How deep can a fish go? Scientists may have answer


How deep can a fish go? Scientists may have answer - They may look like guts stuffed in cellophane, but five fish hauled up from near-record depths off the coast of New Zealand are providing scientists with new insights into how deep fish can survive.

In a paper published this week in the Proceedings of the National Academy of Sciences, scientists from the U.S., Britain and New Zealand describe catching translucent hadal snailfish at a depth of 7 kilometers (4.3 miles).

This photo taken in late 2011 and released by University of Aberdeen, shows hadal snailfish 7,500 meters down, at the bottom of the Kermadec Trench near New Zealand. Scientists say the snailfish are providing new insights into how deep fish can survive. (AP Photo/University of Aberdeen) MANDATORY CREDIT

By measuring levels of a compound in the fish that helps offset the effects of pressure, the scientists say they've concluded that fish likely can't survive below about 8,200 meters (5.1 miles). That would mean no fish at all live in the deepest one-quarter of the world's oceans.

The snailfish have little pigmentation due to the lack of light in their environment, hence their translucent appearance.

New Zealand marine ecologist Ashley Rowden, a co-author of the paper, said nobody had caught a snailfish in nearly 60 years and so he wasn't overly hopeful when they sent down a box-like trap into the Kermadec Trench near New Zealand in late 2011.

He said they used mackerel as bait to attract the small sandhopper-like creatures the snailfish feed upon.

This photo taken in late 2011 and released by University of Aberdeen, shows a hadal snailfish that was caught in a trap at a depth of 7,000 meters in the Kermadec Trench near New Zealand. Scientists say the snailfish are providing new insights into how deep fish can survive. (AP Photo/University of Aberdeen) MANDATORY CREDIT

"When it came up, it was just amazing to see. It was 'Oh my God, we've got the fish, and we've got more than one,'" Rowden said.

Rowden said he put on gloves and carefully picked up one of the fish.

"It was like a water-filled condom," he said. "A sloppy, gelatinous mass that moves between your hands. It was very cool, and very strange to see its organs and everything."

Rowden, who works at New Zealand's National Institute of Water and Atmospheric Research, said scientists had previously speculated fish couldn't live below certain depths but that catching the fish and studying them helped provide more scientific certainty.

The fish are the second-deepest recorded catch. In 1970, a boat off the coast of Chile reported catching a cusk eel at a depth of 8,370 meters in a trawl net, although questions remain whether that fish was caught at the ocean floor or higher up as the net was hauled in.

The paper's lead author, Paul Yancey of Whitman College in Washington state, said they were able to measure the levels in the fish of trimethylamine oxide, a molecule that protects proteins from pressure. He said there appears to be a natural limit to the amount of the molecule a fish can contain.

Yancey said the molecule is already being studied for its human applications, including in the treatment of glaucoma.

Meanwhile, he said, if the hadal snailfish look strange enough, they would smell terrible when they decompose. That, he said, is because the molecule has another property — it gives fish their distinctive smell, so the deeper they live, the stronger they stink.

Yancey is keeping his snailfish on ice.

This article originally appeared in :  How deep can a fish go? Scientists may have answer Associated Press | By NICK PERRY | March 5, 2014 10:33 AM




No comments:

Post a Comment

Abraham Lincoln Accident Acting Adele Adolf Hitler Ahok Air Susu Ibu Aisha Gaddafi Albert Einstein Alicia Keys Alien Amanda Knox American Idol Amitabh Bachchan Amy Winehouse Angelina Jolie Animal Anna Chapman Anti Islam Apple Archeology Arnold Schwarzenegger Artist Aung San Suu Kyi Autism Avatar Barack Obama Bencana Alam Berpelukan Biography Blake Fielder Blog Bollywood Bon Jovi Brad Pitt Britney Spears Brittany Murphy Broadway Bruce Willis Bryan Adams Buah - Buahan Budaya Cameron Diaz Carla Bruni Celebration Celebrity Cell Phone Charlie Sheen Christina Aguilera Christopher Tierney Computer Conspiracy Credit Card Criminal Cristiano Ronaldo David Cameron David Walliams Demi Moore Depression Diet Dinosaurs Disaster Discovery Economic Elin Nordegren Elton John Elvis Presley Evolution Facebook Famous Farrah Fawcett Fashion Fenomena Fidel Castro Film Finance Fisikologi Anak Frank Sinatra Games Gary Lineker Global Warming Grammy Awards Guns N' Roses Haji Halle Berry Harry Potter Health Helen Mirren Helena Christensen History Hoaxes Holiday Hollywood Home Hong Kong Hugo Chavez Humanity Humor Ibadah Ramadhan iChildren Innocence of Muslims Insomnia Insurance Internet Irina Shayk Isaac Newton James Franco Jane Fonda Janet Jackson Javier Bardem Jennifer Aniston Jennifer Lopez Jermaine Jackson Jesus Jewelry Jhon Terry Joaquin Phoenix John Lennon John Prescott Jokowi Journalism Julia Roberts Justin Bieber Karina Smirnoff Kate Middleton Katherine Heigl Katy Perry Kehamilan Kendra Wilkinson Kesehatan Payudara Kesehatan Rambut Kiamat Kim Kardashian King Abdullah King Abdullah II King Salman Korupsi Indonesia Kristen Stewar Lady Diana Lady GaGa Law Lee DeWyze Legend Leonardo DiCaprio Lifestyle Lily Allen Lindsay Lohan Lionel Messi Madonna Margaret Thatcher Mariah Carey Marilyn Monroe Mario Balotelli Mark Zuckerberg Marriage Mel Gibson Michael Jackson Michelle Obama Mick Foley Mick Jagger Mike Tyson Miley Cyrus Miranda Kerr Miss Universe Mistery Mitos dan Fakta Moammar Gadhafi Modelling Mona Lisa Money Mothers Music Mystery Naomi Watts Nelly Furtado News Nia Sanchez Nicolas Cage No Smoking Nuclear Obat - Obatan Olivia Newton-John's Oprah Winfrey Orang Kantoran Oscars Pamela Anderson Parent Paris Hilton Pasangan Hidup Patricia Neal Paul McCartney Pejabat Pendidikan Penelope Cruz Performers Permainan Anak Personality Photo Pippa Middleton Pisikologi Remaja Politics Pollution Prince Charles Prince Felipe Prince George Prince Harry Prince Philip Prince Salman Prince William Princess Princess Diana Princess Lilian Princess Victoria Producer Produk Kecantikan Queen Elizabeth Queen Helen Relationships Religion Ri Sul-Ju Ricky Martin Rihanna Rokok Rolling Stone Royal Baby Royal Family Salma Hayek Sandra Bullock Sarah Palin Scandal Science Scientists Selena Gomez Sepak Bola Serena Williams Shah Rukh Khan Sharon Stone Simon Cowell Songwriter Sophie Reade Space Spiritual Sport Storm Stress Suami Isteri Super Bowl Sylvester Stallone Taylor Swift's Technology Television Teroris Tiger Woods Tips and Tricks Tips Kesehatan Tips Komputer Tips Pria Tom Cruise Tony Curtis Top 10 Travel Van Halen Vatican Victoria Beckham Wedding Whitney Houston Woman World Cup Yahudi Yoga Zsa Zsa Gabor