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User:Serge925

From Wikipedia, the free encyclopedia
ruРусскийродной язык этого участника.
en-3This user can contribute with an advanced level of English.
de-2Dieser Benutzer hat fortgeschrittene Deutschkenntnisse.
zh-1該用戶能以基本中文進行交流。
该用户能以基本中文进行交流。
This user is interested in linguistics.
這用戶對中華文化感興趣。
这用户对中华文化感兴趣。
This user is interested in Chinese culture.

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Giant golden mole, type host of H. niekerki
Giant golden mole, type host of H. niekerki

Heptamegacanthus is a genus of acanthocephalans (thorny- or spiny-headed parasitic worms) containing a single species, Heptamegacanthus niekerki. This worm is a parasite of the endangered giant golden mole (example pictured) found only in isolated forests near East London and in the Transkei, both in South Africa. The worms are about 4 millimetres (0.2 in) long and 2 millimetres (0.08 in) wide with minimal sexual dimorphism. Their body consists of a short trunk and a proboscis with 40 to 45 hooks arranged in rings, which are used to pierce and hold the rectal wall of its host. The life cycle of H. niekerki remains unknown; however, like other acanthocephalans, it likely involves complex interactions with at least two hosts. Although the intermediate host for Heptamegacanthus is not definitively identified, it is presumed to be an arthropod, such as an insect, which is eaten by the giant golden mole. The worms then mature and reproduce sexually within the mole's lower gastrointestinal tract, creating eggs which are released in its feces. (Full article...)

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