Rhinoglena frontalis (Rotifera, Monogononta): a scanning electron microscopic study
Rhinoglena frontalis (Rotifera, Monogononta): a scanning electron microscopic study
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Rhinoglena frontalis（轮虫目、Monononta）：扫描电子显微镜研究
作者：
G. Melone
用扫描电镜观察了额吻裸藻（单角藻目，外显藻科）雌、雄个体的形态特征。两性在身体的大小和形状上不同。雌性身体呈纺锤形，脚短而圆锥形，而雄性身体更细长，脚相当长。两性的旋转器（或冠）相似，只有微小的差异，由排列在口周围的纤毛组成。冠由两个成对的裂片和第三个突出的背侧裂片组成，通常被称为长鼻。三个裂片的外部排列着密集的纤毛，构成了用于游泳的扣带。长鼻的中央表面覆盖着许多纵行的纤毛，向嘴弯曲。侧叶的中央表面有两个同心的弧形纤毛（由紧密排列的纤毛组成），向嘴弯曲。两性的旋转器的相似组织与这样一个事实有关，即在这个物种中，雄性能够进食，并具有发达的乳突和消化系统。两性的trophi都说明和比较。
Females and males of Rhinoglena frontalis (Monogononta, Epiphanidae) are observed by SEM and their external morphologies are compared. The two sexes differ in size and shape of the body. The female body is fusiform with a short, conical foot, while the male body is more slender and has a rather long foot. The rotatory apparatus (or corona) of both sexes is similar with only minor differences and consists of rows and tufts of cilia arranged around the mouth opening. The corona is made of two paired lobes lateral to the mouth and of a third prominent dorsal lobe, usually called proboscis. The three lobes are lined externally by dense rows of cilia, which constitute the cingulum, used for swimming. The central surface of the proboscis is covered with numerous longitudinal rows of cilia bent towards the mouth. The lateral lobes show, on their central surfaces, two concentric arcs of cirri (made of tightly packed cilia) bent towards the mouth. The similar organization of the rotatory apparatus of both sexes is related to the fact that the male, in this species, is able to feed and has a developed mastax and digestive system. The trophi of both sexes are illustrated and compared.