Warming has already boosted insect breeding

Museum records, publications suggest extra generations at same time as temperature increases

By Susan Milius, 18:02 PM December 24, 2009

Summertime and the insect breeding is easy.

That old song rings especially true for 44 species of moths and butterflies in Central Europe, according to an analysis by ecologist Florian Altermatt of the University of California, Davis. As the region has warmed since the 1980s, some of these species have added an extra generation during the summer for the first time on record in that location.

Among the 263 species already known to have a second or third generation there during toasty times, 1...

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