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Dr Sheri Johnson

Email sheri.johnson@otago.ac.nzSheri_Johnson

Phone 64-3-479-7929

Teaching

    

Research Interests

  • Sexual Selection
  • Mating system evolution
  • Alternative reproductive tactics
  • Sperm Biology
  • Male Aging
  • Epigenetics

Postgraduate Students

Blair Balsom (MSc Zoology), Reproduction/development of NZ katipo spider. Supervisors (Johnson, Van Heezik, Vink)

Jordan Aria Housiaux (MSc Marine Sciences), Ecology of sevengill sharks using mark/recapture and connectivity analyses. Supervisors (Rayment, Hepburn, Johnson)

Hilary Thomson (Honours Zoology), Early life experience effects in triplefin fishes. Supervisor (Johnson)

Benedikt Holtmann (PhD Zoology), Animal personality and social networks in a species with variable mating systems, the Dunnock (Prunella modularis). Supervisors (Nakagawa, Robertson, Johnson)

Carlos Lara Vasquez (PhD Zoology), Immunity, quality, and fitness in a bird with a variable mating system. Supervisors (Nakagawa, Robertson, Johnson)

The University of Otago offers PhD scholarships to candidates with excellent academic records (irrespective of nationality). Please feel free to contact me if you are interested my research and would like to do your PhD in New Zealand. More information can be found on the Scholarships page.

Links

Google scholar profile

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Publications

Senior, A. M., Johnson, S. L., & Nakagawa, S. (2016). Sperm traits of masculinized fish relative to wild-type males: A systematic review and meta-analyses. Fish & Fisheries, 17(1), 143-164. doi: 10.1111/faf.12096

Holtmann, B., Grosser, S., Lagisz, M., Johnson, S. L., Santos, E. S. A., Lara, C. E., Robertson, B. C., & Nakagawa, S. (2016). Population differentiation and behavioural association of the two 'personality' genes DRD4 and SERT in dunnocks (Prunella modularis). Molecular Ecology, 25(3), 706-722. doi: 10.1111/mec.13514

Brockmann, H. J., Johnson, S. L., Smith, M. D., & Sasson, D. (2015). Mating tactics of the American horseshoe crab (Limulus polyphemus). In R. H. Carmichael, M. L. Botton, P. K. S. Shin & S. G. Cheung (Eds.), Changing global perspectives on horseshoe crab biology, conservation and management. (pp. 321-351). Cham, Switzerland: Springer. doi: 10.1007/978-3-319-19542-1_19

Vasquez, M. C., Johnson, S. L., Brockmann, H. J., & Julian, D. (2015). Nest site selection minimizes environmental stressor exposure in the American horseshoe crab, Limulus polyphemus (L.). Journal of Experimental Marine Biology & Ecology, 463, 105-114. doi: 10.1016/j.jembe.2014.10.028

Sasson, D. A., Johnson, S. L., & Brockmann, H. J. (2015). Reproductive tactics and mating contexts affect sperm traits in horseshoe crabs (Limulus polyphemus). Behavioral Ecology & Sociobiology, 69(11), 1769-1778. doi: 10.1007/s00265-015-1989-7

Chapter in Book - Research

Brockmann, H. J., Johnson, S. L., Smith, M. D., & Sasson, D. (2015). Mating tactics of the American horseshoe crab (Limulus polyphemus). In R. H. Carmichael, M. L. Botton, P. K. S. Shin & S. G. Cheung (Eds.), Changing global perspectives on horseshoe crab biology, conservation and management. (pp. 321-351). Cham, Switzerland: Springer. doi: 10.1007/978-3-319-19542-1_19

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Journal - Research Article

Senior, A. M., Johnson, S. L., & Nakagawa, S. (2016). Sperm traits of masculinized fish relative to wild-type males: A systematic review and meta-analyses. Fish & Fisheries, 17(1), 143-164. doi: 10.1111/faf.12096

Holtmann, B., Grosser, S., Lagisz, M., Johnson, S. L., Santos, E. S. A., Lara, C. E., Robertson, B. C., & Nakagawa, S. (2016). Population differentiation and behavioural association of the two 'personality' genes DRD4 and SERT in dunnocks (Prunella modularis). Molecular Ecology, 25(3), 706-722. doi: 10.1111/mec.13514

Vasquez, M. C., Johnson, S. L., Brockmann, H. J., & Julian, D. (2015). Nest site selection minimizes environmental stressor exposure in the American horseshoe crab, Limulus polyphemus (L.). Journal of Experimental Marine Biology & Ecology, 463, 105-114. doi: 10.1016/j.jembe.2014.10.028

