Voltinism \VOL-ten-izm\ n. The number of generations a species can produce in a year. Some insects can easily become grandparents or great-grandparents in that time, and rising global temperatures may give some species a longer reproductive season to spawn even more generations, Canadian researchers report in an upcoming Global Change Biology. The team used climate simulations to predict the effects of warmer temperatures on the voltinism of 13 agricultural pests in California, including the apple-eating codling moth (caterpillar stage shown). By the end of the century, the researchers say, 12 of those species could be pumping out one additional buggy generation per year in southern California.
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|Title Annotation:||species reproduction terminology; SCIENCE NOTEBOOK|
|Article Type:||Brief article|
|Date:||Jun 30, 2012|
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