DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA
YOUSIF, F., AYOUB, M., TADROS, M., EL BARDICY, S., ABOLARINWA, S. (2014). DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA. EKB Journal Management System, 44(2), 373-380. doi: 10.21608/jesp.2014.90391
FOUAD YOUSIF; MAGDA AYOUB; MENERVA TADROS; SAMIA EL BARDICY; SIMON ABOLARINWA. "DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA". EKB Journal Management System, 44, 2, 2014, 373-380. doi: 10.21608/jesp.2014.90391
YOUSIF, F., AYOUB, M., TADROS, M., EL BARDICY, S., ABOLARINWA, S. (2014). 'DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA', EKB Journal Management System, 44(2), pp. 373-380. doi: 10.21608/jesp.2014.90391
YOUSIF, F., AYOUB, M., TADROS, M., EL BARDICY, S., ABOLARINWA, S. DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA. EKB Journal Management System, 2014; 44(2): 373-380. doi: 10.21608/jesp.2014.90391

DESCRIPTION OF TWO NEW CERCARIAE (AN ECHINOSTOME CERCARIA AND A XIPHIDIOCERCARIA) PROCURED FROM BIOMPHALARIA PFEIFFERI (KRAUSS) FROM NIGERIA

Journal of the Egyptian Society of Parasitology
Article 9, Volume 44, Issue 2, August 2014, Page 373-380  XML PDF (702.32 K)
Document Type: Original Article
DOI: 10.21608/jesp.2014.90391
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Authors
FOUAD YOUSIF1; MAGDA AYOUB1; MENERVA TADROS1; SAMIA EL BARDICY1; SIMON ABOLARINWA2
1Department of Environmental Research and Medical Malacology, Theodor Bilharz Research Institute, Imbaba, Egypt.
2Department of Biological Sciences, Federal University of Technology. Minna, Niger State, Nigeria.
Abstract
During parasitological examination of Biomphalaria pfeifferi snails obtained from Niger state (Nigeria), 2 new types of cercariae were found. They are identified to the level of referring to the major group and described here for the first time. They were examined viable and stained with vital stains as well as fixed in 70% alcohol. They were drawn with a camera lucida and photographed. They are identified as an echinostome cercaria and a xiphidiocercaria. The echinostome is characterized by having a ventral sucker almost double in size the oral one. It has a semicircular structure located beyond the oral sucker. Three pairs of penetration glands are found at the anterior portion of the body. The number of collar spines is relatively large (44-46). The flame cells are 17x2 in number. Two main lateral excretory ducts extend anteriorly,
form two typical echinostome loops then pass posteriorly to open together in a diverticulated excretory vesicle. Its tail is relatively long and flattened with 3 fin folds. The tail (640 μm) is longer than the body (475μm). The xiphidiocercaria belongs to the "ornatae" group. It is relatively small (180.5x110μm) with a long stylet (30μm). Its oral sucker is one and half times the size of the ventral sucker. Two excretory ducts extend posteriorly in both sides and become dilated and unite to open in a circular excretory vesicle. Tail is slender shorter than the body and has a dorso-ventral fin fold.
Keywords
Echinostome cercaria; xixphidiocercaria; Biomphalaria pfeifferi; Nigeria
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