Wildlife Gardeners - North American Wildlife Gardening

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-   -   Orb-weaving Spiders - Evolutionary History (http://www.wildlifegardeners.org/forum/insects-arachnids-gastropods/9307-orb-weaving-spiders-evolutionary-history.html)

suunto 11-11-2011 09:19 AM

Orb-weaving Spiders - Evolutionary History
 
"Focus on Home, Not Meals, Led Spiders to Diversify"
http://www.nytimes.com/2011/11/08/sc...=1&ref=science

"In the past, scientists thought that orb weavers diversified when flying insects did — that the spiders needed to specialize to catch different insects. But the new research indicates that “there is no real direct relationship,” said the study’s first author, Dimitar Dimitrov, an evolutionary biologist at the University of Copenhagen. In fact, he said, flying insects diversified 100 million years after the orb weavers.
He believes that orb weavers diversified for another reason: to create specialized habitats. Some create webs ideal for tree branches, while others specialize in webs better suited for tree trunks and tall grasses."


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