School of Life Sciences

Image of Tamsin Majerus

Tamsin Majerus

Associate Professor and Director of Equality, Diversity and Inclusion (EDI), Faculty of Medicine & Health Sciences


Research Summary

My research uses genetic and genomic resources to investigate the colour-pattern polymorphism in Adalia bipunctata and A. decempunctata, the 2- and 10-spot ladybirds.

I have a long-term interest in the phenomenon of male-killing, its causes and evolutionary consequences. I have investigated this in several species of ladybird, both British and Asian, primarily Harmonia axyridis, otherwise known as the Harlequin ladybird.

Selected Publications

  • BAYOUMY, MOHAMED H., GHANIM, NABIL M. and MAJERUS, TAMSIN M. O., 2019. Limb Regeneration and Interference Competition Consequences on Foraging Efficiency of Coccinella undecimpunctata and Hippodamia variegata (Coccinellidae: Coleoptera) to Their Prey, Aphis craccivora (Hemiptera: Aphididae) JOURNAL OF ECONOMIC ENTOMOLOGY. 112(2), 577-584
  • BAYOUMY, MOHAMED H., AWADALLA, HAGAR S., FATHY, DINA M. and MAJERUS, TAMSIN M. O., 2018. Beyond killing: intra- and interspecific nonconsumptive effects among aphidophagous competitors ECOLOGICAL ENTOMOLOGY. 43(6), 794-803
  • MAJERUS, TMO and MAJERUS, MEN, 2012. Male-Killing In The Coccinellidae: Testing The Predictions Evolutionary Ecology. 26(1), 207-225
  • TYSON, J, MAJERUS T.M.O and WALKER, S. AND ARMOUR, J.A.L., 2010. Screening for common copy-number variants in cancer genes. Cancer Genetics & Cytogenetics. 203(2), 316-323
  • MAJERUS, TAMSIN M O and MAJERUS, MICHAEL E N, 2010. Intergenomic arms races: detection of a nuclear rescue gene of male-killing in a ladybird. PLoS pathogens. 6(7), e1000987
  • MAJERUS, TAMSIN M. O. and MAJERUS, MICHAEL E. N., 2010. Discovery and identification of a male-killing agent in the Japanese ladybird Propylea japonica (Coleoptera: Coccinellidae) BMC EVOLUTIONARY BIOLOGY. 10,
  • TYSON, J, MAJERUS, T.M.O and WALKER, S. AND ARMOUR, J.A.L., 2009. Quadruplex MAPH: improvement of throughput in high-resolution copy number screening. BMC Genomics. 10, 453
  • MAJERUS T.M.O., 2001. The Evolutionary Genetics of Male killing in the Coccinellidae. At: University of Cambridge and University of Cambridge, Department of Genetics Libraries
  • MAJERUS, M.E.N and GEOGHEGAN, I.E. & MAJERUS, T.M.O., 2000. Adaptive preferential selection of young coccinellid hosts by the parasitoid wasp Dinocampus coccinellae (Hymenoptera: Braconidae). Eur. J. Entomol.. 97, 161-164
  • VON DER SCHULENBURG, JHVDG, MAJERUS, TMO, DORZHU, CM, ZAKHAROV, IA, HURST, GDD and MAJERUS, MEN, 2000. Evolution of male-killing Spiroplasma (Procaryotae: Mollicutes) inferred from ribosomal spacer sequences. The Journal of general and applied microbiology. 46(2), 95-98
  • MAJERUS, M.E.N. & MAJERUS, T.M.O., 2000. Female-biased sex ratio due to male-killing in the Japanese ladybird Coccinula sinensis. Ecological Entomology. 25, 234-238
  • MAJERUS, M.E.N and MAJERUS, T.M.O. & CRONIN, A., 1999. The inheritance of a melanic form of the 7 spot ladybird, Coccinella septempunctata L. (Coleoptera: Coccinellidae). Brit. J. Ent. Nat. Hist.. 11, 180-184
  • MAJERUS, T M, GRAF VON DER SCHULENBURG, J H, MAJERUS, M E and HURST, G D, 1999. Molecular identification of a male-killing agent in the ladybird Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae). Insect molecular biology. 8(4), 551-5
  • HURST, G D, GRAF VON DER SCHULENBURG, J H, MAJERUS, T M, BERTRAND, D, ZAKHAROV, I A, BAUNGAARD, J, VÖLKL, W, STOUTHAMER, R and MAJERUS, M E, 1999. Invasion of one insect species, Adalia bipunctata, by two different male-killing bacteria. Insect molecular biology. 8(1), 133-9
