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    Predation by and activity patterns of ‘parasitic’ beetles of the genus Amblyopinus (Coleoptera: Staphylinidae)

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    Ashe-1987-JZ-212-3-429.pdf (850.8Kb)
    Issue Date
    1987-07
    Author
    Ashe, James S.
    Timm, Robert M.
    Publisher
    Journal of Zoology (London)
    Type
    Article
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    Abstract
    This study explores the relationship between staphylinid beetles of the genus Amblyopinus and their small mammal hosts. Previous studies had concluded that these beetles were parasitic and fed directly on blood, skin exudates, or other epidermal derivatives of their hosts. We examined the mode of attachment, behaviour, and feeding activities of 254 Amblyopinus (A. tiptoni and A. emarginatus) on 69 hosts which were captured in Sherman live traps. In addition, similar information and diurnal activity patterns were monitored for 11 beetles kept on two hosts (Peromyscus nudipes) over a period of 14 days. Beetles were found to be attached to the host only by grasping clumps of fur in their mandibles. No sign of damage to the skin of the host could be found. Feeding by the beetles on parasitic arthropods was observed and concluded to be the primary feeding habit. Beetles showed a strong circadian activity pattern, in which they are attached to the host during night-time hours and actively hunt in the nest during daylight hours. Attachment to the host is hypothesized to he primarily a vehicle for tracking prey of the beetles within the variety of nests used by any individual host. We conclude that these beetles are not parasitic but, instead, highly specialized predators on ectoparasitic arthropods, with specialized behavioural and morphological adaptations for their unique life style.
    URI
    http://hdl.handle.net/1808/4500
    Collections
    • Center for Latin American and Caribbean Studies Scholarly Works [738]
    • Ecology & Evolutionary Biology Scholarly Works [1516]
    • Kansas African Studies Center Scholarly Works [272]
    Citation
    Ashe, J. S. and R. M. Timm. 1987. Predation by and activity patterns of ‘parasitic’ beetles of the genus Amblyopinus (Coleoptera: Staphylinidae). Journal of Zoology (London) 212(3):429–437.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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