Results 41 to 50 of about 272,872 (323)
Polar bears are inefficient predators of seabird eggs
Royal Society Open Science, 2021 Climate-mediated sea-ice loss is disrupting the foraging ecology of polar bears (Ursus maritimus) across much of their range. As a result, there have been increased reports of polar bears foraging on seabird eggs across parts of their range.
Patrick M. Jagielski +5 more
doaj +1 more source
ToxinsPlants store chemical defenses that act as toxins against herbivores, such as toxic isothiocyanates (ITCs) in Brassica plants, hydrolyzed from glucosinolate (GLS) precursors.
Suman Chakraborty, Stefan Schuster
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Insight into the kinematics of blue whale surface foraging through drone observations and prey data [PDF]
PeerJ, 2020 To understand how predators optimize foraging strategies, extensive knowledge of predator behavior and prey distribution is needed. Blue whales employ an energetically demanding lunge feeding method that requires the whales to selectively feed where ...
Leigh G. Torres +3 more
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Polygamy in the Marsh Harrier, Circus aeruginosus: Individual Variation in Hunting Performance and Number of Mates [PDF]
, 1982 1. Theories postulating that sexual task differentiation may lead to polygamy such that the sex investing the least effort in raising the offspring, engages in simultaneous matings, contrast with polygyny in raptors where the male provides most of the ...
Altenburg, Wibe, +3 more
core +1 more source
The movement of a forager: Strategies for the efficient use of resources [PDF]
, 2016 We study a simple model of a foraging animal that modifies the substrate on which it moves. This substrate provides its only resource, and the forager manage it by taking a limited portion at each visited site.
Abramson, Guillermo +2 more
core +2 more sources
Prey body size mediates the predation risk associated with being "odd" [PDF]
, 2014 Despite selection pressures on prey animals to maintain phenotypically homogeneous groups, variation in phenotype within animal groups is commonly observed.
Downing, Beatrice +2 more
core +2 more sources
Testing the habituation assumption underlying models of parasitoid foraging behavior [PDF]
PeerJ, 2017 Background Habituation, a form of non-associative learning, has several well-defined characteristics that apply to a wide range of physiological and behavioral responses in many organisms.
Paul K. Abram +4 more
doaj +2 more sources
Frontiers in Ecology and Evolution, 2022 Foraging animals need to quickly assess the costs and benefits of different foraging decisions, including resource quantity, quality, preference, ease of access, dispersion, distance, and predation risk.
T. Jean M. Arseneau-Robar +9 more
doaj +1 more source
Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors
Advanced Science, EarlyView.Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon +10 more
wiley +1 more source
Evolutionary Psychology, 2015 This article describes a software tool called “Pursuit” that is intended to be used for both research and teaching on the topic of optimal foraging theory.
Brian M. Wood, James Holland Jones
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