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Drivers of Microbiome Composition Among Helminth Parasites Sharing the Same Insectivorous Bat Host.

Nallely G Ruiz-Torres1,2, Shamayim Martínez-Sánchez1,2, Arit de León-Lorenzana3,4

  • 1Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, México D.F, Mexico.

Molecular Ecology
|May 20, 2026
PubMed
Summary

Helminth parasites host distinct microbial communities, influenced by their specific microhabitat within the bat. These helminth microbiomes may play a role in parasite evolution and transmission.

Keywords:
16S rRNANematodaTrematodabathelminthsmicrobiome

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Published on: October 4, 2024

Area of Science:

  • Parasitology
  • Microbiome Research
  • Ecology

Background:

  • Parasitic helminths form complex associations with microbes, conceptualized as holobionts under joint selection.
  • Understanding helminth microbiomes is crucial for studying parasite evolution, especially in wildlife.
  • Factors shaping helminth microbiome composition remain largely unexplored.

Purpose of the Study:

  • To characterize the microbiome composition of various helminth species.
  • To investigate the influence of microhabitat and host phylogeny on helminth microbiomes.
  • To identify potential symbiotic microbes within helminth communities.

Main Methods:

  • 16S rRNA metabarcoding was used to analyze microbial communities.
  • Samples included helminths from four trematode and one nematode species.
  • Microhabitats analyzed were within the insectivorous bat Peropteryx kappleri, including host tissues and fluids.

Main Results:

  • Each helminth species displayed a unique microbial signature, partly influenced by its microhabitat.
  • No phylogenetic signal was observed in the microbiome composition among trematode species.
  • Helminths harbored microbial taxa enriched compared to the host, with potential symbiotic roles and links to arthropod intermediate hosts.

Conclusions:

  • Helminth microbiome composition is shaped by ecological factors, particularly microhabitat.
  • Distinct microbial signatures suggest specific roles for symbionts in helminth biology.
  • Findings provide a foundation for future research on helminth holobionts, impacting parasite establishment, development, and transmission.