1. Department of Functional Biology, University of Oviedo, 33006 Oviedo, Spain
2. Department of Environmental Genetics, Ecohydros, 39600 Maliaño, Spain
3. Veterinary Histology and Pathology, Atlantic Center for Cetacean Research, Institute of Animal Health and Food Safety (IUSA), Veterinary School, University of Las Palmas de Gran Canaria, 35001 Las Palmas, Spain
4. Cetaceans and Marine Research Institute of the Canary Islands (CEAMAR), 35509 Las Palmas, Spain