•   
  •   
  •   

Technology Sea spiders use their guts to pump oxygen through their freaky little bodies

19:05  11 july  2017
19:05  11 july  2017 Source:   popsci.com

Carpenter found guilty of 1990s murders of 2 prostitutes

  Carpenter found guilty of 1990s murders of 2 prostitutes A suburban New York carpenter has been convicted of murder in the deaths of two prostitutes found slain in the 1990s.Prosecutors used DNA evidence found on both victims as the keystone of their case against John Bittrolff.A Suffolk County jury reached its unanimous verdict Wednesday after seven days. Bittrolff faces 50 years to life in prison when he's sentenced Sept. 12.The 51-year-old Manorville father was arrested in 2014 after homicide detectives linked evidence found on the women's remains to his DNA. His attorney said during the trial that evidence he had sex with the women was not proof of murder.

This species of sea spider ripples its digestive tract to deliver oxygen to the cells in its body . That helps to explain why, unlike true spiders , sea spiders ' guts extend out of the abdomen and into their legs—it probably helps to keep the nutrients moving.

Sea spiders use their guts : to pump oxygen through their tiny foreign bodies . Many of us think with our stomachs, but researchers on an Antarctic expedition

sea spider© Timothy R. Dwyer (PolarTREC 2016), Courtesy of ARCUS sea spider

Sea spiders—giant weirdos of the ocean—can grow up to three feet wide, with extra appendages to boot. Now scientists have discovered they also use their digestive tracts in a unique way.

man holding credit cards
An Incredible $200 Intro Bonus Just For Using This Card
Learn More
Sponsored by NextAdvisor

Many of us think with our stomachs, but researchers on an Antarctic expedition have discovered a creature that uses its gut for a heart. This species of sea spider ripples its digestive tract to deliver oxygen to the cells in its body.

Normal spiders and insects in general don’t have veins or blood like you and I. Instead, a substance called hemolymph just sort of washes over their cells to deliver oxygen and energy. A tube-shaped heart keeps all that fluid moving around. Sea spiders, those sometimes 10- to 12-legged weirdos who live in the Mediterranean and Caribbean seas, and can grow up to three feet wide in the polar oceans, of course do things differently.

Eight bodies pulled from collapsed apartment block near Naples

  Eight bodies pulled from collapsed apartment block near Naples Rescuers said Saturday that they had recovered the bodies of eight people missing after an apartment block collapsed near the Italian city of Naples. Firefighters and volunteers have been sifting through the rubble since early Friday after two floors of the four-storey block in the town of Torre Annunziata collapsed at around 6:30 am (0430 GMT).The last body was found early Saturday after teams searched through the night, often using their bare hands.

A new study found that sea spiders use their extensive gut to pump oxygen through their bodies . Most animals use their heart to circulate blood and oxygen .

Sea spiders , which have inhabited Earth for over 500 million years, are fascinating creatures. The marine arthropods, which range in size from a millimeter long to as big as a dinner plate, have eight jointed legs that convene around a tiny body .

While staring at sea spider blood and guts under a microscope (for some species, you can see right into their living bodies), biologist H. Arthur Woods of the University of Montana, Missoula, noticed that the arthropod's heart beats weakly. Whereas its heart only pumps hemolymph to the creature’s main body, its guts were working overtime.

Spider guts, and our own, use squeezing motions to help break up food and move it along the digestive tract. In sea spiders, those waves of peristalsis were particularly strong.

"My 'aha!' moment was to consider that maybe all that sloshing of blood and guts was not about digestion but instead about moving respiratory gases around," Woods said in a statement.

In a series of experiments and observations, he and his colleagues confirmed that hypothesis in 12 species of sea spider, showing that their guts essentially function as cardiovascular systems. That helps to explain why, unlike true spiders, sea spiders' guts extend out of the abdomen and into their legs—it probably helps to keep the nutrients moving. The work is published today in Current Biology.

AL's All-Star win over NL leaves all-time records eerily even

  AL's All-Star win over NL leaves all-time records eerily even The 2018 All-Star Game at Nationals Park may just be for all the marbles. Thanks to Robinson Cano's 10th-inning solo homer off of Wade Davis, the American League defeated the National League 2-1 on Tuesday at Miami Park to give the AL its fifth straight win over its older counterpart. More importantly than that, however, it also tied up the all-time record between the two associations at an even 43-43.The like numbers don't end there, though.Coming into Tuesday's Midsummer Classic, the AL had scored 359 runs in the history of the event, while the NL had plated 360.

11.07.2017. Many of us think with our stomachs, but researchers on an Antarctic expedition have discovered a creature that uses its gut for a heart.

Sea spiders : the giant weirdos of the ocean. 😵. 31. Sly Stallone's 'Creed 2' Upper Body Workout Will Set Your Shoulders on Fire.

It's certainly a strange way of doing business, but not entirely unheard of in the animal kingdom. Dragonflies use contractions and relaxations of their rectums to pull in, er, maybe not-so-fresh air. The study authors note that Cnidaria (a group that includes jellyfish and coral) and Platyhelminthes (flatworms) have gastrovascular systems that carry out both the digestive and circulatory functions. These systems are the evolutionary equivalent of killing two birds with one stone, and probably help the animals to save energy.

The sea spider's weird way of pumping hemolymph is a great example of how nature can find many different ways to solve a problem. Next, the researchers hope to more closely investigate how oxygen is transported in other sea creatures with complex guts, including fish lice and other crustaceans.

Bad weather brought down Myanmar army plane, say investigators .
<p>Investigators have concluded that a Myanmar military plane that crashed last month with 122 soldiers, family members and crew on board stalled and nosedived into the Andaman Sea due to bad weather, state media said on Wednesday.</p>The Chinese-made Y-8-200F transport plane disappeared on June 7 during a weekly flight from several southern coastal towns to Myanmar's largest city Yangon.

—   Share news in the SOC. Networks

Topical videos:

This is interesting!