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Study Reveals Unique Genome Insights of Dysdera Tilosensis

1/12/2026

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Summary

Story summary

A study led by the University of Barcelona finds Dysdera tilosensis has a genome of 1.7 billion base pairs, half the size of its mainland relative Dysdera catalonica.
The smaller genome coincides with greater genetic diversity, and researchers say selection may streamline by removing non-functional DNA rather than adding DNA.
This suggests the founder effect may not apply, as Dysdera tilosensis likely remained stable after colonizing Gran Canaria.

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Story summary

A study led by the University of Barcelona finds Dysdera tilosensis has a genome of 1.7 billion base pairs, half the size of its mainland relative Dysdera catalonica.
The smaller genome coincides with greater genetic diversity, and researchers say selection may streamline by removing non-functional DNA rather than adding DNA.
This suggests the founder effect may not apply, as Dysdera tilosensis likely remained stable after colonizing Gran Canaria.