JORO SPIDER - NEPHILA CLAVATA

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Uploaded by on Sep 11, 2009

Nephila clavata, also known as the Jorō Spider is a member of the golden orb-web spider group. The spider can be found throughout Japan except Hokkaidō, in Korea, Taiwan and China. Due to the large size as well as the bright, unique colors of the species of the female Nephila, the spider is well-favored in Japan.
Nephila clavata pass winter as eggs and scatter as tiny larvae in the spring. The female's body size is 17-25 mm, while the male's is 7-10 mm.
The web of female Nephila can reach one meter in width; the yellow threads appear rich gold in sunlight. The structure of the web seen in cross section is unusual for an orb web; it has 3 layers: the central orb, plus 2 irregular layers in front and behind the orb.
The adult female individual has stripes of yellow and dark blue, with red towards the rear of the abdomen. In autumn, smaller male(s) may be seen in the female's web for copulating. After mating the female spins an egg sack on a tree, laying 400 - 1500 eggs in one sack. The life cycle ends by late autumn or early winter.
Researchers at Shinshu University, Japan have succeeded in creating a silk thread that is stronger, softer and more durable than conventional silk by genetically modifying silkworms with Nephilia drag line genes. A Japanese manufacturer is already experimenting with the thread, and spider socks[1], stockings and even fishing lines are expected to appear on the market within a few years.

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Uploader Comments (VascoPolonia)

  • are these poisonous?

  • @bbender1986

    They've some venom, but are harmless to humans. And these spiders are very gentle and clumsy outside of their webs.

  • Excellent footage . . . good camera work . . . however, I'd have chosen a more pastoral piece of music.

  • @stevenrmc Thank you.

  • did u shoot these shots yourself here because therer nice and is that your house or are u visting there for some reason

  • Yes, that's near my old house, in Seoul. The whole bunch of these beautiful spiders have lived on this tiny, local square year in year out. The locals must have gotten used to them, as even though the Joros are very big and sometimes hang over people's heads no one hurts them. They are harmless.

    Thanks for watching.

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  • for some reason the first thing i though was " what if I run around in the yard and get that web inmy face" that one big web xD anywys... she's pretty ^^

  • Thank you.

  • wow you got awesome shots in there.

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