“…parasite ‘regime’) appears to be very consistent (Gotanda et al ., ). Gyrodactylus parasites have strong effects on guppy survival, growth and reproduction (Scott & Anderson, ; van Oosterhout et al ., ; Gotanda et al ., ; Pérez‐Jvostov et al ., , ; Dargent et al ., , ), and guppies show corresponding evolutionary responses in resistance (Scott & Anderson, ; Dargent et al ., ; Pérez‐Jvostov et al ., ) and MHC diversity (van Oosterhout et al ., ; Fraser & Neff, ). Of particular relevance to our study, Gyrodactylus infection influences, and is influenced by, various aspects of behaviour.…”