1. Centre for Biodiversity and Ecology Research; University of Waikato; Private Bag 3015; Hamilton; 3240; New Zealand
2. Department of Biology; Canadian Rivers Institute; University of Prince Edward Island; 550 University Avenue; Charlottetown; PEI; C1A 4P3; Canada
3. Scion; Private Bag 3020; Rotorua; 3046; New Zealand