Arab Alberto, Caetano Flávio Henrique
Departamento de Biologia, Instituto de Biociências, Universidade Estadual Paulista, Rio Claro, São Paulo, CEP 13506-900, Brazil.
Arthropod Struct Dev. 2002 Jun;30(4):281-92. doi: 10.1016/s1467-8039(01)00039-1.
The Malpighian tubules of workers of the fire ant Solenopsis saevissima (Myrmicinae) were analyzed by scanning and transmission electron microscopy in order to determine their functional organization and association with the hindgut epithelium. The ants showed six Malpighian tubules with three segments morphologically and structurally different. The proximal segment was long and its cells showed abundant smooth endoplasmic reticulum and lipid droplets, which suggest their role in lipid secretion. The mid segment was long and undulated and it was composed by the cells that showed the typical features of ion transporting epithelia. The distal segment, short and flattened, adheres to the rectum wall. The cells of this segment showed the basal lamina fused to that of the rectum, it is probable that this part of the tubule may play a role in ion and water uptake from the feces.
为了确定火红蚁(Solenopsis saevissima,蚁亚科)工蚁的马尔皮基氏小管的功能组织及其与后肠上皮的关联,采用扫描电子显微镜和透射电子显微镜对其进行了分析。这些蚂蚁有六条马尔皮基氏小管,分为三个在形态和结构上不同的节段。近端节段较长,其细胞含有丰富的光滑内质网和脂滴,这表明它们在脂质分泌中发挥作用。中间节段长且呈波浪状,由具有离子转运上皮典型特征的细胞组成。远端节段短而扁平,附着于直肠壁。该节段的细胞显示基膜与直肠的基膜融合,很可能该小管的这一部分在从粪便中吸收离子和水分方面发挥作用。