science unravels spiders monstrous food web
Last Updated : GMT 11:59:16
Egypt Today, egypt today
Egypt Today, egypt today
Last Updated : GMT 11:59:16
Egypt Today, egypt today

Science unravels spiders' monstrous food web

Egypt Today, egypt today

Egypt Today, egypt today Science unravels spiders' monstrous food web

There are some 45,000 known spider species
Paris - AFP

The world's spiders eat 400-800 million tonnes of insects every year -- equivalent to the amount of meat and fish that humans consume over the same period, a study said Tuesday.

In the first analysis of its kind, researchers used data from 65 previous studies to estimate that a total of 25 million metric tonnes of spiders exist on Earth.

Taking into account how much food spiders need to survive, the team then calculated the eight-legged creatures' annual haul of insects and other invertebrates.

"Our estimates... suggest that the annual prey kill of the global spider community is in the range of 400-800 million metric tons," they wrote in the journal The Science of Nature.

This showed just how big a role spiders play in keeping pests and disease-carriers at bay -- especially in forests and grasslands where most of them live.

For context, the study points out that humans consume about 400 million tonnes of meat and fish every year, while whales feed on 280-500 tonnes and seabirds about 70 million tonnes of seafood."We hope that these estimates and their significant magnitude raise public awareness and increase the level of appreciation for the important global role of spiders," the study authors wrote.

There are some 45,000 known spider species, all of them meat-eating.

And the critters can travel far to feed, swinging from place to place on silken threats that allow them to cover up to 30 kilometres (19 miles) in a day.

Spiders are found everywhere from the Arctic to the most arid of deserts, in caves, on ocean shores, sand dunes and flood plains, the study authors said.

Aside from being masterly hunters, spiders serve another important role -- as food.

More than 8,000 species of birds, other predators and parasites feed exclusively on spiders, said the researchers.

Source: AFP

egypttoday
egypttoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

science unravels spiders monstrous food web science unravels spiders monstrous food web



Egypt Today, egypt today Modern colorful bedroom renovation

GMT 12:15 2017 Thursday ,21 December

Modern colorful bedroom renovation
Egypt Today, egypt today Paris Fashion Week: John Galliano goes co-ed on the catwalk
Egypt Today, egypt today For the Variety of Interior Design Styles

GMT 22:35 2017 Tuesday ,19 December

For the Variety of Interior Design Styles

GMT 09:23 2019 Friday ,30 August

Testing

GMT 09:34 2019 Monday ,19 August

Live a positive and important atmosphere

GMT 13:11 2017 Wednesday ,04 October

Jacques Dubochet (Switzerland), Joachim Frank (US)

GMT 19:10 2012 Wednesday ,12 September

New Mint Line from Redken

GMT 20:34 2017 Monday ,16 January

Iran in Yemen: See no evil, hear no evil

GMT 16:50 2017 Wednesday ,29 November

Trump again backs alleged harasser

GMT 06:53 2014 Monday ,13 January

Perfect indoor outdoor experience

GMT 13:31 2011 Wednesday ,27 July

Zucchini Béchamel

GMT 15:29 2017 Wednesday ,26 July

UNDP program supports youth in Jordan

GMT 14:13 2012 Thursday ,01 March

Tips to make your skin glow

GMT 12:14 2017 Wednesday ,25 October

Millions in US get set for rare total solar eclipse

GMT 10:18 2016 Thursday ,07 April

City in driving seat after slapstick night in Paris

GMT 11:39 2015 Monday ,08 June

New Opel Astra fit for fun

GMT 04:09 2013 Saturday ,14 September

The ironies of postponing a military strike against Syria

GMT 19:13 2016 Monday ,07 March

Chinese drama 'Wu Zetian' staged in New York

GMT 10:52 2014 Saturday ,22 February

7 essential habits of happy entrepreneurs

GMT 14:29 2012 Monday ,02 January

Making their mark on a designer chair

GMT 01:12 2011 Wednesday ,05 October

City to hit outcast Tevez

GMT 14:52 2011 Tuesday ,13 December

Michael MacDowell: How to grow the regional economy
 
 Egypt Today Facebook,egypt today facebook  Egypt Today Twitter,egypt today twitter Egypt Today Rss,egypt today rss  Egypt Today Youtube,egypt today youtube  Egypt Today Youtube,egypt today youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

egypttoday egypttoday egypttoday egypttoday
egypttoday egypttoday egypttoday
egypttoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
egypttoday, Egypttoday, Egypttoday