Small worker bumble bees (Bombus impatiens) are hardier against starvation than their larger sisters

Alford D.V. 1975. Bumblebees, Davis-Poynter. London.

Beshers S.N. and Fewell J.H. 2001. Models of division of labor in social insects. Annu. Rev. Entomol. 46: 413–440

Bonabeau E., Dorigo M. and Theraulaz G. 2000. Inspiration for optimization from social insect behaviour. Nature 406: 39–42

Chapman R.E. and Bourke A.F.G. 2001. The influence of sociality on the conservation biology of social insects. Ecol. Lett. 4: 650–662

Chown S.L. and Gaston K.J. 1999. Exploring links between physiology and ecology at macro-scales: the role of respiratory metabolism in insects. Biol. Rev. 74: 87–120

Cnaani J. and Hefetz A. 1994. The effect of workers size frequency-distribution on colony development in Bombus terrestris. Insect. Soc. 41: 301–307

Cnaani J., Schmid-Hempel R. and Schmidt J.O. 2002. Colony development, larval development and worker reproduction in Bombus impatiens Cresson. Insect. Soc. 49: 164–170

Couvillon M.J. and Dornhaus A. 2009. Location, location, location: larvae position inside the nest is correlated with adult body size in worker bumble bees (Bombus impatiens). Proc. R. Soc. B 276: 2411–2418

Cumber R.A. 1949. The biology of humble-bees, with special reference to the production of the worker caste. Trans. R. Ent. Soc. Lond. 100: 1–45

Dornhaus A. 2008. Specialization does not predict individual efficiency in an ant. PLoS 6:e285

Foster R.L., Brunskill A., Verdirame D. and O’Donnell S. 2004. Reproductive physiology, dominance interactions, and division of labour among bumble bee workers. Physiol. Entomol. 29: 327–334

Free J.B. and Butler C.G. 1959. Bumblebees, Collins. London.

Gardner K., Foster R. and O’Donnell S. 2007. Experimental analysis of worker division of labor in bumblebee nest thermoregulation (Bombus huntii, Hymenoptera: Apidae). Behav. Ecol. Sociobiol. 61: 783–792

Gilchrist G.W., Huey R.B. and Serra L. 2001. Rapid evolution of wing size clines in Drosophila subobscura. Genetica 112: 273–286

Goulson D., Peat J., Stout J.C., Tucker J., Darvill B., Derwent L.C. and Hughes W.O.H. 2002. Can alloethism in workers of the bumblebee, Bombus terrestris, be explained in terms of foraging efficiency? Anim. Behav. 64: 123–130

Heinze J., Foitzik S., Fischer B., Wanke T. and Kipyatkov V.E. 2003. The significance of latitudinal variation in body size in a holarctic ant, Leptothorax acervorum. Ecography 26: 349–355

Hines H.M. 2008. Historical biogeography, divergence times, and diversification patterns of bumble bees (Hymenoptera: Apidae: Bombus). Syst. Biol. 57: 58–75

Hoffmann A.A. and Harshman L.G. 1999. Desiccation and starvation resistance in Drosophila: patterns of variation at the species, population and intrapopulation levels. Heredity 83: 637–643

Hölldobler B. and Wilson E.O. 1990. The Ants, Harvard University Press. Cambridge, Massachusetts. 732 pp

Jandt J. and Dornhaus A. 2009. Spatial organization and division of labor in the bumble bee, Bombus impatiens. Anim. Behav. 77: 641–651

Markiewicz D. and O’Donnell S. 2001. Social dominance, task performance and nutrition: implications for reproduction in eusocial wasps. J. Comp. Physiol. A 187: 327–333

Michener C.D. 2000. The Bees of the World, Johns Hopkins University Press. Baltimore.

O’Donnell S. and Foster R.L. 2001. Thresholds of response in nest thermoregulation by worker bumble bees, Bombus bifarius nearcticus (Hymenoptera: Apidae). Ethology 107: 387–399

Oster G.F. and Wilson E.O. 1978. Caste and Ecology in the Social Insects, Princeton University Press. Princeton, New Jersey. 352 pp

Peat J., Tucker J. and Goulson D. 2005. Does intraspecific size variation in bumblebees allow colonies to efficiently exploit different flowers? Ecol. Entomol. 30: 176–181

Plowright R.C. and Jay S.C. 1968. Caste differentiation in bumblebees (Bombus Latr.: Hym.) .1. Determination of female size. Insect. Soc. 15: 171–192

Porter S.D. and Jorgensen C.D. 1981. Foragers of the harvester ant, Pogonomyrmex owyheei: a disposable caste? Behav. Ecol. Sociobiol. 9: 247–256

Robinson G.E. 1992. Regulation of division-of-labor in insect societies. Annu. Rev. Entomol. 37: 637–665

Sokal R.R. and Rohlf F.J. 1995. Biometry, W.H. Freeman and Company. New York. 850 pp

Spaethe J. and Weidenmuller A. 2002. Size variation and foraging rate in bumblebees (Bombus terrestris). Insect. Soc. 49: 142–146

Stillwell R.A.C., Morse G.A.E. and Fox C.A. 2007. Geographic variation in body size and sexual size dimorphism of a seed-feeding beetle. Amer. Nat. 170: 358–369

Telonis-Scott M., Guthridge K.M. and Hoffmann A.A. 2006. A new set of laboratory-selected Drosophila melanogaster lines for the analysis of desiccation resistance: response to selection, physiology and correlated responses. J. Exp. Biol. 209: 1837–1847

Toth A.L. and Robinson G.E. 2005. Worker nutrition and division of labour in honeybees. Anim. Behav. 69: 427–435

Tschinkel W.R. 1998. Sociometry and sociogenesis of colonies of the harvester ant, Pogonomyrmex badius: worker characteristics in relation to colony size and season. Insect. Soc. 45: 385–410

Wilson E.O. 1985. The sociogenesis of insect colonies. Science 228: 1489–1495

Wilson E.O. 1987. Causes of ecological success: the case of the ants. J. Anim. Ecol. 56: 1–9

Yerushalmi S., Bodenhaimer S. and Bloch G. 2006. Developmentally determined attenuation in circadian rhythms links chronobiology to social organization in bees. J. Exp. Biol. 209: 1044–1051