Ultrastructure of the spermatozoon of Anomotaenia quelea (Mettrick, 1961) (Cestoda, Cyclophyllidea, Dilepididae), an intestinal parasite of Quelea quelea (Ayes, Ploceidae) in Senegal

作者：Ba Aissatou; Ndiaye Papa Ibnou^*; Ba Cheikh Tidiane; Miguel Jordi

来源：Zoologischer Anzeiger, 2014, 253(2): 119-125.

DOI：10.1016/j.jcz.2013.08.006

• Sperm morphology
• TEM
• Dilepididae
• Apical cone
• Periaxonemal sheath

The mature spermatozoon of Anomotaenia quelea exhibits an apical cone of electron-dense material and two helicoidal crest-like bodies. The apical cone near its base is surrounded by a lucent cytoplasm and a spiraled layer of cortical microtubules. The crest-like bodies are of different lengths, spiraled and make an angle of 30-40 to the hypothetical spermatozoon axis. The axoneme is of the 9 + '1' trepaxonematan pattern and is surrounded by a periaxonemal sheath of electron-dense material. The cytoplasm contains in regions III and IV numerous electron-dense granules situated between the periaxonemal sheath and the cortical microtubules. The posterior extremity of the spermatozoon of A. quelea exhibits a nucleus and a disorganized axoneme and cortical microtubules. This type of posterior extremity of the mature spermatozoon has never been described previously in a Dilepididae. Similarly, two crest-like bodies have not been observed before in a dilepidid cestode.

• 出版日期2014