| 词条 | Spicule (nematode anatomy) |
| 释义 |
| align = right | direction = vertical | width = 274 | image1 = Eucoleus aerophilus male spicule.jpg | alt1 = | caption1 = Spicule protruding from the spicular sheath at the posterior end of a male Eucoleus aerophilus | image2 = Parasite140131-fig2 Capillaria plectropomi Figure 2D Male caudal end with extruded spicule TEM.png | alt2 = | caption2 = Male caudal end of Capillaria plectropomi, with spinose spicular sheath and extruded spicule. Transmission electron microscopy. | image3 = Parasite140013-fig3 Pterygodermatites (Paucipectines) baiomydis Photo.tif | alt3 = | caption3 = Left spicule in a male Pterygodermatites baiomydis }} In nematodes (roundworms), spicules, or copulatory spicules, are needle-like mating structures found only in males.[1] Male nematodes 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.[2][3] The gubernaculum is another organ of the nematode male copulatory system, which guides the spicules during copulation. References1. ^{{cite book|last1=Cheng|first1=Thomas C.|title=General Parasitology|date=1986|publisher=Elsevier Science|location=Oxford|isbn=0-323-14010-6|page=479|edition=2nd|url=https://books.google.com/books?id=d4GQlYzode8C&pg=PA479&dq}} {{nematode-stub}}2. ^{{cite book|last1=Gaugler|first1=edited by Randy|last2=Bilgrami|first2=Anwar L.|title=Nematode Behaviour|date=2004|publisher=CABI|location=Wallingford|isbn=0-85199-955-7|pages=136–138|url=https://books.google.com/books?id=gr10r8veZ9gC&pg=PA136&dq=}} 3. ^Chitwood, B. G. & Chitwood, M. B. (1950). Introduction to Nematology (Vol. 1). Baltimore: Monumental Printing Co.{{DOI|10.5962/bhl.title.7355}} (Function of spicule: pages 123-124) 2 : Nematode anatomy|Animal male reproductive system |
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