British swallowtail split from European cousins much earlier than thought, study finds
The News
A new study reveals that the British swallowtail butterfly (Papilio machaon britannicus) has been a distinct subspecies for at least 200,000 years, far longer than the previously believed 8,000 years. The butterfly, smaller and darker than its European counterparts, is now only regularly found breeding in the Norfolk Broads. This discovery may have significant implications for conservation strategies aimed at protecting the endangered species.
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The Analysis
Intelligence Brief
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Study finds British swallowtail is distinct subspecies for at least 200,000 years
The British swallowtail is smaller, darker, and much rarer than the continental swallowtail.
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Key findings
This finding could transform the conservation approach for the butterfly.
Prediction- Study finds British swallowtail is distinct subspecies for at least 200,000 years
- Previously believed to have diverged only 8,000 years ago after Doggerland flooding
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Plain English
Loaded language removed<p>Finding that Norfolk butterfly has been distinct subspecies for 200,000 years could transform conservation approach</p><p>The endangered swallowtail butterfly <em>Papilio machaon britannicus</em>, which is only regularly found breeding in Britain on the Norfolk Broads, has been a distinct subspecies for at least 200,000 years, according to a study.</p><p>Smaller, darker in colour and much…
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Claims
This finding could transform the conservation approach for the butterfly.
PredictionThe British swallowtail is smaller, darker, and much rarer than the continental swallowtail.
The Guardian