Pathobiology of Heterakis gallinarum mono-infection and co-infection with Histomonas meleagridis in layer chickens. Schwarz A(1), Gauly M, Abel H, Daş G . We investigated whether density related effects are directly controlling lifetime fecundity of Heterakis gallinarum. Daily total numbers of H. infecting Brazilian turkeys are reported. The intestinal nematode Heterakis gallinarum appeared with a prevalence of 70% in the infected birds.

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Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Predilection site of adult Heterakis worms is the cecum. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends.

Mem Inst Oswaldo Cruz. The parasite is a diecious species with marked sexual dimorphism.

Control of Flies Biol. Often times, the eggs are brought to the surface of the soil by the movement of earthworms and other soil inhabitants, thus making them more susceptible to ingestion by those animals listed above.

You may be interested in an article in this site on medicinal plants against external and internal parasites. Male worms are fully mature 14 days after they have infected the host.

Roberts and Hetedakis, ; Wright and Hui, ; Wright, Anderson, ; Olsen, Connect with us Help us improve the site by taking our survey. To ensure that they remain worm-free the animals have to be dewormed periodically, depending on the local epidemiological, ecological and climatic conditions.


Numerous classic broad spectrum anthelmintics are effective against Heterakis worms, e. Details Written by P.


A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. Heavy infections can cause inflammation and thickening of the cecum, appearance of nodules and numerous small bleedings in the cecal wall, especially in turkey. Synapomorphy of the Bilateria. During heavy infections, intestinal walls may thicken and exhibit marked inflammation.

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Birds become infected after eating infective eggs either directly with contaminated food or water, or indirectly when eating earthworms or flies. Heterakis gallinarum Schrank Areas of soil with dense foliage better support the eggs by lessening the chances of damage from desiccation, extreme temperatures, or other organisms.

Strict hygiene of feeders and drinkers are a must to avoid or reduce their contamination with eggs. Heterakis gallinarum is gallinatum parasite found in the cecum of numerous galliform birds including chickens, turkeys, and pheasants.

Adult female and male cecal worms differ in length, with the female 10 to 15 mm generally being larger than the male 7 to 13 mm. Heterakie eaten, the egg travels through the digestive system of the host until it reaches the intestine where it hatches.


ADW doesn’t cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Effective treatment is by using mebendazolewhich is normally distributed to a flock of birds in their food and water. Foundations of Parasitology, 7th ed. Roberts and Janovy, ; Wright and Hui, ; Wright, Communication Channels tactile chemical Perception Channels tactile chemical Food Habits Heterakis gallinarum feeds on the cecal contents of the bird in which it resides.

It causes infection that is mildly pathogenic.

Adult Heterakis worms are rather small roundworms, not longer than 15 mm, very thin and of a whitish color.

Their Development and Transmission.

Heterakis gallinarum – Wikipedia

The disease caused by Heterakis worms is called heterakiasis or heterakiosis. Lund and Chute, ; Lund, Ingested eggs release the larvae in the gut’s lumen in a few hours after ingestion.

Embryos are stored agllinarum the female uterus until their release into the host’s feces. Adult female worms in the small intestine pass eggs with the feces about per day per female!