Master's Thesis - San Jose State University (1995)
Boat and shore-based surveys were conducted from June to August 1991 and June to October 1992 to determine harbor porpoise distribution, density, abundance, and habitat use off the northern San…
Food habits of smaller marine mammals from northern California
Jones, R. E.
Proceedings of the California Academy of Sciences (1981)
General food habits are discussed for 11 species of small marine mammals beach-east in northern California. The collection method allowed tabulation only of the kinds, numbers, and percentages of fish,…
Proceedings of the International Harbour Porpoise Workshop
Bowen, D.; Brodie, P.; Conway, J.; Gearin, P.; Hammill, M.; Hood, C. C.; Kingsley, M.; Lesage, V.; Lien, J.; Metuzals, K.; Palka, D.; Potter, D.; Read, A.; Rosel, P.; Simon, P.; Stenson, G.
(2001)
Serious concerns have been raised regarding the status of the harbour porpoise populations in the North Atlantic and specifically for those inhabiting Atlantic Canadian waters. In 1991 harbour porpoise in…
Spatial and temporal distribution of harbour porpoises in relation to their prey
Sveegaard, S.
Doctoral Thesis - Aarhus Universitet (2011)
The population status of harbour porpoises has been of concern for several years due to anthropogenic influences, especially incidental bycatch in gillnet fisheries. Proper management of a wide-ranging species such…
Measurements and stomach contents of eleven delphinids from the northeast Pacific
Scheffer, Victor B.
The Murrelet (1953)
The writer has examined nine porpoises and two dolphins collected 1950-1952 along the west coast of North America between southern California and the Pribilof Islands, Alaska. Unless otherwise noted, the…
Observations of captive and wild cetaceans
Brown, David H.; Norris, Kenneth S.
Journal of Mammalogy (1956)
(...) During the first months of operation (March, 1954 to Sept. 1955) of the new oceanarium, Marineland of the Pacific, we have had numerous opportunities to observe the dolphins and…
Feeding habits of Dall’s porpoises (Phocoenoides dalli) in the subarctic North Pacific and the Bering Sea basin and the impact of predation on mesopelagic micronekton
Ohizumi, Hiroshi; Kuramochi, Toshiaki; Kubodera, Tsunemi; Yoshioka, Motoi; Miyazaki, Nobuyuki
Deep Sea Research Part I: Oceanographic Research Papers (2003)
We investigated the stomach contents of Dall's porpoises collected in pelagic waters spanning most of their range in the North Pacific and the Bering Sea. Analysis revealed the porpoises fed…
Identifying foraging behaviour of wild bottlenose dolphins (Tursiops truncatus) and harbour porpoises (Phocoena phocoena) with static acoustic dataloggers
Nuuttila, H. K.; Meier, R.; Evans, P. G. H.; Turner, J. R.; Bennell, J. D.; Hiddink, J. G.
Aquatic Mammals (2013)
Sound is the main means of communication for cetaceans, and studying their vocal behaviour can reveal important information about their activity patterns. As static acoustic monitoring (SAM) of whales, dolphins,…
Diet overlap between harbour porpoise and bottlenose dolphin: An argument in favour of interference competition for food?
Spitz, Jérôme; Rousseau, Yann; Ridoux, Vincent
Estuarine, Coastal and Shelf Science (2006)
In aquatic ecosystems, competitive interactions are occasionally described. Violent attacks on harbour porpoises by bottlenose dolphins were reported and it was proposed that this behavior could result from competitive interactions…
Mass-dependent predation risk and lethal dolphin-porpoise interactions
MacLeod, R.; MacLeod, C. D.; Learmonth, J. A.; Jepson, P. D.; Reid, R. J.; Deaville, R.; Pierce, G. J.
Proceedings of the Royal Society B: Biological Sciences (2007)
In small birds, mass-dependent predation risk (MDPR) is known to make the trade-off between avoiding starvation and avoiding predation dependent on individual mass. This occurs because carrying increased fat reserves…