the descriptive epizootiology of phocine distemper in the uk during 1988/89.the 'time, place, individual' approach, widely used in characterising human epidemics, was applied to the 1988 phocine distemper virus (pdv) epizootic affecting north sea seals. estimates of time of death from 157 (69%) of the 228 dead seals necropsied in 1988 indicated that the number of carcasses which were found more than 14 days post mortem increased as the epizootic progressed. although information provided by epizootic curves based on when and where carcasses were reported are affected by ...19921594933
organochlorine and mercury contamination in united kingdom 1988 and 1989 tissue samples were obtained from the grey seal (halichoerus grypus) population found in the dee estuary in the north west of england and from harbour seals (phoca vitulina) from the populations in the wash and north east scotland and analysed for mercury and organochlorine compounds. adult seals from the dee estuary were highly contaminated with mercury and polychlorinated biphenyls (pcbs), and one animal from the dee contained traces of dichlorodiphenyltrichloroethane (ddt), s ...19937682371
antibodies to brucella in marine mammals around the coast of england and wales.following the isolation of previously unrecognised species of brucella from stranded seals and cetaceans in scotland and northern england, a serological survey was carried out to investigate the range of marine mammal species which may have been exposed to brucella species around the coasts of england and wales, the prevalence of infection and the temporal and geographical distribution of seropositive animals. serum collected from 153 stranded marine mammals from the coasts of england and wales ...19979416675
evidence of land-sea transfer of the zoonotic pathogen campylobacter to a wildlife marine sentinel species.environmental pollution often accompanies the expansion and urbanization of human populations where sewage and wastewaters commonly have an impact on the marine environments. here, we explored the potential for faecal bacterial pathogens, of anthropic origin, to spread to marine wildlife in coastal areas. the common zoonotic bacterium campylobacter was isolated from grey seals (halichoerus grypus), an important sentinel species for environmental pollution, and compared to isolates from wild bird ...201525401947
salmonella infection in grey seals (halichoerus grypus), a marine mammal sentinel species: pathogenicity and molecular typing of salmonella strains compared with human and livestock isolates.microbial pollution of the marine environment through land-sea transfer of human and livestock pathogens is of concern. salmonella was isolated from rectal swabs of free-ranging and stranded grey seal pups (21.1%; 37/175) and compared with strains from the same serovars isolated from human clinical cases, livestock, wild mammals and birds in scotland, uk to characterize possible transmission routes using pulsed-field gel electrophoresis and multi-locus variable number of tandem repeat analyses. ...201626768299
renal lesions in baltic grey seals (halichoerus grypus) and ringed seals (phoca hispida botnica).a severe reduction in the populations of grey and ringed seals in the baltic occurred during the 1960s and 1970s. adult animals showed (and still show) a series of lesions inter alia in the female reproductive organs, intestines, integument, kidneys, adrenals, and skulls (the baltic seal disease complex). the morphology and prevalence of light microscopic changes in the kidneys of 76 grey seals and 29 ringed seals collected in the baltic proper and the gulf of bothnia during 1977-1996 are presen ...200111795214
genetic variation in phoca vitulina (the harbour seal) revealed by dna fingerprinting and rapds.genetic variation in two harbour seal (phoca vitulina) populations from the dutch wadden sea and scotland was examined by rapd analysis and dna fingerprinting. for comparison a population of grey seals (halichoerus grypus) was studied. the rapd method revealed a very low number of polymorphic bands. the multilocus dna fingerprinting technique showed very low levels of variation both within and between populations of the harbour seals. for one probe a significant difference in variation between p ...19957615403
selective transfer of persistent organic pollutants and their metabolites in grey seals during lactation.twenty grey seal (halichoerus grypus) mother-pup pairs from the colony of the isle of may (scotland) were sampled at early and late lactation in order to study the transfer of polychlorinated biphenyls (pcbs), polybrominated diphenyl ethers (pbdes) and their metabolites (ho-pcbs and ho-pbdes) as well as organochlorine pesticides (ocps), such as ddt and metabolites (ddxs) and hexachlorobenzene (hcb). the transfer of the naturally produced meo-pbdes was also investigated. generally, concentrations ...201222659007
microsatellite variation in grey seals (halichoerus grypus) shows evidence of genetic differentiation between two british breeding colonies.eight highly variable microsatellite loci were used to examine the genetic variability and differentiation of grey seals (halichoerus grypus) at two widely spaced british breeding colonies. samples were collected from adults and pups on the island of north rona, off the north-west coast of scotland, and on the isle of may, situated at the mouth of the firth of forth on the east coast. highly significant differences in allele frequencies between these two sites were found for all eight loci, indi ...19958564005
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