Results 71 to 80 of about 95,512 (346)

Cetacean mother-calf behavior observed from a small aircraft off Southern California. Animal Behavior and Cognition

Animal Behavior and Cognition, 2017
During early developmental stages, cetacean calves are dependent on their mothers for survival. Protection of young whales engaged in behaviors that are biologically important is critical for population recovery, so that appropriate management actions ...
Mari A. Smultea , Dagmar Fertl , Cathy E. Bacon , Meggie R. Moore , Vanessa R. James , Bernd Würsig   +5 more
doaj   +1 more source

A New Hybrid Whale Optimization Algorithm for Green Vehicle Routing Problem

Systems Science & Control Engineering, 2021
In recent years, issues on global warming and climate change have received public attention. One of the causes of this problem is carbon emissions in the transportation sector. Therefore, a proper route can reduce this problem.
Shanty Kusuma Dewi, Dana Marsetiya Utama
doaj   +1 more source

Microstructural differences in the osteochondral unit of terrestrial and aquatic mammals

eLife, 2023
During evolution, animals have returned from land to water, adapting with morphological modifications to life in an aquatic environment. We compared the osteochondral units of the humeral head of marine and terrestrial mammals across species spanning a ...
Irina AD Mancini, Riccardo Levato, Marlena M Ksiezarczyk, Miguel Dias Castilho, Michael Chen, Mattie HP van Rijen, Lonneke L IJsseldijk, Marja Kik, P René van Weeren, Jos Malda   +9 more
doaj   +1 more source

Discovery of sexual dimorphism of the laryngeal sac in the common minke whale Balaenoptera acutorostrata

The Anatomical Record, EarlyView.
Abstract Mysticetes, or baleen whales, have an air sac on the ventral surface of the larynx known as the “laryngeal sac.” The primary hypothesis regarding this structure's function is that it is involved in sound production. However, several other functions have been proposed, including air recycling, air storage, and even buoyancy control.
Gen Nakamura, Hiroko Yamada, Ayumi Hirose, Hikari Maeda, Joy S. Reidenberg, Hidehiro Kato, Shinho Park, Yoshihiro Fujise   +7 more
wiley   +1 more source

Virological Sampling of Inaccessible Wildlife with Drones

Viruses, 2018
There is growing interest in characterizing the viromes of diverse mammalian species, particularly in the context of disease emergence. However, little is known about virome diversity in aquatic mammals, in part due to difficulties in sampling.
Jemma L. Geoghegan, Vanessa Pirotta, Erin Harvey, Alastair Smith, Jan P. Buchmann, Martin Ostrowski, John-Sebastian Eden, Robert Harcourt, Edward C. Holmes   +8 more
doaj   +1 more source

Commentary: The missing sabertooth baculum—At what point might the absence of evidence reasonably be considered evidence of absence?

The Anatomical Record, EarlyView.
Abstract Most carnivorans and all modern felids have ossified bacula; however, no machairodont baculum has ever been identified. This is true despite the many fairly complete skeletons found around the world of several sabertooth taxa. Although the bacula of modern felids are much smaller than those of canoids (even the least weasel's baculum is longer
Adam Hartstone‐Rose
wiley   +1 more source

Using Computer Modelling and Virtual Reality to Explore the Ideological Dimensions of Thule Whalebone Architecture in Arctic Canada

Internet Archaeology, 2005
Arctic archaeologists have long suspected that the whalebones used to construct semi-subterranean winter houses by Thule culture peoples were symbolically resonant.
Peter C. Dawson, Richard Levy
doaj   +1 more source

Secondary ossification center induces and protects growth plate structure

eLife, 2020
Growth plate and articular cartilage constitute a single anatomical entity early in development but later separate into two distinct structures by the secondary ossification center (SOC). The reason for such separation remains unknown.
Meng Xie, Pavel Gol'din, Anna Nele Herdina, Jordi Estefa, Ekaterina V Medvedeva, Lei Li, Phillip T Newton, Svetlana Kotova, Boris Shavkuta, Aditya Saxena, Lauren T Shumate, Brian D Metscher, Karl Großschmidt, Shigeki Nishimori, Anastasia Akovantseva, Anna P Usanova, Anastasiia D Kurenkova, Anoop Kumar, Irene Linares Arregui, Paul Tafforeau, Kaj Fried, Mattias Carlström, András Simon, Christian Gasser, Henry M Kronenberg, Murat Bastepe, Kimberly L Cooper, Peter Timashev, Sophie Sanchez, Igor Adameyko, Anders Eriksson, Andrei S Chagin   +31 more
doaj   +1 more source

Timing is everything: Drivers of interannual variability in blue whale migration

Scientific Reports, 2019
Blue whales need to time their migration from their breeding grounds to their feeding grounds to avoid missing peak prey abundances, but the cues they use for this are unknown.
Angela R. Szesciorka, L. Ballance, A. Sirovic, Ally Rice, M. Ohman, J. Hildebrand, P. Franks   +6 more
semanticscholar   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source