Hysterothylacium aduncum (Rudolphi, 1802) Deardorff & Overstreet 1981

** Hysterothylacium aduncum (Rudolphi, 1802) Deardorff & Overstreet, 1981 Synonyms: Thynnascaris adunca (Rudolphi, 1802) Hartwich, 1957; Contracaecum aduncum (Rudolphi, 1802) Baylis, 1920; Contracaecum gadi (O. F. Müller, 1777) Johnston & Mawson, 1945; Contracaecum clavatum (Rudolphi, 1809)...

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Main Authors: Arai, Hisao P., Smith, John W.
Format: Text
Language:unknown
Published: Zenodo 2016
Subjects:
Aho
Online Access:https://dx.doi.org/10.5281/zenodo.5626927
https://zenodo.org/record/5626927
Description
Summary:** Hysterothylacium aduncum (Rudolphi, 1802) Deardorff & Overstreet, 1981 Synonyms: Thynnascaris adunca (Rudolphi, 1802) Hartwich, 1957; Contracaecum aduncum (Rudolphi, 1802) Baylis, 1920; Contracaecum gadi (O. F. Müller, 1777) Johnston & Mawson, 1945; Contracaecum clavatum (Rudolphi, 1809) Baylis, 1920 Description (after Moravec 2013). With characteristics of the genus. Females larger than males. Lips of approximately equal size, with wide membranous flanges broadest near their base; dorsal lip with two subdorsal papillae; each subventral lip with one double subventral papilla and small simple papilla and amphid situated laterally; pulp of lips with at either side small rounded lobe at its anterior margin. Interlabia triangular, broad, with distinct cuticular margin. Interlabial grooves absent. Cervical alae starting short distance below level of base of subventral lips, gradually becoming wider (maximum width 0.04–0.05) and extending posteriorly to posterior limit of preventriculus. Preventriculus narrow, small ventriculus globular; ventricular appendix narrow, about as long as intestinal caecum; intestinal caecum represents about 30–40% of preventricular length. Nerve ring encircling preventriculus at border of first and second fifths of its length; excretory pore just below nerve ring level. Intestine dark, straight. Rectum short, hyaline, surrounded by three unicellular rectal glands. Tail of both sexes conical, ending in small process covered with fine spines. Males: 18.0–35.0 long, maximum width 0.430–0.800. Dorsal lip 0.151–0.153 long, 0.144 wide; ventro-lateral lips 0.138–0.150 long, 0.131–0.138 wide (Fig. 80 A). Preventriculus 1.94–3.23 long, ventriculus 0.154–0.170 x 0.124–0.144, ventricular appendix 0.54–0.64 long, and intestinal caecum 0.65–0.93 long. Nerve ring and deirids 0.530–0.540 and 0.590–0.600 from anterior end. Tail conical, 0.108–0.139 long, ending in small process covered with fine spines (Fig. 80 D). Twenty three pairs pre-cloacal papillae, two pairs ad-cloacal papillae, and four to five pairs post-cloacal papillae—last pair lateral, remaining pairs subventral. Anterior cloacal lip with one unpaired papilla. Spicules equal, 2.00–4.65 long, with narrow membranous wings; distal tip of spicules rounded (Fig. 80 C). Females: 24.0–48.0 long, maximum width 0.72–1.40. Dorsal lip 0.143–0.155 long, 0.149–0.181 wide; ventrolateral lips 0.153 long, 0.159–0.163 wide. Preventriculus 2.25–4.12 long, ventriculus 0.171–0.180 x 0.155–0.165, ventricular appendix 0.62–0.69 long, and intestinal caecum 0.91–1.08 long. Nerve ring and deirids 0.66–0.90 and 1.08 from anterior end (Fig. 80 B). Tail conical 0.270–0.420 