RESUMO
At 15 degrees C, San Miguel sea lion virus infected fish (Girella nigricans), producing 10(7).6 TCID50 per gram of spleen, replicated in Vero cells (10(8) TCID50/gm) and retained viability after 14 days exposure to salt water (10(5) TCID50/ml dropped to 10(2).
Assuntos
Caliciviridae/crescimento & desenvolvimento , Doenças dos Peixes/microbiologia , Peixes/microbiologia , Infecções por Picornaviridae/veterinária , Animais , Linhagem Celular , Chlorocebus aethiops , Água do Mar , Baço/microbiologia , Microbiologia da ÁguaRESUMO
A new serotype of calicivirus, designated as San Miguel sea lion virus type 6 (SMSV-6), was isolated from vesicular lesions on the flipper of a California sea lion pup. Serologic studies show that SMSV-6 neutralizing antibodies (SN) occur frequently among California sea lions and occasionally among northern fur seals. Feral swine, 1- to 6-week elephant seal pups and grey whales tested negative for SMSV-6 antibody.
Assuntos
Caliciviridae/isolamento & purificação , Caniformia/microbiologia , Infecções por Picornaviridae/veterinária , Focas Verdadeiras/microbiologia , Animais , Anticorpos Antivirais/análise , Antígenos Virais/análise , Caliciviridae/classificação , Caliciviridae/imunologia , Infecções por Picornaviridae/microbiologiaRESUMO
A 4-year study of Northern fur seal (Callorhinus ursinus) leptospirosis in the Bering Sea has shown that in newborn pups Leptospira pomona is associated with a multiple hemorrhage syndrome. Adults may develop an interstitial nephritis and shed organisms in the urine. The hed prevalence, based on microscopic slide agglutination tests, ranged between 7.0% and 15.4% for adult females and 3-4 year old bachelor bulls, whereas nursing pups averaging 4 months of age had a prevalence of 2%. These results are used to conclude that leptospirosis is not acquired primarily on the breeding rookeries but rather is more frequently acquired subsequent to the purps leaving the rookeries, presumably through the food chain during their first pelagic cycle.
