Ascarophis arctica Polyanski, 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: 84-86

publication ID

http://doi.org/10.11646/zootaxa.4185.1.1

publication LSID

lsid:zoobank.org:pub:0D054EDD-9CDC-4D16-A8B2-F1EBBDAD6E09

persistent identifier

http://treatment.plazi.org/id/038FB248-FFE2-FFE3-89B9-C0DE22309CF5

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Plazi

scientific name

Ascarophis arctica Polyanski, 1952
status

 

Ascarophis arctica Polyanski, 1952  

Description (after Appy 1981). With characteristics of the genus.

Males: 6.6 (5.7–7.9) long, 0.089 (0.062–0.105) wide at vas deferens. Muscular oesophagus 0.274 (0.233– 0.325) and glandular oesophagus 1.650 (1.325–2.045) long. Deirids, nerve ring and excretory pore 0.132 (0.110– 0.151), 0.179 (0.155–0.202) and 0.267 (0.232–0.338), respectively, from anterior end ( Fig. 52 View FIGURE 52 A). Tail 0.151 (0.129–0.182) long. Right spicule 0.100 (0.085–0.111) long, spicule arcuate, notched distally. Left spicule 0.808 (0.585–0.882) long, tubular, divided into proximal shaft and blade. Ratio of left to right 1:8.1 (1:5.9 to 1:10.4).

Area rugosa with about 14 longitudinal rows of cuticular elevations. Ten pairs caudal papillae: two double pairs pre-cloacal, six pairs post-cloacal; 5th post-cloacal pair relatively small, ventral to 6th pair. Caudal alae narrow. Phasmids immediately behind last pair post-cloacal papillae ( Fig. 52 View FIGURE 52 B).

Females: 13.3 (10.5–15.4) long, 0.124 (0.092–0.157) wide at vulva. Muscular oesophagus 0.321 (0.235–0.414)

and glandular oesophagus 1.928 (1.474–2.554) long. Deirids, nerve ring, excretory pore and vulva 0.147 (0.131–

0.166), 0.194 (0.172–0.221), 0.295 (0.269–0.338) and 7.0 (5.5–8.3), respectively, from anterior end ( Fig. 52 View FIGURE 52 C).

[NB: to avoid clutter in Figure 52 View FIGURE 52 C the in utero   eggs have been drawn as if they lack polar filaments.] Tail 0.052

(0.034–0.071) long. Eggs 0.045 (0.043–0.048) x 0.024 (0.022–0.027) with filaments at both poles ( Fig. 52 View FIGURE 52 D). [For comments on A. arctica   see page 90–91]

Sites: alimentary tract, stomach

Hosts: Gadus morhua   (1, 3); Hemitripterus americanus   (1); Hippoglossoides platessoides   (5); Melanogrammus aeglefinus   (1, 2, 4); Merluccius bilinearis   (1); Microgadus tomcod   (1); Osmerus mordax   (1); Pholis gunnellus   (1); Pseudopleuronectes americanus   (1, 7); Reinhardtius hippoglossoides   (6); Urophycis tenuis   (1); Zoarces americanus   (1)

Distribution: Atlantic

Records: 1. Appy 1981; 2. Scott 1981; 3. Appy & Burt 1982; 4. Scott 1982; 5. Zubchenko 1985a; 6. Arthur & Albert 1994; 7. McClelland et al. 2005