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:


(Date:3/29/2017)...  higi, the health IT company that operates the ... , today announced a Series B investment from ... The new investment and acquisition accelerates higi,s strategy to ... population health activities through the collection and workflow integration ... collects and secures data today on behalf of over ...
(Date:3/24/2017)... Research and Markets has announced the addition of the ... Industry Forecast to 2025" report to their offering. ... The Global Biometric Vehicle Access ... 15.1% over the next decade to reach approximately $1,580 million by ... and forecasts for all the given segments on global as well ...
(Date:3/22/2017)... 21, 2017 Optimove , provider ... retailers such as 1-800-Flowers and AdoreMe, today announced ... and Replenishment. Using Optimove,s machine learning algorithms, these ... and replenishment recommendations to their customers based not ... of customer intent drawn from a complex web ...
Breaking Biology News(10 mins):
(Date:8/21/2017)... ... August 21, 2017 , ... ... Island of Hawaii, is pleased to announce the first Delos Wellness Signature™ residence ... Sotheby’s International Realty is working together with listing agent Kelly Allen, R(S) of ...
(Date:8/21/2017)... Baltimore, Maryland (PRWEB) , ... August 21, 2017 ... ... has partnered with a leading Chinese bio security firm, to bring its proprietary ... As part of the relationship, the Chinese firm has purchased an undisclosed ...
(Date:8/21/2017)... Linda, Ca (PRWEB) , ... August 21, 2017 ... ... has arranged for two speakers for this two-part educational webinar, in which attendees ... complex subunit, and associated protein factor composition. Along with an overview of the ...
(Date:8/18/2017)... ... August 18, 2017 , ... Producers of ... Federal Hybrids, Inc. in an upcoming episode, scheduled to broadcast fourth quarter 2017. ... explore Federal Hybrids, the independent, family-owned seed company. Educating audiences about its broad ...
Breaking Biology Technology:
Cached News: