Aquatic Mammals (2007)
Circulating cortisol levels are accepted as a sensitive indicator of acute stress in marine mammals, particularly in relation with capture and handling. The present study provides the first long-term monitoring…
Modeling the detection range of fish by echolocating bottlenose dolphins and harbor porpoises
Au, Whitlow W. L.; Benoit-Bird, Kelly J.; Kastelein, Ronald A.
The Journal of the Acoustical Society of America (2007)
The target strength as a function of aspect angle were measured for four species of fish using dolphin-like and porpoise-like echolocation signals. The polar diagram of target strength values measured…
Starvation and sandeel consumption in harbour porpoises in the Scottish North Sea
MacLeod, Colin D.; Pierce, Graham J.; Begoña Santos, M.
Biology Letters (2007)
(...) Based on the evidence of a link between the likelihood of starvation and a lack of sandeels in the diet of porpoises in the Scottish North Sea in spring,…
Linking sandeel consumption and the likelihood of starvation in harbour porpoises in the Scottish North Sea: Could climate change mean more starving porpoises?
MacLeod, C. D.; Santos, M. B.; Reid, R. J.; Scott, B. E.; Pierce, G. J.
Biology Letters (2007)
Sandeels are known to be negatively affected by climate change in a number of ways. This study investigated whether these changes are affecting the harbour porpoise (Phocoena phocoena), a species…
Rise of oceanographic barriers in continuous populations of a cetacean: the genetic structure of harbour porpoises in Old World waters
Fontaine, Michaël C; Baird, Stuart JE; Piry, Sylvain; Ray, Nicolas; Tolley, Krystal A; Duke, Sarah; Birkun, Alexei; Ferreira, Marisa; Jauniaux, Thierry; Llavona, Ángela; Öztürk, Bayram; A Öztürk, Ayaka; Ridoux, Vincent; Rogan, Emer; Sequeira, Marina; Siebert, Ursula; Vikingsson, Gísli A; Bouquegneau, Jean-Marie; Michaux, Johan R
BMC Biology (2007)
Understanding the role of seascape in shaping genetic and demographic population structure is highly challenging for marine pelagic species such as cetaceans for which there is generally little evidence of…
Long-term feeding ecology and habitat use in harbour porpoises Phocoena phocoena from Scandinavian waters inferred from trace elements and stable isotopes
Fontaine, Michaël C; Tolley, Krystal A; Siebert, Ursula; Gobert, Sylvie; Lepoint, Gilles; Bouquegneau, Jean-Marie; Das, Krishna
BMC Ecol (2007)
We investigated the feeding ecology and habitat use of 32 harbour porpoises by-caught in 4 localities along the Scandinavian coast from the North Sea to the Barents Sea using time-integrative…
Echolocation signals of wild harbour porpoises, Phocoena phocoena
Villadsgaard, A.; Wahlberg, M.; Tougaard, J.
Journal of Experimental Biology (2007)
Field recordings of harbour porpoises (Phocoena phocoena) were made in the inner Danish waters with a vertical array of three or four hydrophones. The back-calculated source level ranged from 178…
Automatic Gain Control in Harbor Porpoises (Phocoena phocoena)? Central Versus Peripheral Mechanisms
Beedholm, Kristian; Miller, Lee A.
Aquatic Mammals (2007)
A previous study indicated no automatic gain control (AGC) in the auditory system of a harbor porpoise (Phocoena phocoena) as revealed by recording auditory evoked potentials to simulated echoes (Beedholm…
Biological and ecological factors related to trace element levels in harbour porpoises (Phocoena phocoena) from European waters
Lahaye, V.; Bustamante, P.; Law, R.J.; Learmonth, J.A.; Santos, M.B.; Boon, J.P.; Rogan, E.; Dabin, W.; Addink, M.J.; López, A.; Zuur, A.F.; Pierce, G.J.; Caurant, F.
Marine Environmental Research (2007)
Selected trace elements (Cd, Cu, Hg, Se, Zn) were measured in the kidneys and the liver of 104 harbour porpoises (Phocoena phocoena) stranded along the coasts of France, Galicia (Spain),…
Mass-dependent predation risk and lethal dolphin-porpoise interactions
MacLeod, R.; MacLeod, C. D.; Learmonth, J. A.; Jepson, P. D.; Reid, R. J.; Deaville, R.; Pierce, G. J.
Proceedings of the Royal Society B: Biological Sciences (2007)
In small birds, mass-dependent predation risk (MDPR) is known to make the trade-off between avoiding starvation and avoiding predation dependent on individual mass. This occurs because carrying increased fat reserves…