Mar, 1994
EVOLUTIONARY CHANGES OF DISPERSIVENESS IN EXPERIMENTAL BACTERIAL-POPULATIONS
OIKOS
- ,
- Volume
- 69
- Number
- 2
- First page
- 217
- Last page
- 223
- Language
- English
- Publishing type
- Research paper (scientific journal)
- Publisher
- MUNKSGAARD INT PUBL LTD
An experimental investigation of the evolution of dispersiveness was carried out using two strains of Eschericia coli: one growing homogeneously (i.e., dispersed growth) in liquid medium in a test-tube culture, the other growing with weak attachment to test-tube walls. Experiments were designed to explore the conditions under which the dispersive or adhesive (resident) traits of bacterial cells can evolve, with a particular focus on the trade-off of the advantage of avoiding intraspecific competition versus the ability to reduce density-independent mortality. Experimental results suggest that dispersiveness of a bacterial population can change through selection of a mutant with higher fitness caused by either avoiding intraspecific competitive pressure or by reducing mortality, in a manner dependent on prevailing ecological conditions.
- Link information
- ID information
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- ISSN : 0030-1299
- Web of Science ID : WOS:A1994NA70300008