| bacterial flora of the schistosome vector snail biomphalaria glabrata. | the aerobic heterotrophic bacterial flora in over 200 individuals from 10 wild populations and 3 laboratory colonies of the schistosome vector snail biomphalaria glabrata was examined. internal bacterial densities were inversely proportional to snail size and were higher in stressed and laboratory-reared snails. the numerically predominant bacterial genera in individual snails included pseudomonas, acinetobacter, aeromonas, vibrio, and several members of the enterobacteriaceae. enterobacteriacea ... | 1979 | 539821 |
| hurricanes, climate change and the cholera epidemic in puerto rico of 1855-1856. | hurricanes and global climate changes may affect the environmental factors of cholera dynamics in warm coastal areas, vulnerable to seasonal or sporadic outbreaks. the cholera epidemic of puerto rico in 1855-1856 had a profound effect on the puerto rican society; but it was not influenced by any climatic events, such as preceding hurricanes or storms based on past documentary sources. particularly, the environmental non-toxigenic strains of vibrio cholerae in puerto rican water sources can maint ... | 2008 | 19400536 |
| associated bacterial flora, growth, and toxicity of cultured benthic dinoflagellates ostreopsis lenticularis and gambierdiscus toxicus. | the growth, toxicity, and associated bacterial flora of 10 clonal cultures of the toxic benthic dinoflagellates ostreopsis lenticularis and gambierdiscus toxicus isolated from the coastal waters of southwest puerto rico have been examined. clonal cultures of o. lenticularis grew more rapidly and at broader temperature ranges than those of g. toxicus. all five ostreopsis clones were toxic, while only one of the five gambierdiscus clones was poisonous. the degree of toxicity among poisonous clones ... | 1989 | 2705766 |
| in situ survival of vibrio cholerae and escherichia coli in a tropical rain forest watershed. | for 12 months, vibrio cholerae and fecal coliform densities were monitored along with nine other water quality parameters at 12 sites in a rain forest watershed in puerto rico. densities of v. cholerae and fecal coliforms were not significantly correlated, even though the highest densities of both bacteria were found at a sewage outfall. high densities of v. cholerae were also found at pristine sites at the highest point in the watershed. the density of escherichia coli and v. cholerae in membra ... | 1989 | 2655536 |
| ecology and taxonomy of bacteria attaching to wood surfaces in a tropical harbor. | water, sediment, and wooden pilings, samples of which were collected from a harbor in puerto rico during the course of a long-term study of biofouling of wood treated with creosote and related compounds, were found to support growth of microbial populations, the dominant taxa of which included hyphomicrobium, hyphomonas, pseudomonas, vibrio, and bacillus. new wood exposed to the harbor water was rapidly colonized by hyphomicrobium vulgare. old pilings in an advanced stage of biodeterioration mai ... | 1979 | 487291 |
| allogenic succession of marine bacterial communities in response to pharmaceutical waste. | vibrio spp. predominated in the culturable bacterial community of surface waters of the puerto rico trench at the site of disposal for nearly ten years of pharmaceutical wastes. in this area and surrounding waters as far as 1000 km north of the dumpsite and south into the caribbean sea, vibrio spp. comprised up to 100% of the culturable bacteria, with acinetobacter spp. being the second most prevalent group. pseudomonas spp., reported to be common in these waters a decade earlier, were virtually ... | 1984 | 6501119 |
| gram-positive marine bacteria as a potential resource for the discovery of quorum sensing inhibitors. | inhibitors of bacterial quorum sensing have been proposed as potentially novel therapeutics for the treatment of certain bacterial diseases. we recently reported a marine halobacillus salinus isolate that secretes secondary metabolites capable of quenching quorum sensing phenotypes in several gram-negative reporter strains. to investigate how widespread the production of such compounds may be in the marine bacterial environment, 332 gram-positive isolates from diverse habitats were tested for th ... | 2010 | 21152942 |