HOME >> BIOLOGY >> NEWS
Giant deep-sea tubeworm's meal ticket comes in as a skin infection

Giant tubeworms found near hydrothermal vents more than a mile below the ocean surface do not bother to eat: lacking mouth and stomach, they stand rooted to one spot. For nourishment, they rely completely on symbiotic bacteria that live within their bodies to metabolize the sulphurous volcanic soup in which they both thrive.

But the microscopic larvae of these giants are born bacteria-free, with a complete digestive system. Juveniles swim, hunt, and eat before permanently settling down and taking up with their microbial partners. Now the idea that the larvae acquire their symbionts by eating them has been overturned. By collecting the giant worms' tiny spawn from traps laid on the ocean floor, oceanographers have shown that the sulfur-eating bacteria infect the larvae through their skin.

Andrea Nussbaumer and Monika Bright of the University of Vienna, and Charles Fisher, professor of biology at Penn State, report their findings this week in the British journal Nature.

Previous groups had shown that, after a larva quits swimming and attaches itself to the bottom of the ocean near a volcanic vent, its mouth disappears and its stomach shrinks away, even as it grows a specialized organ called the trophosome that houses the symbiotic bacteria it collects. "It is an absolutely obligate symbiosis for the worm," Fisher explains. "If the larvae do not get the right symbiont, they die."

The prevailing hypothesis was that the appropriate bacteria were gathered into the stomach during feeding, somehow escaped digestion, and by remaining in the stomach caused it to undergo metamorphosis into the trophosome.

But those conclusions were based on a very small set of observations, due to the extreme difficulty of obtaining the tubeworm's larval and juvenile stages. The only way to collect these delicate organisms is directly from the ocean floor, at 2500 meters
'"/>

Contact: Barbara K. Kennedy
science@psu.edu
814-863-4682
Penn State
19-May-2006


Page: 1 2 3

Related biology news :

1. Giant magnetocaloric materials could have large impact on the environment
2. Giant Sauropod dinosaur found in Spain
3. A giant among minnows: Giant danio can keep growing
4. Giant pandas see in color
5. Giant insects might reign if only there was more oxygen in the air
6. Giant ape lived alongside humans
7. International team to honor 30th anniversary of deep-sea vent discovery in Galpagos
8. Study warns deep-sea mining may pose serious threat to fragile marine ecosystems
9. New deep-sea hydrothermal vents, life form discovered
10. Volcanic plumbing dictates development of deep-sea hydrothermal vents
11. Long-lived deep-sea fishes imperiled by technology, overfishing

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Giant deep sea tubeworm meal ticket comes skin infection

(Date:1/22/2015)... YORK and POINT ROBERTS, Washington ... news source covering leading sectors including technology and tech stocks, ... Privacy marketplace featuring master pickpocket and security consultant Apollo ... is stolen and talks about the Wocket™ biometric smart wallet, ...
(Date:1/22/2015)... N.C. , Jan. 22, 2015 Infinisource has launched ... of the G2 model. The G2 sets a higher standard ... iSolved human capital management solution. With plug-and-play installation, touch screen ... time clock provides a robust time collection solution for the ...
(Date:12/19/2014)... 18, 2014 Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ... 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - ... http://photos.prnewswire.com/prnh/20130307/600769 Following the ... fingerprint reading feature with the iPhone 5S. It is ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
(Date:1/22/2015)... January 22, 2015 Crystal Diagnostics (CDx) Xpress ... it has received AOAC-PTM Certifications for the six non-O157 Shiga ... O145; collectively referred to as STEC or the “Big-6”) as ... forming unit (cfu) per 325 g of raw ground beef ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Selexis SA, ... mammalian Research Cell Banks (RCBs) used for drug discovery ... Cell Banks will include Next-Generation Sequencing (NGS) ... architecture de-risks biologic manufacturing by ensuring the integrity of ...
(Date:1/22/2015)... Jan. 22, 2015   GenoSpace , a precision medicine software ... enable the broad use of genomic, imaging and other biomedical ... of Michelle Munson , CEO of Aspera, an IBM ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 "We are ...
(Date:12/24/2014)... 2014  Vermillion, Inc. (Nasdaq:   VRML), a bio-analytical ... that the Company closed its previously announced private ... Jack W. Schuler , Birchview Fund LLC and ... before offering expenses.  The proceeds will be used ...
Breaking Biology Technology:Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3
Cached News: