蚂蚁(Lasius niger)在靠近食物源和远离巢穴的地方沉积更多的信息素,但并不试图更新错误的信息素轨迹

IF 1.4 3区 农林科学 Q2 ENTOMOLOGY
Tomer J. Czaczkes, Federico-Javier Olivera-Rodriguez, Laure-Anne Poissonnier
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引用次数: 0

摘要

许多社会性昆虫都使用信息素径来招募工蚁。然而,信息素径有一些局限性。两个主要的局限性是:它们会随着时间的推移而蒸发,这意味着更远的地方可能更难精确地招募到工蚁;如果铺设错误或铺设过时,它们就无法被清除。在这里,我们要问的是黑蚁王能否适应性地调节信息素的沉积以克服这些限制。具体来说,我们首先要问的是,如果蚂蚁跟随信息素追踪到了一个错误的(没有奖励的)地点,它们是否会上调信息素在正确食物地点的沉积量,以与错误的追踪进行竞争。它们不会这样做。然后,我们研究了食物距离和接近食物的程度对信息素沉积的影响。我们发现,与即将到达巢穴时相比,蚂蚁在食物源 10 厘米范围内沉积的信息素要多 22 倍。此外,蚂蚁在离巢穴 100 厘米远的食物源旁边沉积的信息素是在离巢穴 20 厘米远的食物源旁边沉积的信息素的四倍。因此,在我们的实验中,黑线蚁并没有显示出一种通过加强正确的选择来克服过时的或错误的铺设路径的机制,但却强烈地提高了对更远的食物源的招募,因为这些食物源更难定位和招募。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ants (Lasius niger) deposit more pheromone close to food sources and further from the nest but do not attempt to update erroneous pheromone trails

Ants (Lasius niger) deposit more pheromone close to food sources and further from the nest but do not attempt to update erroneous pheromone trails

Many social insects use pheromone trails to recruit workers to resources. Pheromone trails have some limitations, however. Two major limitations are that they evaporate over time, meaning that more distant locations may be more difficult to recruit precisely to, and that they cannot be removed if laid erroneously, or if they become outdated. Here, we ask whether Lasius niger ants can adaptively modulate pheromone deposition to overcome these limitations. Specifically, we first ask whether ants which have followed a pheromone trail to a wrong (unrewarded) location upregulate pheromone deposition to the correct food location to compete with the erroneous trail. They do not. Then, we examine how food distance and proximity to food influence pheromone deposition. We find that ants deposit up to 22 times more pheromone within 10 cm of a food source compared to when they are about to reach the nest. Moreover, they deposit up to four times more pheromone next to a food source placed 100 cm away from the nest as compared to one placed 20 cm away from the nest. Lasius niger ants thus do not display a mechanism for overcoming outdated or erroneously-laid trails by strengthening correct alternatives in our experiment, but do strongly upregulate recruitment to more distant food sources, which are more difficult to locate and recruit to.

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来源期刊
Insectes Sociaux
Insectes Sociaux 生物-昆虫学
CiteScore
2.70
自引率
7.70%
发文量
43
审稿时长
6-12 weeks
期刊介绍: Insectes Sociaux (IS) is the journal of the International Union for the Study of Social Insects (IUSSI). It covers the various aspects of the biology and evolution of social insects and other presocial arthropods; these include ecology, ethology, morphology, population genetics, reproduction, communication, sociobiology, caste differentiation and social parasitism. The journal publishes original research papers and reviews, as well as short communications. An international editorial board of eminent specialists attests to the high quality of Insectes Sociaux, a forum for all scientists and readers interested in the study of social insects.
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