Lat. Am. J. Aquat. Mamm. (2009)
(...) In the autumn of 2008, a large-scale international effort to study the vaquita and develop methods to monitor its population status was conducted. As part of this effort, we…
A new species of Haborophocoena , an early Pliocene phocoenid cetacean from Hokkaido, Japan
Ichishima, Hiroto; Kimura, Masaichi
Marine Mammal Science (2009)
A new species of phocoenid cetacean Haborophocoena, collected from the Early Pliocene Embetsu Formation, in the close vicinity to the site where the holotype of the type species of the…
Habitat preferences and interannual variability in occurrence of the harbour porpoise Phocoena phocoena off northwest Scotland
Marubini, F.; Gimona, A.; Evans, P. G. H.; Wright, P. J.; Pierce, G. J.
Marine Ecology Progress Series (2009)
The harbour porpoise Phocoena phocoena is the most common cetacean around the British Isles, but knowledge of its ecology, habitat preferences and inter-annual variability is still inadequate. Here, sightings collected…
Acoustic behaviour of echolocating porpoises during prey capture
DeRuiter, S. L.; Bahr, A.; Blanchet, M.-A.; Hansen, S. F.; Kristensen, J. H.; Madsen, P. T.; Tyack, P. L.; Wahlberg, M.
Journal of Experimental Biology (2009)
Porpoise echolocation has been studied previously, mainly in target detection experiments using stationed animals and steel sphere targets, but little is known about the acoustic behaviour of free-swimming porpoises echolocating…
Echolocation by two foraging harbour porpoises (Phocoena phocoena)
Verfuss, U. K.; Miller, L. A.; Pilz, P. K. D.; Schnitzler, H.-U.
Journal of Experimental Biology (2009)
Synchronized video and high-frequency audio recordings of two trained harbour porpoises searching for and capturing live fish were used to study swimming and echolocation behaviour. One animal repeated the tasks…
Acoustic basis for fish prey discrimination by echolocating dolphins and porpoises
Au, Whitlow W. L.; Branstetter, Brian K.; Benoit-Bird, Kelly J.; Kastelein, Ronald A.
The Journal of the Acoustical Society of America (2009)
The biosonar system of dolphins and porpoises has been studied for about 5 decades and much has been learned [Au, W. W. L. (1993). The Sonar of Dolphins (Springer, New…
Fort Richardson ordnance detonations and the harbor porpoise: A case study in marine mammal bioacoustics
Heenehan, H.
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…
Report of Vaquita Expedition 2008 and current conservation actions
Jaramillo-Legorreta, Armando M.; Taylor, Barb; Gerrodette, Tim; Rankin, Shannon; Swift, Rene; Rojas-Bracho, Lorenzo
Scientific Committee Meeting Documents (2009)
Two scientific efforts brought the need for immediate actions to conserve vaquita as a high priority for the Mexican government. Passive acoustic techniques (Jaramillo-Legorreta, 2008) revealed a negative trend of…
Physiological responses to capture and handling of free-ranging male Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis)
Hao, Yu-Jiang; Zhao, Qing-Zhong; Wu, Hai-Ping; Chen, Dao-Quan; Gong, Cheng; Li, Li; Wang, Ding
Marine and Freshwater Behaviour and Physiology (2009)
We captured free-ranging male Yangtze finless porpoises over three seasons and assayed leukocytes and serum biochemistry to investigate physiological responses to the capture and handlings. Serum thyroid hormones (THs) declined…
Changes in click source levels with distance to targets: Studies of free-ranging white-beaked dolphins Lagenorhynchus albirostris and captive harbour porpoises Phocoena phocoena
Atem, Ana Carolina G.; Rasmussen, Marianne H.; Wahlberg, Magnus; Petersen, Hans C.; Miller, Lee A.;
Bioacoustics (2009)
Probably all odontocetes use echolocation for spatial orientation and detection of prey. We used a four hydrophone “Y” array to record the high frequency clicks from free-ranging White-beaked Dolphins Lagenorhynchus…