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.

Author: Doull Akinobar
Country: El Salvador
Language: English (Spanish)
Genre: Life
Published (Last): 15 October 2015
Pages: 71
PDF File Size: 20.94 Mb
ePub File Size: 2.47 Mb
ISBN: 308-5-34117-523-7
Downloads: 54708
Price: Free* [*Free Regsitration Required]
Uploader: Bralmaran

Anderson, ; Olsen, Reproduction Like most other gallinagum species, H. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.

Heterakis gallinarum – Wikipedia

No data are available on the lifespan of adult worms, but the eggs of H. Effective treatment is by using mebendazolewhich is normally distributed to a flock of birds in their food and water.

They are particularly harmful and often fatal for turkeys. Secondary infections are characterized by the formation of nodules in the cecum and the sub mucosa of the cecum. Chemoreceptors are likely used in gallniarum a mate, and sexual pheromones have been identified for over 40 nematode species.

Heterakis dispar, Heterakis isolonche. Females are longer than males. The Animal Diversity Galllinarum is an educational resource written largely by and for college students.

This page was last edited on 23 Marchat Females reach sexual maturity and start to lay eggs sometime between the age of 24 and 36 days. If available, follow more specific national or regional recommendations for Heterakis control. Heterakis eggs are not longer than 77 micrometers.

In egg-laying hens, heavy infection significantly reduces egg production. Adult Heterakis worms are rather small roundworms, not longer than 15 mm, very thin and of a whitish color. The worms have a tubular digestive system with two openings, the mouth and the anus. Located anteriorly, these invaginations of the cuticle are made of many neurons which interpret and transmit incoming chemical signals.

Once eaten, the egg travels through the digestive system gaplinarum the hrterakis until it reaches the intestine where it hatches.

There was a problem providing the content you requested

During heavy infections, intestinal walls may thicken and exhibit marked inflammation. In other projects Wikimedia Commons.

Predilection site of adult Heterakis worms is galliarum cecum. Help us improve the site by taking our survey.

This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.

Anderson, ; Lund, Embryos are stored in the female uterus until their release into the host’s feces. Heterakis gallinae Heterakis papillosa Heterakis vesicularis Ascaris gallinae Ascaris vesicularis.

Anderson, ; Lund, Ecosystem Roles Heterakis gallinarum is a parasite of galliform birds, feeding upon their cecal contents. Their hetreakis is completed in the lumenbut some may enter the mucosa and remain for years without further development.

Biology, prevention and control.

By utilizing the force that the contraction of the longitudinal muscles creates, the cuticle shortens on one side then lengthens on the other, creating the diagnostic S-shaped movement of nematodes.

Parasitic nematodes of tetrapods Parasites of birds Ascaridida Parasitic diseases.

However, it often carries a protozoan parasite Histomonas meleagridis which causes of histomoniasis blackhead disease. Earthworms may ingest the eggs of H. Within the egg, the larvae develop to the infective second stage.

Journal of Parasitology46 Their eggs are found to live for years in soil making it gallinaeum to eliminate H. The disease caused by Heterakis worms is called heterakiasis or heterakiosis.