| fluoride exposure and selected characteristics of eggs and bones of the herring gull (larus argentatus) and the common gull (larus canus). | fluorine concentrations were determined in the shell of 285 herring gull eggs (larus argentatus) and 120 common gull eggs (larus canus), collected may 1991 to 1993, from breeding colonies exposed to emissions from two norwegian primary aluminum smelters located at karmøy and sunndal, and from unexposed reference localities in eigersund, sola, and stavanger. volume-index, shell thickness, thickness-index, and fertilization of the eggs also were monitored. in both species, the shell fluorine conce ... | 1996 | 8722255 |
| avian wildlife reservoir of campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. in norway. | cloacal swabs from 540 wild-living birds were cultured for campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. the carrier rates detected were as follows: c. fetus subsp. jejuni, 28.4%; yersinia spp., 1.2%; and salmonella spp., 0.8%. all birds were apparently healthy when captured. c. fetus subsp. jejuni was isolated from 11 of the 40 bird species examined. among birds inhabiting the city of oslo, the highest isolation rate was found in crows (corvus corone cornix) (89.8%), fol ... | 1983 | 6338824 |