The Effect of Some Biological Factors on Helminthes infecting Clarias gariepinus from Lake Manzala, Port Said, Egypt

Hadeer Rashied,Ali Abu Almaaty,Maha Soliman,Ehssan Hassan

doi:10.21608/eajbsz.2016.13461

Abstract

This work aimed to study the effect of host biological factors on the different parasitic helminthes in Clarias gariepinus from Lake Manzala. The sex, weight and length of fish were determined. Examination of C. gariepinus fish for helminthes revealed the presence of three morphologically distinct adult helminthes in the digestive tract which were Polyonchobothrium clarias and Monobothrium wageneri (Cestodes) and Neoechinorhynchus rutili (Acanthocephala) and there were also the cestodes larvae (Plerocercoid) and undifferentiated cestodes. Two types of defined mataceracariae were observed in the different tissues which were Ornithodiplostomum sp. and Prohemistomum sp. (trematodes). The undifferentiated metacercariae were also recorded. Results showed that the highest prevalence of infection was found in smaller fish (weight and length) and in females (sex). The occurrence of each of the helminthes gives a different response to these factors as discussed in this work.

Highlights

C. gariepinus is one of the most plentiful and widely distributed fish species in the River Nile, its tributaries and lakes (Boulanger, 1907). Abdel-gaber et al (2015) observed 249 helminthes belonging to four different genera from C. gariepinus collected from Lake Manzala
Abdel-gaberet al. (2015) found that female fish of C. gariepinus collected from Lake Manzala had higher prevalence value than males and there was no significant difference in infestation rate between the two different sexes
Examination of C. gariepinus fish for helminthes revealed the presence of three morphologically distinct adult helminthes in the digestive tract which were P. clarias and M. wageneri (Cestodes) and N. rutili (Acanthocephala) and there were the cestodes larvae (Plerocercoid) and undifferentiated cestodes

Summary

Introduction

C. gariepinus is one of the most plentiful and widely distributed fish species in the River Nile, its tributaries and lakes (Boulanger, 1907). Abdel-gaber et al (2015) observed 249 helminthes belonging to four different genera from C. gariepinus collected from Lake Manzala. There were minor variations in prevalence and mean intensity between male and female C. gariepinus fish infected with metacercariae (Shotter, 1980; Nkwengulila, 1995; Mwita, 2002; Musiba, 2004; and Musiba and Nkwengulila, 2006). (2015) found that female fish of C. gariepinus collected from Lake Manzala had higher prevalence value than males and there was no significant difference in infestation rate between the two different sexes.

Objectives

Results

Conclusion