of pour-on fluazuron and ivermectin for treating canine demodicosis

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