Meurice J C, Goffinet G
Cell Tissue Res. 1983;234(2):351-63. doi: 10.1007/BF00213773.
The neck organ of adult and immature forms of four marine gymnomeran Cladocera species (Podonidae) has been characterized morphologically by light-scanning- and electron microscopy. Although displaying some special features, a comparison with organs assuming a comparable regulating function in other organisms indicates that the neck organ of the adult Podonidae exhibits ultrastructural evidence of involvement in ion-transporting mechanisms. The extensive ventral plasma membrane infoldings closely connected with the chondriom and the peculiar organization of the cuticular site associated with the subjacent apical cell limits of the organ are among the chief structural specializations. The fact that similar structures are already present in the embryonic neck organ confirms previous indirect evidence that podonid embryos can hypo-osmoregulate as soon as the ion concentration of the brood chamber rises to that of the outside medium.
通过光学扫描显微镜和电子显微镜对四种海洋裸腹溞枝角类动物（歪水蚤科）成虫和未成熟形态的颈部器官进行了形态学特征描述。尽管呈现出一些特殊特征，但与其他生物中具有类似调节功能的器官相比，表明成年歪水蚤科动物的颈部器官在超微结构上显示出参与离子转运机制的证据。与线粒体紧密相连的广泛腹侧质膜内褶以及与该器官下方顶端细胞界限相关的表皮部位的特殊组织是主要的结构特化之一。胚胎颈部器官中已经存在类似结构这一事实证实了先前的间接证据，即一旦育幼室中的离子浓度上升到外部介质的离子浓度，歪水蚤胚胎就可以进行低渗调节。
