Pearcy A.1, Beyer J.2 2013. Spatial separation of intraspecific attachment sites of Amblyomma sylvaticum on angulate tortoises Chersina angulata // Acarina. Vol.21. No.2: 147–150 [in English].

1 Animal Plant and Environmental Sciences, University of Witwatersrand, Johannesburg, Private bag 3, Wits, 2030, South Africa; e-mail:

2 Department of Biology, 215 Cox Science Center, 1301 Memorial Dr, University of Miami, Coral Gables, Florida, 33124 USA; e-mail:

ABSTRACT: Host-parasite relationships are partly determined by the inter- and intraspecific competition of the present parasiste community. Preference in attachment site has evolved to counter both interspecifc and conspecific competition along with threat of dislodgement and reproductive success in ectoparasites. 3929 ticks (Amblyomma sylvaticum) were collected in West Coast National Park, South Africa from 24 Angulate tortoises (Chersina angulata). Amblyomma sylvaticum uses spatial segregation in attachment site preference to allow for simultaneous success of all life stages. The high density of A. sylvaticum and its preferred host C. angulata create an environment where the parasite population’s potential for growth and distribution is unparalleled by oth­er tick species in that location as seen through the lack of other tick species and A. sylvaticum presence on other host species.

KEY WORDS: intraspecific competition, attachment site, Amblyomma, ticks, parasite.

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