Sasson, D. A., Johnson, S. L., & Brockmann, H. J. (2015). Reproductive tactics and mating contexts affect sperm traits in horseshoe crabs (Limulus polyphemus). Behavioral Ecology & Sociobiology, 69(11), 1769-1778. doi: 10.1007/s00265-015-1989-7

Flynn, T., Signal, B., Johnson, S. L., & Gemmell, N. J. (2015). Mitochondrial genome diversity among six laboratory zebrafish (Danio rerio) strains. Mitochondrial DNA. Advance online publication. doi: 10.3109/19401736.2015.1089536

Johnson, S. L., Dunleavy, J., Gemmell, N. J., & Nakagawa, S. (2015). Consistent age-dependent declines in human semen quality: A systematic review and meta-analysis. Ageing Research Reviews. doi: 10.1016/j.arr.2014.10.007

Yund, P. O., Collins, C., & Johnson, S. L. (2015). Evidence of a Native Northwest Atlantic COI haplotype clade in the cryptogenic colonial ascidian Botryllus schlosseri. Biological Bulletin, 228(3), 201-216.

Johnson, S. L., Villarroel, M., Rosengrave, P., Carne, A., Kleffmann, T., Lokman, P. M., & Gemmell, N. J. (2014). Proteomic analysis of Chinook salmon (Oncorhynchus tshawytscha) ovarian fluid. PLoS ONE, 9(8), e104155. doi: 10.1371/journal.pone.0104155

Johnson, S. L., & Brockmann, H. J. (2013). Parental effects on early development: Testing for indirect benefits of polyandry. Behavioral Ecology, 24(5), 1218-1228. doi: 10.1093/beheco/art056

Sasson, D. A., Johnson, S. L., & Brockmann, H. J. (2012). The role of age on sperm traits in the American horseshoe crab, Limulus polyphemus. Animal Behaviour, 84(4), 975-981. doi: 10.1016/j.anbehav.2012.07.023

Johnson, S. L., & Gemmell, N. J. (2012). Are old males still good males and can females tell the difference?: Do hidden advantages of mating with old males off-set costs related to fertility, or are we missing something else? BioEssays, 34(7), 609-619. doi: 10.1002/bies.201100157

Johnson, S. L., & Brockmann, H. J. (2012). Alternative reproductive tactics in female horseshoe crabs. Behavioral Ecology, 23(5), 999-1008. doi: 10.1093/beheco/ars063

Brockmann, H. J., & Johnson, S. L. (2011). A long-term study of spawning activity in a Florida Gulf coast population of horseshoe crabs (Limulus polyphemus). Estuaries & Coasts, 34(5), 1049-1067. doi: 10.1007/s12237-011-9419-1

Johnson, S. L., & Brockmann, H. J. (2010). Costs of multiple mates: An experimental study in horseshoe crabs. Animal Behaviour, 80(5), 773-782. doi: 10.1016/j.anbehav.2010.07.019

Johnson, S. L., & Yund, P. O. (2009). Effects of fertilization distance on male gain curves in a free-spawning marine invertebrate: A combined empirical and theoretical approach. Evolution, 63(12), 3114-3123. doi: 10.1111/j.1558-5646.2009.00784.x

Johnson, S. L., & Yund, P. O. (2008). Mulitple paternity and subsequent fusion-rejection interactions in a kin-structured population. Marine Ecology Progress Series, 364, 129-134. doi: 10.3354/meps07500

Johnson, S. L., & Yund, P. O. (2007). Variation in multiple paternity in natural populations of a free-spawning marine invertebrate. Molecular Ecology, 16(15), 3253-3262. doi: 10.1111/j.1365-294X.2007.03366.x

Yund, P. O., Murdock, K., & Johnson, S. L. (2007). Spatial distribution of ascidian sperm: Two -dimensional patterns and short vs. time-integrated assays. Marine Ecology Progress Series, 341, 103-109.

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Conference Contribution - Published proceedings: Abstract

Johnson, S. (2012). Cryptic female choice in salmon: Does sperm motility require a female’s touch? Proceedings of the Centre for Reproduction and Genomics 4th Annual Research Colloquium. (pp. 8). Retrieved from http://www.otago.ac.nz/crg/news/colloquium/

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Awarded Doctoral Degree

Johnson, S. L. (2007). Mating system dynamics in a free-spawning colonial ascidian (PhD). University of Maine, Orono, ME.

More publications...