Paracuaria adunca (Creplin, 1846) Anderson & Wong, 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 : 115

* Paracuaria adunca (Creplin, 1846) Anderson & Wong, 1981

Description (after Anderson & Wong 1982). In the apparent absence of a description of L3 from fishes the

following is based on Anderson & Wong’s (1982) account of L3 from experimentally infected amphipods. L3

slender and delicate, 2.60 (2.20–2.80) long, 0.074 (0.070–0.090) wide. Cuticle transversely striated. Head with

prominent triangular pseudolabia. Interlabia each divided into two equal lobes. Two pairs cephalic papillae

submedially at base of pseudolabia. Amphids inconspicuous. Buccal cavity narrow, widening at oral opening and

lined with thick cuticle. Deirids small, near nerve ring. Excretory pore opens 0.162 (0.14–0.19) from anterior end

( Fig. 70 A). Total oesophagus [muscular plus glandular] 1.25 (1.12–1.44) long. Rectum tubular and surrounded by

three oval-shaped rectal cells with prominent nuclei. Tail with slight dorsal curve, and rounded tip. Inconspicuous

phasmids located subventrally ( Fig. 70 B). Male genital primordium lies free in pseudocoelom; female primordium

attached to body wall by vaginal primordium.

Site: mesenteries

Hosts: Apeltes quadracus (2); Carassius auratus (1); Cottus sp. (1); Fundulus heteroclitus (3); Gasterosteus aculeatus (1, 2); Notropis hudsonius (1); Pungitius pungitius (2, 3); Semotilus atromaculatus (1)

Distribution: Nova Scotia, Ontario

Records: 1. Anderson & Wong 1982 (EX, ON); 2. Marcogliese 1992b (NS); 3. Marcogliese 1995 (NS)

Figures

FIGURE 70. * Paracuaria adunca (Creplin, 1846) Anderson & Wong, 1981. A. L 3, anterior end, lateral view; B. L 3, posterior end, lateral view. (Redrawn from Anderson & Wong 1982)