一株杀蛆细菌的分离与鉴定

蝇属昆虫纲，双翅目，能传播霍乱、伤寒、结核及痢疾等多种疾病的病原菌，种类较多，生长很快，分布广泛，危害严重。化学药剂灭蝇，不仅杀虫效果差，而且环境污染严重。生物防治蝇蛆，不仅能避免污染，而且可在蝇蛆中间不断传染，药效较长。但是，目前在国内外尚未见到有这方面的研究报告，仅见到刘世贵等利用类产碱假单胞菌防治草地蝗虫的报道。

ISOLATION AND IDENTIFICATION OF A KILLING MAGGOTS BACIERIUM

A notably killing maggots bacterium was isolated from natural dead maggots in the manure pits in the countryside of Yancheng. Its pathogenicity was confirmed by the law of KOCK. The results of preliminary bioassay show that the pathogen can infect the larvas of greenbottle flies and other larvas of flies in a certain extent, but can't infect animals and fowls. The G + C content of its DNA is 62.46%. The hybridization ratio of its DNA and the Pseudomonas pseudoalcaligenes' (AS1.1806) is 81.2%. According to Bergey's Manual of Systematic Bacteriology Ninth edition, the strain of the bacterium was primarily identified as Pseudomonas pseudoalcaligenes.