title: Chewing Lice of Swan Geese (Anser cygnoides): New Host-Parasite Associations.
abstract: Chewing lice (Phthiraptera) that parasitize the globally threatened swan gooseAnser cygnoideshave been long recognized since the early 19th century, but those records were probably biased towards sampling of captive or domestic geese due to the small population size and limited distribution of its wild hosts. To better understand the lice species parasitizing swan geese that are endemic to East Asia, we collected chewing lice from 14 wild geese caught at 3 lakes in northeastern Mongolia. The lice were morphologically identified as 16Trinoton anserinum(Fabricius, 1805), 11Ornithobius domesticusArnold, 2005, and 1Anaticola anseris(Linnaeus, 1758). These species are known from other geese and swans, but all of them were new to the swan goose. This result also indicates no overlap in lice species between older records and our findings from wild birds. Thus, ectoparasites collected from domestic or captive animals may provide biased information on the occurrence, prevalence, host selection, and host-ectoparasite interactions from those on wild hosts.
authors.affiliation: Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, USA.|U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, Vallejo, California 94592, USA.
authors.forename: Chang-Yong
authors.initials: CY
authors.lastname: Choi
authors.affiliation: U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, Vallejo, California 94592, USA.
authors.forename: John Y
authors.initials: JY
authors.lastname: Takekawa
authors.affiliation: U.S. Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland 20705, USA.
authors.forename: Diann J
authors.initials: DJ
authors.lastname: Prosser
authors.affiliation: U.S. Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, Vallejo, California 94592, USA.
authors.forename: Lacy M
authors.initials: LM
authors.lastname: Smith
authors.affiliation: U.S. Geological Survey, Alaska Science Center, Anchorage, Alaska 99508, USA.
authors.forename: Craig R
authors.initials: CR
authors.lastname: Ely
authors.affiliation: Department of Bioscience, University of Aarhus, Kalø, Rønde, DK-8410, Denmark.
authors.forename: Anthony D
authors.initials: AD
authors.lastname: Fox
authors.affiliation: Department of Environmental Bio-Technology, Chinese Academy of Sciences, Beijing 100085, People's Republic of China.
authors.forename: Lei
authors.initials: L
authors.lastname: Cao
authors.affiliation: Department of Environmental Bio-Technology, Chinese Academy of Sciences, Beijing 100085, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: Wildlife Science and Conservation Center, Ulaanbaatar 210351, Mongolia.
authors.forename: Nyambayar
authors.initials: N
authors.lastname: Batbayar
authors.affiliation: Ornithology Laboratory, Institute of Biology, Mongolian Academy of Sciences, Ulaanbaatar 210351, Mongolia.
authors.forename: Tseveenmayadag
authors.initials: T
authors.lastname: Natsagdorj
authors.affiliation: Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma 73019, USA.
authors.forename: Xiangming
authors.initials: X
authors.lastname: Xiao
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000469:parasitology*; D005777:Geese; D010373:Lice Infestations / Q000469:parasitology / Q000662:veterinary*; D008853:Microscopy; D008986:Mongolia; D008003:Phthiraptera / Q000033:anatomy & histology* / Q000145:classification*
keywords: Anaticola anseris; Ornithobius domesticus; Trinoton anserinum; chewing louse; swan goose