1 Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB, Canada E3B 4Z7; and Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB, Canada E3B 5A3.
2 Department of Biology, University of New Brunswick, P.O. Box 4400, Fredericton, NB, Canada E3B 5A3.
3 Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB, Canada E3B 4Z7.