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首页> 外文期刊>Animal biology >Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)
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Ultrastructural analysis of the fat body in workers of Attini ants (Hymenoptera: Formicidae)

机译：Attini蚂蚁工人的脂肪体的超微结构分析（膜翅目：蚁科）

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摘要

In the present study a comparative morphological analysis of the fat body cells of ant workers of the basal Attini species Cyphomyrmex rimosus and Mycetarotesparallelus, and the derived species Acromynnex disciger and Atta laevigata was conducted. The results revealed that the fat body is located mainly in the abdomen around organs (perivisceral) and near the integument (parietal). The main cells observed are spherical or polygonal trophocytes with a slightly rough surface. The oenocytes, another cell type found, are closely associated with trophocytes, and present a spherical or polygonal shape and a smoother surface. The morphometric analysis showed that the area of trophocytes and oenocytes of C rimosus and M parallelus is significantly smaller when compared to those of A. disciger and A. laevigata. In the cytoplasm of parietal and perivisceral trophocytes and oenocytes, electronlucent droplets (probably lipids) and electrondense granules (probably proteins) indicate the participation of these cells in the storage of these elements, while digestive vacuoles, residual bodies, and multivesicular bodies suggest a role in intracellular digestion. In perivisceral trophocytes and oenocytes of C rimosus, the presence of mitochondria, lamellar rough endoplasmic reticulum, and Golgi complex suggests that these cells synthesize proteins. Based on these data, no significant differences were observed between the fat body cells of basal and derived ants, except regarding the larger size of trophocytes and oenocytes of the derived species A. disciger and A. laevigata.
机译：在本研究中，对基础Attini物种Cyphomyrmex rimosus和Mycetarotesparallelus以及衍生物种Acromynnex disciger和Atta laevigata的蚂蚁工人的脂肪体细胞进行了形态比较分析。结果表明，脂肪体主要位于器官周围的腹部（内脏）和外皮（顶骨）附近。观察到的主要细胞是球形或多边形滋养细胞，表面略微粗糙。卵母细胞是发现的另一种细胞类型，与滋养细胞紧密相关，呈球形或多边形形状，表面光滑。形态分析表明，与A. disciger和A. laevigata相比，C rimosus和Mparallelus的营养细胞和卵母细胞的面积明显较小。在顶壁和内脏的滋养细胞和卵母细胞的细胞质中，电子透明液滴（可能是脂质）和电子致密颗粒（可能是蛋白质）表明这些细胞参与了这些元素的储存，而消化液，液泡，残留体和多囊泡体则发挥了作用在细胞内消化中。在C rimosus的内脏周围营养细胞和卵母细胞中，线粒体，层状粗面内质网和高尔基体的存在表明这些细胞合成蛋白质。根据这些数据，除了衍生物种A. disciger和A. laevigata的滋养细胞和毛细胞较大，基本蚂蚁的脂肪体细胞与衍生蚂蚁的脂肪体细胞之间均未观察到显着差异。

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