Results 21 to 30 of about 2,413 (172)
Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds [PDF]
Royal Society Open Science, 2017 Acoustic harassment devices (AHD) or ‘seal scarers’ are used extensively, not only to deter seals from fisheries, but also as mitigation tools to deter marine mammals from potentially harmful sound sources, such as offshore pile driving.
Lonnie Mikkelsen +4 more
doaj +1 more source
How can dolphins recognize fish according to their echoes? A statistical analysis of fish echoes. [PDF]
PLoS ONE, 2010 Echo-based object classification is a fundamental task of animals that use a biosonar system. Dolphins and porpoises should be able to rely on echoes to discriminate a predator from a prey or to select a desired prey from an undesired object.
Yossi Yovel, Whitlow W L Au
doaj +1 more source
A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica). [PDF]
Anat Rec (Hoboken)Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Graïc JM +26 more
europepmc +2 more sources
Population-level laterality in foraging finless porpoises
Scientific Reports, 2021 Laterality has been reported in many vertebrates, and asymmetrical cerebral hemisphere function has been hypothesized to cause a left-bias in social behavior and a right-bias in feeding behavior.
Masao Amano +4 more
doaj +1 more source
Proceedings of the National Academy of Sciences, 2012 Fontaine et al. provide insight into the structure of a geographically disjunct population on a severe downtrend (1). To understand these data, they turned to a Bayesian statistical approach, providing the mathematical base for changing existing beliefs in light of new evidence.
openaire +2 more sources
Ecological Solutions and Evidence, 2021 Harbour porpoises frequently alter their behaviour in response to underwater sound from shipping, seismic surveys, drilling and marine renewables. Less well understood is the response of porpoises to sounds emitted from oil and gas (O&G) platforms during
Karin Tubbert Clausen +5 more
doaj +1 more source
Oceans, 2021 The pervasive use of antibiotics in human medicine, veterinary medicine, and agriculture can result in a significant increase in the spread and environmental persistence of antibiotic resistance in marine ecosystems. This study describes the presence and
Stephanie A. Norman +13 more
doaj +1 more source
The diel rhythms of biosonar behavior in the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) in the port of the Yangtze River: The correlation between prey availability and boat traffic. [PDF]
PLoS ONE, 2014 Information on the habitat use of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critical for its conservation.
Zhitao Wang +3 more
doaj +1 more source
International Journal for Parasitology: Parasites and Wildlife, 2021 Pseudaliid lungworm (Metastrongyloidea) infections and associated secondary bacterial infections may severely affect the health status of harbour porpoises (Phocoena phocoena) in German waters. The presented retrospective analysis including data from 259
Anja Reckendorf +8 more
doaj +1 more source
BMC Zoology, 2020 Background Aggressive interactions between bottlenose dolphins (Tursiops truncatus) and harbor porpoises (Phocoena phocoena) have been reported in different parts of the world since the late 1990s.
Stephanie Gross +8 more
doaj +1 more source