The role of midgut symbiotic bacteria in resistance of Anopheles stephensi (Diptera: Culicidae) to organophosphate insecticides

In the current study, the effects of the presence of symbiotic bacteria on the activity of the enzymes involved in An. stephensi resistance to temephos are evaluated for the first time. Four different strains (I. susceptible strain, II. resistant strain, III. resistant strain + antibiotic, and IV. r...

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Bibliographic Details
Published in:Pathogens and global health 2017-08, Vol.111 (6), p.289-296
Main Authors: Soltani, Aboozar, Vatandoost, Hassan, Oshaghi, Mohammad Ali, Enayati, Ahmad Ali, Chavshin, Ali Reza
Format: Article
Language:English
Subjects:
Anopheles stephensi
Insecticide resistance
Original
Symbiotic bacteria
Temephos
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Summary:In the current study, the effects of the presence of symbiotic bacteria on the activity of the enzymes involved in An. stephensi resistance to temephos are evaluated for the first time. Four different strains (I. susceptible strain, II. resistant strain, III. resistant strain + antibiotic, and IV. resistant strain + bacteria) were considered in order to determine the possible effects of the symbiotic bacteria on their hosts' resistance to temephos. The median values of all enzymes of susceptible strain were compared with those of other resistant strains. The results of this study indicated a direct relationship between the presence of bacteria in the symbiotic organs of An. stephensi and resistance to temephos. The profile of enzymatic activities in the resistant strain changed to a susceptible status after adding antibiotic. The resistance of An. stephensi to temephos could be completely broken artificially by removing their bacterial symbionts in a resistant population.
ISSN:2047-7724
2047-7732
DOI:10.1080/20477724.2017.1356052