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3 January 2020 Insecticidal Activity of Chromobacterium phragmitis, a Recently Described Bacterium from Tidal Marshes
Robert R. Farrar, Dawn E. Gundersen-Rindal, Daniel Kuhar, Michael B. Blackburn
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Abstract

Several isolates of the recently described bacterial species Chromobacterium phragmitis Blackburn et al. were obtained from water collected from low-salinity tidal marshes in Maryland and Virginia. Bacteria were cultured in a liquid medium and applied to artificial diets in the laboratory. One of two Maryland isolates, IIBBL 113-1, was highly toxic to larvae of the cabbage looper Trichoplusia ni (Hübner) and the diamondback moth, Plutella xylostella (L.). The other Maryland isolate, IIBBL 112-1T, and the Virginia isolates were less toxic to these species. Maryland isolates were toxic to larvae of the seedcorn maggot Delia platura (Meigen), while a Virginia isolate, IIBBL 274-1, was of intermediate toxicity against D. platura. The C. phragmitis isolate IIBBL 113-1 was toxic to adults of the red flour beetle Tribolium castaneum (Herbst), while other C. phragmitis isolates had no activity against this species.

Robert R. Farrar, Dawn E. Gundersen-Rindal, Daniel Kuhar, and Michael B. Blackburn "Insecticidal Activity of Chromobacterium phragmitis, a Recently Described Bacterium from Tidal Marshes," Journal of Entomological Science 55(1), 98-104, (3 January 2020). https://doi.org/10.18474/0749-8004-55.1.98
Received: 24 September 2018; Accepted: 28 December 2018; Published: 3 January 2020
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KEYWORDS
Chromobacterium phragmitis
Delia
Plutella
Tribolium
Trichoplusia
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