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Dr Sheri Johnson

Email sheri.johnson@otago.ac.nzSheri_Johnson

Phone 64-3-479-7929

Teaching

    

Research Interests

Behavioural Ecology, Evolutionary Ecology, Molecular Ecology, Ecological Genetics. Reproductive Biology, Environmental Epigenetics, Behavioural Genetics

I am a behavioural ecologist with broad interests in sexual selection, mating system evolution, sperm biology and the effects of human-induced change on the reproductive ecology of animals. Overall, my research programme investigates both genetic and environmental effects on behaviour and reproductive fitness. We currently use zebrafish, tree weta, and triplefins in our research, but I am open to working with different study systems.

Postgraduate Students

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.Current Students

Current Students
Alexandria Ragsdale (PhD Zoology), Do old males deliver the good epigenes? Supervisors: Johnson, Spencer, Hore

Yasmin Foster (PhD Zoology), Integrating genomic and epigenomic approaches for kakapo conservation. Supervisors: Robertson, Johnson

Mateus Detoni (PhD Zoology), Social wasp behavioural ecology and genomics. Supervisors: Jandt, Johnson

Meg Kelly (MSc Zoology), TBA - tree weta and behavioural ecology. Supervisors: Johnson, Priscilla Wehi

Niki Chandura (PGDipSci, Genetics), Transgenerational effects of hypoxia in zebrafish. Supervisor: Johnson

Fletcher Munsterman (MSc, Zoology), TBA - triplefin parental care (starts July 2019). Supervisor: Johnson


Previous Students
Adele Parli (MSc Zoology), Behavioural effects of brodifacoum bait exposure on Wellington tree weta. Supervisors: Johnson, Priscilla Wehi, Anne Besson

Hilary Thomson (MSc Zoology), Repeatability of zebrafish personality traits. Supervisor: Johnson

Simon Lamb (MSc Zoology), Effects of atrazine on transgenerational epigenetics in zebrafish. Supervisor: Johnson

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

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

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

Links

Google scholar profile

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Publications

Johnson, S. L., Zellhuber-McMillan, S., Gillum, J., Dunleavy, J., Evans, J., Nakagawa, S., & Gemmell, N. J. (2018). Evidence that fertility trades off with early offspring fitness as males age. Proceedings of the Royal Society B, 285(1871), 20172174. doi: 10.1098/rspb.2017.2174

Lamb, S. D., Taylor, H. R., Holtmann, B., Santos, E. S. A., Tamayo, J. H., Johnson, S. L., Nakagawa, S., & Lara, C. E. (2017). Coprophagy in Dunnocks (Prunella modularis): A frequent behavior in females, infrequent in males, and very unusual in nestlings. Wilson Journal of Ornithology, 129(3), 615-620. doi: 10.1676/16-059.1

Gessner, C., Johnson, S. L., Fisher, P., Clarke, S., Rutherford, K., Symonds, J., & Gemmell, N. J. (2017). Male-female relatedness at specific SNP-linkage groups influences cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha). Proceedings of the Royal Society of London: Series B, 284(1859), 20170853. doi: 10.1098/rspb.2017.0853

Ragsdale, A., Hore, T., & Johnson, S. (2017). DNA methylation and aging in zebrafish. Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 531. Retrieved from http://gen2017.w.events4you.currinda.com

Johnson, S. L., & Lamb, S. D. (2017). Intergenerational effects of atrazine exposure suring juvenile development in zebrafish. Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 704. Retrieved from http://gen2017.w.events4you.currinda.com

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

Johnson, S. L., Zellhuber-McMillan, S., Gillum, J., Dunleavy, J., Evans, J., Nakagawa, S., & Gemmell, N. J. (2018). Evidence that fertility trades off with early offspring fitness as males age. Proceedings of the Royal Society B, 285(1871), 20172174. doi: 10.1098/rspb.2017.2174

Lamb, S. D., Taylor, H. R., Holtmann, B., Santos, E. S. A., Tamayo, J. H., Johnson, S. L., Nakagawa, S., & Lara, C. E. (2017). Coprophagy in Dunnocks (Prunella modularis): A frequent behavior in females, infrequent in males, and very unusual in nestlings. Wilson Journal of Ornithology, 129(3), 615-620. doi: 10.1676/16-059.1

Gessner, C., Johnson, S. L., Fisher, P., Clarke, S., Rutherford, K., Symonds, J., & Gemmell, N. J. (2017). Male-female relatedness at specific SNP-linkage groups influences cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha). Proceedings of the Royal Society of London: Series B, 284(1859), 20170853. doi: 10.1098/rspb.2017.0853

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

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

Flynn, T., Signal, B., Johnson, S. L., & Gemmell, N. J. (2016). Mitochondrial genome diversity among six laboratory zebrafish (Danio rerio) strains. Mitochondrial DNA, 27(6), 4364-4371. doi: 10.3109/19401736.2015.1089536

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

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., 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, 19, 22-33. doi: 10.1016/j.arr.2014.10.007

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

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

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

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

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.

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

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Journal - Research Other

O'Dea, R. E., Noble, D. W. A., Johnson, S. L., Hesselson, D., & Nakagawa, S. (2016). The role of non-genetic inheritance in evolutionary rescue: Epigenetic buffering, heritable bet hedging and epigenetic traps. Environmental Epigenetics, 2(1), dvv014. doi: 10.1093/eep/dvv014

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Conference Contribution - Published proceedings: Abstract

Ragsdale, A., Hore, T., & Johnson, S. (2017). DNA methylation and aging in zebrafish. Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 531. Retrieved from http://gen2017.w.events4you.currinda.com

Thomson, H., & Johnson, S. (2017). Genetic effects on social isolation anxiety in zebrafish (Danio rerio). Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 539. Retrieved from http://gen2017.w.events4you.currinda.com

Johnson, S. L., & Lamb, S. D. (2017). Intergenerational effects of atrazine exposure suring juvenile development in zebrafish. Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 704. Retrieved from http://gen2017.w.events4you.currinda.com

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.

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