Truttaedacnitis clitellarius (Ward & Magath, 1917) Petter 1974

• Main Authors: Arai, Hisao P., Smith, John W.
• Format: Text
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Nematoda; Secernentea; Ascaridida; Cucullanidae; Truttaedacnitis; Truttaedacnitis clitellarius; Hudson Bay; Canada; Hudson; Midland; Holloway; Nelson River
• Online Access: https://dx.doi.org/10.5281/zenodo.5626959; https://zenodo.org/record/5626959

Truttaedacnitis clitellarius (Ward & Magath, 1917) Petter, 1974 Synonym: Cucullanus clitellarius Ward & Magath, 1917 Description (after Choudhury & Dick 1996a). With characteristics of the genus. Body moderately robust, cephalic end rounded, cuticle with transverse striations. Posterior part of body often curved ventrally. Narrow lateral alae beginning in cervical region, terminating at anal region. Mouth opening spindle-shaped, with three conspicuous papillae on either side—the central one likely an amphid. Mouth opening bordered by transparent cuticular collarette bearing weak longitudinal rib-like structures (“teeth”). Inner circle of three small papillae present. Two bud-shaped deirids, one on either side, often asymmetrical, adjacent to lateral alae, and posterior to nerve ring. Tail conical, gently tapering, bearing mucron. Hemizonid posterior to nerve ring. Oesophagus muscular, clavate, expanded anteriorly to form pseudobuccal capsule. Bilaterally symmetrical cephalic plates present, separated by narrow sutures and attached to thickened cuticular plates of pseudobuccal capsule (Fig. 86 C). Oesophageal lumen lined by cuticle, each side of triradiate lumen thickened to give appearance of “longitudinal rods” embedded into oesophageal musculature. Oesophago-intestinal junction guarded by cuticular folded valve. Excretory pore at about mid-level of pseudobuccal capsule (Fig. 87 A). Excretory duct long, cuticular, extending posteriorly along ventral body wall past nerve ring to first half of oesophagus, with prominent nucleus present immediately posterior to base of excretory duct (Fig. 87 A). Males: 13.5 (9.6–16.9) long; maximum width 0.40 (0.24–0.59). Nerve ring 0.585 (0.526–0.640) from anterior end. Oesophagus 1.35 (1.10–1.55) long. Tail 0.428 (0.301–0.564) long. Single testis originating posteriorly, extending anteriorly and looping back on itself. Posterior pre-cloacal sucker bordered by radially situated muscle bands, 1.70 (1.25–2.10) from posterior end (Fig. 87 B). Spicules equal or slightly sub-equal, gouge shaped with median serrated margins; left spicule 1.12 (0.90–1.30) long, right one 1.14 (0.87–1.35) long. Gubernaculum with Y-shaped sclerotized body, 0.139 (0.101–0.172) long. Eleven pairs of sessile caudal papillae: four pairs pre-cloacal, one pair ad-cloacal, and six pairs post-cloacal, of which one pair are phasmids. Median papilla immediately anterior to anterior margin of cloacal opening (Fig. 87 B). Females: 15.1 (9.9–18.6) long; maximum width 0.43 (0.33–0.53). Nerve ring 0.613 (0.564–0.677) from anterior end. Oesophagus 1.42 (1.15–1.60) long. Tail 0.380 (0.245–0.498) long. Ovaries coiled. Anterior ovary at level of, or posterior to, oesophago-intestinal junction, in anterior third of body. Posterior ovary in posterior fifth of body (Fig. 87 C). Oviducts extending beyond vulvar region, reflexing and giving rise to thin-walled uteri containing eggs. Vulval opening a transverse slit. Eggs ovoid, thin-shelled, 0.067 x 0.041–0.079 x 0.049. Site: intestinal lumen Host: Acipenser fulvescens Distribution: Canada, Central Canada, Hudson Bay Drainage, Manitoba, Ontario, Saskatchewan Records: Bangham & Hunter 1939 (ON); Bangham 1951 (ON); Bangham 1955 (ON); Anthony 1974 (ON); Dechtiar & Christie 1988 (ON); Choudhury et al. 1990 (MB, SK); Swanson et al. 1991 (MB); Choudhury & Dick 1993 (CC); Choudhury & Dick 1996a (MB, SK); Choudhury & Dick 1996b (CA); Choudhury & Dick 1998 (HBD) : 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 152-153, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530 : {"references": ["Choudhury, A. & Dick, T. A. (1996 a) Observations on the morphology of Truttaedacnitis clitellarius and T. lebedevi (Nematoda: Cucullanidae) from acipenserids and synonymy of the two species. Systematic Parasitology, 33, 89 - 99. http: // dx. doi. org / 10.1007 / bf 00009425", "Bangham, R. V. & Hunter, G. W. III. (1939) Studies on fish parasites of Lake Erie. Distribution studies. Zoologica (New York), 24, 385 - 444.", "Bangham, R. V. (1951) Parasite records by location in 1951: Manitoulin Island and surrounding waters. University of Toronto, Ontario Fisheries Research Laboratory Report, 27 pp.", "Bangham, R. V. (1955) Studies on fish parasites of Lake Huron and Manitoulin Island. American Midland Naturalist, 53, 184 - 194. http: // dx. doi. org / 10.2307 / 2422308", "Anthony, D. D. (1974) Helminth parasites of sturgeon (Acipenser fulvescens) from Lake Nipissing, Ontario, Canada. Proceedings. 3 rd International Congress of Parasitology, 25 - 31 August 1974, Munich, Federal Republic of Germany, pp. 1642 - 1643.", "Dechtiar, A. O. & Christie, W. J. (1988) Survey of the parasite fauna of Lake Ontario fishes, 1961 to 1971. In: Nepszy, S. J. (Ed.), Parasites of Fishes in the Canadian waters of the Great Lakes. Great Lakes Fishery Commission, Technical Report, No. 51, 66 - 95.", "Choudhury, A., Dick, T. A., Holloway, H. & Ottinger, C. (1990) The lake sturgeon \u0336 Acipenser fulvescens (Chondrostei, Acipenseridae) in Canada: preliminary studies on parasitofauna and immunological parameters. In: Interbasin Biota Transfer, North Dakota Water Quality Symposium, 20 - 21 March 1990. North Dakota State University, Fargo, North Dakota.", "Swanson, G. M., Kansas, K. R., Matkowski, S. M. & Graveline, P. (1991) A report on the fisheries resources of the lower Nelson River and the impact of hydroelectric development, 1989 data. Manitoba Department of Natural Resources. Fisheries Branch, Manuscript Report 91 - 03, 248 pp.", "Choudhury, A. & Dick, T. A. (1993) Parasites of the lake sturgeon, Acipenser fulvescens (Chondrostei: Acipenseridae), from central Canada. Journal of Fish Biology, 42, 571 - 584. http: // dx. doi. org / 10.1006 / jfbi. 1993.1060", "Choudhury, A. & Dick, T. A. (1996 b) Observations on the morphology, systematics, and biogeography of the genus Truttaedacnitis (Nematoda: Cucullanidae). Journal of Parasitology, 82, 977 - 987. http: // dx. doi. org / 10.2307 / 3284209", "Choudhury, A. & Dick, T. A. (1998) Patterns and determinants of helminth communities in the Acipenseridae (Actinopterygii: Chondrostei), with special reference to the lake sturgeon, Acipenser fulvescens. Canadian Journal of Zoology, 76, 330 - 349. http: // dx. doi. org / 10.1139 / z 97 - 189"]}