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cercaria |
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cercaria [sər′kar·ē·ə] (invertebrate zoology) The larval generation which terminates development of a digenetic trematode in the intermediate host. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The first phase is host penetration by cercaria, which is usually manifested as a transient (hours) itchy eruption that occurs soon after exposure and is known as swimmer's itch or cercarial dermatitis. After a period of asexual reproduction, tailed, free-swimming larvae called cercaria leave the snail and are transported in water, where they actively seek an appropriate vertebrate host. When ants eat them, they also eat the cercaria of D. |
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