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Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
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Genomic Data Characterize Reproductive Ecology Patterns in Michigan Invasive Red Swamp Crayfish (Procambarus

Nicole E Adams1, Jared J Homola2, Nicholas M Sard3

  • 1Department of Fisheries and Wildlife Michigan State University East Lansing Michigan USA.

Evolutionary Applications
|September 17, 2024
PubMed
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Invasive red swamp crayfish exhibit polyandry, complicating eradication efforts. Genomic tools help monitor invasive species

Keywords:
Procambarus clarkiieffective breeding numberinvasive specieskinship‐based approachesmating behaviorpedigree analysisreproductive ecology

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Area of Science:

  • Ecology and Evolutionary Biology
  • Invasive Species Management
  • Genomics and Population Genetics

Background:

  • Invasive species establishment and spread are linked to intersexual interactions, influencing dispersal and reproductive success.
  • R-selected species, like the red swamp crayfish (Procambarus clarkii), are difficult to eradicate due to rapid population growth.
  • Procambarus clarkii is a globally invasive species causing significant ecological and economic damage.

Purpose of the Study:

  • To develop a single nucleotide polymorphism (SNP) loci panel for Procambarus clarkii.
  • To characterize the mating system and breeding phenology of invasive P. clarkii populations.
  • To assess the utility of genomic tools for monitoring invasive species control efforts.

Main Methods:

  • Developed a SNP panel using restriction-associated DNA sequencing data.
  • Genotyped 1800 Procambarus clarkii individuals across 930 SNPs in southeastern Michigan.
  • Reconstructed pedigrees to analyze mating systems, reproductive success, and breeding phenology.

Main Results:

  • Successfully genotyped a large sample of P. clarkii, enabling detailed population analysis.
  • Identified a high prevalence of multiple paternity, indicating polyandry in surveyed populations.
  • Elucidated the breeding phenology of multiple introduced populations through genotype-based pedigrees and phenotypic data.

Conclusions:

  • Polyandry in Procambarus clarkii may influence population dynamics and complicate control strategies.
  • Newly developed rapid genomic assessment tools are effective for monitoring invasive species' reproductive responses and population parameters.
  • Genomic approaches provide valuable insights for managing invasive species like P. clarkii.