long, ending in small process covered with fine spines. Vulva at end of first third of body length, 9.0–16.5 from anterior end. Vagina narrow, long, directed posteriorly and dividing into two posteriorly directed uterine branches filled with eggs; ovaries situated in posterior part of body. Eggs almost spherical, 0.062–0.070 x 0.046–0.047. L4: 12.0–31.0 long, maximum width 0.22–0.47. Mouth surrounded by three lips comparatively narrow, lacking the large flanges of adults. Preventriculus 1.85–3.85 long, ventricular appendix 0.61–0.98, intestinal caecum 0.65–1.23. Nerve ring and excretory pore 0.34–0.61 and 0.42–0.66 from anterior end. Tail conical, 0.11– 0.29 long, tail tip covered with numerous minute projections. L3: 6.6–21.6 long, maximum width 0.16–0.33. Mouth opening usually T-shaped, two basal projections of ventral boring tooth extending along its margin. No distinct lips present. Two subventral and two subdorsal papillae at anterior end as well as one dorsal antero-median papilla. Cuticle transversely striated. Preventriculus 1.00–2.00 long, ventriculus small. Ventricular appendix 0.40–0.68 long, intestinal caecum 0.33–0.92 long. Nerve ring and excretory pore 0.28–0.45 and 0.31–0.50 from anterior end. Tail conical, 0.12–0.21 long, with pointed tip. Comments: Hysterothylacium aduncum appears to be the most abundant species of the genus known from marine fishes in Canadian waters. According to Klimpel & Ruckert (2005) it is also the most abundant anisakid nematode of North Sea fishes. Hysterothylacium aduncum may be carried into Canadian fresh waters by anadromous or catadromous fishes but is not able to reproduce there. Sites: alimentary tract, body cavity, intestinal lumen, mesenteries, musculature, stomach, stomach wall, viscera Hosts: Alosa pseudoharengus (13); Alosa sapidissima (28, 58); Ammodytes dubius (10); Anarhichas lupus (47); Atheresthes stomias (36, 66); Aulorhynchus flavidus (5); Clupea harengus (38, 40, 44); Clupea pallasi (16, 17, 18, 19); Coryphaenoides rupestris (11, 12, 23, 24, 43); Cryptacanthodes giganteus (3); Eopsetta jordani (2, 3); Gadus macrocephalus (3); Gadus morhua (1, 13, 14, 25, 29, 53, 68, 72, 73); Glyptocephalus cynoglossus (4, 21, 29); Glyptocephalus zachirus (2, 3); Hippoglossoides elassodon (2, 3); Hippoglossoides platessoides (4, 21, 29, 42, 61); Hippoglossus hippoglossus (4, 21); Hippoglossus stenolepis (62, 65); Hypomesus pretiosus (3); Limanda ferrugineus (4, 61); Macrourus berglax (23); Mallotus villosus (46, 60); Melanogrammus aeglefinus (13, 14, 22); Merluccius albidus (50); Merluccius bilinearis (50); Merluccius productus (30); Microgadus tomcod (1); Microstomus pacificus (36); Myoxocephalus scorpius (1); Nezumia bairdii (23); Oncorhynchus gorbuscha (27, 32); Oncorhynchus keta (32, 41); Oncorhynchus kisutch (3, 32); Oncorhynchus mykiss (37); Oncorhynchus nerka (3, 32); Ophiodon elongatus (3); Parophrys vetulus (2, 3, 36); Phycis chesteri (50); Podothecus accipenserinus (5); Pseudopleuronectes americanus (1, 4, 61, 67, 70); Reinhardtius hippoglossoides (21, 51, 55, 56, 57, 59, 64); Rhinochimaera atlantica (35); Salmo salar (1, 6, 7, 9, 20); Salvelinus alpinus (9, 31, 39, 52); Salvelinus fontinalis (45, 48, 49); Salvelinus namaycush (9, 31); Scomber scombrus (1, 13); Sebastes aleutianus (15); Sebastes alutus (3, 15); Sebastes babcocki (15); Sebastes brevispinis (15); Sebastes caurinus (15); Sebastes crameri (15); Sebastes diploproa (15); Sebastes entomelas (15); Sebastes fasciatus (34, 63); Sebastes flavidus (15); Sebastes helvomaculatus (15); Sebastes maliger (15); Sebastes mentella (34, 63, 69); Sebastes nebulosus (15, 54); Sebastes norvegicus (34); Sebastes paucispinis (15); Sebastes pinniger (15); Sebastes polyspinis (15); Sebastes proriger (15); Sebastes reedi (15); Sebastes ruberrimus (3, 15); Sebastes variegatus (15); Sebastes zacentrus (15); Tautogolabrus adspersus (1); Theragra chalcogramma (3, 26, 33, 36); Urophycis chuss (50); Urophycis tenuis (50, 71); Xiphias gladius (28) Distribution: Atlantic, British Columbia, Labrador, New Bruswick, Newfoundland, Nova Scotia, Northwest Territories, Pacific Records: 1. Heller 1949 (AT); 2. Margolis 1952a (PA); 3. Margolis 1952b (PA); 4. Ronald 1963 (AT); 5. Arai 1969 (PA); 6. Pippy 1969 (AT, NS); 7. Pippy 1970 (AT); 8. Sekhar S. [ sic ] & Threlfall 1970 (AT); 9. Hicks & Threlfall 1973 (LB); 10. Scott 1973 (AT); 11. Zubchenko 1975 (AT); 12. Zubchenko 1976 (AT); 13. Gaevskaya & Umnova 1977 (AT); 14. Linkletter et al. 1977 (AT); 15. Sekerak & Arai 1977 (PA); 16. Arthur 1978 (PA); 17. Arthur & Arai 1979 (PA); 18. Arthur & Arai 1980a (PA); 19. Arthur & Arai 1980b (PA); 20. Pippy 1980 (AT); 21. Zubchenko 1980 (AT); 22. Scott 1981 (AT); 23. Zubchenko 1981a (AT); 24. Zubchenko 1981b (AT); 25. Appy & Burt 1982 (AT); 26. Arthur et al. 1982 (PA); 27. Margolis 1982 (NF); 28. Hogans et al. 1983 (AT); 29. McClelland et al. 1983a (AT); 30. Sankurathri et al. (PA); 31. Stewart & Bernier 1983 (NT); 32. Anon. 1984 (BC); 33. Arthur 1984 (PA); 34. Bourgeois & Ni 1984 (AT); 35. Hogans & Hurlbut (AT); 36. Kabata & Whitaker 1984 (PA); 37. Margolis 1984 (PA); 38. McGladdery 1984 (AT); 39. Stewart & Bernier 1984 (NT); 40. McGladdery & Burt 1985 (AT); 41. Whitaker 1985 (PA); 42. Zubchenko 1985a (AT); 43. Zubchenko 1985b (AT); 44. Chenoweth et al. 1986 (AT); 45. Frimeth 1986 (NB); 46. Pálsson 1986 (AT); 47. Bray 1987 (AT); 48. Frimeth 1987a (NB); 49. Frimeth 1987b (NB); 50. Scott 1987 (AT); 51. Wierzbicka 1988 (AT); 52. Bouillon & Dempson 1989 (LB); 53. Brattey et al. 1990 (AT); 54. Holmes 1990 (PA); 55. Wierzbicka 1991a (AT); 56. Wierzbicka 1991b (AT); 57. Krzykawski & Wierzbicka 1992 (AT); 58. Hogans et al. 1993 (AT); 59. Arthur & Albert 1994 (AT); 60. Arthur et al. 1995 (AT); 61. Martell & McClelland 1995 (AT); 62. Blaycock 1996 (PA); 63. Moran et al. 1996 (AT); 64. Boje et al. 1997 (AT); 65. Blaycock et al. 1998a (PA); 66. Wierzbicka & Piasecki 1998 (PA); 67. Khan 1999 (AT); 68. Lee & Khan 2000 (AT); 69. Marcogliese et al. 2003 (AT); 70. McClelland et al . 2005 (AT); 71. Melendy et al. 2005 (AT); 71. Khan et al. 2011 (NF); 73. McClelland & Melendy 2011 (AT) : Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on pages 139-141, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530 : {"references": ["Deardorff, T. L. & Overstreet, R. M. (1981) Review of Hysterothylacium and Iheringascaris (both previously = Thynnascaris) (Nematoda: Anisakidae) from the northern Gulf of Mexico. Proceedings of the Biological Society of Washington, 93, 1035 - 1079.", "Klimpel, S. & Ruckert, S. (2005) Life cycle strategy of Hysterothylacium aduncum