Parasitogenic alterations of vector behaviour

International Journal of Medical Microbiology : IJMM
G A Schaub

Abstract

In many parasite-vector systems, alterations of the behaviour of the blood-sucking arthropods result in an increase of the transmission rate, but the underlying mechanisms are elucidated in only some systems. The more sluggish movements of the Trypanosoma rangeli-infected triatomine Rhodnius prolixus might increase the rate of predation by insectivorous mammals but also the transmission rate between the triatomines via cannibalism. Alterations of the feeding behaviour by which the number of attacks on hosts by blood-sucking arthropods can be increased seem to derive from two possible mechanisms. A competition for metabolites in the ingested blood induces an earlier starvation effect than in non-infected specimens and thus a new attempt by the insect to ingest blood. This may be relevant in T. cruzi-infected triatomines. Perhaps this is also the reason for the increased activity of ticks infected with the tick-borne encephalitis virus, resulting in a higher infection rate of ticks collected on humans than from the vegetation. The second, better elucidated mechanism is interference with the ingestion process, which causes a higher number of probings and low ingestion rates and is connected with disturbances of the digestive tract...Continue Reading

References

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Citations

Mar 17, 2011·PloS One·Tamara N Lima-CamaraAlexandre A Peixoto
Oct 4, 2014·Journal of Medical Entomology·Lauren A CastroNicole L Gottdenker
Apr 13, 2011·Journal of Medical Entomology·Ceres L AlvesMarcos H Pereira
Feb 9, 2008·Trends in Parasitology·Domenico OtrantoRobin B Gasser
Jun 26, 2007·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Thierry Lefèvre, Frédéric Thomas
May 11, 2007·Cellular Microbiology·Freddy Frischknecht
Dec 5, 2006·Journal of Insect Physiology·Eloi S GarciaPatricia Azambuja
Jul 6, 2010·Molecular and Biochemical Parasitology·Edmundo C GrisardMário Steindel
Oct 2, 2008·Journal of Medical Entomology·Kristine E BennettBarbara S Drolet
Apr 4, 2014·Biology Letters·Amy T Moore, Charles R Brown
Jan 30, 2014·Memórias do Instituto Oswaldo Cruz·Claudio Ricardo LazzariMarcelo Gustavo Lorenzo
Jan 30, 2014·Memórias do Instituto Oswaldo Cruz·Antonio Carlos Alves Meireles-Filho, Charalambos Panayiotis Kyriacou
Feb 4, 2010·Expert Review of Proteomics·Philippe HolzmullerDavid Georges Biron
Dec 12, 2012·The Journal of Experimental Biology·David G Biron, Hugh D Loxdale
Jul 13, 2021·Annals of the Entomological Society of America·Panpim ThongsripongShannon N Bennett

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