Results 51 to 60 of about 272,872 (323)

Predicting trophic relations in ecological networks: a test of the Allometric Diet Breadth Model [PDF]

open access: yes, 2009
Few of food web theory hypotheses/predictions can be readily tested using empirical data. An exception is represented by simple probabilistic models for food web structure, for which the likelihood has been derived.
Allesina, Stefano
core  

On the Origin of Risk Sensitivity: the Energy Budget Rule Revisited

open access: yes, 2015
The risk-sensitive foraging theory formulated in terms of the (daily) energy budget rule has been influential in behavioural ecology as well as other disciplines.
Lim, Ik Soo   +2 more
core   +1 more source

An evolutionarily stable joining policy for group foragers [PDF]

open access: yes, 2005
For foragers that exploit patchily distributed resources that are challenging to locate, detecting discoveries made by others with a view to joining them and sharing the patch may often be an attractive tactic, and such behavior has been observed across ...
Broom, M., Fraser, C., Ruxton, G. D.
core   +3 more sources

Hungry for Knowledge: Octopamine Signaling Regulates Hunger‐Enhanced Olfactory Learning

open access: yesAdvanced Science, EarlyView.
Researchers demonstrate that hunger state facilitates both aversive and appetitive olfactory learning. Two distinct octopamine signaling pathways are involved in aversive or appetitive memory formation in the hunger state. And, hunger state also facilitates the formation of both types of memories via an evolutionarily conserved norepinephrine (the ...
Huijuan Zhao   +14 more
wiley   +1 more source

Optimal foraging theory and economics: a historical note [PDF]

open access: yes, 2017
This study sheds a light on economic roots of optimal foraging/mating theory. Two examples show graphical optimisation models of behavioural ecology that are identical to much older ones of economics.
Dagg, Joachim
core  

A marker of biological ageing predicts adult risk preference in European starlings, Sturnus vulgaris [PDF]

open access: yes, 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

Optimal search behavior and classic foraging theory

open access: yesJournal of Physics A: Mathematical and Theoretical, 2009
12 páginas, 1 figura. Random walk methods and diffusion theory pervaded ecological sciences as methods to analyze and describe animal movement. Consequently, statistical physics was mostly seen as a toolbox rather than as a conceptual framework that could contribute to theory on evolutionary biology and ecology.
Bartumeus, Frederic, Catalán, Jordi
openaire   +2 more sources

Modern and Ancient Genomes Reveal Neolithic Paternal Expansions of Millet and Rice Farmers and Demic Diffusion from China into Mainland Southeast Asia

open access: yesAdvanced Science, EarlyView.
This study clarifies the genetic patterns of paternal lineages across East Asia and Mainland Southeast Asia. Han populations are relatively homogeneous, whereas southern ethnolinguistic minorities display regional structures. Shared Y‐chromosome lineages indicate Neolithic expansions and extensive north‐south gene flow, supporting demic diffusion ...
Yunhui Liu   +15 more
wiley   +1 more source

The role of mathematical modelling in understanding prokaryotic predation

open access: yesFrontiers in Microbiology, 2022
With increasing levels of antimicrobial resistance impacting both human and animal health, novel means of treating resistant infections are urgently needed.
J. Kimberley Summers   +2 more
doaj   +1 more source

2023–2027 CAP First Pillar Reform and Livestock Sector: Production and Economic Impacts on Italian Specialized Dairy Cattle Farms

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The present study uses an agroeconomic supply model to assess the impacts of 2023–2027 CAP on Italian specialized dairy cattle farms. The model considers the voluntary choice of Eco‐Scheme 1, specifically addressed to livestock farms, through the implementation of binary variables.
Davide Dell'Unto, Raffaele Cortignani
wiley   +1 more source

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