Guide to the Parasites of Fishes of Canada Part V: Nematoda

Abstract

Keys are provided for the identification of the nematode species known to be parasites of Canadian fishes. The nematodes are described and illustrated, with a note of the site(s) they occupy in named fish host(s) and their geographical distribution. Parasite records are given by author and date, full details of which can be found in a bibliography of over 800 references. Diagnoses and keys for 22 Families, 47 genera and 88 species of nematodes are also given, together with a glossary of terms, a host-parasite list, and indices to both nematode parasites and hosts.

Pseudopecoelus mccauleyi n. sp. and Podocotyle sp. (Digenea: Opecoelidae) from the deep waters off Oregon and British Columbia with an updated key to the species of Pseudopecoelus von Wicklen, 1946 and checklist of parasites from Lycodes cortezianus (Perciformes: Zoarcidae)

“…H.P. Arai (see Arai 1967, 1989; we found these specimens to be P. mccauleyi n. sp. These 8 slides (6 of sections) of P. mccauleyi n. sp.…”

“…of Biology, Univ. of Calgary, Alberta, Canada) to the BMNH (see Arai 1967Arai , 1969Arai , 1989. Gibson confirmed (pers.…”

“…Intestine Off Curaçao in Caribbean Sea Nahhas and Cable (1964) Pseudopecoelus japonicus (Yamaguti, 1938) Arai (1967Arai ( , 1969Arai ( , 1989 3 ); Moser (1976 3 , 1983 3 ); Margolis and Arthur (1979 3 These references are host-parasite checklists and should not be considered as original records. 4 Gibson (1996, p. 165), in his key to the species of Pseudopecoelus von Wicklen, 1946 from Canadian waters, examined specimens he tentatively identified as P. japonicus collected from Aprodon (=Lycodes) cortezianus that were in the BM(NH) and originally collected by Dr.…”

Unprecedented widespread occurrence of Pink Salmon Oncorhynchus gorbuscha in Ireland in 2017

“…Analyses of the eyes, gills ( n = 16), gastrointestinal tracts ( n = 15) and swim bladders ( n = 11) for helminth parasites recorded a total of four taxa: the salmonid swim bladder nematode Cystidicola farionis , two unidentified species of intestinal nematode and an unidentified intestinal digean trematode. Cystidicola farionis occurs in a variety of salmonids in the Northern Hemisphere including Ireland (Arai & Smith, ; Byrne et al ., ). No helminth parasites were evident in the eyes or gills.…”

Infection rates and prevalence of metazoan parasites of the non-native round goby (Neogobius melanostomus) in the Baltic Sea

“…foregut, head and tail structures of nematodes in Fagerholm (1982) and Moravec (1994). Acanthocephalans were identified according to a key (Arai, 1989) and descriptions by Valtonen (2012).…”