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Spicule (nematode) : ウィキペディア英語版 | Spicule (nematode)
In nematodes (roundworms), spicules, or copulatory spicules, are needle-like mating structures found only in males. Males may have one or two spicules, which serve to open the vulva of females, and facilitate the transmission of sperm, although sperm is not transferred directly by or through the spicules.〔Chitwood, B. G. & Chitwood, M. B. (1950). Introduction to Nematology (Vol. 1). Baltimore: Monumental Printing Co. (Function of spicule: pages 123-124)〕 ==References==
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