Kümmel Georg, Dobner Christa
Zoologisches Institut I, Universität Karlsruhe, D-7500 Karlsruhe, Federal Republic of Germany.
J Morphol. 1986 Sep;189(3):295-311. doi: 10.1002/jmor.1051890308.
The ultrastructure of spermatophores was studied in seven species of Oribatei. Each spermatophore is composed of a head and a stalk which is attached to the substratum. The spherical head consists of two distinct portions: (1) the sperm package; and (2) the head matrix. Position and structure of the sperm package are described in the different species, as well as the various structures in the head matrix. The sperm package contains sperm embedded in secretory products. The most characteristic feature of the sperm is an electron-dense chromatin body. Mitochondria lie adjacent to it or are partly or completely incorporated into the chromatin body. The cytoplasmic surface of the plasma membrane regularly bears an electron-dense layer; the plasma membrane is covered by a secretory sheath. The spermatophores of the Oribatei are structurally complicated and not uniform. The possible role of the spermatophore's structural elements is discussed and an attempt is made to evaluate characteristic features taxonomically.
对七种甲螨的精包超微结构进行了研究。每个精包由一个头部和一个附着在基质上的柄部组成。球形头部由两个不同部分组成：（1）精子包；（2）头部基质。描述了不同物种中精子包的位置和结构，以及头部基质中的各种结构。精子包包含嵌入分泌产物中的精子。精子最显著的特征是一个电子致密的染色质体。线粒体位于其附近，或部分或完全并入染色质体。质膜的细胞质表面通常有一层电子致密层；质膜被一层分泌鞘覆盖。甲螨的精包结构复杂且不统一。讨论了精包结构成分的可能作用，并尝试从分类学角度评估其特征。
