Spider webs, may be a natural structure of the animal made the most beautiful and intricate. But some types of spiders make it even better. They built it one step further.
Several types of decorating spider web is even more organized in a more complex pattern, as if to show that they are the best natural designer on earth. If you look at the pictures below do not look perfect but enough to make us wonder why they made this extra configuration.
Structure of spider webs extra features or stabilimentum scientific name stabilimenta. This name was taken by accident, and even appeared because of an error that is when researchers speculate that this pattern intended to make a cobweb stable. This theory was later disproved.
It seems the function of this extra pattern can vary. The spider was building his own pattern many times perhaps to ten times. Some of them make this pattern does not come from his own net but from what remains of it, including from the former their own eggs or anything that is near the net.
This pattern of extra nets can be found among some species of spiders - but the best example is that of Argiope species. This extra patterns, often almost mathematical precision with 45-degree angle, it seems made for "explore" so their bodies do not make it more attractive predator. Sometimes this leads to a vertical pattern and spider younger may make it shaped like a disc.
Answering the question why these extra patterns made seems to be not simple. Some consider it provides extra protection because it makes the spider appear larger or as camouflage. Or instead make it more visible than the net itself that make it more easily seen by the example of birds. More like "stop sign" to other animals.
Later it is mentioned that more stabilimenta used to attract prey spider. Often seen insects gather at night near lights? Extra patterns spider webs are believed to be capable of reflecting ultraviolet rays so that more meanrik prey to approach the net.
Thermoregulation, this theory says that this extra pattern helps the spider maintain optimal body temperature to survive in any weather.
There is also a mention that the spider has aesthetic - like human beings also have aesthetic - as well as other animals shown to improve the surrounding environment to pursue something.
It might, reproductive urge is the reason why this extra pattern is made. When a female is ready to reproduce, let alone how better to attract the males than beautify the web?
This extra patterns are made mostly of his own net in addition to several types combine it with any object nearby. In Nephila species, the remains of prey, too attached to this pattern is more interesting purpose other prey again.
Whatever the reason, this show out there there are many natural wonders we realize that not happen every day. Even small animals do we almost never notice.
source : http://aneh-tapi-nyata.blogspot.com/2009/10/pola-jaring-laba-laba-yang-unik.html
