caa a22 4500 445342064 CHVBK 20180317142816.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00436-010-2186-2 doi (NATIONALLICENCE)springer-10.1007/s00436-010-2186-2 The comparative morphology of Marshallagia marshalli and Ostertagia occidentali s (Nematoda: Strongylida, Trichostrongylidae) by scanning electron microscopy [Elektronische Daten] [Hassan Borji, Ahmad Raji, Abol Naghibi] The systematics of the Ostertagiinae is unsettled with no agreement on how many genera and species are present in cattle and sheep. Ten species of Ostertagiinae are commonly parasitic in cattle and sheep. In the global fauna, six of 13 ostertagiine genera are endemic to Iran. The life cycle of Ostertaginae is direct and ingested third-stage larvae after exsheatment in the rumen, penetrate the gastric glands in the abomasal mucosa where two parasitic moults occur before the L5 emerges from the gland. In the present work, Marshallagia marshalli and Ostertagia occidentalis, collected from the abomasums of sheep from Mashhad, Iran, is described. The association of light and scanning electron microscopy (SEM) allowed a detailed analysis of the morphology and ultrastructure of these nematodes. The male body length of M. marshalli and O. occidentalis were 9.3-10.20 and 9.60-10.50mm, respectively. The female body length of M. marshalli and O. occidentalis were 10.10-15.30 and 10.4-15.70mm, respectively. One of cervical papillae is seen 333 and 250μm from the anterior end of male and female body surface in O. occidentalis and 287.5 and 200μm from the anterior end of male and female body surface in M. marshalli, respectively. The size of cervical papillae is 13.3μm in male and 10μm in female in O. occidentalis and 9.33μm in male and 8.57μm in female in M. marshalli. Some other taxonomic features of M. marshalli and O. occidentalis, such as details of cephalic region, the system of longitudinal and surface cuticular ridges (synlophe), the orientation of rays of the copulatory bursa, localization of vulva, morphology of vulvar flap, and posterior end of females are also documented by SEM. Springer-Verlag, 2010 Borji Hassan Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, P.O. Box: 9177948974, Mashhad, Iran aut Raji Ahmad Department of Basic Science, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran aut Naghibi Abol Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, P.O. Box: 9177948974, Mashhad, Iran aut Parasitology Research Springer-Verlag 108/6(2011-06-01), 1391-1395 0932-0113 108:6<1391 2011 108 436 https://doi.org/10.1007/s00436-010-2186-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00436-010-2186-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Borji Hassan Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, P.O. Box: 9177948974, Mashhad, Iran aut NATIONALLICENCE 700 1- Raji Ahmad Department of Basic Science, School of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran aut NATIONALLICENCE 700 1- Naghibi Abol Department of Pathobiology, School of Veterinary Medicine, Ferdowsi University of Mashhad, P.O. Box: 9177948974, Mashhad, Iran aut NATIONALLICENCE 773 0- Parasitology Research Springer-Verlag 108/6(2011-06-01), 1391-1395 0932-0113 108:6<1391 2011 108 436 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer