Ultrastructure of the Digestive Cells in the Midgut of the Predator Brontocoris tabidus (Heteroptera: Pentatomidae) After Different Feeding Periods on Prey and Plants
Ultrastructure of the Digestive Cells in the Midgut of the Predator Brontocoris tabidus (Heteroptera: Pentatomidae) After Different Feeding Periods on Prey and Plants
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DOI：
10.1603/008.102.0113
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发表时间：
2009-01-01
影响因子：
2.3
通讯作者：
Serrao, Jose Eduardo
中科院分区：
文献类型：
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作者：
Fialho, Maria Do Carmo Q.;Zanuncio, Jose C.;Serrao, Jose Eduardo
Brontocoris tabidus(Signret)是一种专性的动植物食性捕食性天敌，因为在实验室中，当捕食者和植物都取食石油时，它的种群可以保持不变。我们研究了不同处理(饥饿或取食植物和猎物)在不同时期对成虫中肠消化细胞超微结构的影响。解剖中肠，分为前段、中段和后段，进行光镜和透射电子显微镜分析。饥饿或以桉叶为食的烟粉蝶中肠前部不含糖原。取食植物性材料的烟粉虱在该区域表现为多囊泡体，取食6h后可见球形晶体。中肠中段微绒毛明显长于中肠前、后段。摄食后6h，中肠后段顶端线粒体、粗面内质网和双膜囊泡丰富，与其他两区不同。中肠前、中、后部消化细胞的超微结构特征表明，它们在消化酶的合成、离子和养分的吸收以及物质的储存和排泄中起作用。
Brontocoris tabidus (Signoret) (Heteroptera: Pentatomidae) is an obligate zoophytophagous predator because its population can be maintained in the laboratory when fed oil both prey and plants. We evaluated ultrastructural changes in the midgut digestive cells of adult B. tabidus, subjected to different treatments (starvation or feeding on plant material and prey) for different periods. Their midguts were dissected, divided into anterior, medium and posterior sections, processed, and analyzed with light and transmission electron microscopy. The anterior region of the midgut of B. tabidus, starved or fed on eucalyptus leaves, contained no glycogen. B. tabidus fed on plant material showed multivesicular bodies in this region, and spherocrystals after 6 It of feeding on prey. The microvilli of the medium midgut, were longer than those of the anterior and posterior midgut. The posterior midgut differed from the other two regions by an abundance of mitochondria, rough endoplasmatic reticulum and double membrane vesicles in the apical region, 6 h after feeding. The ultrastructural features of the digestive cells in the anterior, medium and posterior regions of the midgut suggest that they play a role in digestive enzyme synthesis, ion and nutrient absorption, and storage and excretion of substances.