Go Back   DreamTeamDownloads1, FTP Help, Movies, Bollywood, Applications, etc. & Mature Sex Forum, Rapidshare, Filefactory, Freakshare, Rapidgator, Turbobit, & More MULTI Filehosts > World News/Sport/Weather > Earths' Enigmas/Astronomy/UFOs/Science/Health/Animals

Earths' Enigmas/Astronomy/UFOs/Science/Health/Animals Read & Enjoy Many Interesting Articles in Here About our World -From the Past, Present & Future- Astronomy, Science and Technology, Archaeology, UFOs & Animals ..

IMPORTANT ANNOUNCEMENT
Hallo to All Members. As you can see we regularly Upgrade our Servers, (Sorry for any Downtime during this). We also have added more Forums to help you with many things and for you to enjoy. We now need you to help us to keep this site up and running. This site works at a loss every month and we appeal to you to donate what you can. If you would like to help us, then please just send a message to any Member of Staff for info on how to do this,,,, & Thank You for Being Members of this site.
Post New ThreadReply
 
LinkBack Thread Tools Display Modes
Old 01-08-12, 22:27   #1
GLOBAL REPORTER
 
BlueRose's Avatar
 
Join Date: Jun 2012
Posts: 79
Thanks: 34
Thanked 94 Times in 49 Posts
BlueRose will become famous soon enoughBlueRose will become famous soon enough
Default Net-casting spider hunt filmed in wild

Net-casting spider hunt filmed in wild.
By Matt Bardo Reporter, BBC Nature


The net-casting spider's deadly strike is completed in a split-second.

High-speed footage of a net-casting spider's hunting technique has been recorded by a film crew.

As ambush hunters, the spiders are known to use a combination of touch and well-developed sight to sense prey.

The video reveals the rarely-seen, split-second technique of the species as it snatches an unsuspecting cricket in a Central American forest.

The team believe this is the first slow-motion footage to show a net-casting spider hunting in the wild.

Expert, Dr George McGavin, who witnessed the event said: "I would compare it to watching a big cat kill. It's as exciting as that."

The film crew were in central America filming wildlife for a new nature series, The Dark: Nature's Nighttime World.
Continue reading the main story



They waited for five hours with the cameras trained on the spider until the cricket strayed into the killing zone beneath the net.

"The spider did not move a muscle until the antenna of that prey item, the cricket, touched the thread.

"As soon as it touched it, [the spider] was on it in a thousandth of a second," said Dr McGavin, "if we hadn't had that camera, you wouldn't have seen a thing."

"It was the most exciting thing I've ever seen," he said.

Net-casting spiders are found across the world in tropical and sub-tropical regions and are also known as ogre-faced spiders because of their distinctive big eyes, which help them to see prey during nighttime hunts.

But on this occasion, the team also captured the important moment that triggers the spider's trap.

When the cricket touched one of the net's anchoring threads with its antenna, it caused the spider to strike.

"It's like a trip wire," said Craig Walker, deputy team leader for invertebrates at the Zoological Society of London. "It'll send a vibration to the spider."

The spiders construct their webs in stages, first building a scaffold at a spot under which its prey is likely to pass.

"It's almost like manufacturing your own workbench so that you can make something on it," Mr Walker told BBC Nature.


Net-casting spider.

The spider then carefully crafts its distinctive net using a different type of silk.

"They spin some of the silk at its most extended so its already at full stretch when its spun so that when its off the scaffold it'll immediately shrink to its non-stretched size," he said.

"They hit the prey with it at full stretch and then they relax it so that it gets caught into it, almost like a purse net."

Sometimes spiders of this genus use an extra technique to help them to pick out their prey at night.

"(They) will spend a little while spraying faeces on to the ground which dry white and then the dark animal has to run across it and it's a bit like putting a flash light on something," said Mr Walker.

-----------------

I found a video of a Net-casting Soider on youtube. Ladybbird told me how to insert them here on the site but it didn't want to go. So, here's the link. I'll practice around a little more with posting youtubes...lol

http://www.youtube.com/watch?v=_peM31m5HFA&feature=player_embedded#!
BlueRose is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 01-08-12, 22:34   #2
pop
Official Site Mascot/Moderator
 
pop's Avatar
 
Join Date: Jun 2011
Posts: 1,178
Thanks: 2,019
Thanked 1,001 Times in 636 Posts
pop has much to be proud ofpop has much to be proud ofpop has much to be proud ofpop has much to be proud ofpop has much to be proud ofpop has much to be proud ofpop has much to be proud ofpop has much to be proud of

Awards Showcase
Bronze Medal 
Total Awards: 1

Default Re: Net-casting spider hunt filmed in wild

The youtube didn't work for me eighter so don't feel stupid like Photostill "smiles"

I have watched spiders attack things when they just touch their net and OMG they are fast, so good to watch.
pop is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Old 01-08-12, 23:03   #3
GLOBAL REPORTER
 
BlueRose's Avatar
 
Join Date: Jun 2012
Posts: 79
Thanks: 34
Thanked 94 Times in 49 Posts
BlueRose will become famous soon enoughBlueRose will become famous soon enough
Default Re: Net-casting spider hunt filmed in wild



Thanks.
BlueRose is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
The Following User Says Thank You to BlueRose For This Useful Post:
pop (05-08-12)
Post New ThreadReply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
SEO by vBSEO 3.5.2
Designed by: vBSkinworks