title: The efficacy of Bacillus thuringiensis var. israelensis against larvae of the blackfly Odagmia ornata (Meig.) (Simuliidae) at low temperatures.
abstract: The effect of the suspension of Bacillus thuringiensis var. israelensis spores on larvae of the blackfly Odagmia ornata was studied in the laboratory and under field conditions of a natural biotope in southern Bohemia. The preparation Moskitur was used and its effect was tested in laboratory at temperatures 0.1-2.9 degrees C and 17-19 degrees C. Although O. ornata larvae were able to filter feed on a lethal dose of the preparation even at a lower temperature than 2.9 degrees C, no marked manifestation of mortality was observed at low temperatures in comparison with a control sample.
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis; D001427:Bacterial Toxins / Q000494:pharmacology*; D005069:Evaluation Studies as Topic; D007928:Lethal Dose 50; D010572:Pest Control, Biological; D011498:Protein Precursors / Q000494:pharmacology*; D012843:Simuliidae / Q000378:metabolism / Q000382:microbiology / Q000502:physiology; D013171:Spores, Bacterial; D013696:Temperature; D013997:Time Factors
chemical_list: C029103:Bacillus thuringiensis protoxin; D001427:Bacterial Toxins; D011498:Protein Precursors