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Related Concept Videos

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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In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
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Conservation of Small Populations02:04

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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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Gene Evolution - Fast or Slow?02:05

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The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
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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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Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
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Targeted gene flow for conservation.

Ella Kelly1, Ben L Phillips1

  • 1School of Biosciences, University of Melbourne, Parkville, VIC 3010, Australia.

Conservation Biology : the Journal of the Society for Conservation Biology
|September 3, 2015
PubMed
Summary
This summary is machine-generated.

Conservation can harness rapid evolutionary responses to threats by using targeted gene flow. This strategy moves individuals with beneficial traits to enhance species resilience against environmental changes and other challenges.

Keywords:
adaptaciónadaptationassisted gene flowassisted gene transferevolución rápidaflujo génico asistidomanejo de poblacionespopulation managementrapid evolutionreubicacióntransferencia génica asistidatranslocation

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Area of Science:

  • Evolutionary biology
  • Conservation science
  • Ecology

Background:

  • Anthropogenic threats drive rapid evolution in natural populations.
  • Adaptive evolutionary responses are often overlooked in conservation management.
  • Geographic variation in traits can arise from long-standing factors or recent selection.

Purpose of the Study:

  • To highlight the potential of using evolutionary adaptive processes for conservation goals.
  • To advocate for the application of targeted gene flow as a conservation strategy.
  • To demonstrate the broad applicability of targeted gene flow in managing diverse ecological challenges.

Main Methods:

  • Reviewing the concept of adaptive evolutionary responses to anthropogenic threats.
  • Examining the role of geographic variation in species' traits.
  • Proposing targeted gene flow as a method to introduce beneficial traits into populations.

Main Results:

  • Rapid evolutionary responses to threats are common but underutilized in conservation.
  • Targeted gene flow, moving pre-adapted individuals, can enhance species resilience.
  • This approach can be applied across a species' range, leveraging existing or newly evolved variation.

Conclusions:

  • Targeted gene flow is an underappreciated conservation strategy with wide-ranging applications.
  • It can be used to increase natural resistance to threats, aiding species survival.
  • Applications include managing invasive species, pathogens, and climate change impacts.