Which are the larval forms of Fasciola hepatica?
Larval Stages:
- Miracidium Larva: It is the first larval stage in the life cycle of Fasciola hepatica.
- Sporocyst Larva: Miracidium loses its apical gland, penetration grand, brain and eyespots and changes into a saclike sporocyst larva.
- Redia Larva:
- Cercaria Larva:
- Metacercaria:
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 is a Rediae?
Definition of redia : a larval form of a digenetic trematode (such as a liver fluke) that is produced within a sporocyst, has a mouth, pharynx, and gut, and contains cells which give rise to other rediae or to cercariae — see also redial entry 3.
Which of the following is first of larval stage in Fasciola?
The correct sequence of various larval stages of Fasciola hepatica is: a) Miracidium → Cercaria → Metacercaria → Redia → Sporocysts.
Which one is not larval stage of Fasciola?
So the correct answer is ‘Bipinnaria’.
How many Rediae are produced from each sporocyst?
In this host, through larval stages of sporocyst, redia (sometimes two generations), it gives origin to many cercariae (about 4,000 from one miracidium, more than 500,000 from one snail).
Which larval stage of Fasciola does not produce several larva?
Correct answer:(d) Cercaria.
Is Fasciola hepatica an adaptation of Galba truncatula?
Belfaiza, M., Moncef, M. & Rondelaud, D. (2005) Fasciola hepatica: an unusual case of adaptation to a Moroccan population of Galba truncatula. Parasitology Research 95, 374 – 378. CrossRef Google Scholar PubMed.
Is Lymnaea truncatula exposed to Fasciola hepatica miracidia exposed to cupric chloride?
Rondelaud, D. ( 1995) The characteristics of redial generations in Lymnaea truncatula exposed to Fasciola hepatica miracidia after poisoning by sublethal doses of cupric chloride. Veterinary Research 26, 21 – 26. Google Scholar PubMed
How do rediae develop into generations?
The development of generations is dependent on the behaviour of the first mother redia of the first generation. If this redia remains alive throughout snail infection, it produces most second-generation rediae.