Results 11 to 20 of about 2,362 (131)

Effects of Recreational Boats on Harbour Porpoise Swimming Speed and Surfacing Interval Investigated by Two Synchronised UAVs [PDF]

Ecology and Evolution
Cetaceans are negatively affected by anthropogenic activities, including acoustic and physical disturbance from boat traffic. Behavioural responses to such disturbances are context‐dependent, and site‐specific insights are needed for effective local ...
J. Till, V. Palmqvist, E. N. Wilk, P. Carlsson, J. Stedt   +4 more
doaj   +2 more sources

Rising competition among North Sea mammalian top predators: a multi-method perspective on trophic ecology [PDF]

Scientific Reports
Top predators are crucial in shaping ecosystem dynamics by regulating key processes such as prey populations, energy transfer, and community structure, particularly in systems where multiple species compete for the same resources.
Eileen Heße, Joy Ometere Boyi, Krishna Das, Kristina Lehnert, Mathilde Piette, Marianna Pinzone, Ursula Siebert, Anita Gilles   +7 more
doaj   +2 more sources

Two Strategies for Researching the Endangered Yangtze Finless Porpoises Suggest Data‐Poor Areas Are Worthy of Greater Conservation Efforts [PDF]

Ecology and Evolution
The distribution and abundance of species are crucial components of their population ecology and serve as the foundation for effective conservation efforts.
Yi Lu, Hongyan Bi, Weijie Jiang, Chong Cui, Jing Zhu, Pei Wang, Xinrong Xu, Guang Yang, Wei Chen, Zhengfei Wang   +9 more
doaj   +2 more sources

Historical Range Contraction and Extent of Harbour Porpoises (Phocoena phocoena) in the Baltic Sea Revealed by Archival Newspapers [PDF]

Ecology and Evolution
Over the past several centuries, the Baltic Proper harbour porpoise (Phocoena phocoena) has undergone significant population declines, resulting in its current IUCN classification as critically endangered.
M. Aiken, P. Erikson, C. Kinze, J. Carlström   +3 more
doaj   +2 more sources

Transcriptomic insights into the immune responses of the lung and muscle of non-healthy harbor porpoises (Phocoena phocoena) [PDF]

Frontiers in Immunology
IntroductionThe harbor porpoise populations of the North and Baltic Seas are highly impacted by human activities, including underwater-radiated noise, fisheries and pollution.
Eda Merve Dönmez, Eda Merve Dönmez, Andrej Fabrizius, Ursula Siebert   +3 more
doaj   +2 more sources

The first complete hand-rearing of two neonatal finless porpoises. [PDF]

PLoS ONE
Hand-rearing of marine mammals is an essential technique for the husbandry of orphans in captivity or the wild, especially endangered cetacean species.
Masahiko Kasamatsu, Kazuhiro Hasegawa, Ikuo Wakabayashi, Masami Furuta, Hiroki Inoue, Hidetomo Iwano   +5 more
doaj   +2 more sources

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) [PDF]

The Anatomical Record, Volume 309, Issue 7, Page 1797-1820, July 2026.
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
Jean‐Marie Graïc, Tommaso Gerussi, Bruno Cozzi, Rebecca M. Boys, Brian Chin Wing Kot, Matthew R. Perrott, Kane Fleury, Tabris Yik To Chung, Henry Chun Lok Tsui, Emma Burns, Trudi Webster, Stuart Hunter, Emma L. Betty, Odette Howarth, Carolina Loch, Sophie White, Steve Dawson, William Rayment, Ros Cole, Derek Cox, Tom Waterhouse, Hannah Hendriks, Anton van Helden, Muriel Johnstone, Ramari Oliphant Stewart, R. Ewan Fordyce, Karen A. Stockin   +26 more
wiley   +2 more sources

The Foe You Know: Observations of Interspecific Interactions Between Small Cetaceans and Northern Resident Killer Whales (Orcinus orca) in the Northeast Pacific [PDF]

Ecology and Evolution
We documented the first aerial observations of interspecific interactions of fish‐eating, northern resident killer whales (Orcinus orca) with two small cetacean species, Dall's porpoises (Phocoenoides dalli) and Pacific white‐sided dolphins ...
Brittany C. Visona‐Kelly, Lance G. Barrett‐Lennard   +1 more
doaj   +2 more sources

Reading between the lines: Novel insights on wild Pacific harbour porpoise (Phocoena phocoena vomerina) social communication through narrow-band high frequency click trains. [PDF]

PLoS ONE
For cetaceans that produce narrow-band high-frequency click trains such as the Pacific harbour porpoise (Phocoena phocoena vomerinae), social acoustic behavior is poorly understood.
Amy Migneault, Karina Dracott, Nick Tregenza, Chloe V Robinson   +3 more
doaj   +2 more sources

Diphyllobothrium stemmacephalum infections in harbor porpoises (Phocoena Phocoena) in German waters [PDF]

International Journal for Parasitology: Parasites and Wildlife
Harbor porpoises (Phocoena) are definitive hosts for intestinal Diphyllobothrium sp. cestodes, zoonotic parasites with a heterogeneous life cycle and fishes as second intermediate hosts.
Lotte C. Striewe, Peter Wohlsein, Ursula Siebert, Kristina Lehnert   +3 more
doaj   +2 more sources