A SCANNING ELECTRON MICROSCOPE STUDY ON MONONCHOIDES FORTIDENS (SCHUURMANS-STEKHOVEN, 1951) TAYLOR & HECHLER, 1966 BY QUDSIA TAHSEEN, IRFAN AHMAD, ANWAR L. BILGRAMI and WASIM AHMAD Section of Nematology, Department of Zoology, Aligarh Muslim University, Aligarh-202002, India Detailed SEM observations were made on Mononchoides fortidens (Schuurmans Stekhoven, 1951) Taylor & Hechler, 1966. The cuticle is marked with fine transverse striations and prominent longitudinal ridges or folds. The lip region is continuous and the lips are not prominent. Each lip bears a single papilla but in males four additional setose cephalic papillae are present. The stomal opening is slit-like, bordered by 13-15 bifid cheilorhabdial filaments. Amphids are small and elliptical and situated post-labially. The stoma has a prominent dorsal tooth with an opening of the oesophageal gland. Other structures in the stoma include a subventral pyramidal tooth, ventro-lateral toothlets or denticles, a dorsal plate and paired dorso-lateral plates. The cheilorhab- dions are apparently not fused but rib-like, appearing as bifid structures in face view. The vulva is circular, situated between two longitudinal ridges. The male posterior region has nine pairs of papillae of which three are pre-cloacal and six post-cloacal. Phasmids are large pore-like. Keywords: SEM morphology, stoma, ridges, caudal
Nematologica – Brill
Published: Jan 1, 1992
Keywords: ridges; stoma; Mononchoides fortidens; SEM morphology; caudal papilla
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