Piscicapillaria (Piscicapillaria) freemani

Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, Zootaxa 4185 (1), pp. 1-274 : 28

Piscicapillaria (Piscicapillaria) freemani ( Moravec, Margolis & McDonald, 1981) Moravec, 1982

Synonym: Capillaria freemani Moravec, Margolis & McDonald, 1981

Description (after Moravec 2001). With characteristics of the genus.

Males: Body length 13.35–25.76 long, maximum width 0.047–0.074. Muscular oesophagus 0.338–0.414 long, stichosome 6.09–11.35, 46–50 stichocytes. Nerve ring 0.081–0.092 from anterior end. Spicule 0.653–0.984 long, irregular transverse grooves on the third quarter of its length ( Fig. 21 A). Tail rounded. Wide membranous bursa supported by dorsal caudal projection and by a wide ray on each side, at the base of which is a large spherical papilla. Bursa 0.012–0.028 long ( Fig. 21 B).

Females: Vulva 0.041–0.108 below oesophago-intestinal junction, lips either not elevated or anterior one only slightly so ( Fig. 21 C). Mature eggs 0.078–0.090 x 0.028–0.035, polar plugs slightly protruding ( Fig. 21 D). Posterior end of ovary not reaching rectum, which is 0.083–0.150 long. Anus terminal. Site: spiral valve

Hosts: Bathyraja interrupta ; Raja rhina ; Raja stellulata

Distribution: Pacific

Record: Moravec et al. 1981

Figures

FIGURE 21. Piscicapillaria (Piscicapillaria) freemani (Moravec, Margolis & McDonald, 1981) Moravec, 1982. A. male, posterior end; B. male, tail, ventral view; C. female, vulvar region; D. egg. (Redrawn from Moravec 2001)