Check out our new paper, "Isotope geolocation and population genomics in Vanessa cardui: Short- and long-distance migrants are genetically undifferentiated," out in PNAS Nexus! doi.org/10.1093/pnas... - ThreadSky

megansreich.bsky.social • 29 days ago

Check out our new paper, "Isotope geolocation and population genomics
in Vanessa cardui: Short- and long-distance migrants
are genetically undifferentiated," out in PNAS Nexus!

https://doi.org/10.1093/pnasnexus/pgae586

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megansreich.bsky.social•29 days ago

Every year, painted lady butterflies migrate between Europe and sub-Saharan Africa over a migratory cycle composed of 8 – 10 generations of butterflies. However, isotopes, pollen, monitoring data, and ecological niche modelling were all pointing to an interesting observation…

megansreich.bsky.social•29 days ago

During the autumnal migration, some painted ladies migrate to the Mediterranean region, while others migrate across the Sahara to sub-Saharan Africa. Our question was, why do some painted ladies dare to cross the Sahara while others do not? Is the difference in behaviour genetically determined?

megansreich.bsky.social•29 days ago

First, Farid Bahleman and Khadim Kébé collected painted ladies south of the Sahara in the autumn. At the same time, Gerard Talavera and I collected painted ladies from the circum-Mediterranean region

megansreich.bsky.social•29 days ago

By applying hydrogen and strontium isotope geolocation, Clement Bataille and I confirmed distinct differences in migration distance – butterflies flew either long distances to sub-Saharan Africa – one over 4,000 km! - or short distances to the Mediterranean

megansreich.bsky.social•29 days ago

6. Read more about the trans-Saharan migratory patterns of the painted lady in our related study published in iScience last month https://www.cell.com/iscience/fulltext/S2589-0042%2824%2902567-7

megansreich.bsky.social•29 days ago

We performed whole-genome resequencing on our painted ladies. My co-lead author, Daria Shipilina, led the genomic analysis, with input from Venkat Talla, Niclas Backström, Gerard Talavera, and me. We found no genetic differentiation or population structure associated with migration distance

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