to become the most abundant anisakid fish nematode in the North Sea. Parasitology Research, 97, 141 - 149. http: // dx. doi. org / 10.1007 / s 00436 - 005 - 1407 - 6", "Heller, A. F. (1949) Parasites of cod and other marine fish from the Baie de Chaleur region. Canadian Journal of Research, 27 D, 243 - 264. http: // dx. doi. org / 10.1139 / cjr 49 d- 022", "Margolis, L. (1952 a) Unpublished data. Institute of Parasitology, McGill University, Montreal, Quebec.", "Margolis, L. (1952 b) Studies on the parasites and diseases of marine and anadromous fish from the Canadian Pacific coast. Ph. D. Dissertation, Institute of Parasitology, McGill University, Montreal, Quebec.", "Ronald, K. (1963) The metazoan parasites of the Heterosomata of the Gulf of St. Lawrence. VII. Nematoda and Acanthocephala. Canadian Journal of Zoology, 41, 15 - 21. http: // dx. doi. org / 10.1139 / z 63 - 002", "Arai, H. P. (1969) Preliminary report on the parasites of certain marine fishes of British Columbia. Journal of the Fisheries Research Board of Canada, 26, 2319 - 2337. http: // dx. doi. org / 10.1139 / f 69 - 226", "Pippy, J. H. C. (1969) Preliminary report on parasites as biological tags in Atlantic salmon (Salmo salar). I. Investigations 1966 to 1968. Fisheries Research Board of Canada Technical Report, No. 134, 60 pp.", "Pippy, J. H. C. (1970) Use of ultraviolet light to find parasitic nematodes in situ. Journal of the Fisheries Research Board of Canada, 27, 963 - 965. http: // dx. doi. org / 10.1139 / f 70 - 107", "Hicks, F. J. & Threlfall, W. (1973) Metazoan parasites of salmonids and coregonids from coastal Labrador. Journal of Fish Biology, 5, 399 - 415. http: // dx. doi. org / 10.1111 / j. 1095 - 8649.1973. tb 04468. x", "Scott, J. S. (1973) Intestinal helminth parasites of northern sand lance (Ammodytes dubius). Journal of the Fisheries Research Board of Canada, 30, 291 - 292. http: // dx. doi. org / 10.1139 / f 73 - 050", "Zubchenko, A. V. (1975) [On the parasite fauna of macrourids in the North Atlantic.] Trudy Polyarni Nauchno-Issledovatel'skii i Proektnyi Institut Morskogo Rybnogo Khozyaistva i Okeanografii, 35, 234 - 238. [In Russian]", "Zubchenko, A. V. (1976) [On the question of the existence of separate populations of the blunt-nosed macrurid (Macrourus rupestris Gunner) from the northwest Atlantic in the light of its parasitological data.] In: Gaevskaya, A. V. (Ed.). Summaries of Reports from the Second All-Union Symposium on Parasites and Diseases of Marine Animals. AtlantNIRO, Kaliningrad, pp. 29 - 30. [In Russian]", "Gaevskaya, A. V. & Umnova, B. A. (1977) [On the parasite fauna of the principal commercial fishes of the northwest Atlantic.] Biologiya Morya (Vladivostok), 4, 40 - 48. [In Russian]", "Linkletter, L. E., Lord, E. L. & Dadswell, M. J. (1977) A checklist and catalogue of the marine fauna and flora of the lower Bay of Fundy shore of New Brunswick. Huntsman Marine Laboratory, St. Andrews, New Brunswick, vii + 68 pp.", "Sekerak, A. D. & Arai, H. P. (1977) Some metazoan parasites of rockfishes of the genus Sebastes from the northeastern Pacific Ocean. Syesis, 10, 139 - 144.", "Arthur, J. R. (1978) Studies on the parasites of Pacific herring (Clupea harengus pallasi) in North American waters. Ph. D. Dissertation, Department of Biology, University of Calgary, Alberta, 206 pp.", "Arthur, J. R. & Arai, H. P. (1979) A preliminary analysis of the value of parasites as biological indicators for stocks of Pacific herring. Program and Abstracts. 18 th Annual Meeting, Canadian Society of Zoologists, Quebec City, Quebec, 13 - 16 May 1979, p. 97.", "Arthur, J. R. & Arai, H. P. (1980 a) Studies on the parasites of Pacific herring (Clupea harengus pallasi Valenciennes): survey results. Canadian Journal of Zoology, 58, 64 - 70. http: // dx. doi. org / 10.1139 / z 80 - 008", "Arthur, J. R. & Arai, H. P. (1980 b) Studies on the parasites of Pacific herring (Clupea harengus pallasi Valenciennes): a preliminary evaluation of parasites as indicators of geographical origin for spawning herring. Canadian Journal of Zoology, 58, 521 - 527. http: // dx. doi. org / 10.1139 / z 80 - 072", "Pippy, J. H. C. (1980) The value of parasites as biological tags in Atlantic salmon at West Greenland. Rapports et Proces- Verbaux des Reunions. Conseil International pour l'Exploration de la Mer, 176, 76 - 81.", "Zubchenko, A. V. (1980) Parasitic fauna of Anarhichadidae and Pleuronectidae families of fish in the northwest Atlantic. International Commission for Northwest Atlantic Fisheries, Selected Papers, No. 6, 41 - 46.", "Scott, J. S. (1981) Alimentary tract parasites of haddock (Melanogrammus aeglefinus L.) on the Scotian Shelf. Canadian Journal of Zoology, 59, 2244 - 2252. http: // dx. doi. org / 10.1139 / z 81 - 304", "Zubchenko, A. V. (1981 a) Parasitic fauna of some Macrouridae in the northwest Atlantic. Journal of Northwest Atlantic Fisheries Science, 2, 67 - 72. http: // dx. doi. org / 10.2960 / j. v 2. a 8", "Zubchenko, A. V. (1981 b) [Using parasitological data in studying rock grenadier (Coryphaenoides rupestris Gunner) local groupings.] In: Bauer, O. N. (Eds.), Symposium on Parasitology and Pathology of Marine Organisms, Leningrad. (Abstract), pp. 25 - 32. [In Russian: for English version see NOAA Technical Report, 25, 19 - 23]", "Appy, R. G. & Burt, M. D. B. (1982) Metazoan parasites of cod, Gadus morhua L., in Canadian Atlantic waters. Canadian Journal of Zoology, 60, 1573 - 1579. http: // dx. doi. org / 10.1139 / z 82 - 207", "Arthur, J. R., Margolis, L., Whitaker, D. J. & McDonald, T. E. (1982) A quantitative study of economically important parasites of walleye pollock (Theragra chalcogramma) from British Columbian waters and effects of postmortem handling on their abundance in the musculature. Canadian Journal of Fisheries and Aquatic Sciences, 39, 710 - 726. http: // dx. doi. org / 10.1139 / f 82 - 100", "Hogans, W. E., Brattey, J., Uhazy, L. S. & Hurley, P. C. (1983) Helminth parasites of swordfish (Xiphias gladius L.) from the northwest Atlantic Ocean. Journal of Parasitology, 69, 1178 - 1179. http: // dx. doi. org / 10.2307 / 3280895", "McClelland, G., Misra, R. K. & Marcogliese, D. J. (1983 a) Variations in abundance of larval anisakines, sealworm (Phocanema decipiens) and related species in cod and flatfish from the southern Gulf of St. Lawrence (4 T) and the Breton Shelf (4 Vn). Canadian Technical Report of Fisheries and Aquatic Sciences, No. 1201, 51 pp.", "Stewart, D. B. & Bernier, L. M. J. (1983) An aquatic resource survey of Victoria and King William islands and the northeastern District of Keewatin, Northwest Territories. Environment Canada and Department of Indian and Northern Affairs, Northern Environmental Protection Branch, Land Directorate. Northern Land Use Series, Background Report, No. 3, 127 pp.", "Anthony, D. D. (1984) Helminth parasites of white bass (Morone chrysops) from Lake Nipissing, Ontario. Program and Abstracts. 