What is Dicrocoelium dendriticum?
Causal Agents. The trematode Dicrocoelium dendriticum, the lanceolate fluke or lancet fluke, is a common parasite of ruminants but humans can be accidental definitive hosts. Another species, D. hospes, is responsible for human infections in West Africa.
What is the recommended treatment for Dicrocoelium dendriticum?
Effective anthelmintic treatments (>90% reduction) in both cattle and sheep are albendazole at 15–20 mg/kg in a single dose or two doses of 7.5 mg/kg on successive days, or netobimin at 20 mg/kg. Praziquantel (50 mg/kg) has been shown to decrease egg-shedding by ~90% in llamas.
Is Dicrocoelium dendriticum zoonotic?
Dicrocoelium dendriticum is the causative agent of a rare food-borne zoonosis of the human biliary tract, dicrocoeliasis, for which few human prevalence data are available. Infection occurs through the ingestion of ants containing metacercariae, whereas pseudo-infections (presence of D.
How does Dicrocoelium Dendriticum cause disease?
The lancet fluke infection is caused by D. dendriticum in sheep, goats, deer and humans. The adult worms live in the bile duct of the host giving rise to various liver troubles. The disease is acquired by ingestion of metacercariae while snails and ants serve as the intermediate hosts in the worm’s life cycle.
What disease does clonorchis sinensis cause?
What is Clonorchis? Clonorchis is a liver fluke parasite (trematode or worm) that can infect the liver, gallbladder, and bile duct. Found across parts of Asia, it is also known as the Chinese or oriental liver fluke.
What is the infective stage of Dicrocoelium Dendriticum?
Life cycle Dicrocoelium dendriticum spends its adult life inside the liver of its host. After mating, the eggs are excreted in the feces. The first intermediate host, the terrestrial snail (Cochlicopa lubrica in the United States), consumes the feces, and becomes infected by the larval parasites.
What is Dicrocoeliasis?
Dicrocoeliasis is a zoonotic infection of herbivorous mammals such as cattle, sheep, rabbits and goats caused by Dicrocoelium dendriticum (lancet/liver fluke) or Dicrocoelium hospes with widespread distribution in Europe, Asia, North America and Africa.
How does Fasciola hepatica survive?
hepatica is adapted to produce a large number of eggs, which increases its chances of survival, as many eggs are destroyed on release into the environment. Also, F. hepatica is hermaphrodite, thus all flukes can produce eggs, increasing the number of offspring produced by the population.
What is the type of life cycle that Dicrocoelium species have?
Dicrocoelium dendriticum spends its adult life inside the liver of its host. After mating, the eggs are excreted in the feces. The first intermediate host, the terrestrial snail (Cochlicopa lubrica in the United States), consumes the feces, and becomes infected by the larval parasites.
Can ants carry worms?
Deadly Ant Parasites in the Ant Colony Individual ants can be targeted by parasites. For example, nematodes (or roundworms) have been found in the abdomen of several different ant species.
How do you stop Clonorchis sinensis?
Do not eat raw or undercooked freshwater fish. Lightly salted, smoked, or pickled fish can contain infectious parasites. Drinking river water or other nonpotable water will not lead to infection with Clonorchis.
What larval stages are available in the life cycle of Dicrocoelium Dendriticum?
The larval stages of D. dendriticum evolve in about 3-4 months in snails from the miracidia which pass into the snails with the eggs, to first and second generation sporocysts. Numerous cercariae develop in the second generation sporocysts [5,6].
What is the habitat of Fasciola?
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 do Fasciola eat?
Fasciola hepatica is acquired by eating aquatic vegetation on which metacercariae are attached. Upon ingestion the metacercariae are released, penetrate the gut wall, traverse the peritoneal cavity, pass through the liver capsule into the liver parenchyma and enter the bile duct.
Where does Clonorchis sinensis live?
C. sinensis is estimated to be the third-most prevalent worm parasite in the world. It is endemic to Russia, Japan, China, Taiwan, Korea, and Southeast Asia, especially Vietnam.