Biology, demography and community interactions of Tarsonemus (Acarina: tarsonemidae) mites phoretic on Dendroctonus frontalis (Coleoptera: Scolytidae)

  • Authors: Lombardero, Maria J.; Kleptzig, Kier D.; Moser, John C.; Ayres, Matthew P.
  • Publication Year: 2000
  • Publication Series: Miscellaneous Publication
  • Source: Agricultural and Forest Entomology, Vol 2: 193-202

Abstract

  1. Dendroctonus frontalis, the southern pine beetle, is associated with a diverse community of fungi and mites that are phoretic on the adult beetles. Tarsonemus ips, T. kranzti and T. fusarii (Acarina: Tarsonemidae) may interact within this community in ways that link the population dynamics of D. frontalis, the mites and three dominant species of fungi. We explored species associations by comparing the dietary suitability of different fungi for Tarsonemusspp.
  2. All three mite species fedand reproduced at high rates when feeding on the bluestain fungus, Ophiostoma minus, which is an antagonist of D. frontalis larvae.
  3. Mites also had positive population growth rates when feeding upon Ceratocystiopsis ranaculosus, one of the mycangial fungi, but could barely reproduce when feeding upon Entomocorticium sp. A., the mycangial fungus that is most suitable for D. frontalis.
  4. During the time from colonization of a tree by D. frontalis adults until departure from the tree of their progeny (~ 40 d at 30oC), mite populations feeding upon O. minus can increase by factors of up to 209 (T. fusarii), 173 (T. ips or 384 (T. krantzi). These high growth rates are allowed by rapid development (age of first reproduction = 8-9d), high fecundity (~ 1egg/d) and high longevity (>28 d).
  5. Precocious mating increases the chance that females are mated prior to colonizing a new tree and arrhenotokous parthengensis permits reproduction by unmated females.
  6. Tarsonemus mites may introduce negative feedback into D. frontalis population dynamics by generating indirect interactions between D. frontalis and O. minus.

  • Citation: Lombardero, Maria J.; Kleptzig, Kier D.; Moser, John C.; Ayres, Matthew P. 2000. Biology, demography and community interactions of Tarsonemus (Acarina: tarsonemidae) mites phoretic on Dendroctonus frontalis (Coleoptera: Scolytidae). Agricultural and Forest Entomology, Vol 2: 193-202
  • Keywords: Demography, indirect interactions, life-history, phoresy, southern pine beetle, trophic interactions
  • Posted Date: April 28, 2006
  • Modified Date: August 22, 2006
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.