01761nas a2200169   4500008004100000020002000041245012700061210006900188260001200257300001000269520112400279100001901403700001501422700001701437700002001454856011701474       2012                        eng d  a09320113 (ISSN)00aThe morphology and histopathology of Nephridiacanthus major (Acanthocephala: Oligacanthorhynchidae) from hedgehogs in Iran0 amorphology and histopathology of Nephridiacanthus major Acanthoc  c2012///  a1 - 63 aThe morphology of Nephridiacanthus major (Bremser 1811 in Westrumb 1821) Golvan, 1962 collected from the long-eared hedgehog Hemiechinus auritus (Gmelin 1770) and the Eastern European hedgehog Erinaceus concolor Martin, 1838 (Erinaceidae) is described using SEM for the first time. This acanthocephalan was previously described from hedgehogs in Europe, Asia, and Africa. Measurements of specimens from Iran, Bulgaria, Germany, Central Asia, Morocco, and Egypt show considerable variations in the size of the trunk, proboscis, proboscis hooks and receptacle, and eggs. The SEM studies add new perspectives to its morphology. Features observed for the first time include the near terminal position and shape of the female gonopore and orifice, among others. Histopathological studies for this species are reported for the first time. Tissue sections show extensive damage near the proboscis with hemorrhaging and formation of collagenous connective tissue, compression of the intestinal mucosa, obstruction of intestinal lumen, and extensive necrosis of host epithelial tissue. © 2012 Springer-Verlag Berlin Heidelberg.1 aHeckmann, R.A.1 aAmin, O.M.1 aHalajian, A.1 aEl-Naggar, A.M.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84867236188&partnerID=40&md5=c32e9c0a3592a598b589d46ddef4ed2402242nas a2200277   4500008004100000020002000041245021500061210006900276260001200345300001400357490000700371520124000378653001901618653001601637653003201653653002501685653001901710653002401729653001501753653000801768100001501776700001901791700001701810700002001827856011701847       2011                        eng d  a12302821 (ISSN)00aThe morphology of an unique population of Corynosoma strumosum (Acanthocephala, Polymorphidae) from the Caspian seal, Pusa caspica, in the land-locked Caspian Sea using SEM, with special notes on histopathology0 amorphology of an unique population of Corynosoma strumosum Acant  c2011///  a438 - 4450 v563 a<p>Over 700 specimens of Corynosoma strumosum (Rudolphi, 1802) L&uuml;he, 1904 were collected from one young male Caspian seal, Pusa caspica (Gmelin) in the southern land-locked Caspian Sea in April, 2009. Collected worms showed consistent variations from those reported by other observers using light microscopy especially in proboscis hook and trunk spine patterns. SEM images revealed many features that have not been previously reported including the shape and distribution of trunk spines, dorsoventral differences in proboscis hooks and their organization, the baldness of anterior proboscis, the rough egg topography, epidermal micropores, and variations in the female gonopore. This isolated population of C. strumosum from the land-locked Caspian Sea is distinguished from others reported from open waters elsewhere by the distribution of trunk spines, consistently smaller size of trunk and testes, larger eggs, and fewer proboscis hooks. Histopathological sections reveal the invasive path of worms in host tissue with damage to intestinal villi and worm encapsulation. Information obtained from SEM studies and histopathological sections is reported for the first time. &copy; Versita Warsaw and Springer-Verlag Wien.</p>
10aAcanthocephala10aCaspian Sea10aCaspian seal (Pusa caspica)10aCorynosoma strumosum10ahistopathology10aisolated population10amorphology10aSEM1 aAmin, O.M.1 aHeckmann, R.A.1 aHalajian, A.1 aEl-Naggar, A.M.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-83055163394&partnerID=40&md5=5446767e9b05c873094bf5496227135a