Welcome to the Department of Biology

Department of Biology at Illinois State University
Department of Biology
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Dr. Benjamin Sadd

Assistant Professor of Infectious Disease Ecology
  • CURRENT COURSES
  • BSC 201.Sec 001 Ecology
  • BSC 499.Sec 002 Independent Research For The Master's Thesis
  • BSC 499.Sec 102 Independent Research For The Master's Thesis
  • BSC 290.Sec 043 Research In Biological Sciences
  • BSC 599.Sec 024 Research In The Biological Sciences
  • TEACHING INTERESTS
  • Ecology, Evolution, Infectious Disease, Ecological immunology, Entomology
  • RESEARCH INTERESTS
  • Ecology and evolution of host-parasite relationships, Host immune defence evolution, Ecological immunology, Pollinator health
  • Ph D Natural Sciences - 2008
  • Swiss Federal Institute of Technology (ETH)
  • Zurich, Switzerland
  • Dissertation/Thesis topic: The ecology of immune priming in a social context
  • MS Zoology - 2004
  • University of Sheffield
  • United Kingdom
  • Dissertation/Thesis topic: Autoreactivity in the insect immune system
  • SELECTED PUBLICATIONS
  • Duffield, KR, Bowers, EK, Sakaluk, SK & BM Sadd (2017) A dynamic threshold model for terminal investment. Behavioral Ecology and Sociobiology, 71, 185
  • Czerwinski, MA & Sadd, BM (2017) Detrimental interactions of neonicotinoid pesticide exposure and bumblebee immunity. Journal of Experimental Zoology A, 327, 273-283
  • Palmer‐Young, EC, Sadd, BM & Adler, LS (2017) Evolution of resistance to single and combined floral phytochemicals by a bumble bee parasite. Journal of Evolutionary Biology, 30, 300-312
  • Fauser, A, Sandrock, C, Neumann, P & Sadd, BM (2017) Neonicotinoids override a parasite exposure impact on hibernation success of a key bumblebee pollinator. Ecological Entomology, 42, 306-314
  • Carter, A, Sadd, BM, Tuberville, T, Paitz, R & Bowden, RM (accepted) Short heatwaves during fluctuating incubation regimes produce females under temperature-dependent sex determination with implications for sex ratios in nature. Scientific Reports
  • Palmer-Young, EC, Sadd, BM, Irwin, RE & Adler, LS (2017) Synergistic effects of floral phytochemicals against a bumble bee parasite. Ecology and Evolution, 7, 1836-1849
  • Palackdharry, S, Sadd, BM, Vogel, LA & Bowden, RM (2017) The effect of environmental temperature on reptilian peripheral blood B cell functions. Hormones and Behavior, 88, 87-94
  • Palmer-Young, EC, Sadd, BM, Stevenson, PC, Irwin, RE & Adler, LS (2016) Bumble bee parasite strains vary in resistance to phytochemicals. Scientific Reports, 6
  • Barribeau, SM, Schmid-Hempel, P & Sadd, BM (2016) Royal decree: gene expression in trans-generationally immune primed bumblebee workers mimics a primary immune response. PLOS ONE 11: e0159635
  • Barribeau, SM, Sadd, BM, du Plessis, L, Brown, MJF, Buechel, SD, Cappelle, K, et al. (2015) A depauperate immune repe​rtoire precedes evolution of sociality in bees. Genome Biology​, 16, 83
  • Rahnamaeian, M, Cytrynska, M, Zdybicka-Barabas, A, Dobslaff, K, Wiesner, J, Twyman, R, Züchner, T, Sadd, BM, Regoes, R, Schmid-Hempel, P & Vilcinskas, A (2015) Insect antimicrobial peptides show potentiating functional interactions against Gram-negative bacteria. Proceedings of the Royal Society B: Biological Sciences, 282, 201550293
  • Sadd, BM, Barribeau SM, Bloch G, de Graaf DC, Dearden P, Elsik CG, et al. (2015) The genomes of two key bumblebee species with primitive eusocial organization. Genome Biology, 16, 76
  • Duffield, K.R., Hunt, J., Rapkin, J., Sadd, B.M. and S. K. Sakaluk. 2015. Terminal investment in the gustatory appeal of nuptial food gifts in crickets. Journal of Evolutionary Biology 28: 1872-1881.
  • Barribeau, SM, Sadd, BM, du Plessis, L & Schmid-Hempel, P (2014) Gene expression differences underlying genotype-by-genotype specificity in a host-parasite system. Proceedings of the National Academy of Sciences USA, 111, 3496-3501
  • *Fauser-Misslin, A, *Sadd, BM, Neumann, P & Sandrock, C (2014) Influence of combined pesticide and parasite exposure on bumblebee colony traits in the laboratory. Journal of Applied Ecology, 51, 450-459 *Joint first authors
  • Sadd, BM & Barribeau, SM (2013) Heterogeneity in infection outcome: lessons from a bumblebee-trypanosome system. Parasite Immunology, 35, 339-349
  • Antonovics, J, Boots, M, Ebert, D, Koskella, B, Poss, M & Sadd, BM (2012) The origin of specificity by means of natural selection: evolved and non-host resistance in host-pathogen interactions. Evolution, 67, 1-9
  • Cisarovsky, G, Schmid-Hempel, P & Sadd, BM (2012) Robustness of the outcome of adult bumblebee infection with a trypanosome parasite after varied parasite exposures during larval development. Journal of Evolutionary Biology, 25, 1053-1059
  • Sadd, BM (2011) Food-environment mediates specific interactions between a bumblebee and its trypanosome parasite. Evolution, 65, 2995-3001
  • Sadd, BM & Schmid-Hempel, P (2009) A distinct infection cost associated with trans-generational priming of antibacterial immunity in bumblebees. Biology Letters, 5, 798-801
  • Sadd, BM & Schmid-Hempel P (2009) Principles of Ecological Immunology. Evolutionary Applications, 2, 113-121
  • Otti, O & Sadd, BM (2008) Parental guidance? Trans-generational influences on offspring life-history in mosquitoes. Trends in Parasitology, 24,197-199
  • Sadd, BM & Schmid-Hempel, P (2007) Facultative but persistent trans-generational immunity via the mother's eggs in bumblebees. Current Biology, 17, R1046-1047
  • Sadd, BM & Siva-Jothy, MT (2006) Self-harm caused by an insect’s innate immunity. Proceedings of the Royal Society B: Biological Sciences, 273, 2571-2574
  • Sadd, BM & Schmid-Hempel, P (2006) Insect immunity shows specificity in protection on secondary pathogen exposure. Current Biology, 16, 1206-1210
  • Sadd, BM et al. (2005) Trans-generational immune priming in a social insect. Biology Letters, 1, 386-388
  • PRESENTATIONS
  • FUNDED GRANTS