Microbe inhibition by Tribolium flour beetles varies with beetle species, strain, sex, and microbe group

• Published in: Journal of chemical ecology Vol. 28; no. 6; pp. 1183 - 1190
• Main Authors: PRENDEVILLE, Holly R, STEVENS, Lori
• Format: Journal Article
• Language: English
• Published: New York, NY Springer 01.06.2002; Springer Nature B.V
• Subjects: Animal and plant ecology; Animal reproduction; Animal, plant and microbial ecology; Animals; Autoecology; Biological and medical sciences; Environmental factors; Female; Fundamental and applied biological sciences. Psychology; Host-Parasite Interactions; Insects; Male; Predation; Predators; Protozoa. Invertebrata; Sex Factors; Species Specificity; Tribolium - microbiology; Tribolium - physiology; Tribolium confusum; Animal microorganism relation; Temperature; Coleoptera; Insecta; Interspecific comparison; Sex; Environmental factor; Stored food product; Flour; Tenebrionidae; Pest; Arthropoda; Humidity; Bacteria; Defense mechanism; Tribolium castaneum; Inhibition; Predator; Invertebrata
• ISSN: 0098-0331; 1573-1561
• DOI: 10.1023/A:1016281600915

Tribolium flour beetles produce defensive compounds, including quinones, putatively aimed at deterring predators and inhibiting microbes. Here we examine how effective the defensive secretions of Tribolium confusum and T. castaneum are at inhibiting growth of various microbes and how this varies with species, geographic strain, and sex of the beetles. We explore differences at both the kingdom and species level of common flour microbes in their susceptibility to defensive compounds. Beetle species and strains vary in their ability to inhibit microbial growth. In addition, microbes vary in their sensitivity to the beetles' defense compounds. The capability to suppress microbial growth is likely under stabilizing selection with optimum quinone production varying among populations and may be dependent on several environmental factors including temperature, humidity, and predators.