Results 31 to 40 of about 6,377 (167)

First report of infestation by a parasitic copepod (Pennella balaenopterae) in a harbour porpoise (Phocoena phocoena) from the Aegean Sea: a case report

Veterinární Medicína, 2014
An adult, female harbour porpoise (Phocoena phocoena relicta) was found stranded on the southern Aegean Sea coast of Turkey. Thirteen holes made by copepods were observed on the lateral sides of the porpoise.
E. Danyer, A.M. Tonay, I. Aytemiz, A. Dede, F. Yildirim, A. Gurel   +5 more
doaj   +1 more source

Do pingers cause stress in fish? An experimental tank study with European sardine, Sardina pilchardus (Walbaum, 1792) (Actinopterygii, Clupeidae), exposed to a 70 kHz dolphin pinger [PDF]

, 2014
Date of acceptance: 06/12/2014 Acknowledgments The study was funded by the Portuguese Ministry of Science (Fundac¸a˜o para a Cieˆncia e Tecnologia– FCT) through a PhD Grant of SG (SFRH/BD/47931/2008).
Begona Santos, M., Costas Costas, Damian, Goetz, Sabine, Gonzalez Villanueva, Antonio, Pierce, Graham John, Vingada, Jose   +5 more
core   +1 more source

Diurnal variation in harbour porpoise detection – potential implications for management [PDF]

, 2017
Peer reviewedPublisher ...
Brookes, K L, Graham, I M, Scott, B E, Thompson, P M, Williamson, L D   +4 more
core   +2 more sources

Harbour porpoises (Phocoena phocoena) in the North Atlantic: Distribution and genetic population structure

NAMMCO Scientific Publications, 2003
The known geographical distribution (based on ship surveys, aerial surveys, incidental sightings, stranding and bycatch data) and the population genetic structure obtained from mitochondria DNA and nuclear DNA (isozymes and microsatellites) data analyses
Liselotte Wesley Andersen
doaj   +1 more source

Blast injury on harbour porpoises (Phocoena phocoena) from the Baltic Sea after explosions of deposits of World War II ammunition

Environment International, 2022
Harbour porpoises are under pressure from increasing human activities. This includes the detonation of ammunition that was dumped in large amounts into the sea during and after World War II.
Ursula Siebert, Julian Stürznickel, Tobias Schaffeld, Ralf Oheim, Tim Rolvien, Ellen Prenger-Berninghoff, Peter Wohlsein, Jan Lakemeyer, Simon Rohner, Luca Aroha Schick, Stephanie Gross, Dominik Nachtsheim, Christa Ewers, Paul Becher, Michael Amling, Maria Morell   +15 more
doaj   +1 more source

Echolocation detections and digital video surveys provide reliable estimates of the relative density of harbour porpoises [PDF]

, 2016
Acknowledgements We would like to thank Erik Rexstad and Rob Williams for useful reviews of this manuscript. The collection of visual and acoustic data was funded by the UK Department of Energy & Climate Change, the Scottish Government, Collaborative ...
Beth E. Scott, Buckland S.T., Gareth Bradbury, Isla M. Graham, Jana McPherson, Kate L. Brookes, Laura D. Williamson, Mudge G.P., Paul M. Thompson, Philip S. Hammond, R Core Team   +10 more
core   +2 more sources

Multiple stressors and data deficient populations; a comparative life-history approach sheds new light on the extinction risk of the highly vulnerable Baltic harbour porpoises (Phocoena phocoena)

Environment International, 2020
Many endangered marine mammal populations are difficult to study, spread out over large areas, and capturing them for branding and research purposes would be unethical. Yet, they are in urgent need for assessment and conservation actions.
Linnea Cervin, Tero Harkonen, Karin C. Harding   +2 more
doaj   +1 more source

Estimating the spatial position of marine mammals based on digital camera recordings [PDF]

, 2015
Estimating the spatial position of organisms is essential to quantify interactions between the organism and the characteristics of its surroundings, for example,predator–prey interactions, habitat selection, and social associations.
Aarts, G., Brasseur, S., Camphuysen, K.C.J., de Vries, J.J., Greinert, J., Hoekendijk, J.P.A., van der Bolt, K.   +6 more
core   +5 more sources

Range-dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena) [PDF]

, 2015
Funding: Det Frie Forskningsrad (MJ)Toothed whales use sonar to detect, locate, and track prey. They adjust emitted sound intensity, auditory sensitivity and click rate to target range, and terminate prey pursuits with high-repetition-rate, low-intensity
Aroyan, Au, Au, Au, Au, Au, Au, Au, Au, Au, Beedholm, Cranford, Cranford, Deruiter, Evans, Finneran, Griffin, Griffin, Harper, Hartley, Huggenberger, Jacobs, Jakobsen, Jakobsen, Johnson, Johnson, Kalko, Kastelein, Kellogg, Koblitz, Konishi, Kyhn, Land, Linnenschmidt, Lockyer, Madsen, Madsen, Madsen, Menne, Moore, Morozov, Møhl, Norris, Ramirez, Ratcliffe, Ridgway, Supin, Surlykke, Varanasi, Verfuss, Wisniewska   +50 more
core   +4 more sources

Validation of the F-POD-A fully automated cetacean monitoring system.

PLoS ONE, 2023
The F-POD, an echolocation-click logging device, is commonly used for passive acoustic monitoring of cetaceans. This paper presents the first assessment of the error-rate of fully automated analysis by this system, a description of the F-POD hardware ...
Julia Ivanchikova, Nicholas Tregenza
doaj   +1 more source