Results 31 to 40 of about 6,087 (203)

Toward understanding the communication in sperm whales

iScience, 2022
Machine learning has been advancing dramatically over the past decade. Most strides are human-based applications due to the availability of large-scale datasets; however, opportunities are ripe to apply this technology to more deeply understand non-human communication.
Jacob Andreas, Gašper Beguš, Michael M. Bronstein, Roee Diamant, Denley Delaney, Shane Gero, Shafi Goldwasser, David F. Gruber, Sarah de Haas, Peter Malkin, Nikolay Pavlov, Roger Payne, Giovanni Petri, Daniela Rus, Pratyusha Sharma, Dan Tchernov, Pernille Tønnesen, Antonio Torralba, Daniel Vogt, Robert J. Wood   +19 more
openaire   +6 more sources

Cetacean acoustic occurrence on the US Atlantic Outer Continental Shelf from 2017 to 2020

Marine Mammal Science, Volume 39, Issue 1, Page 175-199, January 2023., 2023
Abstract Long‐term distribution data for cetaceans are lacking, inhibiting the ability of management bodies to assess trends and react appropriately. Such is true even along the US Atlantic Outer Continental Shelf (OCS) where previous passive acoustic monitoring programs have laid the groundwork for monitoring cetacean occurrence over a multidecadal ...
Katie A. Kowarski, S. Bruce Martin, Emily E. Maxner, Carmen B. Lawrence, Julien J.‐Y. Delarue, Jennifer L. Miksis‐Olds   +5 more
wiley   +1 more source

Karyotypes and idiograms of sperm and pygmy sperm whales [PDF]

Hereditas, 2009
The somatic chromosomes of the sperm whale, Physeter catodon L. and the pygmy sperm whale, Kogia breviceps Blainville, were studied. The chromosome number of both species is 2n=42. The sperm and pygmy sperm whales are the only cetaceans, so far recorded, with a chromosome number deviating from 2n=44.
Ulfur Arnason, Kurt Benirschke
openaire   +3 more sources

Estimating body mass of sperm whales from aerial photographs

Marine Mammal Science, Volume 39, Issue 1, Page 251-273, January 2023., 2023
Abstract Body mass is a fundamental feature of animal physiology. Although sperm whales (Physeter macrocephalus) are the largest toothed predators on earth, body mass is seldom included in studies of their ecophysiology and bioenergetics due to the inherent difficulties of obtaining direct measurements. We used UAV‐photogrammetry to estimate the weight
Maria Glarou, Shane Gero, Alexandros Frantzis, José María Brotons, Fabien Vivier, Paraskevi Alexiadou, Margalida Cerdà, Enrico Pirotta, Fredrik Christiansen   +8 more
wiley   +1 more source

Clicking throughout the year: sperm whale clicks in relation to environmental conditions off the west coast of South Africa

Endangered Species Research, 2020
Knowledge of cetacean occurrence and behaviour in southern African waters is limited, and passive acoustic monitoring has the potential to address this gap efficiently. Seasonal acoustic occurrence and diel-vocalizing patterns of sperm whales in relation
Shabangu, FW, Andrew, RK
doaj   +1 more source

Factors associated with the differential distribution of cetaceans linked with deep habitats in the Western Mediterranean Sea

Scientific Reports, 2022
Deep-habitat cetaceans are generally difficult to study, leading to a limited knowledge of their population. This paper assesses the differential distribution patterns of three deep-habitat cetaceans (Sperm whale—Physeter macrocephalus, Risso’s dolphin ...
Estefanía Torreblanca, José-Carlos Báez, Raimundo Real, David Macías, Salvador García-Barcelona, Francisco Ferri-Yañez, Juan-Antonio Camiñas   +6 more
doaj   +1 more source

Spatial and seasonal patterns in acoustic detections of sperm whales Physeter macrocephalus along the continental slope in the western North Atlantic Ocean

Endangered Species Research, 2018
The distribution and seasonal movements of sperm whales Physeter macrocephalus are poorly understood in the western North Atlantic Ocean, despite a long history of human exploitation of the species. Cetacean surveys in this region are typically conducted
Stanistreet, JE, Nowacek, DP, Bell, JT, Cholewiak, DM, Hildebrand, JA, Hodge, LEW, Van Parijs, SM, Read, AJ   +7 more
doaj   +1 more source

Skin condition of fin whales at Antarctic feeding grounds reveals little evidence for anthropogenic impacts and high prevalence of cookiecutter shark bite lesions

, 2023
Marine Mammal Science, Volume 39, Issue 1, Page 299-310, January 2023.
Helena Herr, Sacha Viquerat, Tobias Naujocks, Bertie Gregory, Abigail Lees, Fredi Devas   +5 more
wiley   +1 more source

Behaviour and vocalizations of two sperm whales (Physeter macrocephalus) entangled in illegal driftnets in the Mediterranean Sea.

PLoS ONE, 2021
Illegal driftnetting causes each year several entanglements and deaths of sperm whales in different Mediterranean areas, primarily in the Tyrrhenian Sea.
Monica Francesca Blasi, Valentina Caserta, Chiara Bruno, Perla Salzeri, Agata Irene Di Paola, Alessandro Lucchetti   +5 more
doaj   +1 more source

Stereotypical resting behavior of the sperm whale [PDF]

Current Biology, 2008
SummaryThough very little is known about sleep in wild cetaceans, toothed cetaceans in captivity sleep with one side of their brain at a time [1]. Such uni-hemispheric sleep is thought to enable swimming, voluntary breathing, predator avoidance and/or social contact during sleep at sea [2,3].
Kagari Aoki, Patrick J. O. Miller, Luke Rendell, Masao Amano   +3 more
openaire   +3 more sources