Record Display for the EPA National Library Catalog


Main Title Studies on the Interactions of Bacteria and Nematodes.
Author Wil, Gerald R. ; Josh, Madan M. ; Metcal, Joanne ;
CORP Author Auburn Univ., Ala. Water Resources Research Inst.
Year Published 1973
Report Number WRRI-Bull-10; OWRR-A-016-ALA; 13001,; A-016-ALA(3)
Stock Number PB-222 494
Additional Subjects ( Nematodes ; Bacteria) ; Food supply ; Animal behavior ; Animal migrations ; Bacteriophages ; Vibrio ; Pseudomonas ; Temperature ; pH ; Oxygen consumption ; Predation
Library Call Number Additional Info Location Last
NTIS  PB-222 494 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 102p
Interactions of microbes common to water resources were investigated. Nematodes were able to distinguish between food bacteria and non-food bacteria, and between bacteria and lake bottom mud. They preferentially migrated to and fed on a Vibrio species at various distances, temperatures, and pH values. Migration to food bacteria increased with an increase in bacterial concentration. Resting and dead bacteria did not attract nematodes. Nematodes migrated to food bacteria even when they had to move into areas having reduced oxygen tensions or under a barrier to reach bacteria. Nematodes were not attracted by carbon dioxide. They did migrate, however, to a dialysate from food bacteria. Nematode predation resulted in greater reductions in viable numbers of bacteria than total numbers of bacteria. Interactions between bacteria and bacteriophage occurred under a variety of temperature and pH values. P. aeruginosa in the presence of its phage utilized oxygen at a greater rate than in the absence of phage. Nematodes were observed to disseminate bacteriophage over a surface seeded with host bacteria.