Not only do
jumping spiders have eight eyes positioned to create nearly 360 - degree vision, but some species can detect ultraviolet radiation, which facilitates mating.
The East African
jumping spider Evarcha culicivora evolved to feed preferentially on female mosquitoes that have recently had a blood meal, which it can identify by both sight and odor.
Still, the photographer did come face to face with
the jumping spider (Aelurillus cristatopalpus), many a rugged species of ant — including the nutcracker (Pheidole capensis)-- and much lush and colourful plant life, including this Alice sundew (Drosera aliciae).
A weird echo of this meal - stealing strategy shows up in certain
jumping spiders.
This sneaky
jumping spider performs antics to fool predators in what is an unusual example of mimicry through behaviour, rather than appearance
Menda has since found evidence of hearing in five different spider species:
jumping spiders, fishing spiders, wolf spiders, netcasting spiders and house spiders.
Ants are the unlikely guardians of
jumping spiders in their battle against aggressive spitting spiders.
«Timid
jumping spider uses ant as bodyguard.»
Menda developed the technique for recording
the jumping spider's neural activity.
A study published online Oct. 13 in the journal Current Biology describes how researchers used metal microelectrodes in
a jumping spider's poppy - seed - sized brain to show that auditory neurons can sense far - field sounds, at distances up to 3 meters, or about 600 spider body lengths.
So it proves with Caspar Henderson's beautifully conjured world of barely imagined beings — ranging from the amazing
jumping spider to Venus's Girdle, an ancient comb jelly — out now in paperback.
The researchers found that
jumping spiders choose nesting sites based on whether they can see active living ants, if they detect ant odor or can see mounts made from dead weaver ants.
While
jumping spiders are known to have great vision, a new Cornell University study proves for the first time that spiders can hear at a distance.
Therefore
jumping spiders build dense ant - proof nests of an unusually tough and dense weave that are difficult for the insects to tear open.
It turned out 90 Hz is near the same frequency as wing beats of parasitic wasps,
the jumping spider's biggest enemies, which provision their nests with jumping spiders for their young to feed on.
The downside to this plan is that
jumping spiders are also a favorite snack of its very own saviors.
Also notable are two pairs of spots flanked by lines of metallic scales that Warren thinks mimic the eyes and legs of
jumping spiders.
However, the researchers found that a spitting spider does not come near
a jumping spider when the latter positions its own nest near that of weaver ants.
In the Philippines, it lives on the same large waxy leaves as
the jumping spider.
Nelson and Jackson therefore carried out experimental work at the International Rice Research Institute in the Philippines to look at the dynamics between a type of
jumping spider (Phintella piatensis), the territorial weaver ant (Oecophylla smaragdina) and a web - building predatory spitting spider (Scytodes sp).
However, it's not yet plain sailing for
the jumping spider, as it is also a favorite snack of its savior, the weaver ant.
This showed that the camouflage helps them repel more
jumping spiders and attract more flies than the controls without the camouflage.
The male
jumping spiders have specialized scales that glow white and green when exposed to UV light; in female spiders, the palps (front appendages) appeared green under UV light.
Prior research revealed how
jumping spiders achieve better acuity out of a small visual system by moving the sensor around behind their lens.
«Because we see these kinds of changes happening in
jumping spiders when fed poor diets we might discover things that help us better understand macular degeneration and other human - centric problems,» says Morehouse and Buschbeck.
He points to the Mars Rover as an example of using optics that were inspired by
jumping spider vision.
It's
a jumping spider that impersonates ants.
So how do
jumping spiders decide which other males they're willing to fight?
To find out, researchers designed their own computer - animated
jumping spiders and had them confront live specimens in a lab (see video here).
He and his colleagues knew that
jumping spiders see ultraviolet (UV) wavelengths in sunlight, which people can't.
You'd probably never notice
a jumping spider across your living room, but it would surely notice you.
The arachnids are known for their brilliant eyesight, and a new study shows they have even greater sensory prowess than we thought:
Jumping spiders can hear sounds even though they don't have ears — or even eardrums.
In a later study comparing almost 3400 active genes in 70 spider species, Bond's team found that mostly webless, ground - dwelling arachnids such as wolf spiders and
jumping spiders diversified much more quickly than web weavers, perhaps because they were able to exploit a plethora of new opportunities once they no longer had to build and tend webs.
And instead of fluttering like other moths, the metalmark makes jerky leaps like
the jumping spiders it mimics.
Long Yu of Hubei University in China and his team exposed the spider to one of its predators —
jumping spiders.
To find out which among these strategies — the wing pattern, jerky flight or peacock posture — is most critical for the mimicry to work, Shen - Horn Yen at the National Sun Yat - sen University in Taiwan first presented a Brenthia coronigera to
jumping spiders in the lab.
Peacock spiders and other
jumping spiders use internal hydraulic pumps rather than leg muscles to leap 30 times their body length.
The third group, the Araneomorphae, includes 5500
jumping spiders, 4500 dwarf spiders, 2400 wolf spiders, and thousands of web spinners.
Jumping spiders are known for their excellent vision and the elaborate body language they display when encountering other members of their species.
However,
jumping spiders seem not to pay attention to the size of their opponents in real fights.
However, in live fights,
jumping spiders may have limited opportunity to show this skill.
McGinley and Taylor turned to the Australian species Servaea incana to further test whether and how the behaviour of individual
jumping spiders differs in response to their opponent's size.
© Rowan McGinleyMcGinley and Taylor utilised video playback techniques, which have previously been used with
jumping spiders to study aspects of courtship and predation.
Biomechanics expert Andrew Martin and colleagues at the Institute for Technical Zoology and Bionics in Bremen, Germany, used a scanning electron microscope to look at the feet of a small
jumping spider (Evarcha arcuata).
A newly discovered species of
jumping spider has evolved bizarre paddle - shaped limbs to gauge females» interest in mating
Male
jumping spiders accompany their mating dance with a drum routine, sending vibrations through the ground to tempt a female.
To estimate pouncing distance,
jumping spiders compare crisp images of their prey to blurry ones
If you're a male
jumping spider, you might first make sure she wants to play.
Because the ants don't benefit from the close proximity of
jumping spiders, it seems like the jumping spider gets its protection with no strings attached.
The team believes
the jumping spider's tightly woven nest, complete with protective door flaps, guards the spider from ant assaults while the spitting spider's loosely constructed nest leaves it open for attack.