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Choice test to determine potential attractants and repellents for the sheep scab mite, Psoroptes ovis (Acari: Psoroptidae).

Authors
  • Dunn, J A1
  • Prickett, J C2
  • Collins, D A2
  • Macarthur, R2
  • Weaver, R J2
  • 1 Fera Science Ltd., Sand Hutton, York, YO41 1LZ, UK. [email protected]
  • 2 Fera Science Ltd., Sand Hutton, York, YO41 1LZ, UK.
Type
Published Article
Journal
Experimental and Applied Acarology
Publisher
Springer-Verlag
Publication Date
Oct 01, 2019
Volume
79
Issue
2
Pages
187–194
Identifiers
DOI: 10.1007/s10493-019-00416-x
PMID: 31598890
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

A choice test bioassay was devised to screen compounds as potential semiochemicals (e.g., kairomones or allomones that mediate aggregation, attraction or repellence) for the obligate parasitic mite, Psoroptes ovis. The choice test used filter paper discs in a 1:4 test:control ratio and was found to be a reliable, effective and efficient method. Four mammalian lipid components were assessed as potential attractants-linoleic acid, arachidonic acid, methyl myristate and squalene-, and the insect/tick repellent DEET for potential repellence. Linoleic acid was significantly attractive to P. ovis adult females and has the potential to act as an attractant. Identification of P. ovis semiochemicals, especially attractants, would be beneficial in the development of novel control methods and tools for this species. This is essential considering the increase in resistance to the limited prophylactic chemical treatments in the UK, and the high prevalence of scab infections.

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