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June 19, 2026Memórias do Instituto Oswaldo CruzOpen Access

Coexistence of monogamy and polygyny in Triatoma infestans: fine-scale genealogical structure reveals complex social structures within domestic colonies in the Bolivian Chaco

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Authors

ACAlex CornejoRSRolando SánchezFLFrédéric Lardeux

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Overview

Randomized trial analyzes mating systems and genetic structure in Triatoma infestans, revealing complex social dynamics.

Key Points

  • The aim is to investigate the genetic structure and mating systems of Triatoma infestans in a Bolivian rural community.
  • Genotyped 381 individuals from three structures using eight microsatellite loci.
  • Reconstructed genealogical relationships with maximum likelihood analysis (COLONY).
  • Inferred demographic history through heterozygosity tests.
  • Identified 42 distinct full-sibling families within one colony.
  • Two dominant families showed monogamy, while 40 minor families exhibited high promiscuity.
  • Finite growth rates were significantly different (λ = 1.03 vs 1.22), indicating competition within the colony.

Cite This Study

Cornejo et al. (2026) studied this question.

synapsesocial.com/papers/6a34dbc465a5b0777af2c536https://doi.org/10.1590/0074-02760250355
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