Results 31 to 40 of about 21,397 (264)

Sexing From Seawater: Application of Environmental DNA Beyond Species Detection for Cetaceans

Environmental DNA
Anthropogenic pressures on marine ecosystems are intensifying, highlighting the need to bridge knowledge gaps for species at risk. Data deficiencies, particularly for species recovering from historic declines, such as marine megafauna like whales, hinder
Chloe Victoria Robinson, Emma June Laqua, Adam Warner, Gary J. Sutton, Michael W. D. Judson, Karina Dracott   +5 more
doaj   +1 more source

Spectral reflectance of whale skin above the sea surface: a proposed measurement protocol

Remote Sensing in Ecology and Conservation, 2020
Great whales have been detected using very‐high‐resolution satellite imagery, suggesting this technology could be used to monitor whales in remote areas.
Hannah C. Cubaynes, W. Gareth Rees, Jennifer A. Jackson, Michael Moore, Todd L. Sformo, William A. McLellan, Misty E. Niemeyer, John C. George, Julie van derHoop, Jaume Forcada, Phil Trathan, Peter T. Fretwell   +11 more
doaj   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

The Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto, João Felipe Leal Kaiuca, Adriana Itatí Olivares, William Corrêa Tavares   +3 more
wiley   +1 more source

A geometric morphometric approach for detecting different reproductive stages of a free-ranging killer whale Orcinus orca population

Scientific Reports
The expansion of drone-based aerial imagery has facilitated an increase in data obtained from free-ranging marine mammal populations, in particular cetacean species.
Chloe V. Robinson, Brittany C. Visona-Kelly   +1 more
doaj   +1 more source

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

The Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar, Cristián Gutiérrez‐Ibáñez, Hady George, Thomas R. Holtz Jr., Darren Naish, Grant R. Hurlburt   +5 more
wiley   +1 more source

Whale grief: Episodes I + II

Performance Philosophy
In this piece, Laura Cull Ó Maoilearca offers two stories that approach the experience of grief and loss from an interspecies perspective with a particular focus on whales.
Laura Cull Ó Maoilearca
doaj   +1 more source

Abundance of whales in West and East Greenland in summer 2015

NAMMCO Scientific Publications, 2019
An aerial line transect survey of whales in West and East Greenland was conducted in August-September 2015. The survey covered the area between the coast of West Greenland and offshore (up to 100 km) to the shelf break.
Rikke Guldborg Hansen, Tenna K. Boye, Rasmus S. Larsen, Nynne H. Nielsen, Outi Tervo, Rasmus D. Nielsen, Marianne H. Rasmussen, Mikkel H. S. Sinding, Mads Peter Heide-Jørgensen   +8 more
doaj   +1 more source

Groundtruthing of pelagic forage fish detected by hydroacoustics in a whale feeding area using environmental DNA

Environmental DNA, 2020
Conservation of whales, considered as umbrella species in marine environments, requires to be able to understand their relationships with ecosystem components such as prey species, including pelagic fish. However, studying such relationships in nature is
Chloé Suzanne Berger, Bérénice Bougas, Samuel Turgeon, Sophia Ferchiou, Nadia Ménard, Louis Bernatchez   +5 more
doaj   +1 more source

Killer whales

Current Biology, 2023
Michael Weiss and Darren Croft introduce Orcas (Orcinus orca) also known as killer whales.
Weiss, MN, Croft, DP
openaire   +3 more sources

Early stages of tooth development in the harbor porpoise Phocoena phocoena

The Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes, Lennart Müller‐Thomsen, Stefan Huggenberger   +2 more
wiley   +1 more source