SUCROSE-STIMULATED SEARCHING BEHAVIOR OF DROSOPHILA-MELANOGASTER IN A UNIFORM HABITAT - MODULATION BY PERIOD OF DEPRIVATION
SUCROSE-STIMULATED SEARCHING BEHAVIOR OF DROSOPHILA-MELANOGASTER IN A UNIFORM HABITAT - MODULATION BY PERIOD OF DEPRIVATION
复制标题
DOI：
10.1016/s0003-3472(85)80068-3
复制
发表时间：
1985-01-01
期刊：
影响因子：
2.5
通讯作者：
TOBIN, TR
中科院分区：
文献类型：
--
作者：
BELL, WJ;TORTORICI, C;TOBIN, TR
分析了以蔗糖喂养的、适应性强的黑腹果蝇的局部搜索行为，以量化饥饿对搜索参数的影响，并确定局部搜索行为的遗传剖析是否可行。观察到三种不同的“搜索状态”：喂食前的喂食前测距、喂食后立即的局部搜索以及局部搜索终止后的喂食后测距。第一状态和第三状态之间的差异表明黑腹果蝇的搜索行为不是测距搜索和本地搜索之间的简单交替。未喂食的黑腹果蝇并不是测距和局部搜索之间的简单交替。未进食的雌性黑腹果蝇在水平面上相对笔直地行走，这一搜索阶段被称为进食前测距。随着饥饿时间从 0 小时增加到 48 小时，运动速率下降。实际移动所花费的时间在饥饿 3-12 小时时增加到最大值，然后减少。饱足的苍蝇和饥饿的苍蝇在 48 小时内几乎没有活动。苍蝇吃了一滴蔗糖后，其局部搜索的特点是运动速率降低和转弯速率增加。然后这些值衰减到喂食后渐近线。饥饿时间超过 24 小时的果蝇在运动值方面表现出略有不同的变化模式。局部搜索的持续时间随着饥饿时间的增加而增加。 “彻底性”值是路径长度和最小外接圆的组合，表明存在周期性的搜索，并且区域限制搜索的幅度随着时间的推移而下降。测距和搜索所花费的相对时间以及这些活动期间的运动速率是根据饥饿期和食物摄入之间的平衡所产生的不同能量储备来讨论的。
The local searching behavior of sucrose-fed, apterous D. melanogaster was analyzed to quantify the effects of starvation on search parameters and to determine is a genetic dissection of local searching behavior was feasible. Three distinct ''searching state'' were observed: pre-feeding ranging prior to feeding, local seraching immediately following feeding, and post-feeding ranging after local searching was terminated. Differences between the 1st and 3rd states indicate that the searching behavior of D. melanogaster is not a simple alternation between ranging and local searching. Unfed D. melanogaster is not a simple alternation between ranging and local searching. Unfed D. melanogaster females walk relatively straight in the horizontal plane, a phase of searching referred to as pre-feeding ranging. Locomotory rate declines as the period of starvation increases from 0 to 48 h. Time actually spent moving increases to a maximum at 3-12 h of starvation and then declines. Satiated flies and flies starved for 48 h move very little. After a fly feeds on a drop of sucrose, its local searching is characterized by a decrease in locomotory rate and an increase in turning rate. These values then decay to post-feeding asymptotes. Flies starved longer than 24 h exhibit a somewhat different pattern of changes in the motor values. The duration of local searching increases with the period of starvation. ''Thoroughness'' values, a combination of path length and minimum circumscriptive circle, demonstrated that there were periodic bouts of searching, and a decline over time in the amplitude of area-restricted searching. The relative time spent ranging and searching and the rate of movement during these activities are discussed in terms of differing energy reserves resulting from a balance between the period of starvation and food intake.