Results 71 to 80 of about 7,053 (220)
Ecological niches of three teuthophageous odontocetes in the northwestern Mediterranean Sea [PDF]
In the northwestern Mediterranean Sea, sperm whales, pilot whales and Risso's dolphins prey exclusively or preferentially on cephalopods. In order to evaluate their competition, we modelled their habitat suitability with the Ecological Niche Factor ...
E. Praca, A. Gannier
doaj
Sperm whales are present in the Canary Islands year-round, suggesting that the archipelago is an important area for this species in the North Atlantic.
Andrea Fais +5 more
doaj +1 more source
ABSTRACT For the effective conservation of coastal cetaceans, such as Indian Ocean humpback dolphin, Sousa plumbea, currently listed as “Endangered” by the International Union for the Conservation of Nature (IUCN), information on its life history is urgently required.
Stephanie Plön +3 more
wiley +1 more source
This study aimed at complementing studies of sperm whale social and vocal behaviour that were restricted to the Pacific Ocean. The characteristic multi-pulsed structure of sperm whale clicks allows for estimation of whales' size from measurements of ...
Antunes, Ricardo
core
This work was financially supported by the U. S. Office of Naval Research grant N00014‐12‐1‐0204, under the project “Multi‐study Ocean acoustics Human effects Analysis” (MOCHA). . L.
Miller, Patrick +7 more
core +1 more source
Bio-Inspired Covert Active Sonar Strategy
The covertness of the active sonar is a very important issue and the sonar signal waveform design problem was studied to improve covertness of the system.
Jiajia Jiang +8 more
doaj +1 more source
Killer Whales in the Central Tropical Pacific: Occurrence, Resightings, Morphology, and Acoustics
ABSTRACT Compared to their well‐studied coastal temperate counterparts, killer whales (Orcinus orca) in tropical‐subtropical and oceanic areas are under‐documented. We used sighting, photo‐identification, and acoustic data of killer whales in the central tropical Pacific (CTP), collected from multiple platforms between 2002 and 2023, to assess their ...
Marie C. Hill +4 more
wiley +1 more source
ABSTRACT This study investigated the occurrence and whistle characteristics of small odontocetes in Wakasa Bay and Aso Bay, located in the coastal waters of the Sea of Japan, where ecological data are limited. Passive acoustic monitoring using A‐tag and SoundTrap was conducted from 2022 to 2024, with detections on 8.8% and 12.4% of monitoring days at ...
Satoko S. Kimura +2 more
wiley +1 more source
A digital acoustic recording tag for measuring the response of wild marine mammals to sound
Definitive studies on the response of marine mammals to anthropogenic sound are hampered by the short surface time and deep-diving lifestyle of many species.
Johnson, Mark +5 more
core +1 more source
Intraspecific variation of cochlear morphology in bowhead and beluga whales
Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley +1 more source

