Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/3300
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Forage use and niche partitioning by non-native bumblebees in New Zealand: Implications for the conservation of their populations of origin
Authors: Lye, Gillian
Kaden, J C
Park, Kirsty
Goulson, Dave
Contact Email: k.j.park@stir.ac.uk
Keywords: Bombus
species introduction
invasive weeds
Hymenoptera
competition
Issue Date: Dec-2010
Publisher: Springer Verlag
Citation: Lye G, Kaden JC, Park K & Goulson D (2010) Forage use and niche partitioning by non-native bumblebees in New Zealand: Implications for the conservation of their populations of origin, Journal of Insect Conservation, 14 (6), pp. 607-615.
Abstract: Bumblebees were introduced into New Zealand from the UK approximately 120 years ago and four species became established. Two of these, Bombus terrestris and B. hortorum, are common in Europe whilst two, B. ruderatus and B. subterraneus, have experienced declines, and the latter is now extinct in the UK. The presence of these species in New Zealand presents an opportunity to study their ecology in a contrasting environment. Forage visits made by bumblebees in New Zealand were recorded across a season. Ninety six percent of visits were to six non- native forage plants (Cirsium vulgare, Echium vulgare, Hypericum perforatum, Lotus corniculatus, Lupinus polyphyllus and Trifolium pratense). All but L. polyphyllus are European plant species, and three are noxious weeds in New Zealand. Several of these plants have decreased in abundance in the UK, providing a potential explanation for the declines of B. ruderatus and B. subterraneus in Britain. In contrast to studies conducted elsewhere, B. ruderatus, B. terrestris and B. hortorum did not differ in diet breadth and overlap in forage use was high, probably due to the reduced diversity of bumblebee forage plants present in New Zealand. Diel partitioning of forage use between the species was observed, with foraging activity of B. hortorum greatest in the morning and evening, B. ruderatus greatest in the middle of the day and B. terrestris intermediate between the two. These patterns correspond to the climatic preferences of each species as evidenced by their geographic ranges. Implications for bumblebee conservation in the UK are discussed.
Type: Journal Article
URI: http://hdl.handle.net/1893/3300
DOI Link: http://dx.doi.org/10.1007/s10841-010-9287-1
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Biological and Environmental Sciences
University of Stirling
Biological and Environmental Sciences
Biological and Environmental Sciences

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