Mikio Moriyasu

Head, Snow Crab Section
Fisheries and Oceans Canada

Current research and/or projects

Mikio is a research scientist and head of Snow Crab Section at Gulf Fisheries Centre in Moncton N.B. He has been studying ecology, physiology and biology of marine crustacean species (namely brachyuran species such as snow crab, toad crab, rock crab, lady crab and green crab) and also stock assessment of snow crab in the southern Gulf of St. Lawrence (Areas 12, E, F and 19).

His principal research objectives are to clarify the mechanism of population fluctuation of snow crab in relation to the commercial exploitation involving a vast research field from ultramicroscopic study to population dynamics. His section, composed of highly motivated dynamic employees, has been conducting annual bottom trawl survey, field research work, in-season fisheries monitoring and laboratory investigations. As a member of COOGER, he is also leading the project of possible effects of seismic survey on marine invertebrates (namely snow crab) in collaboration with various institutions.

Research and/or project statements

Education and awards

Fishery Biology (Master of Science) , Tokyo University of Marine Science & Technology, Japan, 1977

PhD (Aquatic Ecology), University of Sciences and Technics of Languedoc (Montpellier II), France, 1981

Key publications

  1. Siddeek, M.S.M., Wade, E. and Moriyasu, M. 2008. Proposed harvest control rule for managing the snow crab stock in the southern Gulf of St. Lawrence, Canada. Fisheries Research, 95: 268-279.
  2. Sevigny, J.-M., Sainte-Marie, B., Brêthes, J.-C., Burmeister, A.D. and Moriyasu, M. 2008. Population genetic structure of the snow crab (Chionoecetes opilio). Canadian Journal of Fisheries and Aquatic Sciences, 65: 425-436.
  3. Moriyasu, M., E. Wade, M. Hébert et M. Biron, 2008. Review of the survey and analytical protocols used for estimating abundance indices of southern Gulf of St. Lawrence snow crab from 1988 to 2006. Canadian Science Advisory Secretariat, Research Document, 2008/069, 34 p.
  4. Hébert, M., Wade, E., DeGrace, P., Belanger, P. and Moriyasu, M., 2008. The 2007 assessment of snow crab, Chionoecetes opilio, in the southern Gulf of St. Lawrence (Areas 12, 19, E and F). Canadian Science Advisory Secretariat, Research Document. 2008/040, 72 p.
  5. Biron, M., Ferron, C., and Moriyasu, M., 2008. Movement of adult male snow crab Chionoecetes opilio, in the southern Gulf of St. Lawrence and eastern Nova Scotia, based on tag-recapture experiment conducted between 1993 and 2003. Fishery research
  6. Audet, D., Miron, G. and Moriyasu, M., 2008. Biological characteristics of a newly established green crab (Carcinus maenas) population in the southern Gulf of St. Lawrence, Canada. Journal of Shellfish Research 27(2):427-441
  7. Hébert, M., Wade, E., Surette, T. and Moriyasu, M., 2007. The 2006 assessment of snow crab, Chionoecetes opilio, in the southern Gulf of St. Lawrence (Areas 12, 19, E and F). Canadian Science Advisory Secretariat, Research Document 2005/029
  8. Moriyasu, M., Hébert, M. and Wade, E. 2006. Protection of postmolt male snow crab (Chionoecetes opilio) in the southern Gulf of St. Lawrence: Strategy to avoid discarding mortality of future recruitment to the fishery. International Council for the Exploitation of the Sea, ICES CM/K:22
  9. Hébert, M., Wade, E., Surette, T. and Moriyasu, M., 2006. The 2005 assessment of snow crab, Chionoecetes opilio, in the southern Gulf of St. Lawrence (Areas 12, 19, E and F). Canadian Science Advisory Secretariat, Research Document, 2005/029
  10. Mirron, G., Audet, D., Landry, T. and Moriyasu, M., 2005. Predation potential of the invasive green crab (Carcinus maenas) and other common predators on commercial bivalve species found on Prince Edward Island. Journal of Shellfisheries Research, 24(2): 579-586
  11. Hébert, M., Wade, E., Surette, T., DeGrâce, P., Ruest, R. and Moriyasu, M., 2005. The 2004 assessment of snow crab, Chionoecetes opilio, in the southern Gulf of St. Lawrence (Areas 12, 19, E and F). Canadian Science Advisory Secretariat, Research Document 2005/029
  12. Caddy, J.F., Wade, E., Surette, T., Hebert, M. and Moriyasu, M., 2005. Using an empirical traffic light procedure for monitoring and forecasting in the Gulf of St. Lawrence fishery for the snow crab, Chionoecetes opilio. Fisheries Research, 76: 123-145.