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…
A note on cetacean bycatches in German waters
Benke, H.
Report of the International Whaling Commission (1994)
This note summarises available information on bycatches of harbour porpoises in German waters since 1987. Most information is for the cod set net fishery in Schleswig-Holstein. More recently, information on…
Refractive index in the cornea of a harbor porpoise (Phocoena phocoena) measured by two-wavelengths laser-interferometry
Kröger, R.H.H.; Kirschfeld, K.
Aquatic Mammals (1994)
The refractive index of the cornea of a harbor porpoise eye was measured by two-wavelengths laser-interferometry. In the thickest part of the cornea a refractive index of about 1.53 was…
Response of free-ranging harbour porpoises to potential gillnet modifications
Silber, G. K.; Waples, K. A.; Nelson, P. A.
Report of the International Whaling Commission (1994)
Thousands of porpoises die annually in monofilament gillnets. Simple net modifications may alleviate the problem. In June through August 1988, we quantified harbour porpoise (Phocoena phocoena) reactions to weighted vertical…
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…
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…
Harbor porpoise interactions with a chinook salmon set-net fishery in Washington State
Gearin, P. J.; Melin, S. R.; DeLong, R. L.; Kajimura, H.; Johnson, M. A.
Report of the International Whaling Commission (1994)
A cooperative study based on an agreement between the National Marine Fisheries Service and the Makah Indian Tribe was conducted during 1988-90 to assess the nature and magnitude of harbor…
Morphometric comparison of the epidermis in several cetacean species
Jones, F. M.; Pfeiffer, C. J.
Aquatic Mammals (1994)
Epidermal thickness and relative papillary height of the skin from the urogenital region were compared with values from the ventral aspect of the flipper and the mid-dorsal body wall. Data…
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…
A review of studies on attempts to reduce the entanglement of the Dall’s Porpoise, Phocoenoides dalli, in the Japanese salmon gillnet fishery
Hatakeyama, Y.; Ishii, K.; Akamatsu, T.; Soeda, H.; Shimamura, T.; Kojima, T.
Report of the International Whaling Commission (1994)
Dall's porpoises, Phocoenoides dalli, were often incidentally caught in the Japanese salmon gillnet fishery in the North Pacific. In order to investigate the reasons for entanglement, their auditory characteristics and…