Ophelia (1992)
Aerial surveys covering 5117 linear kilometers were conducted at 91 and 183 m altitude under optimal sighting conditions in an area north of Fyn, Denmark, and in the Bay of…
Reproduction and reproductive seasonality in Danish harbour porpoises, Phocoena phocoena
Sørensen, Thomas Buus; Kinze, Carl Christian
Ophelia (1994)
The reproduction and reproductive seasonality of 365 Danish harbour porpoises (Phocoena phocoena (L.)) incidentally caught in various gill nets or stranded, was studied. The animals were collected from all Danish…
Functional morphology and homology in the odontocete nasal complex: Implications for sound generation
Cranford, T. W.; Amundin, M.; Norris, K. S.
Journal of Morphology (1996)
The site and physiologic mechanism(s) responsible for the generation of odontocete biosonar signals have eluded investigators for decades. To address these issues we subjected postmortem toothed whale heads to interrogation…
Skin surface temperature changes in a harbour porpoise (Phocoena phocoena) while on land
Kastelein, R. A.; Koene, P.; Nieuwstraten, S. H.; Labberté, S.
The Biology of the Harbour Porpoise (1997)
Surface temperatures were taken once every minute for 10 minutes in 10 places on the skin of a juvenile harbour porpoise with a radiation thermometer, immediately after the animal had…
An environmental index for habitat utilization by female harbour porpoises with calves near Deer Island, Bay of Fundy
Smith, Gary J. D.; Gaskin, David E.
Ophelia (1983)
The Bay of Fundy is a known area of concentration of Phocoena phocoena during the summer months. In this study, 698 females with calves and 5 473 porpoises of other…
Energy budget of a small cetacean, the harbour porpoise, Phocoena phocoena (L.)
Yasui, W. Y.; Gaskin, D. E.
Ophelia (1986)
The objective of this study was to assemble the components of an energy budget for the harbour porpoise in the western Bay of Fundy, Canada. The annual energetic requirements for…
Morphometric and meristic comparisons of skulls of harbour porpoise Phocoena phocoena (L.) from the North Atlantic and North Pacific
Yurick, Douglas B.; Gaskin, David. E.
Ophelia (1987)
Highly significant (α = 0.01) differences in analysis of 473 skulls of harbour porpoises indicate separate eastern Pacific, western Atlantic, and eastern Atlantic populations. Including the isolated population in the…
Trends in harbour porpoise abundance off central California, 1986-95: Evidence for interannual changes in distribution?
Forney, K. A.
Journal of Cetacean Research and Management (1999)
This paper presents an updated analysis of trends in the abundance of harbour porpoise, Phocoena phocoena, in central and northern California, for the period 1986-95. The most recent survey effort…
Bycatches of harbour porpoises (Phocoena phocoena L.) in Danish set-net fisheries
Vinther, M.
Journal of Cetacean Research and Management (1999)
Data on bycatch of harbour porpoise (Phocoena phocoena L.) in the commercial Danish set-net fisheries were sampled from 5,591km nets in the period 1992 to 1998 using independent observers. A…
Genetic population structure of harbour porpoises (Phocoena phocoena) in the North Sea and Norwegian waters
Tolley, K. A.; Rosel, P. E.; Walton, M.; Bjorge, A.; Oien, N.
Journal of Cetacean Research and Management (1999)
The harbour porpoise (Phocoena phocoena) is subject to a high rate of incidental mortality in fisheries worldwide and, in some areas, these rates are sufficiently high to warrant concern over…