Synopsis of Biological Data on the Chum Salmon, Oncorhynchus keta
Synopsis of Biological Data on the Chum Salmon, Oncorhynchus keta
Synopsis of Biological Data on the Chum Salmon, Oncorhynchus keta
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Table 18.--Parasites <str<strong>on</strong>g>of</str<strong>on</strong>g> chum salm<strong>on</strong> (authorities: Uzmann and Hesselholt, 1957; Fisheries Agency <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
Japan, 1959; Bykhovskaya-Pavlovskaya et al . , 1962; Akhmerov, 1963; Becker and Kat z, 1965)<br />
Phylum Class<br />
Thallophyta<br />
Protozoa Flagellata<br />
Cnidosporida<br />
Ciliata<br />
Platyhelmin<strong>the</strong>s Cestoidea<br />
Trematoda<br />
Nema<strong>the</strong>lmin<strong>the</strong>s Nematoda<br />
Saprolegnia<br />
Cryptobia.<br />
Henneguya, Myxosoma, Myxidium .<br />
Tripartiella and Trichodina.<br />
Genus<br />
Eubothrium, Proteocephalus, Pelichnibothrium, Nybelinia ,<br />
Hepatoxyl<strong>on</strong>, Scolex, Diphyllobothrium, Phyllobothrium, and<br />
Triaenophorus.<br />
Tubulovpsicula, Brachyphallus, Lecithaster, Isoparorchis,<br />
Hemiurus, Parahemiurus, and Bucephalopsis .<br />
C<strong>on</strong>tracaecum, Anisakis, Phil<strong>on</strong>ema, Qystidicola, Rhaphidascaris ,<br />
and Porrocaecum.<br />
Acanthocephala Echinorhynchus, Bolbosoma, Corynosoma, Rhadinorhynchus,<br />
Metechinorhynchus, and Acanthocephalos .<br />
Arthropoda Crustacea Lepeoph<strong>the</strong>irus, Ergasilus, Salmincola, Argulus .<br />
Annelida Piscicolidae Piscicola.<br />
Table 19.--Degree <str<strong>on</strong>g>of</str<strong>on</strong>g> parasitic infecti<strong>on</strong> in summer and autumn chum salm<strong>on</strong> from<br />
tributaries <str<strong>on</strong>g>of</str<strong>on</strong>g> <strong>the</strong> Amur River (Akhmerov, 1963); ranges are for samples from different<br />
tributaries<br />
Parasite<br />
Brachyphallus crenatus<br />
Lecithaster gibbosus<br />
Phyllobothrium caudatum<br />
Scolex pleur<strong>on</strong>ectis<br />
Nybelinia surm<strong>on</strong>icola<br />
Eubothrium erassum:<br />
Imago<br />
Plerocercoid<br />
Echinorhynchus gadi<br />
Bolbosoma coen<str<strong>on</strong>g>of</str<strong>on</strong>g>orme<br />
Anisakis sp. (larvae)<br />
C<strong>on</strong>tracaecum aduncum<br />
C<strong>on</strong>tracaecum sp. (larvae)<br />
Surmner chum salm<strong>on</strong> Aut umn chum salm<strong>on</strong><br />
(436 fish)<br />
(179 f ish )<br />
Fish Parasites Fish Parasites<br />
infected per fish infected per fish<br />
Percent<br />
Mean<br />
No.<br />
Range<br />
No . Per cent<br />
Mean<br />
No.<br />
Range<br />
No.<br />
2- 32 1-21 1- 100 5- 66 6- 33 1-200<br />
5-7<br />
96-100<br />
36-93<br />
1-11<br />
2-9<br />
2-36<br />
2- 4<br />
2-23<br />
31-72<br />
1- 9<br />
5- 21 1-40 13<br />
90- 680 7- 1000 100<br />
1- 6 1-27 39- 98<br />
1- 2<br />
1- 2<br />
3- 9<br />
1- 8<br />
3- 14<br />
2- 3<br />
30<br />
1-3<br />
1- 3<br />
1- 100<br />
1- 22<br />
1- 58<br />
1- 8<br />
1- 2<br />
4<br />
4- 26<br />
14-45<br />
6- 7<br />
7-18<br />
35- 81<br />
4-7<br />
2- 13<br />
2-16<br />
40- 860 9- 5000<br />
3- 8 1-28<br />
1<br />
4- 10 1-38<br />
26 1-400<br />
1<br />
1-7 1-18<br />
2- 3 1-7<br />
1-3 1-3<br />
2 1-3
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