59 th Annual Meeting, American Society of Parasitologists, 05 - 09 August 1984. Snowbird, Utah, p. 27.", "Bourgeois, C. E. & Ni, I. - H. (1984) Metazoan parasites of northwest Atlantic redfishes (Sebastes spp.). Canadian Journal of Zoology, 62, 1879 - 1885. http: // dx. doi. org / 10.1139 / z 84 - 274", "Kabata, Z. & Whitaker, D. J. (1984) Results of three investigations of the parasite fauna of several marine fishes of British Columbia. Canadian Technical Report of Fisheries and Aquatic Sciences, No. 1303, 19 pp.", "McGladdery, S. E. (1984) Studies of the parasite fauna of Atlantic herring (Clupea harengus L.) from the northwestern Atlantic Ocean. Ph. D. Thesis. Department of Biology, University of New Brunswick, Fredericton, New Brunswick, 286 pp.", "Stewart, D. B. & Bernier, L. M. J. (1984) An aquatic resource survey of Melville Peninsula, Southampton Island, and the northeastern District of Keewatin, Northwest Territories. Environment Canada and Department of Indian and Northern Affairs, Northern Environmental Protection Branch, Land Directorate. Northern Land Use Series, Background Report, No. 4, 144 pp.", "McGladdery, S. E. & Burt, M. D. B. (1985) Potential of parasites for use as biological indicators of migration, feeding, and spawning behavior of northwest Atlantic herring (Clupea harengus). Canadian Journal of Fisheries and Aquatic Sciences, 42, 1957 - 1968. http: // dx. doi. org / 10.1139 / f 85 - 243", "Whitaker, D. J. (1985) A parasite survey of juvenile chum salmon (Oncorhynchus keta) from the Nanaimo River. Canadian Journal of Zoology, 63, 2875 - 2877. http: // dx. doi. org / 10.1139 / z 85 - 428", "Zubchenko, A. V. (1985 a) Parasite fauna of American plaice (Hippoglossoides platessoides) from the northwest Atlantic. Journal of Northwest Atlantic Fisheries Science, 6, 165 - 171. http: // dx. doi. org / 10.2960 / j. v 6. a 17", "Zubchenko, A. V. (1985 b) Use of parasitological data in studies of the local groupings of rock grenadier, Coryphaenoides rupestris Gunner. In: Hargis Jr, W. J. (Ed.). Parasitology and Pathology of Marine Animals of the World Oceans (pp. 19 - 23). United States Department of Commerce, NOAA Technical Report National Marine Fisheries Service, No. 25, iv + 135 pp.", "Chenoweth, J. F., McGladdery, S. E., Sindermann, C. J., Sawyer, T. K. & Bier, J. W. (1986) An investigation into the usefulness of parasites as tags for herring (Clupea harengus) stocks in the western North Atlantic, with emphasis on use of the larval nematode Anisakis simplex. Journal of Northwest Atlantic Fishery Science, 7, 25 - 33. http: // dx. doi. org / 10.2960 / j. v 7. a 3", "Frimeth, J. P. (1986) Parasites as indicators of brook charr biology in the Tabusintac River, New Brunswick. Ph. D. Dissertation, University of New Brunswick, Fredericton, N. B., Canada. http: // dx. doi. org / 10.1139 / z 87 - 303", "Palsson, J. (1986) Quantitative studies on the helminth fauna of capelin (Mallotus villosus (Muller )) in the