Biological Conservation (1994)
A global review of mortality of porpoises in gillnet fisheries indicates that individuals of all six species become entangled and die in gillnets. Harbor porpoises Phocoena phocoena are taken throughout…
The potential for reducing entanglement of dolphins and porpoises with acoustic modifications to gillnets
Dawson, S. M.
Report of the International Whaling Commission (1994)
To reduce incidental catch of cetaceans in gillnets, two forms of acoustic modifications are reviewed here; one to make gillnets more reflective to cetacean sonar, and another using active sound…
A review of cetacean and pinniped mortality in coastal fisheries along the west coast of the USA and Canada and the east coast of the Russian Federation
Barlow, J.; Baird, R. W.; Heyning, J. E.; Wynne, K.; Manford, A. M. II; Lowry, L. F.; Hanan, D.; Sease, J.; Burkanov, V. N.
Report of the International Whaling Commission (1994)
Many passive net fisheries exist along the Pacific coastlines of the USA (California, Oregon, Washington and Alaska), Canada (British Columbia) and the Russian Federation. Some incidental marine mammal mortality occurs…
An investigation into the causes of an unusual porpoise (Phocoena phocoena and Phocoenoides dalli) mortality event in southern British Columbia
Baird, R. W.; Guenther, T. J.; Lewis, R. J.; McAdie, M. L.; Cornish, T. E.
Report No. IIHS3-050 (1994)
Cetacean strandings have typically been classified into two types: 1) single strandings (including a mother/offspring pair); and 2) mass strandings. Singly stranded cetaceans have been reported world-wide wherever populations of…
A brief review of stock identity in small marine cetaceans in relation to assessment of driftnet mortality in the north Pacific
Perrin, W. F.; Brownell, R. L. Jr.
Report of the International Whaling Commission (1994)
Dolphins of several species are killed incidentally in driftnet fisheries on the high seas in the North Pacific. Information on stock identity, necessary for assessment and management of the dolphin…
Estimates of incidental marine mammal bycatch in California gillnet fisheries for July through December, 1990
Lennert, C.; Kruse, S.; Beeson, M.; Barlow, J.
Report of the International Whaling Commission (1994)
Data are reported on marine mammal mortality collected from California's gillnet fisheries for California halibut and Pacific angel shark (set net) and swordfish and pelagic sharks (driftnet) during the first…
Phylogenetic relationships among the true porpoises (Cetacea: Phocoenidae)
Rosel, P; Haygood, M; Perrin, W
Molecular Phylogenetics and Evolution (1995)
Portions of the cytochrome b gene and control region of the mitochondrial DNA molecule were sequenced to investigate systematic relationships among the six extant species of true porpoises, (Cetacea: Phocoenidae).…
Trends in abundance of Dall’s porpoise in the western north Pacific, 1979 to 1989
Turnock, B.J.; Buckland, S.T.
Report of the International Whaling Commission (1995)
Two density indices of Dall's porpoise abundance were estimated for the western North Pacific from 1979 to 1989. One index is the density of animals (number of animals per square…
The relationship between heart mass and body mass for three cetacean genera: Narrow allometry demonstrates interspecific differences
Ridgway, Sam H.; Kohin, Suzanne
Marine Mammal Sci (1995)
(...) Brody (1945) fitted an allometric equation to heart mass (kg) as a function of body mass (kg) for adult mammals ranging in body size from 0.01 to over 100,000…
Retinal ganglion cell size and distribution predict visual capabilities of Dall’s porpoise
Murayama, Tsukasa; Somiya, Hiroaki; Aoki, Ichiro; Ishii, Takeo
Marine Mammal Sci (1995)
The structure of the retina, the distribution of ganglion cells, and the extent of the tapetum lucidum were studied in Dall's porpoise (Phocoenoides dalli) with the aim of understanding the…