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    Home»Science»Orb Spiders Have Toxic Burglar Alarms To Protect Against Web Invasion
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    Orb Spiders Have Toxic Burglar Alarms To Protect Against Web Invasion

    By SciTechDailyNovember 23, 20112 Comments2 Mins Read
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    Batik Golden Web Spider (Nephila antipodiana)
    Nephila antipodiana, also known as the batik golden web spider, is a species of golden orb-web spider.

    Humans have all kinds of security to protect our homes, whether it is an advanced home security system, a barking dog, or just a motion-activated light, so it makes sense that spiders would have their burglar alarms, alerting them to intruders attacking their web.

    I’m talking specifically about some Orb Spiders that take extra security measures. As it turns out, they use a chemical in their web silk that does a good job of repelling ants. A recent study at the National University of Singapore sheds some light on the whole spider/ant war. Since ants are often found in the webs of some spiders, why were they rarely seen in the webs of orb-web spiders?

    To answer that question researchers had to determine what repelled the ants, so they collected wild orb-web spiders and did chemical tests on their silk. One chemical called 2-pyrrolidinone proved to repel ants in the lab, even when a delicious snack was offered as an enticement.

    Interestingly, young spiders have no need for this chemical weapon as their silk is too thin for the smallest of ants to navigate; but when they get older and have the need, they are capable of defending their web.

    Ants Defense Nature Spiders
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    2 Comments

    1. Isak Gold, Cape Coral FL on February 7, 2018 8:10 pm

      Thank’s for the information, i am a photographer and love to thak photos of spider, not had luck at night photos.

      Reply
    2. Isak Gold, Cape Coral FL on February 7, 2018 8:13 pm

      Thank’s for the information about Orb Spiders, i am a photographer and love to teak photos of spiders, not had luck at night photos.

      Reply
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