| Abstrakt: |
AbstractIn the course of a systematic survey from 1979 to 1982 in southern Quebec and eastern Ontario, 11 genera of mites, representing five families and 15 species, were found associated with Phyllophaga anxia(LeConte). The rate of infestation in each growth stage of the host ranged from 0 (eggs and prepupae) to 54.6% (third-instar grubs). Although it was not possible to determine with certainty the ecological roles of the mite taxa, and thus to assess the real impact of the species involved, it is likely that the Macrochelidae, Parasitidae, and possibly Eviphididae were partially regulating local P. anxiapopulations. The Acaridae and Histiostomidae (Anoetidae) probably had a harmless phoretic or saprotrophic relation with their hosts. Most of the mite species reported here were found associated with PhyllophagaHarris in Canada for the first time. |
