Dejean Alain, Azémar Frédéric, Petitclerc Frédéric, Delabie Jacques H C, Corbara Bruno, Leroy Céline, Céréghino Régis, Compin Arthur
UPS-ECOLAB, CNRS, Université de Toulouse, 118 route de Narbonne, 31062, Toulouse, France.
CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97310, Kourou, France.
Naturwissenschaften. 2018 Jun 27;105(7-8):43. doi: 10.1007/s00114-018-1570-0.
Because Tachia guianensis (Gentianaceae) is a "non-specialized myrmecophyte" associated with 37 ant species, we aimed to determine if its presence alters the ant guild associated with sympatric "specialized myrmecophytes" (i.e., plants sheltering a few ant species in hollow structures). The study was conducted in a hilly zone of a neotropical rainforest where two specialized myrmecophytes grow at the bottom of the slopes, another at mid-slope, and a fourth on the hilltops. Tachia guianensis, which occurred everywhere, had its own guild of associated ant species. A network analysis showed that its connections with the four other myrmecophytes were rare and weak, the whole resulting in a highly modular pattern of interactions with one module (i.e., subnetwork) per myrmecophyte. Three ant species parasitized three out of the four specialized myrmecophytes (low nestedness noted), but were not or barely associated with T. guianensis that therefore did not influence the parasitism of specialized myrmecophytes.
由于圭亚那塔基草（龙胆科）是一种与37种蚂蚁物种相关联的“非特化蚁栖植物”，我们旨在确定它的存在是否会改变与同域分布的“特化蚁栖植物”（即在中空结构中庇护少数几种蚂蚁物种的植物）相关联的蚂蚁群落。该研究在新热带雨林的一个丘陵地带进行，那里有两种特化蚁栖植物生长在斜坡底部，另一种生长在斜坡中部，还有一种生长在山顶。随处可见的圭亚那塔基草有其自身的相关蚂蚁物种群落。网络分析表明，它与其他四种蚁栖植物的联系稀少且微弱，整体形成了一种高度模块化的相互作用模式，每种蚁栖植物都有一个模块（即子网络）。三种蚂蚁物种寄生于四种特化蚁栖植物中的三种（嵌套度较低），但与圭亚那塔基草没有关联或关联极少，因此圭亚那塔基草不会影响特化蚁栖植物的寄生情况。
