1. Ellsworth Community College, 1100 College Avenue, Math and Science Room 114, Iowa Falls, IA 50126, USA
2. United States Department of Agriculture, Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research Center, North Dakota Field Station, Department of Biological Sciences, North Dakota State University, 1340 Bolley Drive, Fargo, ND 58102, USA
3. Department of Biological Sciences, North Dakota State University, 1340 Bolley Drive, 201 Stevens Hall, Fargo, ND 58102, USA