Experimental & Applied Acarology

, Volume 24, Issue 2, pp 115–121 | Cite as

Comparison of life-history traits of the two male morphs of the bulb mite, Rhizoglyphus robini

  • Jacek Radwan
  • Iwona Bogacz


Two basic male morphs occur in several species of the family Acaridae: heteromorphic fighters, possessing a thickened and sharply terminated third pair of legs, and homeomorphic males with unmodified legs. We compared major life-history traits of the two morphs in the bulb mite, Rhizoglyphus robini. We found no significant differences in development time or virility, but homeomorphic males lived 23% longer than heteromorphs. We discuss the possibility that the trade-off between longevity and adaptation for fighting maintains genetic variation for the male morph in the studied species.

Acari male polymorphism life-history trade-off pleiotropy fitness alternative mating tactics 


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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Jacek Radwan
    • 1
  • Iwona Bogacz
    • 1
  1. 1.Department of Zoopsychology and Animal Ethology,Institute of Environmental SciencesJagiellonian UniversityCracowPoland

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