As if global warming isn't giving us enough to worry about, now scientists say it could lead to bigger—and possibly more—spiders of at least one species. A group of Danish scientists wondered whether global warming would make the hairy, meat-eating wolf spiders of northeastern Greenland bigger, since longer summers mean more hunting time. The little-known species, Pardosa glacialis, grows as long as 1.6 inches (four centimeters), study co-author Toke Høye of Aarhus University estimates.The spiders can live for at least two years, and the researchers found that, in years when spring came early, the animals grew larger, on average.
For example, when spring came 30 days earlier than usual, some spiders grew exoskeletons that were 10 percent thicker than average, resulting in bigger bodies overall.
Likewise, in colder years average exoskeleton thickness shrank.
Wednesday, May 6, 2009
Global warming making spiders bigger, scarier.
Coozer Philes will also notice that these are WOLF SPIDERS - the same ones than turn into zombies! From National Geographic:
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