Super-generalism is a pollinator trait where species obtain floral resources from a very wide range of plant species. Theoretical and empirical studies suggest that on islands with low pollinator diversity, such pollinators should evolve to exploit a very wide range of floral morphologies. Super-generalism has implications not only for securing pollination network stability, but also for the invasibility of potential weeds that require specialist pollinators in their original ranges. Here we expand earlier studies on bees in Fiji to include a wider range of bee-plant interactions for bees that have been recently introduced into Fiji as well as the endemic Fijian halictine bee, Homalictus fijiensis. Our data show that the endemic Fijian bee has a much wider range of floral hosts than introduced bees, and this extends to pollen larceny of solanoid plant species that are usually buzz pollinated. Importantly, solanoid plants were not visited by introduced bee species, including the honeybee Apis mellifera, which is usually regarded as a super-generalist. Our findings are important because they add critical support to the hypothesis that super-generalism evolves in insular ecosystems with low pollinator diversity and that this may make such ecosystems vulnerable to invasion by exotic weeds. However, insular super-generalists may also have potential to stabilize plant-pollinator networks and may also be effective pollinators for exotic crop species, and this needs to be further explored in agricultural settings.

超级通配论是传粉媒介的一种特征，物种从各种各样的植物物种中获得花卉资源。理论和经验研究表明，在传粉媒介多样性较低的岛屿上，此类传粉媒介应进化为利用非常广泛的花卉形态。超级种姓制度不仅对确保授粉网络的稳定性有影响，而且对潜在杂草的入侵也有影响，这些杂草需要在其原始范围内需要专门授粉媒介。在这里，我们扩大了对斐济蜜蜂的早期研究，以包括最近被引入斐济的蜜蜂和特有的斐济金丝猴Homalictus fijiensis的更广泛的蜜蜂-植物相互作用。。我们的数据表明，特有的斐济蜂比引入的蜜蜂具有更广泛的花寄主范围，这扩展到通常被嗡嗡声授粉的类茄植物的花粉盗窃。重要的是，引进的蜜蜂物种（包括蜜蜂Apis mellifera）没有拜访过茄类植物，通常被视为超级绅士。我们的发现很重要，因为它们为以下观点提供了重要的支持：超级遗传论在传粉媒介多样性低的岛状生态系统中进化，这可能使此类生态系统容易受到外来杂草的入侵。但是，岛上的超级种姓者也可能具有稳定植物授粉媒介网络的潜力，并且也可能是外来作物物种的有效传粉媒介，这需要在农业环境中进一步探索。