Respiratory Mites (Orthohalarachne diminuata) and beta-hemolytic Streptococci-Associated Bronchopneumonia Outbreak in South American Fur Seal Pups (Arctocephalus australis)

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dc.contributor.authorSeguel, Mauricio
dc.contributor.authorGutierrez, Josefina
dc.contributor.authorHernandez, Carlos
dc.contributor.authorMontalva, Felipe
dc.contributor.authorVerdugo, Claudio
dc.date.accessioned2024-01-10T14:21:34Z
dc.date.available2024-01-10T14:21:34Z
dc.date.issued2018
dc.description.abstractAlthough mites of the Orthohalarachne genus are common parasites of otariids, their role as agents of disease and in causing population-level mortality is unknown. In the austral summer of 2016, there was an increase in mortality among South American fur seal (Arctocephalus australis) pups at Guafo Island, Northern Chilean Patagonia. Pups found dead or terminally ill had moderate to marked, multifocal, mucopurulent bronchopneumonia associated with large numbers of respiratory mites (Orthohalarachne diminuata) and rare Gram-positive cocci. In lung areas less affected by bronchopneumonia, acute interstitial pneumonia with marked congestion and scant hemorrhage was evident. Bacteria from pups dying of bronchopneumonia were isolated and identified as Streptococcus marimammalium and Streptococcus canis. Respiratory mites obstructed airflow, disrupted airway epithelial lining, and likely facilitated the proliferation of pathogenic b-hemolytic streptococci, leading to severe bronchopneumonia and death of fur seal pups. An abrupt increase in sea surface temperature in Guafo Island corresponded to the timing of the bronchopneumonia outbreak. The potential role of environmental factors in the fur seal pup mortality warrants further study.
dc.description.funderRufford Small Grant Foundation
dc.description.funderMorris Animal Foundation
dc.description.funderSociety for Marine Mammalogy Small Grants
dc.description.funderInstitutional Animal Use and Care Committee of the University of Georgia
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.7589/2017-09-214
dc.identifier.eissn1943-3700
dc.identifier.issn0090-3558
dc.identifier.pubmedidMEDLINE:29369727
dc.identifier.urihttps://doi.org/10.7589/2017-09-214
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79710
dc.identifier.wosidWOS:000429465500021
dc.information.autorucCiencias Biológicas;Montalva F ;S/I;205500
dc.issue.numero2
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final385
dc.pagina.inicio380
dc.publisherWILDLIFE DISEASE ASSOC, INC
dc.revistaJOURNAL OF WILDLIFE DISEASES
dc.rightsregistro bibliográfico
dc.subjectArctocephalus australis
dc.subjectbronchopneumonia
dc.subjectGuafo Island
dc.subjectmarine mammals
dc.subjectOrthohalarachne
dc.subjectStreptococcus
dc.subjectGUAFO ISLAND
dc.subjectHALARACHNIDAE
dc.subjectINFECTION
dc.subjectMORTALITY
dc.subjectGRACILIS
dc.subject.ods14 Life Below Water
dc.subject.odspa14 Vida submarina
dc.titleRespiratory Mites (Orthohalarachne diminuata) and beta-hemolytic Streptococci-Associated Bronchopneumonia Outbreak in South American Fur Seal Pups (Arctocephalus australis)
dc.typeartículo
dc.volumen54
sipa.codpersvinculados205500
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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