title: Intraspecific variability in host manipulation by parasites.
abstract: Manipulative parasites have the capacity to alter a broad range of phenotypic traits in their hosts, extending from colour, morphology and behaviour. While significant attention has been devoted to describing the diversity of host manipulation among parasite clades, and testing the adaptive value of phenotypic traits that can be manipulated, there is increasing evidence that variation exists in the frequency and intensity of the changes displayed by parasitized individuals within single host-manipulative parasite systems. Such variability occurs within individuals, between individuals of a same population, and across populations. Here we review the non-genetic (i.e. environmental) and genetic causes of variability in host behaviour manipulation, discuss its evolutionary significance, and propose directions for further researches.
authors.affiliation: IRD, MIVEGEC (UMR CNRS/IRD/UM), Team Strategy and Adaptation of Transmission, 911 Avenue Agropolis, 34090 Montpellier, France. frederic.thomas2@ird.fr
authors.forename: Frédéric
authors.initials: F
authors.lastname: Thomas
authors.forename: Jacques
authors.initials: J
authors.lastname: Brodeur
authors.forename: Fanny
authors.initials: F
authors.lastname: Maure
authors.forename: Nathalie
authors.initials: N
authors.lastname: Franceschi
authors.forename: Simon
authors.initials: S
authors.lastname: Blanchet
authors.forename: Thierry
authors.initials: T
authors.lastname: Rigaud
mesh_terms: D000049:Acanthocephala / Q000502:physiology*; D000222:Adaptation, Physiological; D000375:Aging; D000818:Animals; D005075:Biological Evolution; D002589:Cestoda / Q000502:physiology*; D004777:Environment; D005260:Female; D014644:Genetic Variation; D006790:Host-Parasite Interactions; D008297:Male; D010641:Phenotype; D014200:Trematoda / Q000502:physiology*