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Arctic Insects Show a Highly Dynamic Microbiome Shaped by Abiotic and Biotic Variables.

Sara Nørris Christoffersen1, Stine Karstenskov Østergaard2, Nadieh de Jonge2

  • 1Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, 9220, Aalborg, Aalborg East, Denmark. saranc@bio.aau.dk.

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Summary
This summary is machine-generated.

The gut microbiome of Arctic insects like the Greenlandic seed bug and damsel bug is dynamic. Environmental factors and diet significantly shape their bacterial communities, aiding survival in extreme Arctic conditions.

Keywords:
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Area of Science:

  • Microbiology
  • Ecology
  • Entomology

Background:

  • Arctic ectotherms face extreme conditions with limited food resources.
  • The host-associated microbiome is crucial for adaptation but poorly understood in Arctic ectotherms.

Purpose of the Study:

  • Investigate bacterial community dynamics in Arctic insects.
  • Determine the influence of abiotic and biotic factors on insect microbiomes.

Main Methods:

  • Studied Greenlandic seed bugs (Nysius groenlandicus) and damsel bugs (Nabis flavomarginatus).
  • Analyzed bacterial communities under field and laboratory conditions.
  • Assessed effects of time, acclimation temperature, humidity, and diet.

Main Results:

  • Significant differences in bacterial composition and diversity between species.
  • Seasonal variations in bacterial communities linked to climate changes (temperature, humidity).
  • Diet altered bacterial composition; prey-to-predator transfer observed.

Conclusions:

  • Arctic insect microbiomes are highly dynamic.
  • Abiotic and biotic factors modulate insect gut bacteria.
  • Microbiome plays a vital role in Arctic insect adaptation and survival.