Results 81 to 90 of about 57,621 (286)

Patterns of spinal motion, kinematic spaces and the land‐to‐sea transition in carnivorans

open access: yesThe Anatomical Record, EarlyView.
Using 3D reconstructions, we quantify intervertebral joint mobility to investigate how cervical, thoracic, and lumbar vertebral regions evolved distinct kinematic roles in pinnipeds. The findings reveal lineage‐specific adaptations for swimming and highlight the functional significance of vertebral joint flexibility in ecological transitions.
Juan Miguel Esteban   +3 more
wiley   +1 more source

Combining radio-telemetry and radar measurements to test optimal foraging in an aerial insectivore bird

open access: yeseLife
Optimal foraging theory posits that foragers adjust their movements based on prey abundance to optimize food intake. While extensively studied in terrestrial and marine environments, aerial foraging has remained relatively unexplored due to technological
Itai Bloch   +4 more
doaj   +1 more source

Wind field and sex constrain the flight speeds of central-place foraging albatrosses [PDF]

open access: yes, 2009
By extracting energy from the highly dynamic wind and wave fields that typify pelagic habitats, albatrosses are able to proceed almost exclusively by gliding flight.
Akira Fukuda   +12 more
core   +1 more source

Optimal Foraging: A Selective Review of Theory and Tests

open access: yesThe Quarterly Review of Biology, 1977
Beginning with Emlen (1966) and MacArthur and Pianka (1966) and extending through the last ten years, several authors have sought to predict the foraging behavior of animals by means of mathematical models. These models are very similar,in that they all assume that the fitness of a foraging animal is a function of the efficiency of foraging measured in
G. H. Pyke, H. R. Pulliam, E. L. Charnov
openaire   +2 more sources

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

open access: yesThe 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   +5 more
wiley   +1 more source

Wood mouse feeding effort and decision-making when encountering a restricted unknown food source [PDF]

open access: yes, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Barja, Isabel   +2 more
core   +2 more sources

Optimal Foraging Theory and the Psychology of Learning

open access: yesAmerican Zoologist, 1983
The development of optimization theory has made important contributions to the study of animal behavior. But the optimization approach needs to be integrated with other methods of ethology and psychology. For example, the ability to learn is an important component of efficient foraging behavior in many species, and the psychology of animal learning ...
openaire   +2 more sources

Effects of Replacing Alfalfa Hay With Barley Silage in High‐Concentrate Diets: Chewing Behavior, Ruminal Fermentation, Total‐Tract Digestibility, and Milk Production of Dairy Cows in Mid‐Lactation Phase

open access: yesAnimal Research and One Health, EarlyView.
We assessed lactation productivity in dairy cows when replacing alfalfa hay with barley silage. A 50% replacement increased feed intake, whereas total replacement improved nutrient conversion to milk. Barley silage can effectively replace alfalfa hay, enhancing sustainability and resilience in dairy production amid forage quality constraints and market
M. R. Naji‐Zavareh   +5 more
wiley   +1 more source

Review: Using physiologically based models to predict population responses to phytochemicals by wild vertebrate herbivores

open access: yesAnimal, 2018
To understand how foraging decisions impact individual fitness of herbivores, nutritional ecologists must consider the complex in vivo dynamics of nutrient–nutrient interactions and nutrient–toxin interactions associated with foraging.
J.S. Forbey   +7 more
doaj   +1 more source

Visualising and animating visual information foraging in context [PDF]

open access: yes, 2001
Optimal information foraging provides a potentially useful framework for modelling, analysing, and interpreting search strategies of users through a spatial-semantic interface.
Chen, C, Cribbin, T
core  

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