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Wilfert, L., Gadau, J., Baer, B., Reber, & Schmid-Hempel, P. 2007. Natural variation in the genetic architecture of a host-parasite interaction in the bumblebee Bombus terrestris. Mol. Ecol. 16, 1327-1339.
Baer, B., Armitage, S. A. O. & Boomsma, J. J. 2006. Sperm storage induces an immunity cost in ants. Nature 441, 872-875.
Baer, B., de Jong, G., Schmid-Hempel, R., Schmid-Hempel, P., Høeg, J. T. & Boomsma, J. J. 2006. Heritability of sperm length in the bumblebee Bombus terrestris. Genetica 127: 11-23.
Baer, B. & Boomsma, J. J. 2006. Mating biology of the two leaf-cutting ants Atta colombica and A. cephalotes. J. Morph. 267: 1165-1171.
Baer, B. & Schmid-Hempel, P. 2006. Phenotypic variation in male and worker encapsulation response in the bumblebee Bombus terrestris. Ecol. Entomol. 31: 591-596.
Baer, B., Krug, A., Boomsma, J. J. & Hughes, W. O. H. 2005. Immunity, sex and parasites in leaf cutting ants. Insect. Soc. 52 (3), 298-303.
Brown, M. & Baer, B. 2005) The evolutionary significance of long copulation duration in bumblebees. Apidologie 36 (2), 157-167.
Baer, B. (2005) Sexual selection in Apis bees. Apidologie 36 (2), 187-200.
Baer, B. & Schmid-Hempel, P. (2005) Sperm influences female hibernation success, survival and fitness in the bumblebee Bombus terrestris. Proc. R. Soc. L. 272 (1560), 319-323.
Boomsma, J.J., Baer, B. & Heinze, J. 2005. The evolution of male traits in social insects. Annu. Rev. Entomol. 50, 395-420.
Baer, B. & Boomsma, J.J. 2004. Male reproductive investment and polyandry in fungus-growing ants. Behav. Ecol. 15 (3), 426-432.
Baer, B. 2003. Bumblebees as model organisms to study male sexual selection in social insects. Behav. Ecol. Sociobiol. 54 (6), 521-533.
Baer, B. & Schmid-Hempel, P. 2003. Effects of selective episodes in the field on life history traits in the bumblebee Bombus terrestris. Oikos 101 (3), 563-568.
Baer, B., Schmid-Hempel, P., Hoeg, J. T. & Boomsma, J. J. 2003. Sperm length, sperm storage and mating system evolution in bumblebees. Insect. Soc. 50 (2), 101-108.
Baer, B. & Schmid-Hempel, P. 2003. Bumblebee workers from different sire groups vary in susceptibility to parasite infections. Ecol. Letters 6 (2), 106 – 110.
Brown, M. J. F., Baer, B., Schmid-Hempel, R. & Schmid-Hempel, P. 2002. Dynamics of multiple mating in the bumblebee Bombus hypnorum. Insect. Soc. 49 (4), 315 319.
Baer, B. & Schmid-Hempel, P. 2001. Unexpected consequences of polyandry for parasitism and fitness in the bumblebee B. terrestris. Evolution 55 (8), 1639-1643.
Sauter, A., Brown, M.J.F., Baer, B. & Schmid-Hempel, P. 2001. Males of social insects can prevent queens from multiple mating. Proc. R. Soc. L., 268 (1475), 1449-1454.
Baer, B., Morgan, E.D. & Schmid-Hempel, P. 2001. A non-specific fatty acid prevents females from re-mating in bumblebees. Proc. Natl. Acad. Sci. 98 (7), 3926-3928.
Baer, B., Maile, R., Schmid-Hempel, P. Morgan, E. D. & Jones, G.R. 2000. Chemistry of a mating plug in bumblebees. J. Chem. Ecol. 26 (8), 1869-1875.
Baer, B. & Schmid-Hempel, P. 2000. Applied aspects of the artificial insemination for bumblebees. In Sommeijer, M J. & de Ruijter, A. eds: Insect pollination in greenhouses. Koninklijke Bibliotheek, Den Haag.
Baer, B. & Schmid-Hempel, P. 2000. The artificial insemination of bumblebees. Insect. Soc. 47 (2), 183-187.
Duvoisin, N., Baer, B. & Schmid-Hempel, P. 1999. Sperm transfer and male competition in a bumblebee. Anim. Behav. 5 (4), 743-749.
Baer, B. & Schmid-Hempel, P. 1999. Experimental variation in polyandry affects parasite loads and fitness in a bumblebee. Nature 397 (6715), 151 – 154.
Brodmann, P. A., Reyer, H. U. & Baer, B. 1997. The relative importance of habitat structure and of prey characteristics for the foraging success of water pipits (Anthus spinoletta). Ethology 103 (3), 222 – 235.
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