GaOrdóñez D, Pardos F, Benito J
Departamento de Biología Animal I, Facultad de Biología, Universidad Complutense, Madrid, Spain.
J Morphol. 2000 Dec;246(3):161-78. doi: 10.1002/1097-4687(200012)246:3<161::AID-JMOR1>3.0.CO;2-R.
The body wall of two species of kinorhynchs, Echinoderes cantabricus and E. hispanicus, was examined with transmission and scanning electron microscopy, to determine accurately the nature, arrangement, and consistency of characters used for taxonomic purposes. Structural details of cuticular hairs, pectinate fringes, spines, tubules, and different cuticular scars are described and discussed. Two kinds of epidermal glands, types 1 and 2, are characterized according to the nature of their secretory products, their exact location and distribution in the trunk segments, and their possible value as taxonomic characters. The generally assumed function of tubules for the release of secretory product is analyzed and finally rejected in light of the different distribution of tubules and glands along the trunk and because of the absence of a clear anatomic relation between both structures. The cuticular features studied can be useful for taxonomic purposes because of their consistency, but some of them are difficult to access and evaluate and therefore must be used with caution.
利用透射电子显微镜和扫描电子显微镜对两种动吻动物——坎塔布连棘头虫（Echinoderes cantabricus）和西班牙棘头虫（E. hispanicus）的体壁进行了检查，以准确确定用于分类目的的特征的性质、排列和一致性。描述并讨论了表皮毛、栉状缘、刺、小管和不同表皮疤痕的结构细节。根据两种表皮腺（1型和2型）分泌产物的性质、它们在躯干节段中的准确位置和分布以及它们作为分类特征的可能价值，对其进行了特征描述。分析了关于小管用于释放分泌产物的一般假设功能，最终鉴于小管和腺体沿躯干的不同分布以及两者结构之间缺乏明确的解剖关系而予以否定。所研究的表皮特征因其一致性而可用于分类目的，但其中一些特征难以获取和评估，因此必须谨慎使用。
