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

Migration

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.

Convergent Evolution

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.The structures that arise from convergent evolution are called analogous structures. They are similar in function even if they are dissimilar in structure. Further, structures can be analogous while also...

Speciation Rates

Speciation Rates

Speciation can proceed at markedly different rates, and evolutionary biologists commonly describe these differences through the models of gradualism and punctuated equilibrium. Both patterns explain how new species arise, but they differ in the tempo and continuity of evolutionary change. In both cases, evolutionary change arises from heritable variation within populations, with natural selection often shaping traits that improve survival and reproduction under specific environmental conditions.

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...

Gastrulation

Gastrulation

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...

Conservation of Declining Populations

Conservation of Declining Populations

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.

You might also read

Related Articles

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

Sort by

Same author

The PerioGene North Study Uncovers Serum Proteins Related to Periodontitis.

Journal of dental research·2024

Same author

Phosphorus-31: A table-top method for 3D B<sub>1</sub>-field amplitude and phase measurements.

Biochimica et biophysica acta. Biomembranes·2024

Same author

Brain Parcellation Repeatability and Reproducibility Using Conventional and Quantitative 3D MR Imaging.

AJNR. American journal of neuroradiology·2023

Same author

Phenotype Harmonization in the GLIDE2 Oral Health Genomics Consortium.

Journal of dental research·2022

Same author

Quantitative MRI using relaxometry in malignant gliomas detects contrast enhancement in peritumoral oedema.

Scientific reports·2020

Same author

Improved Precision of Automatic Brain Volume Measurements in Patients with Clinically Isolated Syndrome and Multiple Sclerosis Using Edema Correction.

AJNR. American journal of neuroradiology·2017

Search research articles

Related Experiment Video

Updated: Jun 5, 2026

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Published on: March 8, 2020

The evolution of partial migration in Birds.

¹Department of Wildlife Ecology, Swedish University of Agricultural Sciences, S-901 83 Umeå, Sweden.

Trends in Ecology & Evolution

|January 14, 2011

Summary

Partial migration, where some animals migrate and others stay put, is common. Research is ongoing to understand if migrants and residents have equal fitness or if one group is disadvantaged.

Area of Science:

Ecology
Evolutionary Biology
Behavioral Ecology

Background:

Partial migration, a strategy where only a fraction of a population migrates, is observed across diverse animal taxa.
This phenomenon has been documented in birds for decades, but its evolutionary maintenance and fitness implications are still under investigation.
Key questions involve the fitness balance between migratory and sedentary individuals and the proximate mechanisms regulating these behaviors.

Purpose of the Study:

To explore the fitness consequences of partial migration.
To investigate the regulatory mechanisms behind migratory and sedentary behaviors within a population.
To contribute to a more complete understanding of the evolution and maintenance of partial migration.

Main Methods:

More Related Videos

Analysis of Neural Crest Migration and Differentiation by Cross-species Transplantation

Analysis of Neural Crest Migration and Differentiation by Cross-species Transplantation

Published on: February 7, 2012

Creating Avian Forebrain Chimeras to Assess Facial Development

Creating Avian Forebrain Chimeras to Assess Facial Development

Published on: February 18, 2021

Related Experiment Videos

Last Updated: Jun 5, 2026

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Published on: March 8, 2020

Analysis of Neural Crest Migration and Differentiation by Cross-species Transplantation

Analysis of Neural Crest Migration and Differentiation by Cross-species Transplantation

Published on: February 7, 2012

Creating Avian Forebrain Chimeras to Assess Facial Development

Creating Avian Forebrain Chimeras to Assess Facial Development

Published on: February 18, 2021

This study synthesizes existing research on partial migration in birds.

It examines theoretical frameworks regarding fitness balancing and proximate regulation.

Comparative analysis of different populations and taxa is implicitly involved.

Main Results:

The fitness of migratory versus sedentary individuals within a population is a central unresolved question.
Potential regulatory mechanisms include social dominance hierarchies or distinct genetic morphs with pre-programmed behaviors.
The maintenance of partial migration may involve complex interactions between fitness trade-offs and behavioral control.

Conclusions:

Partial migration is a complex phenomenon requiring further research into fitness dynamics and regulatory pathways.
Understanding the selective pressures and genetic underpinnings is crucial for explaining its persistence.
Future studies should focus on empirical tests of fitness equivalence and the role of social and genetic factors.