Comparative Study of the Effect of Biological Factors on Helminthes Occurrence in Oreochromis niloticus and Tilapia zilli from Lake Manzala, Port Said, Egypt.

Rashied, Hadeer Abd El-Hak; Abu Almaaty, Ali Hussien; Hassan, Ehssan Ahmed; Soliman, Farid Mohamed

doi:10.21608/eajbsz.2016.13460

	Comparative Study of the Effect of Biological Factors on Helminthes Occurrence in Oreochromis niloticus and Tilapia zilli from Lake Manzala, Port Said, Egypt.
Egyptian Academic Journal of Biological Sciences, B. Zoology
Article 2, Volume 8, Issue 1, August 2016, Page 25-32 PDF (277.63 K)
Document Type: Original Article
DOI: 10.21608/eajbsz.2016.13460
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Authors
Hadeer Abd El-Hak Rashied¹; Ali Hussien Abu Almaaty¹; Ehssan Ahmed Hassan²; Farid Mohamed Soliman²
¹Zoology Department, Faculty of science, Port Said University
²Zoology Department, Faculty of Science, Suez Canal University, Egypt
Abstract
The aim of this work is to study the effect of host biological factors on the different parasitic helminthes in Oreochromis niloticus and Tilapia zilli from Lake Manzala. The sex, weight and length of fish were determined. The examination of fish revealed the presence of seven distinct defined metacercariae in addition to undifferentiated metacercariae and nematode larvae. The recovered metacercariae were Centrocestus sp., Haplorchis sp., heterophyes sp., Stictodora sp., Pygidiopsis sp., Echinostoma sp. and Phagicola sp. Results showed that O. niloticus was more susceptible to parasitic infection than T. zilli. The high est prevalence of infection was found in larger fish (weight and length) and in males (Sex) in the case of O. niloticus, while the highest prevalence of infection was found in smaller fish (weight and length) and in females (sex) in T. zilli. The occurrence of each of the helminthes gives a different response to these factors as discussed in this work.
Keywords
metacercariae; sex weight length Oreochromis niloticus Tilapia zilli


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