Ascarophis sebastodis Olsen, 1952

Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, Zootaxa 4185 (1), pp. 1-274 : 90

publication ID	https://doi.org/10.11646/zootaxa.4185.1.1
publication LSID	lsid:zoobank.org:pub:0D054EDD-9CDC-4D16-A8B2-F1EBBDAD6E09
DOI	https://doi.org/10.5281/zenodo.5626776
persistent identifier	https://treatment.plazi.org/id/038FB248-FFE8-FFEF-89B9-C4DA25709BB9
treatment provided by	Plazi (2016-11-08 07:41:12, last updated by Guilherme 2025-02-13 19:53:50)
scientific name	Ascarophis sebastodis Olsen, 1952
status

Treatment

Description (after Ko 1986). With characteristics of the genus.

Males: 5.1 (3.7–6.4) long, 0.026 (0.020–0.030) wide at nerve ring. Buccal cavity 0.080 (0.070–0.100),

muscular oesophagus 0.282 (0.220–0.377) and glandular oesophagus 2.5 (1.7–2.5) long. Nerve ring 0.117 (0.090–

0.144) from anterior end ( Fig. 56 View FIGURE 56 A). Four pairs pre-cloacal and six pairs post-cloacal papillae. Left spicule 0.135

and right spicule 0.047 (0.036–0.053) long. Tail 0.065 (0.053–0.074) long.

Females: 8.7 (7.1–9.4) long, 0.028 (0.022–0.030) at nerve ring. Buccal cavity 0.086 (0.080–0.090), muscular

oesophagus 0.374 (0.310–0.410) and glandular oesophagus 2.5 (1.8–2.9) long. Nerve ring 0.136 (0.115–0.144)

from anterior end. Vulva 2.2 from posterior end. Tail 0.055 (0.041–0.070) long, ending in small knob ( Fig. 56 View FIGURE 56 B).

Eggs 0.037 (0.036–0.038) x 0.023 (0.019–0.024) with polar plug bearing two filaments ( Fig. 56 View FIGURE 56 C). [For comments on A. sebastodis see below]

Site: intestinal lumen

Hosts: Anoplarchus purpurescens (1); Artedius harringtoni (1); Aulorhynchus flavidus (1); Hemilepidotus hemilepidotus (1); Hexagrammos lagocephalus (1); Microstomus pacificus (3); Myoxocephalus polyacanthocephalus (1); Nautichthys oculofasciatus (1); Oncorhynchus kisutch (1, 4); Oncorhynchus nerka (1); Parophrys vetulus (3); Rhamphocottus richardsonii (1); Sebastes alutus (2); Sebastes borealis (2); Sebastes caurinus (1, 2, 4); Sebastes diploproa (2); Sebastes variegatus (1, 2); Sebastes flavidus (2); Sebastes maliger (2); Sebastes nebulosus (5); Sebastes proriger (2); Sebastes ruberrimus (2); Sebastes variegatus (2); Sebastes zacentrus (2)

Distribution: Pacific

Records: 1. Arai 1969; 2. Sekerak & Arai 1977; 3. Kabata & Whitaker 1984; 4. Ko 1986; 5. Holmes 1990

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

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

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.

Ko, R. C. (1986) A preliminary review of the genus Ascarophis van Beneden, 1871 (Nematoda: Cystidicolidae) of the gastrointestinal tract of fishes. Department of Zoology, University of Hong Kong, Occasional Publications, 54 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.