Aquatic Mammals (2019)
Odontocetes are usually reported giving birth to calves in breech position (fluke-first). Cephalic position (head-first) is less frequently observed and, therefore, is considered to be abnormal for the parturition. However,…
Quantifying harbour porpoise foraging behaviour in CPOD data: Identification, automatic detection and potential application
Berges, B. J. P.; Geelhoed, S. C. V.; Scheidat, M.; Tougaard, J.
Wageningen Marine Research Reports (2019)
Harbour porpoises (Phocoena phocoena) are regularly monitored to assess how they are impacted by the construction and operation of offshore wind farms. A suitable method to do this is passive…
Pingers reduce the activity of Burmeister’s porpoise around small-scale gillnet vessels
Clay, T. A.; Alfaro-Shigueto, J.; Godley, B. J.; Tregenza, N.; Mangel, J. C.
Marine Ecology Progress Series (2019)
Incidental mortality (bycatch) in gillnet fisheries is a major threat to many cetacean populations. Acoustic alarms or pingers are a widely adopted management tool used to deter dolphins and porpoises…
Time of arrival difference estimation for narrow band high frequency echolocation clicks
Gillespie, Douglas; Macaulay, Jamie
The Journal of the Acoustical Society of America (2019)
Algorithms are presented for the accurate time of arrival difference estimation of high frequency narrow band echolocation clicks from Harbor Porpoise. These clicks typically have a center frequency of around…
Swimming features in captive odontocetes: Indicative of animals’ emotional state?
Serres, Agathe; Hao, Yujiang; Wang, Ding
Behavioural Processes (2020)
Captive welfare studies in odontocete species have been mostly conducted on bottlenose dolphins (Tursiops truncatus) while the welfare of many other species’ -including endangered species- remains poorly studied. More research…
Two decades’ variation of trace elements in bones of the endangered East Asian Finless Porpoise (Neophocaena asaeorientalis sunameri) from the East China Sea, China
Hao, Xiuqing; Shan, Hong; Wu, Caiwen; Zhang, Di; Chen, Bingyao
Biological Trace Element Research (2020)
There has been increasing concern about trace element accumulation in finless porpoises over the past decades, while the long-term variation of its concentration has been little known. Since most soft…
Distribution and abundance of cetaceans in Icelandic waters over 30 years of aerial surveys
Pike, Daniel; Gunnlaugsson, Thorvaldur; Sigurjonsson, Johann; Vikingsson, Gisli
NAMMCO Scientific Publications (2020)
Beginning in 1986, 7 aerial surveys covering the coastal waters of Iceland have been conducted up to 2016. In addition, several partial surveys covering portions of the same area and…
Evaluating management strategies for marine mammal populations: An example for multiple species and multiple fishing sectors in Iceland
Punt, André E; Siple, Margaret; Sigurðsson, Guðjón M.; Víkingsson, Gisli; Francis, Tessa B.; Granquist, Sandra Magdalena; Hammond, Philip S; Heinemann, Dennis; Long, Kristy J.; Moore, Jeffrey E.; Sepúlveda, Maritza; Reeves, Randall R.; Wade, Paul R.; Williams, Rob; Zerbini, Alexandre N.
Canadian Journal of Fisheries and Aquatic Sciences (2020)
A Management Strategy Evaluation is used to estimate success at achieving conservation goals for marine mammals while also aiming to minimize impacts on commercial fisheries. It is intended to improve…
Population structure of bycaught harbour porpoise (Phocoena phocoena) in Norway
Quintela, María; Besnier, François; Seliussen, Bjørghild; Glover, Kevin A.; Lindstrøm, Ulf
Marine Biology Research (2020)
The preference for coastal habitats makes the harbour porpoise, Phocoena phocoena, vulnerable to fisheries conflicts and hence prone to die due to entangling in fishing nets. An opportunistic sampling of…
Asymmetric and spiraled genitalia coevolve with unique lateralized mating behavior
Orbach, Dara N.; Brennan, Patricia L. R.; Hedrick, Brandon P.; Keener, William; Webber, Marc A.; Mesnick, Sarah L.
Scientific Reports (2020)
Asymmetric genitalia and lateralized mating behaviors occur in several taxa, yet whether asymmetric morphology in one sex correlates or coevolves with lateralized mating behavior in the other sex remains largely…