Mortality in adult tsetse, Glossina morsitans morsitans, caused by entomopathogenic bacteria

Journal of Invertebrate Pathology
G P Kaaya, N Darji

Abstract

Mortality in adult tsetse, Glossina morsitans morsitans, caused by Pseudomonas aeruginosa, Serratia marcescens, Bacillus sphaericus, Bacillus cereus, Bacillus thuringiensis H-14, B. thuringiensis 1, B. thuringiensis 5, B. thuringiensis var. insraelensis, and Providentia rettgeri was determined. When bacteria were smeared on rabbit skin and tsetse allowed to feed only once on the contaminated area, mortality 8 days postingestion was significantly higher (P less than 0.01) in tsetse fed on P. aeruginosa, S. marcescens, B. thuringiensis 1, and P. rettgeri and increased when tsetse were allowed to feed for the second time on the contaminated skin. With this smear technique, however, mortalities were generally not remarkable. In artificial membrane feeding experiments using low concentrations of bacteria (-10(6)/ml of blood), the B. thuringiensis strains caused low mortality, except B. thuringiensis H-14, which caused 59% mortality. However, at this concentration, P. aeruginosa, S. marcescens, B. cereus, and P. rettgeri caused highly significant (P less than 0.01) mortality (64-96%). When higher concentrations of bacteria (10(7)/ml) were used, all the bacteria tested, except B. sphaericus, caused high mortality ranging from 70 to 98...Continue Reading

Citations

Sep 1, 2005·Experimental & Applied Acarology·Stefania PerrucciDermot J O'Brien
Jul 31, 2012·Journal of Invertebrate Pathology·Illiassou Hamidou SoumanaAnne Geiger
Oct 11, 2005·Journal of Invertebrate Pathology·Stéphane PerchatMichel Gohar

Related Concepts

Metazoa
Use-Effectiveness
Feeding Patterns
Pest Control, Biological
Chinchilla Rabbits
Glossina

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