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Neck threadworms have an indirect life cycle
live under the horse's skin
are picked up by the biting midge when it feeds on the horse
Microfilariae develop into infective larvae in the midge's mouth and are passed when the midge bites a horse.
Adult Onchocerca cervicalis are not affected by deworming agents and recurrent infections result. Ivermectin (anti parasite medication) should be repeated at 4 month intervals to keep the skin free of disease.
-Neck Threadworms are also known as Onchocerca
-Microfilariae is the name given to the larvae stage.
-Description- They are long and coiled in shape with the males being around 7cm in length and females being around 30cm in length.
http://www.horsehealthdewormer.com/neck_thrdwrms.htm
http://www.equiaid.com/neckthreadwrms.htm
http://babayagasmirror.blogspot.com/2010/08/neck-thread-worms-part-2.html
Threadworms depend on another organism
•The neck microfilariae lives under the horse's skin and wait to picked up by a biting midge.
•develop to the infective larvae stage ( 3 weeks)
•when the midge bites another horse the neck threadworms are able to enter the horses system v
Threadworms travel to ligaments in the horses neck , & tendons and underbelly of the horses body.