Results 31 to 40 of about 57,161 (195)
Dynamic optimal foraging theory explains vertical migrations of Bigeye tuna [PDF]
Ecology, 2016 AbstractBigeye tuna are known for remarkable daytime vertical migrations between deep water, where food is abundant but the water is cold, and the surface, where water is warm but food is relatively scarce. Here we investigate if these dive patterns can be explained by dynamic optimal foraging theory, where the tuna maximizes its energy harvest rate ...
Thygesen, Uffe Høgsbro +3 more
openaire +3 more sources
Footprints of information foragers: Behaviour semantics of visual exploration [PDF]
, 2002 Social navigation exploits the knowledge and experience of peer users of information resources. A wide variety of visual–spatial approaches become increasingly popular as a means to optimize information access as well as to foster and sustain a virtual ...
Chen, C +3 more
core +3 more sources
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
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
doaj +1 more source
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
Conservation & Society, 2011 Optimal Foraging Theory (OFT) is here applied to analyse the foraging behaviour of Brazilian artisanal fishers of the Atlantic coast (Itacuruçá and São Paulo Bagre villages) and of the inland Amazonian region (Jarauá and Ebenezer villages).
Priscila F.M. Lopes +5 more
doaj +1 more source
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
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
doaj +2 more sources
A marker of biological ageing predicts adult risk preference in European starlings, Sturnus vulgaris [PDF]
, 2018 Why are some individuals more prone to gamble than others? Animals often show preferences between 2 foraging options with the same mean reward but different degrees of variability in the reward, and such risk preferences vary between individuals ...
Andrews, Clare +5 more
core +3 more sources