Results 61 to 70 of about 25,770 (241)

Close encounters of the friendly kind: pacific between‐group interactions in primates

Biological Reviews, EarlyView.
ABSTRACT While intergroup conflict features prominently in the behavioural ecology literature, its antonym, intergroup peace, has been a rather neglected phenomenon until recently. Neighbourly relations and affiliative interactions are far from uncommon.
Cyril C. Grueter, Luca Pozzi
wiley   +1 more source

Crowdsourcing modern and historical data identifies sperm whale (Physeter macrocephalus) habitat offshore of south-western Australia

Frontiers in Marine Science, 2016
The distribution and use of pelagic habitat by sperm whales (Physeter macrocephalus) is poorly understood in the south-eastern Indian Ocean off Western Australia.
Christopher Michael Johnson, Christopher Michael Johnson, Christopher Michael Johnson, Lynnath Elizabeth Beckley, Halina Kobryn, Genevieve Ellen Johnson, Iain Kerr, Roger Payne   +7 more
doaj   +1 more source

How is the third jaw joint in whales different? Diverse modes of articulation between the jaws of whales

Journal of Anatomy, EarlyView.
This study conducts the first comprehensive morphological investigation of the mandibular symphysis in whales. Using gross anatomical observation and CT cross‐sectional data, we describe diverse joint morphologies across 74 extant and fossil cetacean taxa. Toothed whales exhibit unfused, partially fused, or fully fused symphyses.
Rebecca J. Strauch, Nicholas D. Pyenson, Carlos Mauricio Peredo   +2 more
wiley   +1 more source

Cephalopods from the stomachs of sperm whales taken off California [PDF]

, 1989
Cephalopod remains (beaks, bodies, and parts of bodies) were collected from the stomachs of 157 sperm whales (Physeter macrocephalus) taken off central California (lat. 37°-39°N).
Fiscus, Clifford H., Rice, Dale W., Wolman, Allen A.   +2 more
core  

KILLER WHALE PREDATION ON SPERM WHALES: OBSERVATIONS AND IMPLICATIONS

Marine Mammal Science, 2001
AbstractIn October 1997 we observed a herd of approximately 35 killer whales (Orcinus orca) attack a pod of nine sperm whales (Physeter macrocephalus) 130 km off the coast of central California. During the four hours we watched, adult female killer whales, including some with calves, attacked in waves of four to five animals in what was apparently a ...
Pitman, Robert L., Ballance, Lisa T., Mesnick, Sarah I., Chivers, Susan J.   +3 more
openaire   +2 more sources

The larger the cetacean, the more stationary their sleep? Thermoregulatory constraints on the sleep behaviour of captive cetaceans

Journal of Zoology, EarlyView.
Cetaceans face thermal challenges when sleeping underwater. Our study found that smaller body size correlated with more swim sleep and less stationary sleep, while the opposite was true for larger cetaceans. Additionally, bottlenose dolphins increased swim sleep at lower ambient temperatures, suggesting a sleep strategy influenced by body size and ...
K. Aota, Y. Sekiguchi, D. M. Kikuchi
wiley   +1 more source

Abundance and Distribution of Sperm Whales in the Canary Islands: Can Sperm Whales in the Archipelago Sustain the Current Level of Ship-Strike Mortalities?

PLoS ONE, 2016
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, Tim P Lewis, Daniel P Zitterbart, Omar Álvarez, Ana Tejedor, Natacha Aguilar Soto   +5 more
doaj   +1 more source

Depredating sperm whales in the Gulf of Alaska: local habitat use and long distance movements across putative population boundaries

Endangered Species Research, 2014
Satellite tags were attached to 10 sperm whales Physeter macrocephalus (1 whale was tagged in 2 different years) to determine the movements of sperm whales involved in removal of sablefish from longline fishing gear in the Gulf of Alaska (GOA).
JM Straley, GS Schorr, AM Thode, J Calambokidis, CR Lunsford, EM Chenoweth, VM O’Connell, RD Andrews   +7 more
doaj   +1 more source

Using Ancient DNA Analysis and Radiocarbon Dating to Determine the Provenance of an Unusual Whaling Artifact

Frontiers in Ecology and Evolution, 2020
Natural history collections provide a critical temporal view of past biodiversity and are instrumental in the study of extinct populations. However, the value of historical specimens relies on correct species identification, collection date and ...
Caitlin Mudge, Rebecca Dallwitz, Bastien Llamas, Jeremy J. Austin   +3 more
doaj   +1 more source

Enhancing AIS to Improve Whale-Ship Collision Avoidance and Maritime Security [PDF]

, 2009
Whale-ship strikes are of growing worldwide concern due to the steady growth of commercial shipping. Improving the current situation involves the creation of a communication capability allowing whale position information to be estimated and exchanged ...
Fall, Kevin, McGillivary, Philip A, Schwehr, Kurt   +2 more
core   +2 more sources