Report of the International Whaling Commission (1994)
Harbor porpoises (Phocoena phocoena) have been killed in gillnets set for halibut in central California since at least 1969. In the Monterey Bay area (Pigeon Pt. to Pt. Sur), past…
Cetaceans of the northern Gulf of California: Distribution, occurrence, and relative abundance
Silber, Gregory K.; Newcomer, Michael W.; Silber, Patricia C.; Perez-Cortes M., Hector; Ellis, Graeme M.
Marine Mammal Sci (1994)
A total of 1,715 km of boat-based surveys and 1,521 km of aircraft-based surveys was conducted from 1986–1989 to assess the distribution, relative abundance, and ecological relationships of cetaceans in…
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…
Bycatch and bycatch reduction of the harbour porpoise (Phocoena phocoena) in Danish waters
Lowry, N.; Teilmann, J.
Report of the International Whaling Commission (1994)
The harbour porpoise (Phocoena phocoena) is the only cetacean incidentally caught in significant numbers by the Danish fishing fleet and there is some concern that the populations in Danish waters…
Preliminary winter abundance estimates for cetaceans along the California coast based on a 1991 aerial survey
Forney, K. A.; Barlow, J.
Report of the International Whaling Commission (1993)
We present the results of an aerial line transect census of cetaceans along the California coast during March and April 1991. This survey was the first of two aerial surveys…
Cytoarchitectonic studies of the cerebral cortex of the harbour porpoise, Phocoena phocoena (Linne, 1758)
Behrmann, G.
Investigations on Cetacea (1993)
The olfactory system of the harbour porpoise is reduced but has a function. The visual system of the harbour porpoise is badly developed, and its inferior to the one of…
External morphology of Dall’s porpoise (Phocoenoides dalli): Growth and sexual dimorphism
Amano, Masao; Miyazaki, Nobuyuki
Canadian Journal of Zoology (1993)
We studied development and sexual dimorphism in external measurements of Dall's porpoises (Phocoenoides dalli) from the northwestern North Pacific. Relative rates of increase in the measurements of the head and…
Histological investigations on the thyroid glands of marine mammals (Phoca vitulina, Phocoena phocoena) and the possible implications of marine pollution
Schumacher, U.; Zahler, S.; Horny, H.-P.; Heidemann, G.; Skirnisson, K.; Welsch, U.
Journal of Wildlife Diseases (1993)
In 1988 and 1989, thousands of harbor seals (Phoca vitulina) died in the North Sea from phocine distemper infection. The morphology of thyroid glands from 40 harbor seals found dead…
Evidence of Poxvirus in dusky dolphin (Lagenorhynchus obscurus) and Burmeister’s porpoise (Phocoena spinipinnis) from coastal Peru
Van Bressem, Marie-Françoise; Van Waerebeek, Koen; Reyes, Julio C.; Dekegel, Daniel; Pastoret, Paul-Pierre
Journal of Wildlife Diseases (1993)
In 1990, 74 dusky dolphins (Lagenorhynchus obscurus) and 10 Burmeister's porpoises (Phocoena spinipinnis) were examined for the presence of hyperpigmented marks and pinhole lesions on the skin (tattoo lesions) at…
Growth and reproduction of three populations of finless porpoise, Neophocaena phocaenoides, in Chinese waters
Gao, Anli; Zhou, Kaiya
Aquatic Mammals (1993)
We have 189 specimens available for this work. One-hundred and sixty-seven specimens from the Yangtze, Yellow Sea and South China Sea populations were aged and used in studying the growth…