Kelber A
Department of Cell and Organism Biology, Vision Group, Lund University, Helgonavägen 3, 22362 Lund, Sweden.
J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2003 Sep;189(9):661-6. doi: 10.1007/s00359-003-0440-0. Epub 2003 Aug 9.
Hummingbird hawkmoths were tested for their preferences for different types of sugar. In triple choice tests, moths sucked for longer periods from sucrose than from fructose and glucose. Naive moths released in a large flight cage and monitored over 24 days, drank on average 137 mul sucrose, 67 mul fructose and 7 mul glucose daily. In an independent test, moths spent more time feeding from sucrose than from fructose and more time feeding from fructose than from glucose. Animals in hibernation made less but longer feeding bouts, whereas animals that fed every day and newly eclosed animals were more likely to make more but shorter visits to feeders. The hawkmoths learned to associate colour with the preferred sugar. In a dual choice test, flower-naive moths chose blue rather than yellow artificial flowers. After the initial test, these animals received sucrose from the yellow and glucose from the blue feeders. A week later they chose yellow more frequently than blue indicating that they had learned to associate a colour with the preferred type of sugar.
对蜂鸟鹰蛾进行了对不同类型糖分偏好的测试。在三选一测试中，蛾类从蔗糖中吸食的时间比从果糖和葡萄糖中吸食的时间更长。将未接触过的蛾类放入一个大型飞行笼中，并在24天内进行监测，它们平均每天饮用137微升蔗糖、67微升果糖和7微升葡萄糖。在一项独立测试中，蛾类从蔗糖中取食的时间比从果糖中取食的时间长，从果糖中取食的时间比从葡萄糖中取食的时间长。处于冬眠状态的动物取食次数较少但每次取食时间较长，而每天取食的动物和新羽化的动物更有可能对喂食器进行更多次但时间较短的访问。蜂鸟鹰蛾学会了将颜色与偏好的糖分联系起来。在双选测试中，未接触过花朵的蛾类选择蓝色而非黄色的人造花。在初始测试后，这些动物从黄色喂食器中获取蔗糖，从蓝色喂食器中获取葡萄糖。一周后，它们比蓝色更频繁地选择黄色，这表明它们已经学会将一种颜色与偏好的糖类型联系起来。
