Molecular delimitation of evolutionary significant units reveals hidden geographic drivers of extinction risk within island arthropods

Aim: Globally, arthropod biodiversity is under threat, with increased risk of species-level extinctions, and this threat is particularly acute on oceanic islands. A fundamental first step toward understanding extinction risk is to understand genetic connectivity among the constituent populations of a species. Our aim is to develop and implement a protocol to characterise genetic connectivity among island populations within arthropod species to reveal otherwise hidden range size drivers of extinction.
Location: Canary Islands, Spain.
Methods: We implement a protocol based on mtDNA sequence data for the delimitation of evolutionary significant units (ESUs) to evaluate extinction risk among species of beetle and spider distributed across multiple islands.
Results: Our results reveal that more than half of the species analysed are comprised of two or more ESUs. We also find that low dispersal ability was a significant predictor of ESUs within species of Coleoptera, but with no significant d..., Date of data collection: 2012-2021
Geographic location of data collection: Canary Islands, Spain. Specifically, laurel forests of Tenerife, La Gomera, La Palma and El Hierro.
This data set was generated to calculate the Nst index usign SPAGeDI software to delimited potential ESUs (Evolutionary Significant Units) of spider and beetle species through a specific workflow; and to calculate GLM and the Spearman Rank-Order Correlation.Genetic data include cytochrome oxidase I (COI) sequences of spiders and beetles obtained with Sanger sequencing., , # Molecular delimitation of evolutionary significant units reveals hidden geographic drivers of extinction risk within island arthropods

[https://doi.org/10.5061/dryad.cjsxksngn](https://doi.org/10.5061/dryad.cjsxksngn)

## Description of the data and file structure

This README.txt file was generated on 28-11-2024 by Eduardo Jiménez-García

GENERAL INFORMATION

Title of Dataset: Data from: Molecular delimitation of evolutionary significant units reveals hidden geographic drivers of extinction risk within island arthropods

Author Information

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Corresponding Investigator 1

Name: Dr Brent Charles Emerson

Institution: IPNA-CSIC, San Cristóbal de La Laguna, Canary Islands, Spain

Email: [e-mail]

Corresponding Investigator 2

Name: Eduardo Jiménez-García

Institution: IPNA-CSIC, San Cristóbal de La Laguna, Canary Islands, Spain

Email: [e-mail]

Co-investigador 1

Name: Daniel Suárez Ramos

Institution: IPNA-CSIC, San Cristóbal de La Laguna, ...