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Female resistance, not just choice, drives mosquitofish diversity

Researchers found that female mosquitofish resistance, not just mating choice, drives behavioral isolation and speciation. Female aggression is a key factor in reducing fertilization success, leading to reproductive isolation between populations with different ecological environments.

SourceNorth Carolina State University·JournalBMC Ecology and Evolution·TypeObservational study·DateMar 11, 2026
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Genome sequencing of butterflies resolves centuries-old conundrum

A new study sequenced the genomes of glasswing butterflies, revealing six previously unrecognized species and shedding light on their rapid diversification. The research also showed that these butterflies use chemical communication to recognize each other, despite their similar appearances.

SourceFlorida Museum of Natural History·JournalProceedings of the National Academy of Sciences·DateJul 29, 2025