Honours Thesis - University of Conneticut (2009)
Hearing is extremely important for cetaceans because it is their “principal sense” (Weilgart, 2007) thus the harbor porpoise and other marine animals are highly dependent on sound for survival. This…
Abundance of harbour porpoise and other cetaceans in the North Sea and adjacent waters
Hammond, P.S.; Berggren, P.; Benke, H.; Borchers, D.L.; Collet, A.; Heide-Jørgensen, M.P.; Heimlich, S.; Hiby, A.R.; Leopold, M.F.; Øien, N.
Journal of Applied Ecology (2002)
1. The status of small cetaceans in the North Sea and adjacent waters has been of concern for many years. Shipboard and aerial line transect surveys were conducted to provide…
A decline in the abundance of harbor porpoise, Phocoena phocoena, in nearshore waters off California, 1986-93
Forney, K. A.
Fishery Bulletin (1995)
(...) Harbor porpoise, Phocoena phocoena, have been caught incidentally in set gill nets off the central California coast since at least 1958 (Norris and Prescott, 1961). The annual mortality of…
A comparison of aerial, shipboard, and land-based survey methodology for the harbor porpoise, Phocoena phocoena
Kraus, S. D.; Gilbert, J. R.; Prescott, J. H.
Fishery Bulletin (1983)
(...) A review of the status of harbor porpoise, Phocoena phocoena, in the U.S. waters of the western North Atlantic identified substantial information gaps in our knowledge about this species,…
Mercury contamination of the harbour porpoise Phocoena phocoena and other cetaceans from the North Sea and the Kattegat
Joiris, C. R.; Holsbeek, L.; Bouquegneau, JM.; Bossicart, M.
Water, Air, and Soil Pollution (1991)
Total Hg levels were determined in 17 harbour porpoises Phocoena phocoena collected in the North Sea and the Kattegat (muscle, liver and kidney), as well as in a sperm whale…
The modulation rate transfer function of a harbour porpoise (Phocoena phocoena)
Linnenschmidt, Meike; Wahlberg, Magnus; Damsgaard Hansen, Janni
Journal of Comparative Physiology A (2012)
During echolocation, toothed whales produce ultrasonic clicks at extremely rapid rates and listen for the returning echoes. The auditory brainstem response (ABR) duration was evaluated in terms of latency between…
Stereotypical rapid source level regulation in the harbour porpoise biosonar
Linnenschmidt, Meike; Kloepper, Laura N.; Wahlberg, Magnus; Nachtigall, Paul E.
Naturwissenschaften (2012)
Some odontocetes and bats vary both click intensity and receiver sensitivity during echolocation, depending on target range. It is not known how this so-called automatic gain control is regulated by…
How do odontocetes perceive their own sounds?
Behrmann, G.
European Research on Cetaceans (1988)
(...) The free-swinging bullae of odontocetes are very massive, their specific weight being twice that of the other skull bones. This feature led Yamada (1953) to his theory that the…
Population structure of harbour porpoises Phocoena phocoena in the seas around the UK and adjacent waters
Walton, M. J.
Proceedings of the Royal Society B: Biological Sciences (1997)
The population structure of harbour porpoises from British and adjacent waters was studied by examining variability in a 200 bp (base pair) section of the control region of mitochondrial DNA…
Maternal care, calf training and site fidelity in a wild harbour porpoise in the North Sea
Camphuysen, Kees C. J.; Krop, Anton
Lutra (2011)
(...) Direct, undisturbed observations of interactions of mother and offspring in harbour porpoises (Phocoena phocoena) in the wild are extremely rare. Because harbour porpoises are seldom held and hardly breed…