northwest Atlantic for purposes of stock determination. Canadian Technical Report of Fisheries and Aquatic Sciences, No. 1499, v + 21 pp.", "Bray, R. A. (1987) A study of the helminth parasites of Anarhichas lupus (Perciformes: Anarhichadidae) in the North Atlantic. Journal of Fish Biology, 31, 237 - 264. http: // dx. doi. org / 10.1111 / j. 1095 - 8649.1987. tb 05229. x", "Frimeth, J. P. (1987 a) A survey of the parasites of nonanadromous brook charr (Salvelinus fontinalis) in the Tabusintac River, New Brunswick, Canada. Canadian Journal of Zoology, 65, 1354 - 1362. http: // dx. doi. org / 10.1139 / z 87 - 215", "Frimeth, J. P. (1987 b) Potential use of certain parasites of brook charr (Salvelinus fontinalis) as biological indicators in the Tabusintac River, New Brunswick, Canada. Canadian Journal of Zoology, 65, 1989 - 1995. http: // dx. doi. org / 10.1139 / z 87 - 303", "Scott, J. S. (1987) Helminth parasites of the alimentary tracts of hakes (Merluccius, Urophycis, Phycis: Teleostei) of the Scotian Shelf. Canadian Journal of Zoology, 6, 304 - 311. http: // dx. doi. org / 10.1139 / z 87 - 047", "Wierzbicka, J. (1988) Parasite fauna of the blue halibut (Reinhardtius hippoglossoides Walbaum, 1792) from selected districts of its distribution area. Akademia Rolnicza, Szczecin, Poland. 87 pp. (Translated from Polish by Canadian Translation of Fisheries and Aquatic Sciences, No. 5520, 115 pp.)", "Bouillon, D. R. & Dempson, J. B. (1989) Metazoan parasite infections in landlocked and anadromous Arctic charr (Salvelinus alpinus Linnaeus), and their use as indicators of movement to sea in young anadromous charr. Canadian Journal of Zoology, 67, 2478 - 2485. http: // dx. doi. org / 10.1139 / z 89 - 350", "Holmes, J. C. (1990) Helminth communities in marine fishes. In: Esch, G., Bush, A. O. & Aho, J. (Eds.), Parasite Communities: Patterns and Processes. Chapman & Hall, New York, pp. 101 - 130. http: // dx. doi. org / 10.1007 / 978 - 94 - 009 - 0837 - 6 _ 5", "Wierzbicka, J. (1991 a) Parasite fauna of the Greenland halibut Reinhardtius hippoglossoides (Walbaum) from Labrador area. Acta Ichthyologica et Piscatoria, 21, 21 - 29.", "Wierzbicka, J. (1991 b) An analysis of the parasitic fauna of Greenland halibut, Reinhardtius hippoglossoides (Walbaum, 1792), in different age groups. Acta Ichthyologica et Piscatoria, 21, 31 - 41. http: // dx. doi. org / 10.3750 / AIP 1991.21.1.02", "Krzykawski, S. & Wierbicka, J. (1992) An attempt to determine systematic position of Greenland halibut, Reinhardtius hippoglossoides (Walbaum, 1792), from Labrador region and Barents Sea on the basis of morphometric, biologic, and parasitological studies. Acta Ichthyologica et Piscatoria, 22, 59 - 75. http: // dx. doi. org / 10.3750 / AIP 1992.22.2.04", "Hogans, W. E., Dadswell, M. J., Uhazy, L. S. & Appy, R. G. (1993) Parasites of American shad, Alosa sapidissima (Osteichthyes: Clupeidae) from rivers of the North American Atlantic coast and the Bay of Fundy, Canada. Canadian Journal of Zoology, 71, 941 - 946. http: // dx. doi. org / 10.1139 / z 93 - 123", "Arthur, J. R. & Albert, E. (1994) A survey of the parasites of Greenland halibut (Reinhardtius hippoglossoides) caught off Atlantic Canada, with notes on their zoogeography in this fish. Canadian Journal of Zoology, 72, 756 - 778. http: // dx. doi. org / 10.1139 / z 94 - 103", "Arthur, J. R., Albert, E. & Boily, F. (1995) Parasites of capelin (Mallotus villosus) in the St. Lawrence estuary and gulf. Canadian Journal of Fisheries and Aquatic Sciences, 52 (Suppl. 