NUTRITIONAL STUDIES ON THE CONFUSED FLOUR BEETLE, TRIBOLIUM CONFUSUM DUVAL.
NUTRITIONAL STUDIES ON THE CONFUSED FLOUR BEETLE, TRIBOLIUM CONFUSUM DUVAL.
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DOI：
10.1085/jgp.6.5.565
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发表时间：
1924-05-20
期刊：
影响因子：
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通讯作者：
Chapman RN
中科院分区：
文献类型：
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作者：
Chapman RN
之所以选择困惑的面粉甲虫(Tribolium Conpuusum)进行这项研究，是因为它生活在一种通常不含活生物体的食物中。每天处理的培养物的死亡率高于不处理的培养物，但当所有处理方法相同时，结果是可比的。用不同面粉中的甲虫个体试验的结果在纵坐标上标有幼虫的龄期(幼虫阶段)，在横坐标上画出以天为单位的时间，用小麦面粉上的对照试验结果根据“x=y”公式来确定各龄期的长度。除末龄外，其余各龄期的发育曲线均为直线。在某些食物中，幼虫转化的最后一龄的曲线偏离直线，特别是米粉。当使用大规模培养时，绘制了每种合成食物的死亡和转化曲线。对小麦面粉和合成食品的曲线比较表明，所有情况下曲线的第一部分都非常相似，除了转化曲线被后移了相当长的一段时间外，少数几个在各个方面都与对照组相似。大众养殖的死亡曲线并不平坦，但在大约蜕皮的时候死亡突然增加。因此，可以将这些曲线与单个甲虫的记录进行比较。
The confused flour beetle (Tribolium confusum) was chosen for this study because it lives in a food which ordinarily contains no living organisms. The death rates are greater in cultures which are handled daily than in those which are not handled but when all are handled alike the results are comparable. The results from experiments with individual beetles in various kinds of flour were plotted with instars (larval stages) on the ordinate and time in days on the abscissa, using the results from control experiments in wheat flour to determine the length of the various instars from an "x = y" formula. The curves of development were found to be straight lines throughout all but the last instar. The curve for the last instar during which the larva transformed deviated from the straight line in certain foods, notably rice flour. When mass cultures were used the death and transformation curves were plotted for each synthetic food. A comparison of the curves from wheat flour and the synthetic foods shows that the first parts of the curves are very much alike in all cases and that a few resemble the control in every respect except that the transformation curve has been moved back for a considerable time. The death curves for the mass cultures are not smooth but show sudden increase in death at approximately the times of molting. These curves may therefore be compared with the records from individual beetles.