What is the shape of Fasciola hepatica?
Adults of Fasciola hepatica are large and broadly-flattened, measuring up to 30 mm long and 15 mm wide. The anterior end is cone-shaped, unlike the rounded anterior end of Fasciolopsis buski. Adults reside in the bile ducts of the liver in the definitive host.
What is the Colour of Fasciola hepatica?
(ii) Formation of Egg Capsules in Fasciola Hepatica: The eggs are brownish in colour, oval in shape and measure about 130 to 150 µ in length and 63 to 90 µ in width.
What is the size of liver fluke?
The size of the parasite ranges from 8.0 to 15.0 mm long by 1.5 to 4.0 mm wide and 1.0 mm thick (2). Humans are infected when ingesting uncooked fresh water fish infested with metacercariae. The larvae excyst in the stomach, migrate to the ampulla of Vater, ascend into the bile ducts and live there for 20-30 years.
How big is a liver fluke?
How do you write Fasciola hepatica?
Fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic trematode (fluke or flatworm, a type of helminth) of the class Trematoda, phylum Platyhelminthes.
Is Fasciola a tapeworm?
Fasciolosis is a parasitic worm infection caused by the common liver fluke Fasciola hepatica as well as by Fasciola gigantica. The disease is a plant-borne trematode zoonosis, and is classified as a neglected tropical disease (NTD)….
| Fasciolosis | |
|---|---|
| Frequency | 2 millions |
What is Fasciola life cycle?
Fasciola pass through five phases in their life cycle: egg, miracidium, cercaria, metacercaria, and adult fluke. The eggs are passed in the feces of mammalian hosts and, if they enter freshwater, the eggs hatch into miracidia.
What are flukes in poop?
Intestinal flukes (trematodes) are flat hermaphroditic worms that vary in length from a few millimetres to many centimetres. Approximately 70 species are known to colonise the human intestine, but only a few species are known to cause actual infection. The most common human intestinal trematode is Fasciolopsis buski.
What is habitat of Fasciola hepatica?
Fasciola hepatica has two stages of growing in its life cycle: the sexual stage in its adult form and the asexual in the larval or intermediate stages (Figure 3). The normal habitat of the parasite is biliary ducts and gall bladder of the definite host.
What is Fasciola disease?
Fascioliasis is an infectious disease caused by Fasciola parasites, which are flat worms referred to as liver flukes. The adult (mature) flukes are found in the bile ducts and liver of infected people and animals, such as sheep and cattle.
What are the parasitic adaptations of Fasciola hepatica?
Parasitic Adaptations of Fasciola Hepatica: As adult Fasciola hepatica lives in the liver and bile ducts of sheep as an endoparasite, it is very well adapted for its parasitic mode of life.
Is Fasciola hepatica a vertebrate or invertebrate?
Fasciola hepatica, in addition to sheep, also infects other vertebrates like goat, deer, horse, dog, ass, ox and occasionally man. Its secondary hosts are either Planorbis sps, Bulinus sps., or Limnaea truncatula, all being freshwater gastropod molluscs.
How long does it take for Fasciola hepatica to turn into flukes?
In humans, maturation from metacercariae into adult flukes usually takes about 3–4 months; development of F. gigantica may take somewhat longer than F. hepatica. Fasciola hepatica and F. gigantica are primarily parasites of domestic and wild ruminants (most commonly, sheep, cattle, and goats; also, camelids, cervids, and buffalo).
What is the body wall of F hepatica made of?
The body wall of F. hepatica lacks a cellular layer of epidermis, unlike those of the turbellarians. However, it consists of a thick layer of cuticle followed by a thin basement membrane and underlying muscle layers surrounding the mesenchyma.