Cortéz M G, Gonçalves T C
Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Departamento de Entomologia, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
Mem Inst Oswaldo Cruz. 1998 Jul-Aug;93(4):549-54. doi: 10.1590/s0074-02761998000400024.
The present work aims at learning the period of resistance to starvation (molting/death) of Triatoma rubrofasciata in different stages of development and the respective loss of weight until death. Eggs of specimens from the greater area of the city of São Luis in the State of Maranhão, Brazil, yielded approximately 300 nymphs. These nymphs were placed in labelled Borrel glasses, in which they were weekly fed on rats (Rattus norvegicus), until reaching the stage to be observed. The experiments were conducted in a climatic chamber regulated at 29 +/- 1 degrees C, 70% relative humidity and 12 hr photoperiod. The resistance to starvation increased according to the stage of development, except for adult bugs, whose results were similar to the 3rd stage nymphs. In all these development stages there was an abrupt loss of weight in the first week, followed by a gradual loss until death. Comparing this work with those of other authors, it was observed that T. rubrofasciata is among the less resistant triatomine species.
本研究旨在了解红带锥蝽在不同发育阶段对饥饿（蜕皮/死亡）的耐受期以及直至死亡时各自的体重损失情况。从巴西马拉尼昂州圣路易斯市大部分地区采集的标本所产的卵，孵化出了约300只若虫。这些若虫被放置在贴有标签的玻勒尔玻璃容器中，每周用大鼠（褐家鼠）喂养，直至达到待观察阶段。实验在温度控制为29±1摄氏度、相对湿度70%、光周期为12小时的气候箱中进行。除成虫外，对饥饿的耐受性随发育阶段的推进而增强，成虫的结果与第三阶段若虫相似。在所有这些发育阶段，第一周体重均急剧下降，随后逐渐下降直至死亡。将本研究与其他作者的研究进行比较后发现，红带锥蝽属于耐受性较弱的锥蝽物种。
