Aquatic Mammals (2019)
Social group dynamics are known to impact odontocetes’ health and welfare in captivity. Social dominance and agonistic interactions that occur to establish and maintain these relationships might express themselves differently…
Comparison of co-deployed drifting passive acoustic monitoring tools at a high flow tidal site: C-PODs and IcListenHF hydrophones
Adams, M.; Sanderson, B.; Porskamp, P.; Redden, A.
The Journal of Ocean Technology (2019)
Porpoise click detectors (C-PODs) and icListenHF hydrophones that record with a high sample rate were deployed on a drifter in fast tidal currents in Minas Passage, Bay of Fundy, on…
Differential population dynamics of a coastal porpoise correspond to the fishing effort in a large estuarine system
Lin, Wenzhi; Karczmarski, Leszek; Li, Jun; Chan, Stephen C. Y.; Guo, Lang; Wu, Yuping
Aquatic Conservation: Marine and Freshwater Ecosystems (2019)
The finless porpoise (genus Neophocaena) is susceptible to fishery‐caused mortality, and its numbers are thought to be in decline across its entire range. However, population demographics have rarely been quantified…
Context-dependent biosonar adjustments during active target approaches in echolocating harbour porpoises
Ladegaard, Michael; Madsen, Peter Teglberg
The Journal of Experimental Biology (2019)
Echolocating mammals generally target individual prey items by transitioning through the biosonar phases of search (slow-rate, high-amplitude outputs), approach (gradually increasing rate and decreasing output amplitude) and buzzing (high-rate, low-amplitude…
Modeling of the near to far acoustic fields of an echolocating bottlenose dolphin and harbor porpoise
Wei, Chong; Au, Whitlow W. L.; Ketten, Darlene R.
The Journal of the Acoustical Society of America (2020)
Echolocation signals emitted by odontocetes can be roughly classified into three broad categories: broadband echolocation signals, narrowband high-frequency echolocation signals, and frequency modulated clicks. Previous measurements of broadband echolocation signal…
Harbor porpoises (Phocoena phocoena vomerina) catching and handling large fish on the U.S. west coast
Elliser, Cindy R.; Hessing, Sanne; MacIver, Katrina H.; Webber, Marc A.; Keener, William
Aquatic Mammals (2020)
...This short note documents instances of prey handling and consumption of large fish species along the West Coast of the United States (U.S.), including the Salish Sea (inland waters of…
Determination of optimal acoustic passive reflectors to reduce bycatch of odontocetes in gillnets
Kratzer, Isabella M. F.; Schäfer, Ingo; Stoltenberg, Arne; Chladek, Jérôme C.; Kindt-Larsen, Lotte; Larsen, Finn; Stepputtis, Daniel
Frontiers in Marine Science (2020)
The need to minimize bycatch of toothed whales (odontocetes) in gillnets has long been recognized, because they are often top predators and thus essential to ecosystem resilience. It is likely…
Immune responses of the critically endangered Yangtze finless porpoises (Neophocaena asiaeorientalis ssp. asiaeorientalis) to escalating anthropogenic stressors in the wild and seminatural environments
Nabi, Ghulam; Li, Ying; McLaughlin, Richard W.; Mei, Zhigang; Wang, Kexiong; Hao, Yujiang; Zheng, Jinsong; Wang, Ding
Frontiers in Physiology (2020)
Increasing anthropogenic stressors are potential threats to biodiversity conservation and management of Yangtze finless porpoises (YFPs). The objective of this study was to indirectly compare the habitat quality of a…
After the bite: Bacterial transmission from grey seals (Halichoerus grypus) to harbour porpoises (Phocoena phocoena)
Gilbert, Maarten J.; IJsseldijk, Lonneke L.; Rubio-García, Ana; Gröne, Andrea; Duim, Birgitta; Rossen, John; Zomer, Aldert L.; Wagenaar, Jaap A.
Royal Society Open Science (2020)
Recent population growth of the harbour porpoise (Phocoena phocoena), grey seal (Halichoerus grypus) and common seal (Phoca vitulina) in the North Sea has increased potential interaction between these species. Grey…
Underwater noise pollution in China’s Yangtze River critically endangers Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)
Wang, Zhi-Tao; Akamatsu, Tomonari; Duan, Peng-Xiang; Zhou, Lu; Yuan, Jing; Li, Jiao; Lei, Pei-Yu; Chen, Yu-Wei; Yang, Yi-Ning; Wang, Ke-Xiong; Wang, Ding
Environmental Pollution (2020)
Underwater sound plays an important role in some critical life functions of many aquatic animals. Underwater noise pollution has received relatively more attention in ocean systems. However, little attention has…