Dias Glenda, Lino-Neto José, Dallai Romano
Laboratório de Biologia Estrutural, Departamento de Biologia Geral, UFV, 36570-900 Viçosa, Minas Gerais, Brazil; Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy.
Laboratório de Biologia Estrutural, Departamento de Biologia Geral, UFV, 36570-900 Viçosa, Minas Gerais, Brazil.
Tissue Cell. 2015 Feb;47(1):73-7. doi: 10.1016/j.tice.2014.11.007. Epub 2014 Dec 8.
The spermatozoa of the longhorn beetles Stictoleptura cordigera were ultrastructurally described in this paper. They have an apical bilayered acrosome, an elongated nucleus, a centriole with star-shape links, two asymmetric mitochondrial derivatives partially crystallized and a 9+9+2 flagellar axoneme with accessory tubules provided with 16 protofilaments in their wall. A centriole adjunct is present and gives rise to two thick laminae as accessory bodies, also asymmetrical, to which two relatively small puff-like structures of different size are connected. These features were previously found in the sperm of the cerambycid Morimus asper. The strict similarity of the cerambycid sperm characters with those of curculionoids indicates a clear phylogenetic relationship between Chrysomeloidea and Curculionoidea.
本文对长角甲虫Stictoleptura cordigera的精子进行了超微结构描述。它们具有顶端双层顶体、细长的细胞核、带有星形连接的中心粒、两个部分结晶的不对称线粒体衍生物以及一个9+9+2鞭毛轴丝，其附属小管壁上有16根原丝。存在一个中心粒附属物，并产生两个作为附属体的厚片层，同样不对称，连接着两个大小不同的相对较小的泡芙状结构。这些特征先前在天牛Morimus asper的精子中被发现。天牛精子特征与象鼻虫精子特征的严格相似性表明叶甲总科和象甲总科之间存在明确的系统发育关系。
