Abstract
We investigated the relative contribution of the queen and workers to colony nestmate recognition cues and on colony insularity in the Carpenter ant Camponotus fellah. Workers were either individually isolated, preventing contact with both queen and workers (colonial deprived, CD), kept in queenless groups, allowing only worker-worker interactions (queen deprived, QD) or in queenright (QR) groups. Two weeks post-separation QD and QR workers were amicable towards each other but both rejected their CD nestmates, which suggests that the queen does not measurably influence the colony recognition cues. By contrast, aggression between QD and QR workers from the same original colony was apparent only after six months of separation. This clearly demonstrates the power of the Gestalt and indicates that the queen is not a dominant contributor to the nestmate recognition cues in this species. Aggression between nestmates was correlated with a greater hydrocarbon (HC) profile divergence for CD than for QD and QR workers, supporting the importance of worker-worker interactions in maintaining the colony Gestalt odour. While the queen does not significantly influence nestmate recognition cues, she does influence colony insularity since within 3 days QD (queenless for six months) workers from different colony origins merged to form a single queenless colony. By contrast, the corresponding QR colonies maintained their territoriality and did not merge. The originally divergent cuticular and postpharyngeal gland HC profiles became congruent following the merger. Therefore, while workers supply and blend the recognition signal, the queen affects worker-worker interaction by reducing social motivation and tolerance of alien conspecifics.
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- Adamo S. A., Linn C. E., Hoy R. R. The role of neurohormonal octopamine during 'fight or flight' behaviour in the field cricket Gryllus bimaculatus. J Exp Biol. 1995 Aug;198(Pt 8):1691–1700. doi: 10.1242/jeb.198.8.1691. [DOI] [PubMed] [Google Scholar]
- Boulay R., Lenoir A. Social isolation of mature workers affects nestmate recognition in the ant Camponotus fellah. Behav Processes. 2001 Aug 15;55(2):67–73. doi: 10.1016/s0376-6357(01)00163-2. [DOI] [PubMed] [Google Scholar]
- Boulay R., Soroker V., Godzinska E. J., Hefetz A., Lenoir A. Octopamine reverses the isolation-induced increase in trophallaxis in the carpenter ant Camponotus fellah. J Exp Biol. 2000 Feb;203(Pt 3):513–520. doi: 10.1242/jeb.203.3.513. [DOI] [PubMed] [Google Scholar]
- Boulay R, Hefetz A, Soroker V, V, Lenoir A. Camponotus fellah colony integration: worker individuality necessitates frequent hydrocarbon exchanges. Anim Behav. 2000 Jun;59(6):1127–1133. doi: 10.1006/anbe.2000.1408. [DOI] [PubMed] [Google Scholar]
- Ikemoto S., Panksepp J. The effects of early social isolation on the motivation for social play in juvenile rats. Dev Psychobiol. 1992 May;25(4):261–274. doi: 10.1002/dev.420250404. [DOI] [PubMed] [Google Scholar]
- Lahav S., Soroker V., Vander Meer R. K., Hefetz A. Segregation of colony odor in the desert ant Cataglyphis niger. J Chem Ecol. 2001 May;27(5):927–943. doi: 10.1023/a:1010382919227. [DOI] [PubMed] [Google Scholar]
- Varlinskaya E. I., Spear L. P., Spear N. E. Social behavior and social motivation in adolescent rats: role of housing conditions and partner's activity. Physiol Behav. 1999 Oct;67(4):475–482. doi: 10.1016/s0031-9384(98)00285-6. [DOI] [PubMed] [Google Scholar]
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