mark-release-recapture methods are used for delineating foraging territories of termite colonies and estimating their foraging populations. in this research, marking of termites was evaluated by the use of two ingested dyes: nile blue (nb) and neutral red (nr). in this experiment, filter paper circles were wetted with 1 ml of each dye at concentrations of 0.1%, 0.25% and 0.5% (treatments) and p...

Twenty-nine extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae strains (14 Klebsiella pneumoniae, 10 Escherichia coli and five Citrobacter diversus) isolated from April to July 1996 from faecal carriers in a surgical intensive care unit at the university hospital of Casablanca (Morocco) were studied. Plasmid content and DNA macrorestriction polymorphism determined by pulsed-fi...

Use of the tyrosine medium in the identification of members of the family Enterobacteriaceae form the basis of this paper. Six hundred and twenty-three strains were tested for their property of tyrosine degradation. Three hundred and seventy-two strains were positive in 24 h and an additional eight strains were positive in 48 to 72 h. These positive strains consisted of all 344 strains of the P...

We investigated the bacterial gut microbiota from 32 colonies of wood-feeding termites, comprising four Microcerotermes species (Termitidae) and four Reticulitermes species (Rhinotermitidae), using terminal restriction fragment length polymorphism analysis and clonal analysis of 16S rRNA. The obtained molecular community profiles were compared statistically between individuals, colonies, locati...

Characteristics and antibiotic sensitivities of Citrobacter diversus are described, and a minimal number of diagnostic tests to identify this organism in a clinical laboratory are suggested.