Factors affecting fungus-induced larval mortality in Anopheles gambiae and Anopheles stephensi

S.T. Bukhari, A. Middelman, C.J.M. Koenraadt, W. Takken, B.G.J. Knols

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)

Abstract

Background Entomopathogenic fungi have shown great potential for the control of adult malaria vectors. However, their ability to control aquatic stages of anopheline vectors remains largely unexplored. Therefore, how larval characteristics (Anopheles species, age and larval density), fungus (species and concentration) and environmental effects (exposure duration and food availability) influence larval mortality caused by fungus, was studied. Methods Laboratory bioassays were performed on the larval stages of Anopheles gambiae and Anopheles stephensi with spores of two fungus species, Metarhizium anisopliae and Beauveria bassiana. For various larval and fungal characteristics and environmental effects the time to death was determined and survival curves established. These curves were compared by Kaplan Meier and Cox regression analyses. Results Beauveria bassiana and Metarhizium anisopliae caused high mortality of An. gambiae and An. stephensi larvae. However, Beauveria bassiana was less effective (Hazard ratio (HR)
Original languageEnglish
Article number22
Number of pages15
JournalMalaria Journal
Volume9
DOIs
Publication statusPublished - 2010

Keywords

  • dar-es-salaam
  • metarhizium-anisopliae
  • beauveria-bassiana
  • entomopathogenic fungus
  • bacillus-sphaericus
  • mosquito larvae
  • malaria control
  • aedes-aegypti
  • culex-quinquefasciatus
  • antibacterial activity

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