Results 21 to 30 of about 2,362 (131)

Spatiotemporal variations and driving factors of fine-scale habitat use by the Yangtze finless porpoise population in the Yangtze River [PDF]

BMC Zoology
Background The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critically endangered and has suffered from extensive habitat loss and fragmentation.
Ping Zhang, Zhongyin Yu, Daoping Yu, Bangzhi Ding, Minmin Chen   +4 more
doaj   +2 more sources

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, Line Hermannsen, Kristian Beedholm, Peter Teglberg Madsen, Jakob Tougaard   +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

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, Yudai Kawano, Taketo Kubo, Tsuyoshi Kuwahara, Hayao Kobayashi   +4 more
doaj   +1 more source

Echolocation activity of harbour porpoises, Phocoena phocoena, shows seasonal artificial reef attraction despite elevated noise levels close to oil and gas platforms

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, Jonas Teilmann, Danuta M. Wisniewska, Jeppe Dalgaard Balle, Matthieu Delefosse, Floris M. vanBeest   +5 more
doaj   +1 more source

Antibiotic Resistance of Bacteria in Two Marine Mammal Species, Harbor Seals and Harbor Porpoises, Living in an Urban Marine Ecosystem, the Salish Sea, Washington State, USA

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, Dyanna M. Lambourn, Jessica L. Huggins, Joseph K. Gaydos, Sandra Dubpernell, Susan Berta, Jennifer K. Olson, Victoria Souze, Alysha Evans, Betsy Carlson, Mandi Johnson, Rachel Mayer, Cathy King, Alyssa Scott   +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, Tomonari Akamatsu, Kexiong Wang, Ding Wang   +3 more
doaj   +1 more source

Lungworm infections in harbour porpoises (Phocoena phocoena) in the German Wadden Sea between 2006 and 2018, and serodiagnostic tests

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, Eligius Everaarts, Paulien Bunskoek, Martin Haulena, Andrea Springer, Kristina Lehnert, Jan Lakemeyer, Ursula Siebert, Christina Strube   +8 more
doaj   +1 more source

Indication of lethal interactions between a solitary bottlenose dolphin (Tursiops truncatus) and harbor porpoises (Phocoena phocoena) in the German Baltic Sea

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, Philip Claus, Peter Wohlsein, Tina Kesselring, Jan Lakemeyer, Anja Reckendorf, Marco Roller, Ralph Tiedemann, Ursula Siebert   +8 more
doaj   +1 more source

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