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Related Concept Videos

Migration00:53

Migration

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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.
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Conservation of Declining Populations02:07

Conservation of Declining Populations

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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.
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Optimal Foraging00:48

Optimal Foraging

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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.
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Gene Flow02:39

Gene Flow

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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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Hybrid Zones02:29

Hybrid Zones

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Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
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Types of Selection01:46

Types of Selection

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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...
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Related Experiment Video

Updated: Jun 6, 2025

Using Pharmacological Manipulation and High-precision Radio Telemetry to Study the Spatial Cognition in Free-ranging Animals
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Navigated range expansion promotes migratory culling.

Yi Zhang1, Qingjuan Hu1, Yingtong Su1

  • 1Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.

Proceedings of the National Academy of Sciences of the United States of America
|December 3, 2024
PubMed
Summary
This summary is machine-generated.

Host migration speed impacts viral spread. Faster bacterial movement during range expansion surprisingly reduces phage spread, potentially culling infections from migrating groups.

Keywords:
migratory cullingpattern formationrange expansionsynthetic biology

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Area of Science:

  • Microbiology
  • Ecology
  • Virology

Background:

  • Motile organisms expand territories, while nonmotile viruses rely on host migration for dispersal.
  • Host motility generally aids virus transmission, but migration can also reduce prevalence by removing infected individuals.

Purpose of the Study:

  • To investigate how host motility influences viral spread during range expansion using a bacteria-bacteriophage system.

Main Methods:

  • Utilized a bacteria-bacteriophage copropagation system to model range expansion.
  • Employed theoretical and experimental analyses to study host-virus dynamics.

Main Results:

  • Increased bacterial migration speed decreased phage spread during chemotaxis-driven expansion.
  • Navigated migration caused spatial sorting of infected and uninfected hosts at the expansion front.
  • Higher migration speeds led to preferential loss of infected cells, inhibiting viral spread and, at extreme speeds, complete phage elimination.

Conclusions:

  • Navigated host range expansion can lead to migratory culling of infectious diseases.
  • Host motility dynamics play a critical role in the spatial spread and prevalence of viral infections.