| new distribution records of echinococcus multilocularis in the brown lemming from barrow, alaska, usa. | we identified echinococcus multilocularis for the first time in brown lemmings (lemmus trimucronatus) from barrow, alaska, usa. of 467 brown lemmings trapped between 1995 and 2000, two males and two females (0.9%; 95% confidence interval=0.9+/-0.9%) were found to be infected with metacestodes of e. multilocularis. no metacestodes were found in 17 collared lemmings (dicrostonyx rubricatus) also trapped at barrow. in humans, e. multilocularis causes alveolar echinococcosis, which is potentially fa ... | 2005 | 15827234 |
| significant morphological but little molecular differences between trypanosoma of rodents from alaska. | we examined blood smears of 173 rodents and 33 shrews captured at 4 sites in the gates of the arctic national park, northern alaska, in summer 2002. trypanosoma spp. were detected in the plasma of 5 microtus oeconomus, 4 microtus miurus, and 1 lemmus trimucronatus. the trypomastigote morphology from different individuals of m. oeconomus caught at the same site and of m. miurus from different sites varied significantly. the 4 dna sequences obtained from the blood smear positive samples contained ... | 2005 | 15856904 |