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Related Concept Videos

Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Energy Budgets00:51

Energy Budgets

Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
Ecological Niches02:02

Ecological Niches

All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
Predator-Prey Interactions02:39

Predator-Prey Interactions

Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations01:15

Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations

Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
What is Natural Selection?01:32

What is Natural Selection?

Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.

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Related Experiment Video

Updated: May 29, 2026

Foraging Path-length Protocol for Drosophila melanogaster Larvae
07:26

Foraging Path-length Protocol for Drosophila melanogaster Larvae

Published on: April 23, 2016

Optimal foraging for multiple nutrients in an unpredictable environment.

Alasdair I Houston1, Andrew D Higginson, John M McNamara

  • 1School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK.

Ecology Letters
|September 17, 2011
PubMed
Summary
This summary is machine-generated.

Organisms can balance multiple nutrient needs. A new model shows animals should focus on one food, then follow a border to meet all nutrient requirements.

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Quantification of Macronutrients Intake in a Thermogenetic Neuronal Screen using Drosophila Larvae
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Quantification of Macronutrients Intake in a Thermogenetic Neuronal Screen using Drosophila Larvae

Published on: June 11, 2020

Related Experiment Videos

Last Updated: May 29, 2026

Foraging Path-length Protocol for Drosophila melanogaster Larvae
07:26

Foraging Path-length Protocol for Drosophila melanogaster Larvae

Published on: April 23, 2016

Quantification of Macronutrients Intake in a Thermogenetic Neuronal Screen using Drosophila Larvae
07:24

Quantification of Macronutrients Intake in a Thermogenetic Neuronal Screen using Drosophila Larvae

Published on: June 11, 2020

Area of Science:

  • Behavioral Ecology
  • Mathematical Biology

Background:

  • Foraging theory traditionally focuses on single resource acquisition.
  • Existing models for multiple nutrients do not predict food selection sequences.

Discussion:

  • A new optimization model addresses two foods with two nutrients.
  • It assumes reproductive value decreases with distance from target nutrient intake.

Key Insights:

  • Nutrient space is divided into areas for exclusive consumption of one food.
  • Animals concentrate on one food until a border is reached, then follow it.

Outlook:

  • This strategy is observed across diverse organisms.
  • The model suggests a common fitness function underlies these foraging behaviors.