Publications by Boris Baer


Links to download papers are added if available, for reprints please write an E-mail to boris.baer[at]uwa.edu.au.

2016

Paynter, E., Millar A. H., Welch, M., Baer-Imhoof, B., Coa, D., & Baer, B. Insights into the molecular basis of long-term storage and survival of sperm in the honeybee (Apis mellifera). Sci. Rep.,7: 40236.
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Dosselli, R., Grassl J., Carson, A., Simmons, L. W., & Baer, B. Flight behaviour of honey bee (Apis mellifera) workers is altered by early infections of the fungal parasite Nosema apis Sci. Rep., 6: 36649.
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Kurze, C., Dosselli, R., Grassl, J., Le Conte, Y., Kryger, P., Baer, B. & Moritz, R. Differential proteomics reveals novel insights into Nosema - honey bee interactions Insect Biochem. Mol. Biol., 79: 42-49.
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Liberti, J., Baer, B. & Boomsma, J. J. Queen reproductive tract secretions enhance sperm motility in ants Biol. Letters, 12: 20160722.
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Peng, Y., Grassl, J., Millar, A. H. & Baer, B. Seminal fluid of honey bees contains multiple mechanisms to combat infections of the sexually transmitted pathogen Nosema apis Proc. R. Soc. B, 283: 20151785.
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Grassl, J., Peng, Y., Baer-Imhoof, B., Welch, M., Millar, A. H., & Baer, B. Infections with the sexually transmitted pathogen Nosema apis trigger an immune response in the seminal fluid of honey bees (Apis mellifera) J. Prot. Res. available online.
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Baer, B., Collins, J., Maalaps, K. & den Boer, S. P. A. Sperm use economy of honeybee (Apis mellifera) queens Ecol. Evol., 6 (9): 2877-2885.
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Baer, B. & Millar, A.H. Proteomics in Evolutionary Ecology J. Prot. 135: 4-11.
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Collins, J., Baer, B. & Weber, E.J. Evolutionary Biology in Economics: A Review The Economic Record, 92: 291–312.
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Baer, B. Proximate and ultimate consequences of polyandry in ants (Hymenoptera: Formicidae) Myrmecol. News 22: 1-9.
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2015

Peng, Y., Baer-Imhoof, B., Millar, A.H. & Baer, B. Consequences of Nosema apis infection for male honey bees and their fertility Sci. Rep. 5: 10565.
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Roberts, K., Evison, S., Baer, B. & Hughes, W.O.H. The cost of promiscuity: Sexual transmission of Nosema microsporidian parasites in polyandrous honey bees Sci. Rep. 5: 10982, 1-7.
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Hoppe, P. P., Safer, A., Amaral-Rogers, V., Bonmatin, J. M., Goulson, D., Menzel, R., & Baer, B. Effects of a neonicotinoid pesticide on honey bee colonies: a response to the field study by Pilling et al. (2013) Environ. Sci. Eur. 27: 28.
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Shaw, J., Boyd, A., House, M., Woodward, R., Mathes, F., Cowin, G., Saunders, M., & Baer, B. Magnetic particle mediated magnetoreception J. R. Soc. Interface, 12: 20150499.
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Baer, B. Female Choice in Social Insects. In Peretti, A. & Aisenberg, A. eds.: Cryptic Female Choice in Arthropods: Patterns, Mechanisms and Prospects. Springer, pp 461-477.
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Collins, J., Baer, B. & Weber, E. J. Sexual selection, conspicuous consumption and economic growth J. Bioecon. 17: 189-206.
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Lach, L., Kratz, M. & Baer, B. Parasitized honey bees are less likely to forage and carry less pollen J. Invertebr. Pathol. 130: 64-71.
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den Boer, S.P.A., Stuerup, M., Boomsma, J.J. & Baer, B. The ejaculatory biology of leafcutter ants J. Insect Physiol. 74 : 56-62.
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2014