1), 246 - 253. http: // dx. doi. org / 10.1139 / f 95 - 532", "Martell, D. J. & McClelland, G. (1995) Transmission of Pseudoterranova decipiens (Nematoda: Ascaridoidea) via benthic macrofauna to sympatric flatfishes (Hippoglossoides platessoides, Pleuronectes ferrugineus, P. americanus) on Sable Island Bank, Canada. Marine Biology, 122, 129 - 135. http: // dx. doi. org / 10.1007 / bf 00349286", "Blaycock, R. B. (1996) The parasites of Pacific halibut, Hippoglossus stenolepis, in the northeastern Pacific: ecological patterns in time and space. Ph. D. Dissertation. Department of Biological Sciences, University of Alberta, Edmonton, Alberta, 156 pp.", "Moran, J. D. W., Arthur, J. R. & Burt, M. D. B. (1996) Parasites of sharp-beaked redfishes (Sebastes fasciatus and Sebastes mentella) collected from the Gulf of St. Lawrence, Canada. Canadian Journal of Fisheries and Aquatic Sciences, 53, 1821 - 1826. http: // dx. doi. org / 10.1139 / cjfas- 53 - 8 - 1821", "Boje, J., Riget, F. & Koie, M. (1997) Helminth parasites as biological tags in population studies of Greenland halibut (Reinhardtius hippoglossoides (Walbaum )), in the north - west Atlantic. ICES Journal of Marine Science, 54, 886 - 895. http: // dx. doi. org / 10.1006 / jmsc. 1997.0214", "Blaycock, R. B., Holmes, J. C. & Margolis, L. (1998 a) The parasites of Pacific halibut (Hippoglossus stenolepis) in the eastern North Pacific: host-level influences. Canadian Journal of Zoology, 76, 536 - 547. http: // dx. doi. org / 10.1139 / z 97 - 214", "Wierzbicka, J. & Piasecki, W. (1998) Parasite fauna of Atheresthes stomias (Jordan et Gilbert, 1880) (Pleuronectiformes) from the northeastern Pacific Ocean. Acta Ichthyologica et Piscatoria, 28, 49 - 57. http: // dx. doi. org / 10.3750 / AIP 1998.28.1.06", "Khan, R. A. (1999) Length-mass relationship, histopathology, and parasitism in winter flounder (Pleuronectes americanus) living near a PCB-contaminated naval facility in Newfoundland. Canadian Journal of Zoology, 77, 381 - 388. http: // dx. doi. org / 10.1139 / z 98 - 239", "Lee, E. M. & Khan, R. A. (2000) Length-weight-age relationships, food, and parasites of Atlantic cod (Gadus morhua) off coastal Labrador within NAFO divisions 2 H and 2 J- 3 K. Fisheries Research, 45, 65 - 72. http: // dx. doi. org / 10.1016 / s 0165 - 7836 (99) 00101 - 0", "Marcogliese, D. J., Albert, E., Gagnon, P. & Sevigny, J. - M. (2003) Use of parasites in stock identification of the deepwater redfish (Sebastes mentella) in the Northwest Atlantic. Fisheries Bulletin, 101, 183 - 188.", "Khan, R. A., Chandra, C. V. & Earle, P. (2011) Comparison of metazoan parasites of Atlantic cod, Gadus morhua, from three geographical areas of coastal Newfoundland. Journal of Parasitology, 97, 270 - 274. http: // dx. doi. org / 10.1645 / ge- 2510.1", "McClelland, G. & Melendy, J. (2011) Use of parasites as tags in delineating stocks of Atlantic cod (Gadus morhua) from the southern Gulf of St. Lawrence and the Cape Breton Shelf. Fisheries Research, 107, 233 - 238. http: // dx. doi. org / 10.1016 / j. fishres. 2010.10.022"]}