Investigations on Cetacea (1983)
This monograph may be regarded as an important supplement to the book »Echolocation in Whales and Dolphins» by Purves and Pilleri, published by the Academic Press, London, 1983. It contains…
Bony nares air pressure and nasal plug muscle activity during click production in the harbour porpoise, Phocoena phocoena, and the bottlenosed dolphin, Tursiops truncatus
Amundin, M.; Andersen, S.H.
Journal of Experimental Biology (1983)
Sound production mechanisms have been studied in two delphinid species - the harbour porpoise, Phocoena phocoena (L.), and the bottlenosed dolphin, Tursiops truncatus (Montagu). It was found that, in both…
Investigations on cetacean sonar VII: Underwater sounds of Neophocaena phocaenoides of the Japanese coastal population
Kamminga, C.; Kataoka, T.; Engelsma, F. J.
Aquatic Mammals (1986)
This paper describes the sonar sounds from four captive Neophocaena, two males and two females, which were tape recorded and processed with regard to their behaviour in the time and…
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…
Forehead anatomy of Phocoena phocoena and Cephalorhynchus commersonii: 3-dimensional computer reconstructions with emphasis on the nasal diverticula
Amundin, Mats; Cranford, Ted
Sensory Abilities of Cetaceans (1990)
(...) Watkins et al. (1977) and Dudok van Heel (1981) point to similarity in sound output in Cephalorhynchus and Phocoena, and suggest that it may be the result of convergent…
Facial anatomy and potential function of facial structures for sound production in the harbor porpoise (Phocoena phocoena) and Dall’s porpoise (Phocoenoides dalli)
Curry, Barbara E.
Can. J. Zool. (1992)
Structural modifications of the odontocete skull and nasal passages have shifted the position of the facial bones and associated soft anatomy to the dorsal aspect of the head. The facial…
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…
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…
Investigations on cetacean sonar XI: Intrinsic comparison of the wave shapes of some members of the Phocoenidae family
Kamminga, C.; Cohen Stuart, A.; Silber, G. K.
Aquatic Mammals (1996)
A comparison of the acoustic waveforms of three different species, Phocoena phocoena, Phocoena sinus and Neophocaena phocaenoides of the sub-family Phocoeninae is made with the species Phocoenoides dalli of the…
Measurements of the nasal sacs of individual common dolphin, Delphinus delphis, and Dall’s porpoise, Phocoenoides dalli, by means of silicon reconstruction.
NAKAMURA, Koji; YAMADA, Tadasu K.; SHIMAZAKI, Kenji
Mammal Study (1998)
(...) The physical properties of the sounds produced by toothed whales are directly affected by the morphological characteristics of the air space in the head and by the sound-production mechanism…