Colonising spiders evolve the same three forms. Every time

About 2 to 3 million years ago, a group of spiders let out long silk threads into the wind and set sail, so to speak, across the Pacific Ocean to Hawaii. These spiders were parasites of other spiders, invading their webs, snipping threads to steal insects that had been caught. But there weren't many webs to rob on Hawaii when they arrived. So they expanded their repertoire, looking for other ways to survive by trapping and eating other spiders. A new species evolved from those first spiders, after finding a way to live on rocks. And then another species evolved to live under leaves. And then another. And then 11 more species.

Colonising spiders evolve the same three forms. Every time

Hawaiian species has limited tricks in its repertoire, and performs them repeatedly. Stephen Fleischfresser reports.

Sun 11 Mar 18 from Cosmos Magazine

Wherever They Go, These Spiders Always Evolve the Same Way

We often assume that evolution is entirely unpredictable. But, that's not always the case. Some evolutionary changes seem to be at least partly hardwired into a species' DNA. For an example, ...

Thu 8 Mar 18 from Discover Magazine

How brightly colored spiders evolved on Hawaii again and again... and again

About 2 to 3 million years ago, a group of spiders let out long silk threads into the wind and set sail, so to speak, across the Pacific Ocean to Hawaii. These spiders were parasites of other ...

Thu 8 Mar 18 from Phys.org

Brightly colored spiders evolved many times on Hawaii

Always the same colors: white, brown, and gold.

Thu 8 Mar 18 from ZME Science

How Brightly Colored Spiders Evolved on Hawaii Again and Again

NewsAbout 2 to 3 million years ago, a group of spiders from parts unknown let out long silk threads into the wind and set sail, so to speak, across the Pacific Ocean to Hawaii. Contributed Author: UC ...

Fri 9 Mar 18 from Laboratory Equipment

How brightly colored spiders evolved on Hawaii again and again and again

About 2 to 3 million years ago, a group of spiders from parts unknown let out long silk threads into the wind and set sail, so to speak, across the Pacific Ocean to Hawaii. These spiders were ...

Sat 10 Mar 18 from Science Blog

Hawaiian stick spiders re-evolve the same three guises every time they island hop

We don't usually expect evolution to be predictable. But Hawaiian stick spiders of the Ariamnes genus have repeatedly evolved the same distinctive forms, known as ecomorphs, on different islands, ...

Thu 8 Mar 18 from ScienceDaily

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