Based on microsatellite markers and non-lethal sampling of orchid bee males, we assessed the genetic diversity and population structure of three species, Euglossa pleosticta, Euglossa imperialis, and Eulaema nigrita, collected from forest remnants in the Brazilian savanna biome. Among these species, El. nigrita has being acknowledged as more tolerant to savanic areas, since it is more frequently found in these habitats than the other two species. Thus, we hypothesized that species more associated with forest areas would show lower levels of genetic diversity and higher levels of population structure, since open areas could represent a barrier to the movement of these species. We observed lower levels of genetic diversity (H_E) in the species highly associated with forest areas (Eg. pleosticta, H_E = 0.66; Eg. imperialis, H_E = 0.44) compared to El. nigrita (H_E = 0.81). Concerning the genetic structure, it was only remarkable among samples of Eg. pleosticta, a species strongly associated with the forest remnants. Despite the documented dispersal capacity of euglossine bees, maintenance of the connections among forest areas in this biome seems to be critical for their conservation in the Brazilian savanna.

基于微卫星标记和兰花蜂雄性的非致死采样，我们评估了从巴西热带稀树草原生物群落的森林残留物中采集的三种物种（Euglossa pleosticta，Euglossa imperialis和Eulaema nigrita）的遗传多样性和种群结构。在这些物种中，El。尼格里塔已被确认为更多的宽容savanic领域，因为它在这些栖息地比其他两个品种更经常发现。因此，我们假设与森林地区联系更紧密的物种将表现出较低的遗传多样性水平和较高的种群结构，因为开放区域可能成为这些物种迁移的障碍。我们观察到较低的遗传多样性水平（与El高度相关的物种（例如pleosticta，H _E = 0.66；Eg。imperialis ，H _E = 0.44）的物种中的H _E）。黑grita（H _E = 0.81）。关于遗传结构，仅在Eg样品中才是显着的。pleosticta，一种与森林残留物密切相关的物种。尽管有记载的尤格拉西斯蜂具有分散能力，但是在该生物群落中维持森林区域之间的联系对于在巴西大草原中保护它们似乎至关重要。