Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Inclusive Fitness

Inclusive Fitness

Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.

Production Efficiency

Production Efficiency

Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).

Types of Selection

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...

Competition

Competition

When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.Intraspecific competition, which occurs between individuals of the same species, serves as a natural mechanism for regulating population size. Too much...

Predator-Prey Interactions

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.Although predation is commonly associated with carnivory, for...

Limits to Natural Selection

Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.For one, natural selection can only act upon existing genetic variation. Hypothetically, redtusks may enhance elephant survival by deterring ivory-seeking poachers. However, if there are no gene variants—or alleles—for redtusks, natural selection cannot increase the prevalence of...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Bumble bees that follow a stricter routine innovate less: Foraging behaviors, environmental complexity, and how they relate to novel problem solving.

bioRxiv : the preprint server for biology·2026

Same author

Optimal competitors: the balance of attraction and choices of mutualists, like pollinators, drives facilitation and may promote crop pollination.

Proceedings. Biological sciences·2025

Same author

Collective search in ants: Movement determines footprints, and footprints influence movement.

PloS one·2024

Same author

Ants combine systematic meandering and correlated random walks when searching for unknown resources.

iScience·2023

Same author

Injected serotonin decreases foraging aggression in black widow spiders (Latrodectus hesperus), but dopamine has no effect.

Behavioural processes·2022

Same author

Distributing Defenses: How Resource Defendability Shapes the Optimal Response to Risk.

The American naturalist·2022

Same journal

A developmental shift in glucocorticoid receptor expression preserves glucocorticoid sensitivity in the adult suprachiasmatic nucleus.

PLoS biology·2026

Same journal

Sequential neural dynamics underlie unconscious integration and conscious perception of visual stimuli.

PLoS biology·2026

Same journal

Engineering resilient gene drives for sustainable malaria control by predicting, testing and overcoming target site resistance in Anopheles gambiae.

PLoS biology·2026

Same journal

Shared memories of event details in the human brain are altered by misinformation and test expectations.

PLoS biology·2026

Same journal

Resistance potentiators: Evolutionary catalysts of antibiotic resistance.

PLoS biology·2026

Same journal

The cell cloud: Adopting systems biology concepts in the era of single-cell immunology.

PLoS biology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 2, 2026

Techniques for Investigating the Anatomy of the Ant Visual System

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

Specialization does not predict individual efficiency in an ant.

Anna Dornhaus¹

¹Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, United States of America. dornhaus@email.arizona.edu

|November 21, 2008

Summary

This summary is machine-generated.

In ants, worker specialization doesn't guarantee increased efficiency. Task allocation within colonies appears unrelated to individual worker ability, challenging the "master of none" hypothesis for division of labor.

More Related Videos

Visual Classical Conditioning in Wood Ants

Visual Classical Conditioning in Wood Ants

Published on: October 5, 2018

A Visual Guide for Studying Behavioral Defenses to Pathogen Attacks in Leaf-Cutting Ants

A Visual Guide for Studying Behavioral Defenses to Pathogen Attacks in Leaf-Cutting Ants

Published on: October 12, 2018

Related Experiment Videos

Last Updated: Jun 2, 2026

Techniques for Investigating the Anatomy of the Ant Visual System

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

Visual Classical Conditioning in Wood Ants

Visual Classical Conditioning in Wood Ants

Published on: October 5, 2018

A Visual Guide for Studying Behavioral Defenses to Pathogen Attacks in Leaf-Cutting Ants

A Visual Guide for Studying Behavioral Defenses to Pathogen Attacks in Leaf-Cutting Ants

Published on: October 12, 2018

Area of Science:

Behavioral Ecology
Social Insect Biology
Evolutionary Biology

Background:

Division of labor is key to social insect success.
Task allocation mechanisms are well-studied.
The assumption that specialists outperform generalists is rarely tested.

Purpose of the Study:

To test the "Jack-of-all-trades is master of none" hypothesis in ants.
To quantify worker efficiency across different tasks.
To investigate if task specialization predicts efficiency in Temnothorax albipennis.

Main Methods:

Quantified worker efficiency (work completed per time) in four tasks: foraging, material collection, and brood transport.
Assessed worker specialization, overall activity, and task initiation delay.
Analyzed efficiency in relation to worker rank and colony size.

Main Results:

Individual worker efficiency was not predicted by task specialization.
Specialization did not predict efficiency in three tasks; specialists performed worse in a fourth.
Worker allocation to tasks was unrelated to individual ability, regardless of colony size.

Conclusions:

In ants without morphological castes, behavioral specialization does not enhance individual efficiency.
Colonies do not optimize task allocation based on worker ability.
The adaptive benefits of behavioral specialization and task choice remain unclear.