FIRST RECORD OF EUCLINOSTOMUM HETEROSTOMUM FROM THE NATURALLY-INFECTED HERON “ARDEOLA RALLOIDES” IN EGYPT: A LIGHT & SCANNING ELECTRON MICROSCOPY STUDY
2019; Volume: 72; Issue: 72 Linguagem: Inglês
10.21608/ejz.2019.18363.1015
ISSN2682-3160
Autores Tópico(s)Coccidia and coccidiosis research
ResumoFour adult specimens of clinostomatid parasites were recovered from the buccal cavity and oesophagus of a naturally-infected male squacco heron, Ardeola ralloides (Aves: Ardeidae), collected in July 2019 from Giza Province, Egypt.The rate of natural infection was recorded as 10% (1/10).The parasite has the typical body plan organization of Euclinostomum heterostomum Rudolphi, 1809 (Digenea: Clinostomatidae) with minor differences in certain organs measurements.The body dimensions measure 5.57-6.71× 2.29-2.97mm (length × maximum body width).The oral sucker locates in the centre of the oral collar and measures 0.36-0.44× 0.53-0.64mm, while the ventral sucker locates in the anterior third of body and measures 0.65-1.10× 0.63-1.27mm.The right intestinal caecum gives rise to 11-14 diverticula, while the left intestinal caecum gives rise to 12-15 diverticula.The testes are tandem and lie in the posterior third of the body.The anterior testis is U-shaped and measures 0.61-0.70× 0.85-1.26mm, while the posterior testis is tripartite and measures 0.60-0.67× 0.66-0.69mm.The ovary is intertesticular, dextral to median body plan, and measures 0.22-0.25 × 0.33-0.37mm.The uterus is pretesticular, intercaecal, filled with hundreds of eggs, and measures 1.54-2.13× 0.59-1.32mm.The uterine eggs are ellipsoidal; each measures 0.11-0.12× 0.06-0.08mm.The excretory pore is subterminal, intercaecal, and measures 0.12-0.14× 0.12-0.14mm.In addition, the surface topographies of the ventral and the dorsal surfaces of body were described.
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