Table of Contents
What is the morphology of Fasciola gigantica?
gigantica were any isolates 24–27 mm long, 5–13 mm wide with an average length/width ratio of 4.39–5.20 mm (Supplementary Fig. 1). Flukes with intermediate measurements were regarded as an ‘intermediate’ form of Fasciola.
How do I identify my Fasciola?
The standard way to be sure a person is infected with Fasciola is by seeing the parasite. This is usually done by finding Fasciola eggs in stool (fecal) specimens examined under a microscope. More than one specimen may need to be examined to find the parasite.
What are the structures of liver flukes?
Structure of Liver Fluke: Body of liver fluke is soft, flattened, leaf-like with a triangular head lobe (Fig. 21 A). It is brown to pale-grey in colour and measures 2.15-3 cm x 1.2-1.5 cm. The body is covered with a cuticle, the greater portion of which bears minute spines.
How many larval stages are found in Fasciola?
Fasciola hepatica [this species causes hepatic fibrosis in ruminants and humans] Parasite morphology: These flatworms form seven different developmental stages: eggs, miracidia, sporocysts, rediae, cercariae, metacercariae, and adult flukes.
What are the difference between Fasciola hepatica and Fasciola gigantica?
gigantica are longer but narrower, with a smaller shoulder, more anterior testes, larger ventral sucker and shorter cephalic cone compared to F. hepatica. In addition, the branching pattern of the caeca, ovary and testes is different in both species. The eggs are similar in shape, but are slightly larger in F.
What is the shape of liver fluke?
The body of liver flukes is leaf-like and flattened. The body is covered with a tegument. They are hermaphrodites having complete sets of both male and female reproductive systems. They have simple digestive systems and primarily feed on blood.
Which is the first stage of Fasciola?
Miracidium Larva
1. Miracidium Larva: It is the first larval stage in the life cycle of Fasciola hepatica. It swims actively in water in search of secondary host, the snail of genus, Limnaea.
What is the characteristics of Fasciola?
Fasciola hepatica is one of the largest flukes of the world, reaching a length of 30 mm and a width of 13 mm (Fasciola gigantica, though, is even bigger and can reach up to 75 mm). It is leaf-shaped, pointed at the back (posteriorly), and wide in the front (anteriorly).
What is the infective stage of Fasciola?
The adult flukes reside in the large biliary ducts of the mammalian host. By this life cycle, it is known that the infective stage of Fasciola hepatica is metacercaria.
How many stages are found in Fasciola?
What is the vector of Fasciola hepatica?
Pseudosuccinea columella is one of the most widespread vectors of Fasciola hepatica, a globally distributed trematode that affects humans, livestock and wildlife.
What is the economic importance of Fasciola?
Economic Importance for Humans: Negative Liver flukes cause tremendous loss to farmers of cattle and sheep. They are responsible for such diseases as liver rot and black disease, which are detrimental to livestock. They are very hard to control in grazing animals.
What is the pathophysiology of fungal fascioliasis?
Fascioliasis is a parasitic infection typically caused by Fasciola hepatica, which is also known as “the common liver fluke” or “the sheep liver fluke.” A related parasite, Fasciola gigantica, also can infect people. Fascioliasis is found in all continents except Antarctica, in over 70 countries, especially where there are sheep or cattle.
What is fascioliasis and how does it affect humans?
A related parasite, Fasciola gigantica, also can infect people. Fascioliasis is found in all continents except Antarctica, in over 70 countries, especially where there are sheep or cattle.
What is the larval morphology of Fasciola hepatica?
The free swimming larval stages, miracidia and cercariae of F. hepatica, are morphologically more advanced than the adult fluke because they bear organs of locomotion, sense organs, cellular epidermis and a well developed body cavity. 10. Parasitic Adaptations of Fasciola Hepatica:
What are the features of section s of Fasciola?
It is the slide of T. S. of fasciola passing through uterus region. 2. The section is some what elliptical and shows following features: (a) The outermost layer is a thick cuticle and is comprised of closely packed columnar cells.