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dc.contributor.authorWęgrzyn, Michał Hubert
dc.contributor.authorWietrzyk-Pełka, Paulina
dc.contributor.authorGalanty, Agnieszka
dc.contributor.authorCykowska-Marzencka, Beata
dc.contributor.authorSundset, Monica Alterskjær
dc.date.accessioned2019-10-04T09:08:28Z
dc.date.available2019-10-04T09:08:28Z
dc.date.issued2019-01-22
dc.description.abstractPrevious studies of Eurasian tundra reindeer (<i>Rangifer tarandus tarandus</i>) in Norway indicate that their rumen microbiota play a key role in degrading lichen secondary metabolites. We investigated the presence of usnic acid and atranorin in faecal samples from Svalbard reindeer (<i>R. tarandus platyrhynchus</i>). Samples were collected in Bolterdalen valley together with vegetation samples from the study site. The mesic tundra in this area was dominated by vascular plants (59% of vegetation cover). Bryophytes (16%) and lichens (25%) were also present. Qualitative and quantitative analyses of usnic acid and atranorin in lichen and faeces samples were performed using high-performance liquid chromatography. Contents of atranorin averaged 12.49 ± 0.41 mg g<sup>–1</sup> in the thalli of <i>Stereocaulon alpinum</i>, while the average level of usnic acid was lowest in <i>Cladonia mitis</i> (12.75 ± 2.86 mg g<sup>–1</sup>) and highest in <i>Flavocetraria cucullata</i> (34.87 ± 0.47 mg g<sup>–1</sup>). Atranorin and usnic acid were detected in the faecal samples, averaging 0.41 ± 0.53 and 0.74 ± 1.11 (mean ± SD) mg g<sup>–1</sup> dry matter, respectively. The presence of lichen secondary compounds in faeces from Svalbard reindeer shows that lichens are indeed included in their diet, although probably in small amounts because of depleted pastures. Contrary to previous findings in reindeer on mainland Norway, atranorin and usnic acid are not completely degraded or absorbed in Svalbard reindeer. To elucidate the mechanisms behind detoxification of lichen secondary compounds in reindeer, more research is needed on their respective rumen microbiomes and digestive enzymes.en_US
dc.description.sponsorshipInstitute of Botany of the Jagiellonian University W. Szafer Institute of Botany of the Polish Academy of Sciencesen_US
dc.descriptionSource at <a href=http://dx.doi.org/10.33265/polar.v38.3375>http://dx.doi.org/10.33265/polar.v38.3375</a>.en_US
dc.identifier.citationWęgrzyn, M.H., Wietrzyk-Pełka, P., Galanty, A., Cykowska-Marzencka, B. & Sundset, M.A. (2019). Incomplete degradation of lichen usnic acid and atranorin in Svalbard reindeer (<i>Rangifer tarandus platyrhynchus</i>). <i>Polar Research, 38</i>, 3375. http://dx.doi.org/10.33265/polar.v38.3375en_US
dc.identifier.cristinIDFRIDAID 1663125
dc.identifier.doi10.33265/polar.v38.3375
dc.identifier.issn0800-0395
dc.identifier.issn1751-8369
dc.identifier.urihttps://hdl.handle.net/10037/16326
dc.language.isoengen_US
dc.publisherNorwegian Polar Instituteen_US
dc.relation.journalPolar Research
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Zoophysiology and comparative physiology: 483en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Zoofysiologi og komparativ fysiologi: 483en_US
dc.subjectLichen secondary metabolitesen_US
dc.subjectruminanten_US
dc.subjectfaecal samplesen_US
dc.subjectSpitsbergenen_US
dc.subjectArcticen_US
dc.titleIncomplete degradation of lichen usnic acid and atranorin in Svalbard reindeer (Rangifer tarandus platyrhynchus)en_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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