Report of the International Whaling Commission (1994)
Incidental catches of harbour porpoises (Phocoena phocoena) were studied for the years 1986-89 by means of a salvage programme, an interview survey and a small scale reporting scheme. Data were…
Habitat shapes skull profile of small cetaceans: Evidence from geographical variation in Black Sea harbour porpoises (Phocoena phocoena relicta)
Gol’din, Pavel; Vishnyakova, Karina
Zoomorphology (2016)
Morphological differentiation in skull shape in small toothed whales is sometimes explained as driven by differences in ontogeny or adaptation to a benthic or pelagic habitat. To test these hypotheses,…
The potential for reducing entanglement of dolphins and porpoises with acoustic modifications to gillnets
Dawson, S. M.
Report of the International Whaling Commission (1994)
To reduce incidental catch of cetaceans in gillnets, two forms of acoustic modifications are reviewed here; one to make gillnets more reflective to cetacean sonar, and another using active sound…
Using T-PODs to assess variations in the occurrence of coastal bottlenose dolphins and harbour porpoises
Bailey, Helen; Clay, Gemma; Coates, Elizabeth A.; Lusseau, David; Senior, Bridget; Thompson, Paul M.
Aquatic Conservation: Marine and Freshwater Ecosystems (2010)
1. Assessments of anthropogenic impacts on cetaceans are often constrained by limited data on the extent to which these species use particular areas. 2. Timing porpoise detectors (T-PODs) are autonomous…
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…
Functional morphology of the hyolaryngeal complex of the harbor porpoise (Phocoena phocoena): Implications for its role in sound production and respiration
Huggenberger, Stefan; Rauschmann, Michael A.; Oelschläger, Helmut H. A.
Anatomical Record (2008)
In several publications, it was shown that echolocation sound generation in the nasal (epicranial) complex of toothed whales (Odontoceti) is pneumatically driven. Modern hypotheses consider the larynx and its surrounding…
Functional morphology of the nasal complex in the harbor porpoise (Phocoena phocoena L.)
Huggenberger, Stefan; Rauschmann, Michael A.; Vogl, Thomas J.; Oelschläger, Helmut H. A.
Anatomical Record (2009)
Toothed whales (Odontoceti, Cetacea) are the only aquatic mammals known to echolocate, and probably all of them are able to produce click sounds and to synthesize their echoes into a…
Reduction of harbour porpoise (Phocoena phocoena) bycatch by iron-oxide gillnets
Larsen, F.; Ritzau Eigaard, O.; Tougaard, J.
Fisheries Research (2007)
Reduction of harbour porpoise bycatch by use of high-density iron-oxide (IO) gillnets was tested in sea trials in the Danish North Sea bottom set gillnet fishery in September–October 2000. The…