Finally, scientists know where painted lady butterflies go in Africa to wait out the winter cold.
, but where on the continent they waited out European winters from December to February was a mystery . The butterflies cross the Sahara and arrive in countries such as Chad in the fall. Around November the insects fly elsewhere, Talavera says, but it was unknown where they landed.regions close to the equator
From late 2017 through early 2020, Talavera and an international team of researchers conducted fieldwork at a wide variety of sites across sub-Saharan Africa during the months of December and January. Another 15 sites were monitored year-round for about two years. In total, the team looked for adults and their young in nine countries, including Benin, Cameroon, and Kenya.
From September to November, the butterflies occupy semiarid savannas. As those areas dry up, the painted ladies shift south to savannas and highlands in slightly humid regions from December to February. Central Africa’s tropical rainforests stop the butterflies from going any farther south, Talavera says. “These butterflies don’t like wet areas.”
France Dernières Nouvelles, France Actualités
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