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Chewing lice Trichodectes pinguis pinguis in Scandinavian brown bears (Ursus arctos)

By Núria Fandos Esteruelas, Jonas Malmsten, Caroline Bröjer, Giulio Grandi, Anders Lindström, Paul Brown, Jon E. Swenson, Alina L. Evans and Jon M. Arnemo

Abstract

In April 2014 and 2015, we noted localized alopecia (neck, forelimbs, and chest) and hyperpigmentation on two adult brown bears (Ursus arctos) captured in central-south Sweden for ecological studies under the Scandinavian Brown Bear Research Project. In spring 2015, a brown bear was shot because of human-wildlife conflict in the same region. This bear also had extensive alopecia and hyperpigmentation. Ectoparasites were collected from the affected skin areas in all three individuals and preserved in ethanol for identification. Based on morphological characteristics, the lice were identified as Trichodectes spp. and Trichodectes pinguis pinguis. To our knowledge, these are the first reported cases of chewing lice in free-ranging brown bears in Scandinavia

Topics: Alopecia, Biting lice, Brown bear, Sweden, Trichodectes pinguis, Ursus arctos, Zoology, QL1-991
Publisher: Elsevier
Year: 2016
DOI identifier: 10.1016/j.ijppaw.2016.02.002
OAI identifier: oai:doaj.org/article:1ab8198fe1f34d958c14ddbb76367597
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