  • GEOGHEGAN, I.E and MAJERUS, T.M.O. & MAJERUS, M.E.N., 1998. A record of a rare male of the parthogenetic parasitoid Dinocampus coccinellae (Schrank) (Hymenoptera: Braconidae). Ent. Rec. J. Var.. 110, 171-172
  • MAJERUS, T.M.O, MAJERUS, M.E.N, KNOWLES, B, WHEELER, J, BETRAND, D, KUZNETSOV, V.N and UENO, H. & HURST, G.D.D., 1998. Extreme variation in the prevalence of inherited male-killing microorganisms between three populations of Harmonia axyridis (Coleoptera: Coccinellidae). Heredity. 81, 683-691
  • GEOGHEGAN, I.E and MAJERUS, T.M.O. & MAJERUS, M.E.N., 1998. Differential parasitisation of adult and pre-imaginal Coccinella 7-punctata (Coleoptera: Coccinellidae) by Dinocampus coccinellae (Schrank) (Hymenoptera: Braconidae). Eur. J. Entomol.. 95, 571-579
  • MAJERUS, M.E.N. & MAJERUS, T.M.O., 1998. Mimicry among the ladybirds. Bull. Amat. Ent Soc.. 57, 126-140
  • MAJERUS, M.E.N, MAJERUS, T.M.O and BERTRAND, D. & WALKER, L.E., 1997. The geographic distributions of ladybirds (Coleoptera: Coccinellidae) in Britain (1984-1994). Ent. Mon. Mag.. 133, 181-203
  • MAJERUS, M.E.N and & MAJERUS, T.M.O., 1997. Cannibalism among ladybirds. Bull. Amat. Ent Soc.. 56, 235-248
  • HURST, G.D.D, HAMMARTON, T.M, BANDI, C, MAJERUS, T.M.O and BERTRAND, D. & MAJERUS, M.E.N., 1997. The diversity of inherited parasites of insects: the male-killing agent ot the ladybird beetle Coleomegilla maculata is a member of the Flavobacteria. Genet. Res.. 70, 1-6
  • MAJERUS, M.E.N. & MAJERUS, T.M.O., 1997. Predation of ladybirds by birds in the wild. Ent. Mon. Mag.. 133, 56-61 (In Press.)
  • MAJERUS, M.E.N. & MAJERUS T.M.O., 1997. Feeding of Lepidoptera on oak tree sap. Bull. Amat. Ent. Soc.. 56, 23-26
  • HURST, G D, HAMMARTON, T C, OBRYCKI, J J, MAJERUS, T M, WALKER, L E, BERTRAND, D and MAJERUS, M E, 1996. Male-killing bacterium in a fifth ladybird beetle, Coleomegilla maculata (Coleoptera:Coccinellidae). Heredity. 77 ( Pt 2), 177-85
  • MAJERUS, M.E.N. & MAJERUS, T.M.O., 1996. Ladybird population explosions. Brit. J. Ent. Nat. Hist.. 9, 65-76
  • MADUEÑO, E, PAPAGIANNAKIS, G, RIMMINGTON G, SAUNDERS, R.D.C, SAVAKIS, C, SIDÉN-KIAMOS, I, SKAVDIS, G, SPANOS, L, TREANEAR, J, ADAM, P, ASHBURNER, M, BENOS, P, BOLSHAKOV, V.N, COULSON, D, GLOVER, D. M, HERRMANN, S, KAFATOS, F. C, LOUIS, C and MAJERUS, T. AND MODOLELL, J, 1995. A physical map of the X chromosome of Drosophila melanogaster: cosmid contigs and sequence tagged sites. Genetics. 139, 1631-1647
  • HURST, G.D.D, SHARPE, R.G, BROOMFIELD, A.H, WALKER, L.E, MAJERUS, T.M.O and ZAKHAROV, I.A. & MAJERUS, M.E.N., 1995. Sexually transmitted disease in a promiscuous insect, Adalia bipunctata L.. Ecological Entomology. 20, 230-236
  • AMOS, W, BANCROFT, D, MAJERUS, T.M.O, BARRETT, J.A, DESPORTES, G and BLOCH, D. AND DOVER, G.A., 1992. A review of the breeding system and social structure in the Faeroese pilot whale as revealed by molecular techniques. Rep. int. Whal. Commn.. 14(special issue), 209-217
  • SIDÉN-KIAMOS, I, SAUNDERS, R D, SPANOS, L, MAJERUS, T, TREANEAR, J, SAVAKIS, C, LOUIS, C, GLOVER, D M, ASHBURNER, M and KAFATOS, F C, 1990. Towards a physical map of the Drosophila melanogaster genome: mapping of cosmid clones within defined genomic divisions. Nucleic Acids Research. 18(21), 6261-70
  • AMOS, B and MAJERUS, T.M.O. AND DOVER, G.A., 1989. Population characteristic patterns revealed in hypervariable DNA sequences. Rep. int. Whal. Commn.. 1-15

School of Life Sciences

University of Nottingham
Medical School
Queen's Medical Centre
Nottingham NG7 2UH

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