Ascarophis extalicola Appy, 1981

Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, Zootaxa 4185 (1), pp. 1-274: 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-FFE4-FFE3-89B9-C4CB23769BB2

treatment provided by

Plazi

scientific name

Ascarophis extalicola Appy, 1981
status

 

Ascarophis extalicola Appy, 1981  

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

Males: 5.3 (4.0–6.3) long, 0.039 (0.033–0.051) wide at vas deferens. Muscular oesophagus 0.184 (0.159– 0.224) and glandular oesophagus 1.018 (0.732–1.269) long. Deirids, nerve ring and excretory pore 0.113 (0.097– 0.127), 0.134 (0.116–0.148) and 0.212 (0.183–0.244), respectively, from anterior end ( Fig. 53 View FIGURE 53 A). Tail 0.098 (0.078–0.117) long. Right spicule 0.070 (0.061–0.083) long, spicule arcuate, notched distally. Left spicule 0.313 (0.276–0.359) long, divided into proximal shaft and blade. Ratio of left to right 1:4.5 (1:3.6 to 1:5.6). Area rugosa with about nine longitudinal rows of cuticular elevations. 10 pairs caudal papillae: four pairs pre-cloacal, six pairs post-cloacal; 5th post-cloacal pair relatively small, ventral to 6th pair. Caudal alae narrow. Phasmids behind last pair of post-cloacal papillae ( Fig. 53 View FIGURE 53 B).

Females: 7.2 (5.9–8.7) long, 0.050 (0.037–0.072) wide at vulva. Muscular oesophagus 0.187(0.163–0.202) and glandular oesophagus 1.196 (1.015–1.363) long. Deirids, nerve ring, excretory pore and vulva 0.115 (0.101– 0.128), 0.133 (0.116–0.148), 0.215(0.180–0.237) and 5.2 (4.2–6.2), respectively, from anterior end. Tail 0.052 (0.037–0.066) long ( Fig. 53 View FIGURE 53 C). Eggs 0.044 (0.041–0.046) x 0.027 (0.026–0.031) with two to 11 filaments at one pole ( Fig. 53 View FIGURE 53 D).

[For comments on A. extalicola   see pages 90–91.]

Sites: intestine, rectum

Hosts: Gadus morhua   (1, 3); Melanogrammus aeglefinus   (2); Myoxocephalus octodecemspinosus   (1) Distribution: Atlantic

Records: 1. Appy 1981; 2. Scott 1981; 3. Appy & Burt 1982