Search results
People also ask
What is a Darwin's bark spider?
How tough is Darwin's bark spider silk?
How does Darwin's bark spider spin a web?
How do Darwin's bark spiders make silk?
The average toughness of the fibres is 350 MJ/m 3, and some are up to 520 MJ/m 3, making the silk twice as tough as any other spider silk known. The web of Darwin's bark spider is remarkable in that it is not only the longest spanning web ever observed, but is the largest orb web ever seen, at an area of up to 2.8 square metres (30 sq ft).
Sep 24, 2010 · The web of the Darwin's bark spider (Caerostris darwini), can span some square feet (2.8 square meters) and is attached to each riverbank by anchor threads as long as 82 feet (25 meters).
Dec 4, 2023 · Darwin’s bark spider’s web is the largest, strongest, and most complex worldwide. The web’s bridge line could extend up to 82 ft, and the spider can cross a river depending on its web. The silk that it produces is the strongest among all spider species.
- Mayflies and other aquatic insects
- Near waterbodies
- Madagascar
- Orb web
Jul 25, 2019 · Darwin’s bark spider ( Caerostris darwini) produces giant orb webs from dragline silk that can be twice as tough as other silks, making it the toughest biological material. This extreme...
- Jessica E Garb, Robert A Haney, Evelyn E Schwager, Matjaž Gregorič, Matjaž Kuntner, Ingi Agnarsson, ...
- 2019
Jul 26, 2019 · Darwin's bark spiders make the largest-recorded orb web, supended on up to 25 metre-long threads. (Supplied: Matjaz Gregoric) Toughness doesn't only refer to the strength of the material, but also how much it can be stretched before it breaks. Darwin's bark spider uses dragline silk to make the spokes and frame of its web.
- Suzannah Lyons
3 days ago · The spider fiber’s remarkable strength is due to its unique extensibility, allowing it to stretch significantly more than other silks before breaking— thus enabling it to trap from tiny insects to small birds. These features earned its position in Guinness World Records as the strongest spider web.
The Darwin’s bark spider, Caerostris darwini Kuntner & Agnarsson (Araneidae), produces the toughest known spider silk (primary source GWR, 2017, see also “Largest web”). Tensile testing has shown that certain threads may reach the toughness of 520 MJ/m^3 (average = 350 MJ/m^3).
