Dr Symon Dworjanyn

RESEARCH INTERESTS

I work in the fields of marine ecology and sustainable aquaculture. I attempt to apply the culturing skills developed in aquaculture research to explore marine ecological and evolutionary ideas and to apply ecological theory to advance the development of sustainable aquaculture practices. A current research focus is the effect of ocean acidification and warming on marine invertebrates. In this research I use ecological and evolutionary theory to predict the future impacts of marine climate change on marine invertebrates, and toidentify adaptation and mitigation strategies to limit ecosystem impacts. In the area of aquaculture I focus on sustainable sea urchin and seaweed culture. Other interests include seaweed and marine invertebrate chemical ecology and desert trophic ecology.

CURRENT GRANTS

Australian Competitive Grants

ARC Discovery 2011 - $378 000. DP110105298 Impact of climate change stressors on calcifying and non-calcifying marine life stages: predicting tipping points for persistence in a changing ocean. Byrne and Dworjanyn

ACIAR 2010 - $958 000. Improved seaweed culture and post harvest waste utilisation in South East Asia Dworjanyn et al.

Other Grants

NSW Environment research trust 2010 - $197 000. Multigenerational impact of climate change on marine life histories. Dworjanyn et al.

Flora foundation 2009 - $17 590. Green caviar and Sea grapes: Targeted cultivation of high values seaweeds from the genus Caulerpa. Paul et al.

PUBLICATIONS

Refereed Journal Articles

Submitted/In Press/Accepted/Revison Requested

Shawna A. Foo, Symon A. Dworjanyn, Alistair G. B. Poore and Maria Byrne Adaptive capacity of the sea urchin Centrostephanus rodgersii to ocean warming and ocean acidification: performance of early embryos Proceedings of the Royal Society B (invited resubmission Oct) (JIF 5.01)

Swanson, R.L., Byrne, M., Prowse TAA, Dworjanyn SA and Steinberg PD  Dissolved histamine - a potential habitat marker promoting settlement and metamorphosis in sea urchin larvae. Marine Biology (revision sent October 2011)

Seymour,, S, Paul, N.A., Dworjanyn, S.A.,, de Nys, R., Feeding preference and performance in the tropical sea urchin Tripneustes gratilla. Aquaculture (revision sent June)

2011

Mos, B, Cowden, K.L., Nielsen, S.J., and Dworjanyn, S.A.,2011 Do Cues Matter? Highly Inductive Settlement Cues Don't Ensure High Post-Settlement Survival in Sea Urchin Aquaculture. PLoS ONE 6 (12)e28054

Doo, S. S., Dworjanyn, S. A., Foo, S. A., Soars, N. A., and Byrne, M. Impacts of ocean acidification on development of the meroplanktonic larvalstage of the sea urchin Centrostephanus rodgersii. – ICES Journal of Marine Science,doi:10.1093/icesjms/fsr123

Letnic M and Dworjanyn S A. 2011 Does a top predator reduce the predatory impact of an invasive mesopredator on an endangered rodent? Ecography 34: 827-835 JIF 4.385, (ERA ranking: A) doi: 10.1111/j.1600-0587.2010.06516.

2010

Byrne M , Ho M, Wong E,. Soars N A, Selvakumaraswamy P, Shepard-Brennand H, Dworjanyn S A, and Davis A R. 2010 Unshelled abalone and corrupted urchins, development of marine calcifiers in a changing ocean. Proceedings of the Royal Society B doi:10.1098/rspb.2010.2404

H Sheppard-Brennand, N Soars, S A. Dworjanyn, A R. Davis and M Byrne. 2010 Impact of ocean warming and ocean acidification on larval development and calcification in the sea urchin Tripneustes gratilla PLoS One 5(6) e11372

Byrne,M; Soars, NA; Ho M A; Wong, E; McElroy, D; Selvakumaraswamy P; Dworjanyn S A; Davis A R 2010 Fertilization in a suite of marine invertebrates from SE Australia is robust to near-future ocean warming and acidification. Marine Biology 157(9) 2061-2069

Byrne M, Sours N, Selvakumaraswamy P, Dworjanyn S A. Davis A R 2010 Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities. Marine Environmental Research 69(4):234-239

2009

Byrne M, Ho M, Selvakumaraswamy P, Ngyuen H D, Dworjanyn S A. Davis A R. 2009 Temperature, but not pH, compromises sea urchin fertilisation and early development under near-future climate change scenarios. Proceedings of the Royal Society B 276:1883-1888

2008

Dworjanyn S A, and Pirozzi I. 2008 Induction of settlement in the sea urchin Tripneustes gratilla by macroalgae, biofilms and conspecifics: A role for bacteria? Aquaculture 274:268–274

Byrne M, Prowse T A A, Sewell M A, Dworjanyn S A, Williamson J E Vaitilingon D. (2008) Maternal provisioning for larvae and larval provisioning for juveniles in the toxopneustid sea urchin Tripneustes gratilla. Marine Biology 155:473-482

2007

Dworjanyn S A, Liu W, Heasman M, Pirozzi I. 2007 Improvement of artificial diets for the sea urchin Tripneustes gratilla by the addition of algae feeding stimulants. Aquaculture 273: 624-633

2006

Liu W, Heasman M, Simpson R, Dworjanyn S, Pirozzi I. 2006 Growth and feeding in juvenile triploid and diploid blacklip abalone, Haliotis rubra (Leach, 1814), at two temperatures. Aquaculture Nutrition 12 (6): 410-417

Dworjanyn S A, de Nys R, Steinberg PD. 2006 An antifouling role for algal marine secondary metabolites. Mar Ecol Prog Ser 318: 153-163

Dworjanyn SA, Wright JT, de Nys R, Steinberg PD. 2006 Cost of chemical defence in the red alga Delisea pulchra Oikos113 (1): 13-22

2005

Wright J T, Dworjanyn S A, Rodgers C N, Steinberg P D Williamson J E, Poore A GB. 2005 Density-dependant effects of sea urchin grazing: selective removal of species and alternative community states. Mar Ecol Prog Ser 298: 143-156

1999

Dworjanyn S A, de Nys R, Steinberg PD. 1999 Localisation and surface quantification of secondary metabolites in the red alga Delisea pulchra. Marine Biology 133:727-736

1998

de Nys R, Dworjanyn S A, Steinberg P D. 1998 A new method for determining surface concentrations of marine natural products on seaweeds. Mar Ecol Prog Ser 162:79-87

1995

de Nys R, Steinberg P D, Willemsen P, Dworjanyn S A, Gabelish C L, King R J. 1995 Broad spectrum effects of secondary metabolites from the red alga Delisea pulchra in antifouling assays. Biofouling 8: 259-271

Other

Kelly MS and Dworjanyn S A (2008) Review of the potential of seaweeds as biofuels in the UK. The Crown Estate.

Heasman M, Diggles B K, Hurwood D, Mather P, Pirozzi I, Dworjanyn S (2004) Paving the way for the continued rapid development of the flat oyster (Ostrea angassi) forming industry in New South Wales. NSW Fisheries Final Report Series No 66.

Updated: 18 April 2013