Parodontophora breviamphida ( Timm, 1952 ) Timm, 1963

Abolafia, Joaquín, Ruiz-Cuenca, Alba N., Fernandes, Berenice M. M., Cohen, Simone C. & Cárdenas, Melissa Q., 2015, Description of free-living marine nematodes found in the intestine of fishes from the Brazilian coast, Zootaxa 3948 (3), pp. 549-572 : 567

Parodontophora breviamphida ( Timm, 1952) Timm, 1963

( Figs 11 I,J & 13)

Material examined. One female has been examined.

Measurements. See Table 2 .

Description. Female: Body 1.31 mm long, with sigmoid habitus. Cuticle with transverse striations. Lip region with six fused lips with four well-developed cephalic setae, 8 µm long or 0.6 times the lip region diameter long. Amphideal fovea open-looped, shepherd's crook in form, overlapping anterior part of stoma, with shorter branch extending one third of the stoma length and the longer extending a half, to the mid-length of the tubular stoma. Stoma divided into two parts, anterior with six protrusible odontia and comprising one third of the its length and posterior with strongly cuticularized walls, comprising two thirds. Pharynx short and posteriorly swollen (in bad condition). Excretory pore not observed. Cardia and intestine in bad condition. Reproductive system didelphicamphidelphic; ovaries short, outstretched, with oocytes in two rows in germinative part and in one row in trest; oviducts poorly developed; uteri swollen, length about 3.5 times corresponding body diameter, with rounded uterine eggs 58 µm in diameter; vagina short. Rectum slightly shorter than anal body diameter. Tail conoidelongate, anterior half convex-conoid dorsally, tapering to a sub-cylindrical part slightly swollen at terminus and ending in a spinneret.

Male: Not found.

Distribution. Parodontophora breviamphida was reported previously from Maryland, USA in bottom mud ( Timm 1952), the Maldives ( Gerlach 1962) and Florida, USA ( Wieser & Hopper 1967). This is its first report from Brazil (see Venekey et al. 2010).

Remarks. The specimen examined agrees well with the material examined by Wieser and Hopper (1967). However, from the type females examined by Timm (1952) and the material examined by Gerlach (1962), as Odontophora pacifica Allgén, 1947 , it has somewhat smaller females (1.31 vs 1.55–1.60 and 1.4 mm long, respectively).

Figures

FIGURE 11. Dorylaimopsis pellucida (Cobb, 1920) Jensen, 1979. A: Female stoma. B: Male stoma. C: Neck. D: Anterior branch of the female genital system. E: Entire male. F: Entire female. G: Female posterior end. H: Male posterior end. Parodontophora breviamphida (Timm, 1952) Timm, 1963 (female). I: Stoma. J: Tail.