Vale, Glyn A., Hargrove, John W., Chamisa, Andrew, Grant, Ian F. and Torr, Stephen J. (2015) Pyrethroid treatment of cattle for tsetse control: Reducing its impact on dung fauna. PLOS Neglected Tropical Diseases, 9 (3):e0003560. pp. 1-11. ISSN 1935-2735 (doi:10.1371/journal.pntd.0003560)

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Abstract

Background: African trypansomiases of humans and animals can be controlled by attacking the vectors,various species of tsetse fly. Treatment of cattle with pyrethroids to kill tsetse as they feed is the most cost-effective method. However, such treatments can contaminate cattle dung, thereby killing the fauna which disperse the dung and so play an important role in soil fertility. Hence there is a need to identify cost-effective methods of treating cattle with minimal impact on dung fauna.
Methodology/Principal Findings: We used dung beetles to field bioassay the levels of dung contamination following the use of spray and pour-on formulations of deltamethrin, applied to various parts of the body of cattle in Zimbabwe. Results suggested that dung was contaminated by contact with insecticide on the body surface as the cattle defecated, and by ingestion of insecticide as the cattle
licked themselves. Death of dung beetles was reduced to negligible levels by using only the spray and applying it to the legs and belly or legs alone, i.e., places where most tsetse feed.
Conclusion/Significance: The restricted applications suitable for minimising the impact on dung fauna have the collateral benefits of improving the economy and convenience of cattle treatments for tsetse control. The demonstration of collateral benefits is one of the surest ways of promoting environmentally friendly procedures.

Item Type:	Article
Additional Information:	[1] Acknowledgements (funding): Financial support was received from the DFID Animal Health Programme (Project nos. R7539, R7987), the DFID/RCUK programme on Zoonoses and Emerging Livestock Systems (ZELS, BBSRC grant no. BB/L019035/1), and the ICEF/UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR). [2] Copyright: (C) 2015 Vale et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. [3] Citation: Vale GA, Hargrove JW, Chamisa A, Grant IF, Torr SJ (2015) Pyrethroid Treatment of Cattle for Tsetse Control: Reducing Its Impact on Dung Fauna. PLoS Negl Trop Dis 9(2): e0003560. doi:10.1371/ journal.pntd.0003560
Uncontrolled Keywords:	pyrethroid treatment, cattle, tsetse control, dung fauna
Subjects:	S Agriculture > S Agriculture (General) S Agriculture > SF Animal culture
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Natural Resources Institute
Related URLs:	Publisher
Last Modified:	22 Nov 2017 11:54
URI:	http://gala.gre.ac.uk/id/eprint/13339

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