#globalite Sastha finds out how spiders spin webs. Watch the video at the end – very cool! #scifriday
I have always wondered how the spiders create a web. Yesterday, I came across a Giant Wood Spider or Golden Silk Orb-weaver in the far corner of our yard (the featured picture). Did a small research on the “interwebs” and found all these details.
Spiders use silk to capture their food in a variety of ways ranging from the simple trip wires used by the large bird-eating spiders to the complicated and beautiful webs spun by the orb spiders.
It does not take a long time for the spider to create a web. Most spiders do their web-building at night, so you don’t often see one in action. An orb-weaver takes between 30 to 60 minutes to create an intricate web. Spiders only abandon webs when they face serious threats.
The orb-spinners’ web can measure up to 18 feet and 9 inches. They do their repair in the nights and replace every few days. They are also known to eat the web and recycle it again.
Now, how a spider builds a web:
Step 1: The spider releases a length of thread into the wind.
Step 2: If the spider feels that the thread has caught onto something, it clinches up the silk and attaches it to its starting point.
Step 3: The spider walks across the bridge thread, releasing a looser thread below it.
Step 4: The spider climbs to the center of the loose thread and lowers itself down on a vertical thread to form a Y-shape.
Step 5: The spider lays more frame threads between various anchor points as it walks along the structural threads.
Step 6: The spider lays out radius threads from the center of the web to the frames.
Step 7: The spider lays more non-stick silk to form an auxillary spiral, extending from the center of the web to the outer edge of the web.
Step 8: The spider spirals inward, laying out sticky thread and using the auxillary spiral as a reference.
Step 9: The result is a web with non-sticky radius threads, for getting around, and a sticky spiral for catching bugs.
Watch it in action! Really cool how they “knit” the web!