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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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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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When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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Updated: Sep 18, 2025

Early Metamorphic Insertion Technology for Insect Flight Behavior Monitoring
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Active navigation and meteorological selectivity drive insect migration patterns through the Levant.

Yuval Werber1, Elior Adin2, Jason W Chapman3,4

  • 1Department of Evolutionary and Environmental Biology, University of Haifa, Haifa 3103301, Israel.

Proceedings. Biological Sciences
|June 24, 2025
PubMed
Summary
This summary is machine-generated.

An 8-year radar study reveals the Levantine Corridor is a major insect migration route, with over 700 million insects crossing annually. Insect migration patterns are influenced by weather and show distinct directional movements.

Keywords:
IsraelLevantine Corridoreastern Mediterraneanflight behaviourinsect migrationmeteorological effectsradar monitoring

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Area of Science:

  • Ecological science
  • Zoology
  • Environmental science

Background:

  • Insect migration is vital for ecosystems but poorly understood at large scales.
  • The Levantine Corridor, a 70 km-wide habitat strip, connects continents between the Mediterranean Sea and Arabian Desert.

Purpose of the Study:

  • To investigate large-scale insect migration patterns using the Levantine Corridor.
  • To quantify insect flux and identify factors influencing migratory behavior.

Main Methods:

  • Deployment of 7 biological radars over 8 years.
  • Recording and analysis of over 6.3 million individual large insects (>10 mg).
  • Comparison with European insect migration data.

Main Results:

  • Estimated annual crossing of over 700 million large insects through the Levantine Corridor.
  • Insect migration directionality differed from prevailing winds, with distinct spring and autumn movements.
  • Migration intensity correlated with weather, favoring tailwinds and warmer temperatures.

Conclusions:

  • The Levantine Corridor is a significant, previously underestimated insect migration route.
  • Levantine insect fluxes are lower than at higher latitudes, challenging the 'funnel' hypothesis.
  • Understanding this route is crucial for predicting impacts on food webs, disease, and invasive species across continents.