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Neoechinorhynchus rutili (Müller, 1780) (Acanthocephala) in the whitefish Coregonm nasus (Pallas) sensu Svärdson from the Bay of Bothnia
Author(s) -
VALTONEN E. TELLERVO
Publication year - 1979
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1979.tb00147.x
Subject(s) - bay , acanthocephala , biology , sensu , intermediate host , ostracod , zoology , fishery , helminths , ecology , host (biology) , oceanography , genus , geology
. The occurrence of Neoechinorhynchus rutili (Müller, 1780) in the white‐fish Coregonus nasus (Pallas) sensu Svardson from the Bay of Bothnia was investigated in 772 fish obtained as monthly or bimonthly samples during the period July 1975‐January 1977. In both years most parasites were found only in November and December. All of the 402 parasites found were immature and very small. Most of them were in the first third of the intestine, and only a few were attached to the mucosa. No encysted parasites were found in other any tissues. It is thus suggested that the whitefish of the Bay of Bothnia is only an accidental host for N. rutili . A clear correlation was found between the importance of ostracods in the diet and the occurrence of N. rutili . The first intermediate host in the Bay of Bothnia was shown to be an ostracod, Candona neglecta (Sars.).