Salvelinema salmonicola (Nematoda, Cystidicolidae) : Heavy Infection in Lacustrine Sockeye Salmon Oncorhynchus nerka from Northern Japan, with plication of the Host's Feeding Habits

Biogeography Volume 12 Page 25-28 published_at 2010-10-20
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Title ( eng )
Salvelinema salmonicola (Nematoda, Cystidicolidae) : Heavy Infection in Lacustrine Sockeye Salmon Oncorhynchus nerka from Northern Japan, with plication of the Host's Feeding Habits
Creator
Katahira Hirotaka
Source Title
Biogeography
Volume 12
Start Page 25
End Page 28
Abstract
Six hundred fifteen specimens of the cystidicolid nematode Salvelinema salmonicola (Ishii, 1916) were found in the swimbladder of a sockeye salmon Oncorhynchus nerka from Lake Toya, central Hokkaido, northern Japan. The stomach of this fish contained many, benthic gammaridean amphipods Jesogammarus jesoensis, which are most likely to serve as an intermediate host for S. salmonicola in the lake. While sockeye salmon are known to exclusively prey on small fish when the zooplankton biomass remains low in this locality, the present findings of S. salmonicola and J. jesoensis indicate that these salmon feed on benthic amphipods as well and get infected with the nematode.
Keywords
Salvelinema salmonicola
fish parasite
Oncorhynchus nerka
sockeye salmon
Jesogammarus jesoensis
amphipod
NDC
Biology [ 460 ]
Language
eng
Resource Type journal article
Publisher
日本生物地理学会
Date of Issued 2010-10-20
Rights
論文ファイルの利用は著作権の範囲内に限り認められます。
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1345-0662
[NCID] AA11381320