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Determination of Tear Production and Intraocular Pressure With Rebound Tonometry in Wild Humboldt Penguins (Spheniscus humboldti)

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dc.contributor.author Sheldon, J. D.
dc.contributor.author Adkesson, M. J.
dc.contributor.author Allender, M. C.
dc.contributor.author Jankowski, G.
dc.contributor.author Langan, J.
dc.contributor.author Cardena, M.
dc.contributor.author Cardenas-Alayza, S.
dc.date.accessioned 2019-01-25T16:36:28Z
dc.date.available 2019-01-25T16:36:28Z
dc.date.issued 2017
dc.identifier.uri https://hdl.handle.net/20.500.12866/4838
dc.description.abstract Tear production and intraocular pressures (IOPs) were determined in 38 and 102 wild Humboldt penguins (Spheniscus humboldti), respectively, from the Punta San Juan Marine Protected Area in Ica, Peru. Tear production was measured by Schirmer tear test, and IOP was measured with a TonoVet rebound tonometer. Adult (n = 90) and chick (n = 12) penguins were sampled from 2 different beaches (north and south facing) during 2 sampling years (2010 and 2011). Results showed a mean +/- SD (range) of 9 +/- 4 (2-20) mm/min for tear production and 28 +/- 9 (3-49) mm Hg for IOP. Tear production in penguins differed between beach and sex, whereas IOP differed between age, year, and beach. The IOPs were negatively correlated with packed cell volume. Tear production and IOP values had greater variation in this population than it has in other avian species. Previous investigations of IOP and tear production in Spheniscus species were conducted with birds housed under professional care in artificial marine and freshwater environments. This is the first study, to our knowledge, investigating tear production and IOP in wild penguins and establishes valuable reference intervals for this species. en_US
dc.language.iso eng
dc.publisher BioOne
dc.relation.ispartof urn:issn:1938-2871
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject water en_US
dc.subject health en_US
dc.subject Veterinary Sciences en_US
dc.subject air en_US
dc.subject avian en_US
dc.subject flamingos phoenicopterus-ruber en_US
dc.subject flock en_US
dc.subject Humboldt penguin en_US
dc.subject intraocular pressure en_US
dc.subject rebound tonometry en_US
dc.subject Schirmer tear test en_US
dc.subject Spheniscus humboldti en_US
dc.subject tonovet(r) en_US
dc.subject vision en_US
dc.title Determination of Tear Production and Intraocular Pressure With Rebound Tonometry in Wild Humboldt Penguins (Spheniscus humboldti) en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.1647/2015-134
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.02.00 es_PE
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#4.03.00
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#3.02.11


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