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  • Title: Alighting and feeding behaviour of tabanid flies on horses, kangaroos and pigs.
    Author: Muzari MO, Skerratt LF, Jones RE, Duran TL.
    Journal: Vet Parasitol; 2010 May 28; 170(1-2):104-11. PubMed ID: 20153116.
    Abstract:
    Successful mechanical transmission of surra between animals by tabanid flies (Diptera: Tabanidae) depends to a large extent on the blood-feeding behaviour of the tabanid species prevalent in the area. We studied tabanid-host interactions in Australia to better predict risk of surra transmission and design intervention strategies. At least six tabanid species were observed alighting on horses, pigs and kangaroos, but the most abundant were Tabanus pallipennis Macquart, Pseudotabanus silvester Bergroth and T. townsvilli Ricardo. The behaviour of tabanids in terms of landing location on the host body, duration of feeding and the proportion completing the blood-meal varied with fly species and host species. The findings predict that some species of tabanid such as T. pallipennis should be better vectors and some species of host such as pigs should be better reservoirs of surra based on the inability of flies to feed to repletion and longer feeding durations. This will result in multiple feeds and increased risk of exposure to the infectious agent, respectively, which increases the risk of transmission. Insecticide treatments should target preferred feeding sites on the host's body.
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