Baer, B. Sexual Selection in Social Insects. In Simmons, L.W.S. & Shuker, D. eds.: The Evolution of Insect Mating Systems. Oxford University Press, Oxford. pp 261-274.
Collins, J., Baer, B. & Weber, E. J. Economic growth and evolution: Parental preference for quality and quantity of offspring. Macroecon. Dynamics, 18 (8): 1773-1796.
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Babis, M., Holman, L., Fenske, R., Thomas, M. & Baer, B. Cuticular lipids correlate with age and insemination status in queen honeybees Insect. Sociaux, 61 (4): 337-345.
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Paynter, E., Baer-Imhoof, B., Linden, M., Lee-Pullen, T., Heel K., Rigby, P. & Baer, B. Flow cytometry as a rapid and reliable method to quantify sperm viability in the honeybee Apis mellifera Cytometry Part A 85 (5): 463-472.
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Peng, Y., Pullen-Lee T., Heel, K., Millar, A.H. & Baer, B. Quantifying spore viability of the honey bee pathogen Nosema apis using flow cytometry. Cytometry Part A, 85(5) 454-462.
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Stuerup, M., Baer, B. & Boomsma, J. J. Short independent lives and selection for maximal sperm survival make investment in immune defences unprofitable for leaf-cutting ant males Behav. Ecol. Sociobiol. 68: 947-955.
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2013

Zareie, R., Eubel, H., Millar, A. H. & Baer, B. Long term survival of high quality sperm: Insights into the sperm proteome of the honeybee Apis mellifera. J. Prot. Res. 12(11): 5180-5188.
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Stuerup, M., Baer-Imhoof, B., Nash, D. R., Boomsma, J. J. & Baer, B. When every sperm counts: factors affecting male fertility in the honeybee Apis mellifera, . Behav. Ecol. 24(5): 1192-1198. Download from Behavioral Ecology or Read abstract.
den Boer, S. P. A., Boomsma, J. J., & Baer, B. A technique to artificially inseminate leafcutter ants. Insect. Soc. 60: 111-118.
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Chappell, P., Roberts, K., Baer, B. & Hughes, W. O. H. Mating system and population genetic structure of the bulldog ant Myrmecia pavida.. Myrmecol. News 18: 25-32.
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Collins, J., Baer, B. & Weber, E. J. Population, technological progress and the evolution of innovative potential. University of Western Australia Discussion paper 13.21
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2012

Jaffé, R., Garcia-Gonzalez, F., den Boer, S. P. A., Simmons, L. W. & Baer, B. Patterns of paternity skew among polyandrous social insects: What can they tell us about the potential for sexual selection? Evolution, 66 (12): 3778-3788.
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Baer, B., Zareie, R., Paynter, E., Poland, V. & Millar, A. H. Seminal fluid proteins differ in abundance between genetic lineages of honeybees. J. Prot. 75 (18): 5646-5653.
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2011

Hartke, T. R. & Baer, B. The mating biology of termites: A comparative review. Anim. Behav. 82: 927-936.
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Lowe, E. C., Simmons, L. W., Baer, B. Worker heterozygosity and immune response in feral and managed honeybees (Apis mellifera). Aust. J. Zool. 59: 73-78.
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Fitzpatrick, J. L. & Baer, B. Polyandry reduces sperm length variation in social insects. Evolution 65: 3006-3012.
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King, M., Eubel, H., Millar, A. H. & Baer, B. Proteins within the seminal fluid are crucial to keep sperm viable in the honeybee Apis mellifera . J. Insect Physiol. 57: 409-414.
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Poland, V., Eubel, H., King, M., Solheim, C., Millar, A. H., & Baer, B. Stored sperm differs from ejaculated sperm by proteome alterations associated with energy metabolism in the honeybee Apis mellifera. Mol. Ecol. 20:2643-2654.
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Baer B. The copulation biology of ants (Hymenoptera: Formicidae). Myrmecol. News 14: 55-68.
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Stuerup, M., den Boer, S. P. A., Nash, D. R., Boomsma, J. J., & Baer, B. Variation in male body size and reproductive allocation in the leafcutter ant Atta colombica: Estimating variance components and possible trade-offs. Insect. Soc. 58: 47-55.
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2010

den Boer, S. P. A., Baer, B. & Boomsma, J. J. Seminal fluid mediates ejaculate competition in social insects. Science 327: 1506-1509.
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Armitage, S. A. O., Boomsma, J. J. & Baer, B. Diploid male production in a leaf-cutting ant. Ecol. Entomol. 35: 175-182.
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2009

den Boer, S. P. A., Baer, B., Dreier, S., Aron, S., Nash, D. R. & Boomsma, J. J. Prudent sperm use by leaf-cutter ant queens. Proc. R. Soc. B 276: 3945-3953.
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Baer, B., Eubel, H., Taylor, N. L., O'Toole, N. & Millar, H. A. (2009) Insights into female sperm storage from the spermathecal fluid proteome of the honeybee Apis mellifera. Gen. Biol. 10: R 67.1 - 67.16.
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Baer, B., den Boer, S. P. A., Kronauer, D. J. C., Nash, D. R. & Boomsma, J. J. (2009) Fungus gardens of the leafcutter ant Atta colombica function as egg nurseries for the snake Leptodeira annulata. Insect. Soc. 56: 289-291.
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To see the electronic appendix click here.

