First record of an intermediate snail host; Thiara scabra (O. F. muller, 1774) of the lung (Paragonomus) and intestinal (Haplorchris) Flukes in Qena Province, Egypt. | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 1, Volume 22, Issue 2, April 2018, Pages 1-10 PDF (14.74 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2018.7977 | ||
| Authors | ||
| Ahmed S. Moustafa; Elamier H. M. Hussien | ||
| Abstract | ||
| This research establishes a new record of the freshwater Thiarid snail, Thiara scabra, collected from the River Nile and its branches at Qena governorate, Upper Egypt. The shell varies in size and form, pale brown in color with reddish - brown patches or spots arranged on the whole whorls. It has an elongated turreted shell with a high spire of 8½ whorls that regularly increase in size and descending step - like with distinct sutures. Whorls are often shouldered from above and rounded from below. A row of spines, sculptured with vertical ribs, bearing prominent spines directed obliquely outward are found at the beginning of each whorl. Its surface shows a rough spiral striation. On the body, a whorl near the umbilical region striation of strong ridge can be seen. The umbilicus is closed. The most proximal three spires are found to be eroded. Aperture is almost vertical, oval, pointed above, and rounded below. The peristome is not continuous. The two ends are connected by a white callus against the penultimate whorl; exterior margin sinuous projects forward with a round curve in the middle; it recedes in the upper end and lower part and its basal margin is somewhat channeled. Operculum is a horny dark brown; the nucleus is eccentrical as it is at the left lower corner. Growth lines fan out to the tip and to the side of the operculum. The soft parts show the usual parts of the gastropod body, which are the head, foot and the visceral mass. The head and foot of the active snail can be seen protruding out of the shell. The pallial organs are typically like thiarids in form and position. | ||
| Keywords | ||
| Gastropoda; Thiaridae; Thiara scabra; Intermediate host; lung fluke; Intestinal fluke; Egypt | ||
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