1. Laboratory of Marine Mollusks, Department of Aquaculture, Federal University of Santa Catarina, Rodovia Admar Gonzaga, 1346, Itacorubi, Florianópolis 88040-900, Santa Catarina, Brazil
2. Department of Fisheries and Wildlife and Coastal Oregon Marine Experiment Station, Hatfield Marine Science Center, Oregon State University, 2030 Marine Science Drive, Newport, OR 97365