Investigations on Cetacea (1979)
Two species of dolphin inhabit the Changjiang (Yangtze): Lipotes vexillifer MILLER, 1918 (known as Baiji in Chinese) and the Finless porpoise, Neophocaena asiaeorientalis PILLERI and GIHR, 1972. Although quite a…
Surface and dive times of finless porpoises in Hong Kong’s coastal waters
Beasley, I.; Jefferson, T. A.;
The Raffles Bulletin of Zoology (2002)
We studied the surface and dive times of finless porpoises (Neophocaena phocaenoides) in Hong Kong from three land-based survey sites in winter/spring 2000, to allow the estimation of the trackline…
Ultra-high foraging rates of harbor porpoises make them vulnerable to anthropogenic disturbance
Wisniewska, Danuta Maria; Johnson, Mark; Teilmann, Jonas; Rojano-Doñate, Laia; Shearer, Jeanne; Sveegaard, Signe; Miller, Lee A.; Siebert, Ursula; Madsen, Peter Teglberg
Current Biology (2016)
The question of how individuals acquire and allocate resources to maximize fitness is central in evolutionary ecology. Basic information on prey selection, search effort, and capture rates are critical for…
New approaches to studying the foraging ecology of small cetaceans
Read, Andrew J.
Developments in Marine Biology (1995)
Dolphins and porpoises spend the majority of their lives underwater, out of the view of human observers. Consequently, scientists have relied on indirect means to study the foraging ecology of…
Behaviour and physiological effects of transmitter attachments on a captive harbour porpoise (Phocoena phocoena)
Geertsen, B. M.; Teilmann, J.; Kastelein, R. A.; Vlemmix, H. N. J.; Miller, L. A.
Journal of Cetacean Research and Management (2004)
A captive harbour porpoise (Phocoena phocoena) was monitored for 80 consecutive days, 10 days before attachment of a satellite dive recorder and a VHF-radio tag, 30 days during attachment and…
Scanning sonar of rolling porpoises during prey capture dives
Akamatsu, T.; Wang, D.; Wang, K.; Li, S.; Dong, S.
Journal of Experimental Biology (2009)
Dolphins and porpoises have excellent biosonar ability, which they use for navigation, ranging and foraging. However, the role of biosonar in free-ranging small cetaceans has not been fully investigated. The…
Time allocation and diving behaviour of harbour porpoises (Phocoena phocoena) in Danish and adjacent waters
TEILMANN, JONAS; LARSEN, FINN; DESPORTES, GENEVIÉVE
Journal of Cetacean Research and Management (2007)
To gain insight into the time allocation and diving behaviour of harbour porpoises in Danish and adjacent waters, satellite linked dive recorders were mounted on 14 harbour porpoises. The animals…
A study of the behavior of Dall’s porpoise (Phocoenoides dalli) in the Johnstone Strait, British Columbia
Jefferson, Thomas A.
Can. J. Zool. (1987)
The behavior of Dall's porpoise was studied in the western Johnstone Strait, British Columbia, during the summer of 1984. Observations and theodolite trackings were made from a cliff-top observation point…
Biosonar, dive, and foraging activity of satellite tracked harbor porpoises (Phocoena phocoena)
Linnenschmidt, Meike; Teilmann, Jonas; Akamatsu, Tomonari; Dietz, Rune; Miller, Lee A.
Mar Mam Sci (2012)
This study presents bioacoustic recordings in combination with movements and diving behavior of three free-ranging harbor porpoises (a female and two males) in Danish waters. Each porpoise was equipped with…
Geographic, seasonal, and diurnal surface behavior of harbor porpoises
Teilmann, Jonas; Christiansen, Casper T.; Kjellerup, Sanne; Dietz, Rune; Nachman, Gösta
Mar Mam Sci (2012)
During ship surveys harbor porpoises are only visible when breaking the sea surface to breathe, while during aerial surveys they may be seen down to 2 m below the surface.…