Lenoir Alain, Devers Séverine, Touchard Axel, Dejean Alain
IRBI, Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS 7261, Université François Rabelais, 37200, Tours, France.
CNRS, Écologie des Forêts de Guyane (UMR CNRS 8172), Campus agronomique, BP 316, 97379, Kourou cedex, France.
Insect Sci. 2016 Oct;23(5):739-45. doi: 10.1111/1744-7917.12232. Epub 2015 Jul 2.
In this study, conducted in French Guiana, a part of the native range of the fire ant Solenopsis saevissima, we compared the cuticular hydrocarbon profiles of media workers with previous results based on intraspecific aggressiveness tests. We noted a strong congruence between the two studies permitting us to delimit 2 supercolonies extending over large distances (up to 54 km), a phenomenon known as unicoloniality. Solenopsis geminata workers, taken as an out-group for cluster analyses, have a very different cuticular hydrocarbon profile. Because S. saevissima has been reported outside its native range, our conclusion is that this species has the potential to become invasive because unicoloniality (i.e., the main attribute for ants to become invasive) was shown at least for the Guianese population.
在法属圭亚那进行的这项研究中，法属圭亚那是火蚁红火蚁自然分布范围的一部分，我们将中等体型工蚁的表皮碳氢化合物谱与基于种内攻击性测试的先前结果进行了比较。我们注意到两项研究之间有很强的一致性，这使我们能够划定延伸至很远距离（达54公里）的2个超级蚁群，这一现象被称为单蚁群现象。作为聚类分析外群的热带火蚁工蚁，具有非常不同的表皮碳氢化合物谱。由于红火蚁已在其原生范围之外被发现，我们的结论是，该物种有可能成为入侵物种，因为至少在圭亚那种群中显示出了单蚁群现象（即蚂蚁成为入侵物种的主要属性）。
