| serological evidence of morbillivirus infection in polar bears (ursus maritimus) from alaska and russia. | one-hundred-and-ninety-one samples of blood serum collected from 186 polar bears (ursus maritimus) between 1987 and 1992 were analysed for morbillivirus antibodies. the samples were collected in the bering, chukchi and east siberian seas. sixty-eight samples (35.6 per cent) had morbillivirus antibody titres > 5; the percentage of positive samples ranged from 26.2 to 46.2 per cent from year to year. the proportions of adults, sub-adults and cubs which were seropositive were 43.9, 35.7 and 37.9 pe ... | 1996 | 8807784 |
| viral serologic survey of bowhead whales in alaska. | serum samples from 21 of 36 eskimo harvested bowhead whales (balaena mysticetus) were positive by virus neutralization (50% endpoint titer > or = 1:28 and/or 100% endpoint titer > or = 1:20) for antibodies to at least one virus serotype from the calicivirus family, vesicular exanthema of swine virus (vesv) and san miguel sea lion virus (smsv). many animals were positive to more than one serotype when using the spearman-karber (s-k) method for calculating antibody titers. the most common serotype ... | 1998 | 9476224 |
| clinical pathology and assessment of pathogen exposure in southern and alaskan sea otters. | the southern sea otter (enhydra lutris nereis) population in california (usa) and the alaskan sea otter (e. lutris kenyoni) population in the aleutian islands (usa) chain have recently declined. in order to evaluate disease as a contributing factor to the declines, health assessments of these two sea otter populations were conducted by evaluating hematologic and/or serum biochemical values and exposure to six marine and terrestrial pathogens using blood collected during ongoing studies from 1995 ... | 2003 | 14733279 |
| infectious disease and the decline of steller sea lions (eumetopias jubatus) in alaska, usa: insights from serologic data. | serologic data were examined to determine whether infectious disease may have played a role in the decline of steller sea lions (eumetopias jubatus) in the gulf of alaska and aleutian islands, usa. available published data, unpublished data, and recent collections (1997-2000) were compared and reviewed. data were stratified by geography to compare the declining western alaskan population in the aleutian islands through eastern prince william sound to the increasing population in southeastern ala ... | 2005 | 16244061 |
| Serologic surveillance of pathogens in a declining harbor seal (Phoca vitulina) population in Glacier Bay National Park, Alaska, USA and a reference site. | The harbor seal population in Glacier Bay National Park, Alaska, has declined by over 70% since 1992. The reasons for this decline are not known. We examined serum antibodies and feces for evidence of exposure to multiple pathogens in this population. We also studied harbor seals from a reference site on Kodiak Island. In 2007, we found antibodies against Leptospira spp. in 31% of specimens from harbor seals in Glacier Bay, but no detectable serum antibodies in samples from Kodiak. In 2008, no s ... | 2011 | 22102671 |