Results 31 to 40 of about 10,415 (162)

Killer whale (Orcinus orca) photo-identification in the eastern Canadian Arctic [PDF]

open access: yesPolar Research, 2011
We identified individual killer whales (Orcinus orca) using recent (2004–09) photographs to obtain a minimum count of whales that use eastern Canadian Arctic waters.
Brent G. Young   +2 more
doaj   +1 more source

Killer Whale (Orcinus orca) Predation on Beaked Whales (Mesoplodon spp.) in the Bremer Sub-Basin, Western Australia.

open access: yesPLoS ONE, 2016
Observations of killer whales (Orcinus orca) feeding on the remains of beaked whales have been previously documented; however, to date, there has been no published account of killer whales actively preying upon beaked whales.
Rebecca Wellard   +5 more
doaj   +1 more source

Changes in dive behaviour during naval sonar exposure in killer whales, long-finned pilot whales, and sperm whales. [PDF]

open access: yes, 2012
Anthropogenic underwater sound in the environment might potentially affect the behavior of marine mammals enough to have an impact on their reproduction and survival.
Tyack, P.L.   +31 more
core   +2 more sources

Orca hydrofoil shape optimization using Bezier curve and artificial neural network – multiple objective genetic algorithm for low flow velocity

open access: yesJournal of King Saud University: Engineering Sciences
Tidal energy is a clean and predictable power source commonly harnessed using horizontal-axis tidal turbines. The power generation process of these turbines is influenced by various elements, including the hydrofoil performance metrics such as the lift ...
Muhammad Ihsan Masykur, Harinaldi
doaj   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu   +5 more
wiley   +1 more source

Winter records of killer whales (Orcinus orca) in the waters of the Wilhelm archipelago, West Antarctica

open access: yesTheriologia Ukrainica, 2022
Killer whales (KWs) are apex marine predators. In Antarctica, they have diverse trophic interactions and belong to five ecotypes that have differences in morphology, ecology, and acoustic repertoire.
Оksana Savenko
doaj   +1 more source

Maximizing eDNA detections of rare marine organisms: A case study of a delphinid species

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Environmental DNA (eDNA) is an emerging tool for surveying marine organisms. Advances in molecular assay designs and bioinformatic methods provide new opportunities for detecting rare species; however, overcoming methodological challenges of rare species detection remains an important obstacle for the widespread deployment of eDNA methods for ...
Nastassia V. Patin   +12 more
wiley   +1 more source

Corpses as Repositories of Information and Funerals as Information Centres: Why Natural Selection Favours the Bereaved

open access: yesEthology, EarlyView.
Corpses are repositories of information about the cause of death. The distress of the bereaved acts as an honest signal drawing conspecifics to the body, enabling them to learn quickly about the death, adapt their behaviour, and spread knowledge of threats across multiple social levels.
Jacob Dembitzer, Dror Ben‐Ami
wiley   +1 more source

Косатки Антарктики: распределение и некоторые вопросы биологии

open access: yesУкраїнський антарктичний журнал, 2017
Проанализированы данные по добыче косаток одесскими китобойными флотилиями в период 1961-1979 гг. Указан объем добычи - 323 косатки. Размеры 205 самцов варьировали от 4.5 м до 9.0 м, средняя их длина соста­вила 7.26 м. Размеры 118 самок колебались от 3.7
Yu. A. Mikhalev
doaj   +1 more source

Sociability Under Anthropogenic Change: From Individual Behaviour to Population‐Level Consequences

open access: yesEcology and Evolution, Volume 16, Issue 10, October 2026.
Our review synthesises empirical and theoretical research on how anthropogenic environmental change reshapes animal social behaviour from individuals to populations. We use sociability as an individual‐level lens, distinguishing context‐dependent expression from repeatable interindividual differences and linking both to social relationships, network ...
Paulina Kowalczyk, Barbara Pietrzak
wiley   +1 more source

Home - About - Disclaimer - Privacy