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Parasitogenic alterations of vector behaviour.

Günter A Schaub1

  • 1Department of Special Zoology, Ruhr-University, D-44780 Bochum, Germany.

International Journal of Medical Microbiology : IJMM
|March 15, 2006
PubMed
Summary
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Parasite infections alter blood-feeding arthropod behavior, increasing disease transmission. Mechanisms include altered feeding leading to more attacks or impaired ingestion due to gut disturbances and salivary gland damage.

Area of Science:

  • Vector-borne diseases
  • Parasitology
  • Insect behavior

Background:

  • Parasite infections in arthropod vectors often alter their behavior.
  • These behavioral changes can significantly impact disease transmission rates.
  • Understanding these mechanisms is crucial for controlling vector-borne diseases.

Purpose of the Study:

  • To elucidate the mechanisms by which parasite infections alter arthropod behavior.
  • To explore how these behavioral alterations influence disease transmission.
  • To identify common mechanisms across different parasite-vector systems.

Main Methods:

  • Review and synthesis of existing literature on parasite-vector interactions and behavioral changes.
  • Analysis of specific examples including Trypanosoma rangeli in Rhodnius prolixus, Plasmodium in mosquitoes, and Leishmania in sandflies.

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  • Examination of physiological impacts on arthropod feeding and digestion.

    • Main Results:

    • Parasite infections can lead to sluggish movement or increased host-seeking behavior.
    • Altered feeding behavior can result from metabolite competition or direct interference with ingestion.
    • Damage to salivary glands and digestive tract disturbances are common consequences of infection.

    Conclusions:

    • Parasite-induced behavioral changes in vectors are a key factor in disease transmission.
    • Mechanisms include altered feeding patterns and physiological damage.
    • Further research is needed to fully understand and target these mechanisms for disease control.