title: Histopathological muscle findings may be essential for a definitive diagnosis of suspected sharp trauma associated with ship strikes in stranded cetaceans.
abstract: Ship strikes are a major issue for the conservation of may cetacean species. Certain gross and microscopic criteria have been previously reported for establishing a diagnosis of death due to ship strikes in these animals. However, some ship-strike injuries may be masked by advanced carcass decomposition and may be undetectable due to restricted access to the animals. In this report we describe histopathological muscular findings in 13 cetaceans with sharp trauma from ship strikes as the cause of death. Skeletal muscle samples were taken from the incision site and from the main locomotor muscle, the longissimus dorsi, in areas not directly affected by the sharp injury. The microscopic findings in tissues from both sites mainly consisted of haemorrhages; oedema; flocculent, granular or/and hyalinised segmentary degeneration; contraction band necrosis; and discoid degeneration or fragmentation of myofibres. We propose that skeletal muscle histopathology provides evidence of ante-mortem injuries even if the sample was taken elsewhere in the carcass and not only within or adjacent to the sharp trauma site and despite the advanced decomposition of some of the carcasses. This method helps to establish the diagnosis of ship strike as the cause of death.
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Sierra
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Fernández
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Espinosa de los Monteros
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Arbelo
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Josué
authors.initials: J
authors.lastname: Díaz-Delgado
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Marisa
authors.initials: M
authors.lastname: Andrada
authors.affiliation: Unit of Histology and Veterinary Pathology, Institute for Animal Health, Veterinary School, University of Las Palmas de Gran Canaria, Arucas (Las Palmas), Canary Islands, Spain.
authors.forename: Pedro
authors.initials: P
authors.lastname: Herráez
mesh_terms: D000818:Animals; D002423:Cause of Death; D003247:Conservation of Natural Resources; D004289:Dolphins / Q000293:injuries*; D005260:Female; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000473:pathology*; D010341:Pathology, Veterinary; D012767:Ships; D014907:Whales / Q000293:injuries*