D. medinensis and D. insignis Dracunculus (nematode)

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the life cycle of dracunculus medinensis


the best known species d. medinensis, known commonly guinea worm. parasite found in subcutaneous tissues , muscles of humans, dogs, , cattle , horses. medical name condition dracunculiasis. disease causes cutaneous nodules , subsequent ulcers. anterior end of adult female worm protrudes host animal s body, commonly on lower limb, through ulcer. when worm feels presence of cold water, muscle contractions in body cause uterus (which fills whole body cavity) burst, releasing hundreds of thousands of first-stage larvae water, can find new hosts.


d. insignis infects dogs , wild carnivores, causing cutaneous lesions, ulcers, , heart , vertebral column lesions. d. medinensis, known guinea worm, dragon or fiery dragon. range of d. insignis limited north america.


dna fingerprinting can differentiate between d. medinensis , d. insignis, important efforts eradicate dracunculiasis.








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