John M. Lawrence
John M. Lawrence
Professor
Contact
Office: SCA 132
Phone: 813/974-2549
Email:
Education
Ph.D., Stanford University, 1966.
Docteur honoris causa. Université de la Méditerranée (Aix-Marseille II), 2000
Visiting investigator: Israel, France, Kerguelen, Chile, Panama, Barbados, New Zealand, Australia, Marshall Islands
Research
Marine Biology, Ecology, Physiology
Ecological energetics, physiological ecology, reproductive biology, nutritional biology, echinoderm biology, aquaculture of sea urchins
As energy is limiting in biological systems, the way it is allocated to structures and functions is under selective pressure. The energetic approach provides a way to link ecological, physiological, and nutritional studies. This has become a major basis for research in my laboratory, using echinoderms as the group for investigation. This involves research at all levels of organization, in the laboratory and in the field. We are attempting to understand the ways individuals of different species with different life-history strategies allocate material and energy to survival, growth, and reproduction. The ways in which physical (temperature, salinity, pollutants) and biological (food, sublethal predation) variables affect allocation provide an interesting aspect of the studies. These studies have important implications for aquaculture of sea urchins.
Recent Publications
Lawrence, J.M. (Ed.) 2006. Edible sea urchins: biology and ecology, second edition. Elsevier Science Press. Lawrence, J.M. 2006.
Hammer, H., S. Watts, A. Lawrence, J. Lawrence, R. Desmond. 2006. The effect of dietary protein on consumption, survival, growth and production of the sea urchin Lytechinus variegatus. Aquaculture. 254: 483-495.
Hammer, H., B. Hammer, S. Watts, A. Lawrence, J. Lawrence. 2006. The effect of dietary protein and carbohydrate on the biochemical composition and gametogenic condition of the sea urchin. J. Exp. Mar. Biol. Ecol. 334: 109-121.
Hill, S.K., J.M. Lawrence. 2006. Interactive effects of temperature and nutritional condition on the energy budgets of the sea urchins Arbacia punctulata and Lytechinus variegatus (Echinodermata: Echinoidea). J. Mar. Biol. Ass. U.K. 886: 783-790.
Diaz-Guisado, D. C.F. Gaymer, K.B. Brokordt, J.M. Lawrence. 2006. Autotomy reduces feeding, energy storage and growth of the sea star Stichaster striatus. J. Exp. Mar. Biol. Ecol. 338: 73-80.
Lawrence, J.M. (Ed.) 2001. Edible sea urchins: biology and ecology. Elsevier Science Press. Lawrence, J.M. 2001.
Function of eponymous structures in echinoderms: a review. Canadian Journal of Zoology. 79, 1251-1264.
Lawrence, J.M., and J. Herrera 2000. Stress and deviant reproduction in echinoderms. Zoological Science. 39, 151-171.
Lawrence, J.M. 2000. Conflict between somatic and gonadal growth in sea urchins. http://crdpm.cus.ca/OURSIN/rapide.htm