Encysted metacercariae of family Heterophyidae in infected fish in Dakahlia Governorate, an endemic focus in Egypt.

  title={Encysted metacercariae of family Heterophyidae in infected fish in Dakahlia Governorate, an endemic focus in Egypt.},
  author={Mai A. Hegazi and Ayaat T. Hassan and Thanaa M Al-Nashar and Omaima I. Abo-Elkheir and Fatma Mohamad Ebrahem El-Lessi},
  journal={Journal of the Egyptian Society of Parasitology},
  volume={44 3},
The study re-evaluated the status of encysted metacercariae (EMC) of Family Heterophyidae in fresh and brackish water fish in an endemic focus in Egypt, as well as to study their morphological pattern. Seasonal variation of EMC was matched with their prevalence and intensity in infected fish. The study covered a period of one year from first of April 2011 to end of March 2012. The total percent of infection in the examined fish was 71.9% and 42.6% for brackish and fresh water respectively. The… 

Figures and Tables from this paper

Occurrence of Encysted Metacercariae in Tilapia Nilotica (Oreochromusniloticus) in Alexandria Province and their Public Health Significance

Investigation of the prevalence and distribution of different EMC in Oreochromus niloticus found that the prevalence was higher in summer followed by spring and autumn then winter, and the average number of EMC per gram of fish tissues was highest in trunk region followed by tail and lowest in head region.

Impact of fish infected with encysted metacercariae on the public health, at Cairo District, Egypt

Examination of 452 fresh and brackish water fish, from Cairo district, Egypt, representing Clarias gariepinus, Lebeo noliticus and Mugil cephalus, revealed the occurrence of nine species of encysted metacercariae, belonging to family Heterophyidae, and the impact of infection of humans and animals is discussed.

Prevalence of heterophyid infection in tilapia fish “Orechromas niloticus” with emphasize of cats role as neglected reservoir for zoonotic Heterophyes heterophyes in Egypt

A high infection rate of EMC in edible tilapia fish in the study area is clarifies and highlights the possible role of cats as a reservoir of the digenetic trematodes particularly the zoonotic H. heterophyes, that necessities planning and application of suitable control measures.

Morphological characterization and histopathological alterations of homologs Heterophyid metacercarial coinfection in farmed mullets and experimental infected pigeons

The findings suggest that the heterophyids EMCs in mullets have genera-specific morphological characters and may induce histopathological changes in surrounding host-associated tissues.

Intestinal helminths of stray dogs from Tunisia with special reference to zoonotic infections

Results of this study emphasize the need to interrupt parasite transmission using preventive approaches in zoonoses control programmes mainly against cystic echinococcosis, as well as reducing transmission to other animals by regular dog dosing treatments and proper management of dog populations.

Prevalence of Parasitic Infections with Zoonotic Potential in Tilapia: A Systematic Review and Meta-Analysis

The results provide useful information on the development of epidemiological programs for the control of zoonoses associated with parasites in tilapia and in the design, planning, and implementation of future research.

Insights into the effects of inducible and neuronal nitric oxide synthase isoenzymes in experimental intestinal heterophyiasis

Results obtained in the study suggested that inhibition of iNOS, to some extent, improved intestinal architecture, while inhibition of nNOS failed to eliminate experimental intestinal heterophyiasis.



Prevalence and site preferences of heterophyid metacercariae in Tilapia zilli from Ismalia fresh water canal, Egypt.

Factors affecting prevalence and site preferences of heterophyid metacercariae (MC), a freshwater fish from Ismailia fresh water canal, Egypt, were investigated and variation dependant on the type of infection (single or mixed infections) was found.

Preliminary observations on infection of brackish and fresh water fish by heterophyid encysted metacercariae in Egypt

The results indicate that heterophyid infections occur in brackish and fresh water fishes in northern Egypt, where the parasites are indigenous.

Prevalence of heterophyiosis in Tilapia fish and humans in Northern Egypt

A total of 100 Tilapia fish samples were collected from brackish water and fresh water resources, Northern Egypt, and examined for heterophyid encysted metacercariae (EMC) during the period from August 2007 to July 2008, finding significant differences in parasite occurrence.

Some factors affecting metacercarial infections in Tilapia zilli from Lake Timsah, Ismailia, Egypt

Prevalence, intensity and abundance of each metacercaria species showed different responses to the considered factors as discussed in this work, and males were more infected than females.

Studies on intestinal trematodes in Korea [XII. Two cases of human infection by Stellantchasmus falcatus.

Two cases of human infection by Stellantchasmus falcatus (Heterophyidae) were identified by collection of adult worms during the treatment of some tapeworm infections in Korea by stereomicroscopy of the diarrheal stools.

Epidemiological study of heterophyiasis among humans in an area of Egypt.

The prevalence and intensity of infection of heterophyiasis were most common in people 15-45 years, and greater in females than males, and the highest intensity was detected among fishermen.

Intestinal trematodes of humans in Korea: Metagonimus, heterophyids and echinostomes.

  • J. ChaiS. H. Lee
  • Biology
    Kisaengch'unghak chapchi. The Korean journal of parasitology
  • 1990
Biological and epidemiological studies on the above species have shown that Metagonimus, heterophyids and echinostomes are all prevalent indigenously in Korea except H. dispar, of which the human cases were infected when they came to the Middle East.