Abstract
Pheromonal signals associated with queen and worker policing prevent worker reproduction and have been identified as important factors for establishing harmony in the honeybee (Apis mellifera) colony. However, "anarchic workers", which can evade both mechanisms, have been detected at low frequency in several honeybee populations. Worker bees of the Cape honeybee, Apis mellifera capensis, also show this anarchistic trait but to an extreme degree. They can develop into so called "pseudoqueens", which release a pheromonal bouquet very similar to that of queens. They prime and release very similar reactions in sterile workers to those of true queens (e.g. suppress ovary activation; release retinue behavior). Here we show in an experimental bioassay that lethal fights between these parasitic workers and the queen (similar to queen–queen fights) occur, resulting in the death of either queen or worker. Although it is usually the queen that attacks the parasitic workers and kills many of them, in a few cases the workers succeeded in killing the queen. If this also occurs in a parasitized colony where the queen encounters many parasitic workers, she may eventually be killed in one of the repeated fights she engages in.
References
Crewe RM (1982) Compositional variability: the key to social signals produced by honeybee mandibular glands. In: Breed MD, Michener CD, Evans HE (eds) The biology of social insects. Westview, Boulder, Colo., pp 318–322
Gilley DC (2001) The behavior of honey bees (Apis mellifera ligustica) during queen duels. Ethology 107:601–622
Greeff JM (1996) Effects of thelytokous worker reproduction on kin selection and conflict in the Cape honeybee, Apis mellifera capensis. Philos Trans R Soc Lond B 351:617–625
Inoue H, Nakajima T, Okada I (1987) The venomous components in the worker and queen honey bees during their maturation and the seasonal generation. Jpn J Sanit Zool 38:211–217
Kryger P (2001) The pseudo-clone of Apis mellifera capensis: an obligate social parasite in honeybees. In: Proceedings of the XXXVII International Apicultural Congress, Durban South Africa, p 33
Martin S, Beekman M, Wossler TC, Ratnieks FLW (2002) Self-replicating honeybees evade worker policing. Nature 415:163–165
Moritz RFA, Haberl M (1994) Lack of meiotic recombination in thelytokous parthenogenesis of laying workers of Apis mellifera capensis (the Cape honeybee). Heredity 73:98–102
Moritz RFA, Kryger P, Allsopp M (1999) Lack of worker policing in the Cape Honeybee (Apis mellifera capensis). Behaviour 136:1079–1092
Moritz RFA, Simon UE, Crewe RM (2000) Pheromonal contest between honeybee workers. Naturwissenschaften 87:395–397
Moritz RFA, Crewe RM, Hepburn HR (2002) Queen evasion and mandibular gland secretion of honeybee workers (Apis mellifera L.). Insectes Soc 49:86–91
Neumann P, Hepburn HR (2002) Behavioural basis for social parasitism of Cape honeybees (Apis mellifera capensis Esch.). Apidologie 33:165–192
Neumann P, Moritz RFA (2002) The Cape honeybee phenomenon: the sympatric evolution of a social parasite in real time? Behav Ecol Sociobiol 52:271–281
Oldroyd BP, Smolenski AJ, Cornuet JM Crozier RH (1994) Anarchy in the beehive. Nature 371:749
Palmer KA, Oldroyd BP (2000) Evolution of multiple mating in the genus Apis. Apidologie 31:235–248
Pflugfelder J, Koeniger N (2000) Fighting virgins: how do young unmated Apis mellifera queens recognize each other ? Apidologie 31:639–641.
Pflugfelder J, Koeniger N (2003) Fight between virgin queens (Apis mellifera) is initiated by contact to the dorsal abdominal surface. Apidologie 34:249–256
Ratnieks FLW (1988) Reproductive harmony via mutual policing by workers in eusocial insects. Am Nat 132:217–236
Ratnieks FLW, Visscher PK (1989) Worker policing in the honey bee. Nature 342:796–797
Simon UE, Moritz RFA, Crewe RM (2001) The ontogenetic pattern of mandibular gland components in queenless worker bees (Apis mellifera capensis Esch.). J Insect Physiol 47:735–738
Winston ML (1987) The biology of the honey bee. Harvard University Press, Cambridge, Mass.
Wossler TC (2002) Pheromone mimicry by Apis mellifera capensis social parasites leads to reproductive anarchy in host A. m. scutellata colonies. Apidologie 33:139–163
Acknowledgements
We thank Rhian L.M. Moritz for helping in the laboratory, Theresa C. Wossler for assisting with the GC set-up, and Anton Scheele for bee supply. Financial support was granted by the Volkswagenstiftung (R.F.A.M.) and the NRF (R.F.A.M., R.M.C.).
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Moritz, R.F.A., Pflugfelder, J. & Crewe, R.M. Lethal fighting between honeybee queens and parasitic workers (Apis mellifera). Naturwissenschaften 90, 378–381 (2003). https://doi.org/10.1007/s00114-003-0445-0
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DOI: https://doi.org/10.1007/s00114-003-0445-0