1 1Department of Biology, Geology and Environmental Science, University of Tennessee at Chattanooga, 615 McCallie Avenue, 37403 Chattanooga, TN USA.
2 2Hubbard Center for Genome Studies, Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, 35 Colovos Road, 03824 Durham, NH USA.
3 3Department of Mathematics, Plymouth State University, MSC29, 17 High Street, 03264 Plymouth, NH USA.
5 5Dipartimento di Medicina Veterinaria, University of Sassari, via Muroni 25, 07100 Sassari, Italy.
6 Departmento de Sistemática y Ecología Acuática, El Colegio de la Frontera Sur, Unidad Chetumal, Av. Centenario Km. 5.5 Chetumal Quintana Roo, 77014 Chetumal, Mexico.
7 7Centro de Estudos do Mar, Universidade Federal do Paraná, Av. Beira-Mar, s/n, Pontal do Sul, PO Box 61, 83255-976 Pontal do Paraná, PR Brazil.
8 8Department of Invertebrate Zoology, Smithsonian National Museum of Natural History, 10th St. & Constitution Ave NW, 20560 Washington, DC, USA.
9 9Department of Biological Science, University of Massachusetts Lowell, Olsen Hall 414, 198 Riverside St., 01854 Lowell, MA USA.
10 10Department of Biology, Ludwig-Maximilians-University of Munich, Großhaderner Str. 2, 82152 Planegg-Martinsried, Munich Germany.
11 11Swedish Museum of Natural History, POB 5007, SE-104 05 Stockholm, Sweden.
12 12Department of Life Sciences, University of Modena & Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy.