tube worm

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tube worm

any POLYCHAETE worm that lives in a tube. Tube worms are mainly sedentary.
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(Hypothesis 1): The presence of extensive numbers of mussels within selected regions of the vent faunal assemblage inhibits the colonization and subsequent growth of vestimentiferan tubeworms through depletion of [H.sub.2]S below critical levels.
DQ232896-DQ232899) were observed among symbionts from these tubeworms (Table 2).
Tubeworms, notes Fisher, are "basically a big bag of bacteria stuck inside an animal." The worms, which provide a safe haven for the bacteria, derive all of their energy from the microorganisms, he explains.
Typically they are captured by a vacuum system or within clumps of alvinellid polychaetes, vestimentiferan tubeworms, or bivalves (McLean, 1988; Waren and Bouchet, 1989; Sarrazin et al., 1999; Van Dover, 2003; Govenar et al., 2005).
At a spot doubled "Tubeworm BBQ" by Haymon and others, the divers found lava flows covering animal colonies, with freshly scorched tubeworms that had not yet decayed.
In the 28 years since tubeworms and other organisms were discovered living in volcanic areas along mid-ocean ridges, scientists have been puzzling over how they survive there.
The vent tubeworm Ridgeia piscesia shows a parallel pattern of divergence and asymmetrical gene flow across this boundary (Young, unpubl.
Of course, now scientists have identified many of these animals (including tubeworms, white shrimp, and giant clams).
The methane vents are called cold seeps to distinguish them from another kind of seafloor oasis where jets of superhot water support lavish communities of tubeworms, shrimp and other animals.
Vestimentiferan tubeworms are found at deep-sea hydrothermal vents and cold seeps characterized by chemosynthetic primary production (see Van Dover, 2000; McMullin et al., 2003).
Expecting to find common seafloor rocks called basalts, scientists were surprised to pull up fragments and boulders of massive sulfide covered with small tubeworms. They had discovered the fifth and, at the time, newest site of hydrothermal venting on the seafloor, a place now known as the Main Endeavour Field.
Searching along the barren desert that lies 2,800 meters below the sea surface, scientists have discovered a lush community of fish, crabs, giant tubeworms and other animals in a field of hot springs.