
Assoc/Prof Jonathan Evans
Associate Professor/QEII Fellow
Key research
- Sexual selection in freshwater fishes: I use freshwater fishes as model systems to study sexual selection. Projects focus on genetic compatibility, sexual conflict, sperm competition and post-mating female choice.
- Sexual selection in marine broadcast spawners: This component of my work focuses on sperm competition, genetic compatibility and the benefits of polyandry in marine invertebrates. The work investigates compatibility at the gamete level and the interacting effects of male and female genotypes on fertilization success and offspring fitness.
Major research interests
- Behavioural ecology
- Evolutionary biology
Qualifications
BSc Liv. PhD St And.
Publications
27. Evans, J. P., Gasparini, C. & Pilastro, A. 2006 Female guppies shorten brood retention in response to predator cues. Behav. Ecol. Sociobiol. In press
26. Zajitschek, S. R. K., Evans, J. P. & Brooks, R. 2006 Independent effects of familiarity and mating preferences for ornamental traits on mating decisions in guppies. Behav. Ecol. 17: 911-916
25. Locatello, L., Rasotto, M. B., Evans, J. P. & Pilastro, A. 2006 Colourful male guppies produce faster and more viable sperm. J. Evol. Biol. 19: 1595-1602
24. Mariette, M., Kelley, J. L., Brooks, R. & Evans, J. P. 2006 The effects of inbreeding on male courtship and coloration in guppies. Ethology 112: 807-814
23. Marshall, D. J. & Evans, J. P. 2005 Does egg competition occur in marine broadcast-spawners? J. Evol. Biol 18: 1244-1252
22. Ojanguren, A. F., Evans, J. P. & Magurran, A. E. 2005 Multiple mating influences offspring size in guppies. J. Fish Biol. 67: 1184-1188
21. Marshall, D. J. & Evans, J. P. 2005 The benefits of polyandry in the free-spawning polychaete Galeolaria caespitosa. J. Evol. Biol. 18: 735-741
20. Evans, J. P. & Marshall, D. J. 2005 Male-by-female interactions influence fertilization success and mediate the benefits of polyandry in the sea urchin Heliocidaris erythrogramma. Evolution 59: 106-112.
19. Evans, J. P., Kelley, J. L., Bisazza, A., E. Finazzo & Pilastro, A. 2004 Sire attractiveness influences offspring performance in guppies. Proc. R. Soc. Lond. B 271: 2035-2042
18. Evans, J. P., Bisazza, A. & Pilastro, A. 2004 Female mating preferences for colourful males in a population of guppies subject to high predation. J. Fish Biol. 65: 1154-1159
17. Marshall, D. J., Steinberg, P. D. & Evans, J. P. 2004 The early sperm gets the good egg: mating order effects in free spawners Proc. R. Soc. Lond. B 271: 1585-1589
16. Pilastro, A. Simonato, M., Bisazza, A. & Evans, J. P. 2004 Cryptic female preference for colorful males in guppies. Evolution 58: 665¬-669
15. Evans, J. P., Zane, L., Francescato, S. & Pilastro, A. 2003. Directional postcopulatory sexual selection revealed by artificial insemination. Nature 421: 360-363
14. Evans, J. P., Pilastro, A. & Ramnarine, I. W. 2003. Sperm transfer through forced matings and its evolutionary implications in natural guppy (Poecilia reticulata) populations. Biol. J. Linn. Soc. 78: 605-612
13. Evans, J. P., Pierotti, M. & Pilastro A. 2003. Male mating behavior and ejaculate expenditure under sperm competition risk in the eastern mosquitofish. Behav. Ecol. 14: 268-273
12. Kelley, J. L., Evans J. P., Ramnarine, I. W. & Magurran, A. E. 2003. Back to school: can antipredator behaviour in guppies be enhanced through social learning? Anim. Behav. 65: 655-662
11. Evans, J. P., Kelley, J. L., Ramnarine, I. W. & Pilastro, A. 2002. Female behaviour mediates male courtship under predation risk in the guppy (Poecilia reticulata). Behav. Ecol. Sociobiol. 52: 496-502
10. Pilastro, A., Evans, J. P., Sartorelli, S. & Bisazza, A. 2002. Male phenotype predicts insemination success in guppies. Proc. R. Soc. Lond. B 269: 1325-1330
9. Evans, J. P., Pitcher, T. E. & Magurran, A. E. 2002. The ontogeny of courtship, colour and sperm production in male guppies (Poecilia reticulata). J. Fish Biol. 60: 495-498
8. Evans, J. P. & Magurran, A. E. 2001. Patterns of sperm precedence and predictors of paternity in the Trinidadian guppy. Proc. R. Soc. Lond. B 268: 719-724
7. Pitcher, T. E. & Evans, J. P. 2001. Male phenotype and sperm number in the guppy (Poecilia reticulata). Can. J. Zool. 79: 1891-1896
6. Evans, J. P. & Magurran, A. E. 2000. Multiple benefits of multiple mating in guppies. Proc. Natl. Acad. Sci. USA 76: 10074-10076
5. Geffen, A. J. & Evans, J. P. 2000. Sperm traits and fertilization success of male and sex-reversed female rainbow trout (Oncorhynchus mykiss). Aquaculture 182: 61-72
4. Evans, J. P. & Magurran, A. E. 1999. Geographic variation in sperm production by Trinidadian guppies. Proc. R. Soc. Lond. B B 266: 2083-2087
3. Evans, J. P. & Magurran, A. E. 1999. Male mating behaviour and sperm production characteristics under varying sperm competition risk in guppies. Anim Behav. 58: 1001-1006
2. Evans, J. P. & Geffen, A. J. 1998. Male characteristics, sperm traits and reproductive success in winter-spawning Celtic Sea Atlantic herring, Clupea harengus. Mar. Biol. 132: 179-186
1. Matthews, I. M., Evans, J. P. & Magurran, A. E. 1997. Male display rate reveals ejaculate characteristics in the Trinidadian guppy Poecilia reticulata. Proc. R. Soc. Lond. B 264: 695-700
Funding received
2007 ARC: Discovery grant (with Garcia-Gonzalez)
2006 ARC: Discovery grant & QEII Fellowship
2006 UWA: Research Grant
2003 ARC: Discovery grant & APD Fellowship
2002 Association for the Study of Animal Behaviour: Research Grant
2001 European Commission: Research Grant & Marie Curie Fellowship
2000 Fisheries Society of the British Isles: Small Research Grant
Teaching
Teach components of Behavioural Ecology 304
Research profile