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    Kilner, Rebecca M. and Langmore, Naomi E. 2011. Cuckoos versus hosts in insects and birds: adaptations, counter-adaptations and outcomes. Biological Reviews, Vol. 86, Issue. 4, p. 836.


    Bunk, E. Sramkova, A. and Ayasse, M. 2010. The role of trail pheromones in host nest recognition of the social parasitic bumblebees Bombus bohemicus and Bombus rupestris (Hymenoptera: Apidae). Chemoecology, Vol. 20, Issue. 3, p. 189.


    Martin, Stephen J. Carruthers, Jonathan M. Williams, Paul H. and Drijfhout, Falko P. 2010. Host Specific Social Parasites (Psithyrus) Indicate Chemical Recognition System in Bumblebees. Journal of Chemical Ecology, Vol. 36, Issue. 8, p. 855.


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MORPHOLOGICAL SPECIALIZATIONS OF THE BUMBLE BEE SOCIAL PARASITE PSITHYRUS ASHTONI (CRESSON) (HYMENOPTERA: APIDAE)

  • Richard M. Fisher (a1) and Blair J. Sampson (a1)
  • DOI: http://dx.doi.org/10.4039/Ent12469-1
  • Published online: 01 May 2012
Abstract
Abstract

Psithyrus spp. (Hymenoptera: Apidae) are obligate social parasites of bumble bees (Bombus spp.). Morphological and physiological features of P. ashtoni (Cresson) females, which may facilitate the successful usurpation of host nests, were examined. Parasite females were no larger than B. terricola Kirby queens, although they possessed a number of protective modifications to the exoskeleton, as well as increased offensive armament, including larger mandibles and a longer venom gland. Females of P. ashtoni and P. insularis (Smith) possessed a greater number of ovarioles than host queens, and produced smaller eggs. The Dufour’s glands of the two Psithyrus species were significantly larger than those of B. terricola. There appears to have been considerable convergence in the evolution of socially parasitic lifestyles in bumble bees and wasps (Vespula spp.), presumably as a consequence of similar selective pressures operating on parasites belonging to these distantly related but socially similar taxa.

Résumé

Les Psithyrus spp. (Hymenoptera : Apidae) sont des parasites sociaux obligatoires des bourdons (Bombus spp.). Les caractéristiques morphologiques et physiologiques des femelles de P. ashtoni (Cresson) qui peuvent favoriser l’usurpation des nids de leurs hôtes ont fait l’objet d’une étude. Les femelles parasites ne sont pas plus grosses que les reines de B. terricola Kirby, mais leur exosquelette comporte plusieurs modifications protectrices et elles possèdent plus d’armes offensives, notamment des mandibules plus grandes et une glande à venim plus longue. Les femelles de P. ashtoni et de P. insularis (Smith) ont aussi un plus grand nombre d’ovarioles que les reines hôtes et produisent des oeufs plus petits. Les glandes de Dufour des deux espèces de Psithyrus sont significativement plus grandes que celles de B. terricola. Il semble y avoir eu beaucoup de convergence dans l’évolution du mode de vie des parasites sociaux chez les bourdons et les quêpes (Vespula spp.), probablement à la suite de pressions de sélection similaires opérées sur des parasites appartenant à des taxons peu apparentés, mais semblables par leur mode de vie social.

[Traduit par la rédaction]

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

R.A. Cumber 1949. The biology of the humble-bees, with special reference to the production of the worker caste. Trans. R. ent. Soc. 100: 145.

R.M. Fisher 1987. Queen-worker conflict and social parasitism in bumble bees (Hymenoptera: Apidae). Anim. Behav. 35: 10261036.

R.M. Fisher 1988. Observations on the reproductive behaviours of three European species of cuckoo bumble bee (Hymenoptera: Apidae). Insect Soc. 35: 341354.

J.T. Medler 1962. Morphometric studies on bumble bees. Ann. ent. Soc. Am. 55: 212218.

R.C. Plowright , and S.C. Jay . 1977. On the size determination of bumble bee castes (Hymenoptera: Apidae). Can. J. Zool. 55: 11331138.

R.C. Plowright , and R.E. Owen . 1980. The evolutionary significance of bumble bee color patterns: A mimetic interpretation. Evolution 34: 622637.

H.C. Reed , and R.D. Akre . 1982. Morphological comparisons between the obligate social parasite, Vespula austriaca (Panzer), and its host, Vespula acadica (Sladen) (Hymenoptera: Vespidae). Psyche 89: 183195.

H.C. Reed , and R.D. Akre . 1983. Usurpation behavior of the yellowjacket social parasite, Vespula austriaca (Panzer) (Hymenoptera: Vespidae). Am. Midl. Nat. 110: 419432.

O.W. Richards 1927. The specific characters of the British humblebees (Hymenoptera). Trans. R. ent. Soc. 75: 233268.

K.W. Ross 1986. Kin selection and the problem of sperm utilization in social insects. Nature 323: 798800.

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The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
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