Ultrastructures of spermatozoon tail in rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera, Curculionidae)

Publication Type:Journal Article
Authors:Y. He, Ji, X. -hua, Jiang, M. - X., Cheng, J. - A.
Journal:Zhejiang Daxue Xuebao Nongye Yu Shengming Kexue Ban
Date Published:Jul
Type of Article:Article
:Lissorhoptrus oryzophilus

Ultrastructures of spermatozoon tail in the rice water weevil, Lissorhoptrus oryzophilus, were observed via transmission electron microscopy at selected sperm developmental stages with the aim at clarifying spermiogenesis in this weevil. The flagellum interior is composed of two mitochondrial derivatives, two accessory bodies, one centriole adjunct and one microtubule system (axoneme). The axoneme consists of nine accessory microtubules, nine peripheral doublets of microtubules and two central microtubules, displaying a typical 9 + 9 + 2 pattern. The two mitochondrial derivatives have different shapes and contents during the spermiogenesis. The centriole adjunct occurs late, and the microtubules surrounding mitochondrial derivatives, accessory bodies and centriole adjunct disappear in late spermiogenesis stages. In conclusion, L. oryzophilus has a similar spermiogenesis with several other coleopterans reported, meanwhile it possesses some specificity in terms of the occurrence of mitochondrial derivatives, centriole adjunct and microtubules.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith