E-ISSN 2536-9520 | ISSN 1110-2047
 

Original Article 


Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability

Wafaa G. Mahmoud, Nagwa T. Elsharawy, Mahmoud Hashem.

Abstract
The study was designed with the aims of determining the fish parasites metacercariae on Elibrahimiyah Canal (from River Nile) in Assuit governorate and tests the effect of freezing on the viability of parasite on Nile Tilapia “Oreochromis niloticus”. 620 of Nile Tilapia were caught from Elibrahimiyah Canal, samples measured, weighed, and then efficiently inspected of the skin, gills, internal organs, and musculature grossly and microscopically with and without stain. Positive parasitism’s fish stored under freezing condition below -4°C to -7°C for about 7 days to measure the effect of freezing on its viability. The total prevalence rate of Clinostomum spp. and Euclinostomum ardeolae metcercaria infection in Nile Tilapia were about 40/620 (6.45%) totally as following; 10/620 (1.61%) and 30/620 (4.84%) for Clinostomum spp. and Euclinostomum ardeolae metcercaria infection respectively. Macroscopic and Microscopic Examination of Euclinostomum ardeolae metacercaria and Clinostomum spp. declared their shape in details. In addition to the inhibition effect of freezing on the Viability of Euclinostomum ardeolae and Clinostomum spp. metacercaria. The susceptibility of man to yellow grub increases the medical importance of examination of Oreochromis niloticus in Assiut governorate although, the evident of it in Nile tilapia belonging to Elibrahimia Canal are rarely. Prevention of metcercariae requires avoidance of introduction of the parasite snails and aquatic birds and alteration of the water environment. More attention should be given to the fish parasites among Elibarahimia canal. The effectiveness of freezing to kill viable metcercaria including the freezing temperature and period needed to freeze the fish tissue.

Key words: snails, Euclinostomum ardeolae, Clinostomum spp., metacercaria., zoonosis, freezing.


 
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How to Cite this Article
Pubmed Style

Mahmoud WG, Elsharawy NT, Hashem M. Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. AJVS. 2018; 59(2): 49-56. doi:10.5455/ajvs.3043


Web Style

Mahmoud WG, Elsharawy NT, Hashem M. Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. https://www.alexjvs.com/?mno=3043 [Access: December 08, 2023]. doi:10.5455/ajvs.3043


AMA (American Medical Association) Style

Mahmoud WG, Elsharawy NT, Hashem M. Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. AJVS. 2018; 59(2): 49-56. doi:10.5455/ajvs.3043



Vancouver/ICMJE Style

Mahmoud WG, Elsharawy NT, Hashem M. Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. AJVS. (2018), [cited December 08, 2023]; 59(2): 49-56. doi:10.5455/ajvs.3043



Harvard Style

Mahmoud, W. G., Elsharawy, . N. T. & Hashem, . M. (2018) Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. AJVS, 59 (2), 49-56. doi:10.5455/ajvs.3043



Turabian Style

Mahmoud, Wafaa G., Nagwa T. Elsharawy, and Mahmoud Hashem. 2018. Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. Alexandria Journal of Veterinary Sciences, 59 (2), 49-56. doi:10.5455/ajvs.3043



Chicago Style

Mahmoud, Wafaa G., Nagwa T. Elsharawy, and Mahmoud Hashem. "Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability." Alexandria Journal of Veterinary Sciences 59 (2018), 49-56. doi:10.5455/ajvs.3043



MLA (The Modern Language Association) Style

Mahmoud, Wafaa G., Nagwa T. Elsharawy, and Mahmoud Hashem. "Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability." Alexandria Journal of Veterinary Sciences 59.2 (2018), 49-56. Print. doi:10.5455/ajvs.3043



APA (American Psychological Association) Style

Mahmoud, W. G., Elsharawy, . N. T. & Hashem, . M. (2018) Prevalence of Metacercariae in Nile Tilapia (Oreochromis Niloticus) at Assuit Province and the Effect of Freezing on Its Viability. Alexandria Journal of Veterinary Sciences, 59 (2), 49-56. doi:10.5455/ajvs.3043





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