ASSOCIATIVE LEARNING AND LOCUST FEEDING - EVIDENCE FOR A LEARNED HUNGER FOR PROTEIN
ASSOCIATIVE LEARNING AND LOCUST FEEDING - EVIDENCE FOR A LEARNED HUNGER FOR PROTEIN
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DOI：
10.1016/s0003-3472(05)80531-7
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发表时间：
1990-09-01
期刊：
影响因子：
2.5
通讯作者：
WHITE, PR
中科院分区：
文献类型：
--
作者：
SIMPSON, SJ;WHITE, PR
实验表明，首先，蝗虫（Locusta migratoria (L.)）能够将某种气味与饮食以及该饮食中的蛋白质含量联系起来；其次，对气味的行为反应具体取决于昆虫的蛋白质缺乏状态。若虫接受为期 2 天的训练，可自由获取两种人造食物，这两种食物在各方面都很相似，只是一种缺乏可消化的碳水化合物（P 饮食），另一种缺乏蛋白质（C 饮食），并且每种食物都搭配两种独特的次生植物气味之一。然后用不存在任何气味的 P 饮食或 C 饮食喂养蝗虫 4 小时，此后昆虫分别缺乏可消化的碳水化合物或蛋白质。然后在存在两种气味的测试室中观察若虫。那些缺乏蛋白质的昆虫对两种气味的反应非常不同，与之前与 C 饮食搭配的昆虫相比，它们更频繁地接近之前与 P 饮食搭配的气味来源。另一方面，缺乏可消化碳水化合物的蝗虫并没有表现出对两种气味的任何区分。进一步的实验表明，这两种气味对幼稚的蝗虫来说都是排斥的，并且缺乏蛋白质的若虫表现出的强烈倾向接近先前与P饮食配对的气味是由于该气味的排斥性降低，加上先前与C饮食配对的气味的排斥性保持不变。
Experiments are described that show, first, that locusts, Locusta migratoria (L.), are able to associate an odour paired with a diet and the protein content of that diet and, second, that the behavioural response shown to the odour depends specifically on the insects'' state of protein deprivation. Nymphs were trained for 2 days with free access to two artificial foods that were similar in all respects except that one lacked digestible carbohydrate (the P diet) and the other lacked protein (the C diet) and each was paired with one of two distinctive secondary plant odours. The locusts were then fed for 4 h on either the P diet or the C diet with neither odour present, after which time the insects were deficient in digestible carbohydrate or protein, respectively. The nymphs were then observed in a test chamber with the two odours present. Those insects deprived of protein responded very differently to the two odours, approaching the source of the odour previously paired with the P diet significantly more often than that previously paired with the C diet. Locusts deprived of digestible carbohydrate, on the other hand, did not show any discrimination between the two odours. Further experiments showed that both odours were repellent to naive locusts and that the strong tendency, shown by protein-deprived nymphs, to approach the odour previously paired with the P diet was due to reduction in the repellency of that odour, combined with maintained repellency of the odour previously paired with the C diet.