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Filariasis

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Medical Entomology

Abstract

Parasitic round worms (nematodes) in the superfamily Filarioidea, family Onchocercidae, are the only metazoon disease agents of vertebrates that undergo true biological transmission by arthropod vectors. These worms parasitize the tissues and tissue spaces of all classes of vertebrates except fish (Anderson 1992). The insect-transmitted parasites are elongate, slender worms and differ from other Filarioidea in that the adults bear live young as highly specialized larval forms called microfilariae. Microfilariae migrate to the peripheral blood circulation or skin where they are accessible to bloodfeeding arthropod vectors. These arthropod vectors are obligate, intermediate hosts for the parasite, necessary for development from the microfilaria to the third-stage or infective larva (commonly abbreviated ”L3”). This is the stage infectious to vertebrates. None of the nematode larvae propagates in the vector.

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Author information

Authors and Affiliations

  1. University of Pennsylvannia, Philadelphia, USA

    James B. Lok

  2. Michigan State University, East Lansing, USA

    Edward D. Walker

  3. Yale University, New Haven, Connecticut, USA

    Glen A. Scoles

Authors
  1. James B. Lok
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  2. Edward D. Walker
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  3. Glen A. Scoles
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Editors and Affiliations

  1. Department of Entomology, Center for Vector-borne, Disease Research, University of California, Davis, USA

    Bruce F. Eldridge  & John D. Edman  & 

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© 2000 Kluwer Academic Publishers

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Lok, J.B., Walker, E.D., Scoles, G.A. (2000). Filariasis. In: Eldridge, B.F., Edman, J.D. (eds) Medical Entomology. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-6472-6_9

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  • DOI: https://doi.org/10.1007/978-94-011-6472-6_9

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-6321-7

  • Online ISBN: 978-94-011-6472-6

  • eBook Packages: Springer Book Archive

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