1887

Abstract

Numerical taxonomic analysis was performed on 247 bacterial strains isolated from the Northwest Gulf of Alaska in October 1975 and on 1010 bacterial strains isolated from the Northeast Gulf of Alaska in March 1976. Using the Jaccard similarity coefficient ( ) and single linkage clustering, 24 clusters (containing three or more strains) from the Northeast Gulf isolates and 12 clusters from the Northwest Gulf isolates were found at the 70% similarity level. The dominant organisms in the Northeast Gulf of Alaska were identified as being in the group; these organisms were not found in the Northwest Gulf. The physiological and biochemical characteristics of the isolates in the clusters identified as belonging to the group did not permit a clear separation of the two genera. Several clusters were tentatively identified as belonging to the - group from samples collected from both the Northeast and Northwest Gulf regions. A high proportion of the isolates from both regions were pigmented; several clusters of occurred. Strains belonging to the genus were isolated from the Northwest Gulf but not from the Northeast Gulf of Alaska. Most clustered strains from the Northeast Gulf were eurytolerant, did not require growth factors and utilized a wide variety of substrates. Most isolates from the Northwest Gulf of Alaska were psychrotrophic and restricted to growth at salinities approximating that of seawater; many isolates from the Northwest Gulf demonstrated complex nutritional requirements. Many strains of Gram-negative pleomorphic rods isolated from both regions could not be identified.

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1980-09-01
2021-07-29
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