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RECENT STRANDINGS OF ROUGH‐TOOTHED DOLPHINS ( STENO BREDANENSIS )ON THE OREGON and WASHINGTON COASTS
Author(s) -
Ferrero Richard C.,
Hodder Janet,
Cesarone Jack
Publication year - 1994
Publication title -
marine mammal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.723
H-Index - 78
eISSN - 1748-7692
pISSN - 0824-0469
DOI - 10.1111/j.1748-7692.1994.tb00397.x
Subject(s) - marine mammal , library science , geography , center (category theory) , fishery , archaeology , biology , computer science , chemistry , crystallography
Repeated attempts to return the animals to the ocean were not successful. One dolphin, a 219-cm female, died approximately 36 h after stranding and the other, a 209-cm male, was euthanized shortly thereafter. The third dolphin, a 192-cm male, was recovered dead on 4 October 1992 on Washington Long Beach peninsula approximately 2 km north of Ocean Park, Pacific County (46 124 Previous records of rough-toothed dolphin sightings or strandings in the coastal waters of the northeastern Pacific are rare. Orr (195 1) reported a single weathered skull from Marin County, California and Balcomb (1980) noted a stranded female on the outer coast of Washington in 1980. Rough-toothed dolphins are considered a warm-water pelagic inhabitant, occurring in low densities throughout the eastern tropical Pacific Ocean where surface water temperatures are generally above 25°C (Perrin and Walker 1975, Leatherwood et al. 1982). Sea surface temperatures off southern Oregon were 8-9% in January 199 1, and 11-12°C off Washington in October 1992 (Anonymous 1991, 1992). Necropsies were performed on all three animals; gross examination of internal organs, muscles, nasal passageways, and middle ear cavities revealed no irregularities in the Oregon animals. The Washington animal ’ s