Himler, A. G., Calderal, E. J., Baer, B., Schultz, T., Fernandez-Marin, H. & Mueller U. G. (2009) No sex in fungus-farming ants or their crops. Proc. R. Soc. B 276: 2611-2616.
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Baer, B., Dijkstra, M., Nash, D. R., Mueller, U. & Boomsma, J. J. (2009) Sperm length evolution in the fungus-growing ants. Behav. Ecol. 20: 38-45.
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Baer, B., Heazlewood, J. L., Taylor, N. L., Eubel, H. & Millar, H. A. (2009) The seminal fluid proteome of the honeybee Apis mellifera. Proteomics 9: 2085-2097.
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Den Boer, S. P. A., Boomsma, J. J & Baer, B. (2009) Honeybee males and queens use glandular secretions to enhance sperm viability before and after storage. J. Insect Physiol. 55: 538-543.
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2008

Den Boer, S. P. A., Boomsma, J.J & Baer, B. (2008) Seminal fluid enhances sperm viability in the leafcutter ant Atta colombica. Behav. Ecol. Sociobiol. 62: 1843-1849.
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2007

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.
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2006

Baer, B., Armitage, S. A. O. & Boomsma, J. J. (2006) Sperm storage induces an immunity cost in ants. Nature 441: 872-875.
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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.
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Baer, B. & Boomsma, J. J. (2006) Mating biology of the leaf-cutting ants Atta colombica and A. cephalotes. J. Morph. 267: 1165-1171.
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Baer, B. & Schmid-Hempel, P. (2006) Phenotypic variation in male and worker encapsulation response in the bumblebee Bombus terrestris. Ecol. Entomol. 31: 591-596.
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2005

Boomsma J. J., Baer B. & Heinze J. (2005): The evolution of male traits in social insects. Annu. Rev. Entomol. 50: 395-420.
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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.
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Baer, B. (2005) Sexual selection in Apis bees. Apidologie 36 (2), 187-200.
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Brown, M. J. F. & Baer, B. (2005) The evolutionary significance of long copulation duration in bumblebees. Apidologie 36 (2): 157-167.
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Baer B., Krug A., Boomsma J. J. & Hughes W. O. H. (2005) Examination of the immune responses of males and workers of the leaf-cutting ant Acromyrmex echinatior and the effect of infection. Insect. Soc. 52 (3): 298-303.
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2004

Baer B. & Boomsma J. J. (2004): Male reproductive investment and polyandry in fungus-growing ants. Behav. Ecol. 15 (3): 426-432.
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2003

Baer, B. (2003): Bumblebees as model organisms to study male sexual selection in social insects. Behav. Ecol. Sociobiol. 54 (6): 521-533.
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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.
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Baer, B., Schmid-Hempel, P., Høeg J. T. & Boomsma, J. J. (2003): Sperm length, sperm storage and mating system evolution in bumblebees. Insect. Soc. 50 (2): 101-108.
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Baer B. & Schmid-Hempel P. (2003): Bumblebee workers from different sire groups vary in susceptibility to parasite infections. Ecol. Letters 6 (2): 106-110.
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2002

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.
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2001

Baer B. & Schmid-Hempel P. (2001): Unexpected consequences of polyandry for parasitism and fitness in the bumblebee B. terrestris. Evolution 55 (8): 1639-1643.
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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.
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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.
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2000

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.
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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.
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1999

Duvoisin N., Baer B. & Schmid-Hempel P. (1999): Sperm transfer and male competition in a bumblebee. Anim. Behav. 5 (4): 743-749.
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Baer B. & Schmid-Hempel P. (1999): Experimental variation in polyandry affects parasite loads and fitness in a bumblebee. Nature 397 (6715): 151-154.
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1997

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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