Multiple recent introductions of apid bees into Pacific archipelagos signify potentially large consequences for both agriculture and indigenous ecosystems |
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Authors: | Scott V C Groom Hien T Ngo Sandra M Rehan Posa Skelton Mark I Stevens Michael P Schwarz |
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Institution: | 1. School of Biological Sciences, Flinders University of South Australia, GPO Box 2100, Adelaide, SA, 5001, Australia 2. Department of Biology, York University, 4700 Keele Street, Toronto, ON, M3J 1P3, Canada 3. Department of Biological Sciences, University of New Hampshire, 46 College Road, Durham, NH, 03824, USA 4. Secretariat of the Pacific Regional Environment Program, PO Box 240, Apia, Samoa 5. South Australian Museum, GPO Box 234, Adelaide, SA, 5000, Australia 6. School of Earth and Environmental Sciences, University of Adelaide, Adelaide, SA, 5005, Australia
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Abstract: | The islands of the south west Pacific (SWP) are highly biodiverse, yet records of their bee fauna suggest a region depauperate of a key pollinator suite. Studies of the bees of Fiji based on molecular data have revealed a recent origin with the majority of species having arrived since the last glacial maximum or introduced since human colonization. Here we use DNA barcodes to provide the first detailed account of Apidae bees from Vanuatu, Fiji, and Samoa. We show that most if not all species in these archipelagos have been recently introduced from Australia and south east Asia, with a further species introduced from the New World. Some of these species have become regionally abundant and we discuss the potential impact of introduced pollinators on endemic plant–pollinator associations. Given the wide-reaching role of native pollinators in island systems, yet lack of understanding of SWP pollinator suites, our study highlights the urgent need for more detailed pollinator research in the region. |
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