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Title: Interactions between two species of recently-sympatric invasive honeybees: Apis cerana induces aggression in Apis mellifera during foraging
Contributor(s): Gross, Caroline  (author)orcid ; Whitehead, Joshua  (author); Mackay, Ellis (author); Mackay, Keith Daivd  (author)orcid ; Andrew, Nigel  (author)orcid ; Paini, Dean (author)
Publication Date: 2019
Open Access: Yes
DOI: 10.25952/5d687c3133212Open Access Link
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Abstract/Context: Honeybees Apis mellifera (European honeybee) and Apis cerana (Asian honeybee) are cosmopolitan, having colonized continents beyond their natural ranges. In tropical Australia, these alien species have recently become sympatric. The environmental and economic impacts of these species when in sympatry remain to be seen; however, any interspecific competition may be of significance. We examined conspecific and heterospecific interactions between honeybees foraging at the nectar- and pollen-providing flowers of Antipogon leptopus (Polygonaceae). We cross-classified 554 encounters by three variables; incoming bee species, resident bee species, and one of four potential responses: (1) incoming defers to resident; (2) incoming procures the flower from resident; (3) incoming and resident share the flower; or (4) both incoming and resident abandon the flower. We also measured aggression and foraging rates of workers at flowers. Both species visited similar numbers of flowers in a foraging bout and spent similar foraging times on individual flowers. Incoming A. mellifera were more likely to procure flowers from resident A. cerana, and incoming A. cerana were more likely to defer to resident A. mellifera. A. mellifera were more aggressive toward heterospecifics than conspecifics, with heterospecifics 4.5 times more likely to provoke an aggressive response. However, no significant difference between conspecific and heterospecific aggression was observed for incoming A. cerana. A. mellifera were less abundant, yet overall more likely to acquire flowers and use aggression to do so. Costs of aggression may help explain the population-scale dominance of A. cerana over A. mellifera in this study.
Publication Type: Dataset
Field of Research (FOR): 060208 Terrestrial Ecology
Socio-Economic Objective (SEO): 960405 Control of Pests, Diseases and Exotic Species at Regional or Larger Scales
Keywords: sympatric species
invasive honeybees
HERDC Category Description: X Dataset
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School of Environmental and Rural Science
UNE Business School

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