Results 31 to 40 of about 7,925 (202)

Toothed whale auditory brainstem responses measured with a non-invasive, on-animal tag [PDF]

JASA Express Letters, 2021
Empirical measurements of odontocete hearing are limited to captive individuals, constituting a fraction of species across the suborder. Data from more species could be available if such measurements were collected from unrestrained animals in the wild ...
Adam B. Smith, Peter T. Madsen, Mark Johnson, Peter Tyack, Magnus Wahlberg   +4 more
doaj   +1 more source

Cognitive control of heart rate in diving harbor porpoises [PDF]

Current Biology, 2016
Marine mammals have adapted to forage while holding their breath in a suite of aquatic habitats from shallow rivers to deep oceans. The key to tolerate such extensive apnea is the dive response, which comprises bradycardia and peripheral vasoconstriction.
Elmegaard, S.L., Johnson, M., Madsen, P.T., McDonald, B.I.   +3 more
openaire   +4 more sources

An increase in detection rates of the critically endangered Baltic Proper harbor porpoise in Swedish waters in recent years

Conservation Science and Practice, 2021
The Baltic Proper harbor porpoise (Phocoena phocoena) is currently listed as critically endangered (CR), with the Static Acoustic Monitoring of the Baltic Sea Harbor Porpoise (SAMBAH) project concluding that only ~500 individuals remain.
Kylie Owen, Martin Sköld, Julia Carlström   +2 more
doaj   +1 more source

Harbour porpoises (Phocoena phocoena) and wind farms: a case study in the Dutch North Sea [PDF]

, 2011
The rapid increase in development of offshore wind energy in European waters has raised concern for the possible environmental impacts of wind farms. We studied whether harbour porpoise occurrence has been affected by the presence of the Dutch offshore ...
Brasseur, S.M.J.M., Carstensen, J., Polanen Petel, T., van, Reijnders, P.J.H., Scheidat, M., Teilmann, J., Tougaard, J.   +6 more
core   +2 more sources

Reproductive Failure in UK Harbour Porpoises Phocoena phocoena : Legacy of Pollutant Exposure? [PDF]

, 2015
This research was supported by a Marie Curie International Outgoing Fellowship within the Seventh European Community Framework Programme (Project Cetacean-stressors, PIOF-GA-2010-276145 to PDJ and SM).
Barber, Jonathan L., Brownlow, Andrew, Davison, Nick, Deaville, Robert, Jepson, Paul D., Law, Robin J., Learmonth, Jennifer A., Murphy, Sinead, Penrose, Rod, Perkins, Matthew W., Pierce, Graham J., Read, Fiona L.   +11 more
core   +10 more sources

Fatal aspergillosis and evidence of unrelated hearing loss in a harbor porpoise (Phocoena phocoena) from the German Baltic Sea

Frontiers in Marine Science, 2022
Detailed post-mortem investigations including the auditory pathway are needed to advance our understanding of how underwater noise and other stressors affect hearing in cetaceans.
Simon Rohner, Maria Morell, Peter Wohlsein, Julian Stürznickel, Eva B. Reiter, Annika Jahnke, Annika Jahnke, Ellen Prenger-Berninghoff, Christa Ewers, Grit Walther, Lotte C. Striewe, Antonio Virgilio Failla, Ursula Siebert   +12 more
doaj   +1 more source

Investigating the potential use of environmental DNA (eDNA) for genetic monitoring of marine mammals. [PDF]

PLoS ONE, 2012
The exploitation of non-invasive samples has been widely used in genetic monitoring of terrestrial species. In aquatic ecosystems, non-invasive samples such as feces, shed hair or skin, are less accessible.
Andrew D Foote, Philip Francis Thomsen, Signe Sveegaard, Magnus Wahlberg, Jos Kielgast, Line A Kyhn, Andreas B Salling, Anders Galatius, Ludovic Orlando, M Thomas P Gilbert   +9 more
doaj   +1 more source

Harbor porpoise (Phocoena phocoena) reactions to pingers

Marine Mammal Science, 2018
AbstractThe use of acoustic alarms (pingers) has been mandated in several gill net fisheries around the world. Even though pingers have shown to reduce the incidental catch there are still questions to be answered in relation to effective range, habituation and displacement. In the present studies, the vocalization behavior of porpoises was recorded in
Kindt-Larsen, Lotte, Berg, Casper Willestofte, Northridge, Simon, Larsen, Finn   +3 more
openaire   +3 more sources

Histopathologic and Immunocytochemical Studies of Distemper in Harbor Porpoises [PDF]

Veterinary Pathology, 1991
During 1988 thousands of harbor seals ( Phoca vitulina) died in European seas as a result of morbillivirus infection. Six harbor porpoises ( Phocoena phocoena) found stranded on the coast of Northern Ireland in late 1988 were submitted to our laboratory for necropsy. Pneumonia was the main necropsy finding in three of these animals.
S, Kennedy, J A, Smyth, P F, Cush, M, McAliskey, S J, McCullough, B K, Rima   +5 more
openaire   +2 more sources

Pathological findings in stranded harbor porpoises (Phocoena phocoena) with special focus on anthropogenic causes

Frontiers in Marine Science, 2022
Humans impact natural systems at an unprecedented rate. The North Sea is one of the regions in the world with the highest levels of anthropogenic activity.
Lonneke L. IJsseldijk, Mardik F. Leopold, Lineke Begeman, Marja J. L. Kik, Lidewij Wiersma, Maria Morell, Elisa L. Bravo Rebolledo, Thierry Jauniaux, Hans Heesterbeek, Andrea Gröne   +9 more
doaj   +1 more source