Abstract
Two spiroplasma strains (B31 and B39) recovered from diseased honey-bees (Apis mellifera) in southwestern France were similar in biochemical, serological and pathological properties. The organisms grew at 30 degrees C, required cholesterol for growth, fermented glucose, catabolized arginine and produced a film and spot reaction. The two spiroplasmas were serologically indistinguishable but were related to serogroup IV spiroplasmas, which had been previously isolated from flower surfaces and from insects. The isolates were distinct from the three previously established species of Spiroplasma and from other presently known serogroups. The G + C content of the DNA from strain B31 was 30 +/- 1 mol %. Both B31 and B39 strains were associated with a lethal infection ("May disease") of the honey-bee. On the basis of the characterization presented here, it is proposed that these spiroplasmal pathogens of bees and allied strains be classified as a new species, Spiroplasma apis, the type strain of which is B31 (ATCC 33834).
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