Find out more about the people behind Cawthron Institute.

Norman Ragg

Research Scientist – Shellfish Biology and Physiology


  • PhD (Animal Physiology). University of Canterbury, 2003
  • MSc (Shellfisheries/Biology/Culture). University of Wales, 1994
  • BSc (Hons, Marine Biology). University of Wales, 1992

Role at Cawthron

Norman leads the physiology team at Cawthron, drawing on a background of work in the aquaculture industry combined with training as a classical biologist focusing on physiology. This is brought to bear in a range of projects where the physiology of aquaculture species is a key issue, such as:

  • Quantifying stress and resilience in shellfish
  • Mitigating the effects of ocean acidification and warming: building resilience in the aquaculture industry
  • Identifying resource-efficient shellfish families for use in selective breeding
  • Optimising hatchery processes
  • Enhancing meat quality and yield through good harvest practice and transport technology

Technical skills, experience and interests

  • Introduction of physiological tools and scientific discipline to optimise the effectiveness of aquaculture research
  • Integration of selective breeding with physiological performance parameters
  • Climate change simulation and mitigation
  • Baseline biological description of novel aquaculture species
  • True sustainability in the primary industry, minimising or even eliminating net environmental impact while optimising productivity

Professional affiliations

  • Society for Experimental Biology
  • Malacological Society (London)
  • Royal Society of New Zealand
  • Australia – New Zealand Society for Comparative Biochemistry and Physiology
  • New Zealand Marine Sciences Society
  • Society for Integrative and Comparative Biology

View Norman's ResearchGate profile here

Publication links

+64 3 548 2319
[email protected]