Not whale - fall specialists , Osedax worms also consume fishbones Greg

نویسندگان

  • Shana K. Goffredi
  • Shannon B. Johnson
  • Robert C. Vrijenhoek
چکیده

Greg W. Rouse1,*, Shana K. Goffredi2, Shannon B. Johnson3 and Robert C. Vrijenhoek3 Scripps Institution of Oceanography, UCSD 9500 Gilman Drive, La Jolla, CA 92093-0202, USA Biology Department, Occidental College, 1600 Campus Road, Los Angeles, CA 90041, USA Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039-9644, USA *Author for correspondence ([email protected]).

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Not whale-fall specialists, Osedax worms also consume fishbones.

Marine annelid worms of the genus Osedax exploit sunken vertebrate bones for food. To date, the named species occur on whale or other mammalian bones, and it is argued that Osedax is a whale-fall specialist. To assess whether extant Osedax species could obtain nutrition from non-mammalian resources, we deployed teleost bones and calcified shark cartilage at approximately 1000 m depth for five m...

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Marine worms (genus Osedax) colonize cow bones.

Bone-eating worms of the genus Osedax colonized and grew on cow bones deployed at depths ranging from 385 to 2893m in Monterey Bay, California. Colonization occurred as rapidly as two months following deployment of the cow bones, similar to the time it takes to colonize exposed whalebones. Some Osedax females found on the cow bones were producing eggs and some hosted dwarf males in their tubes....

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Bone-eating worms from the Antarctic: the contrasting fate of whale and wood remains on the Southern Ocean seafloor

We report the results from the first experimental study of the fate of whale and wood remains on the Antarctic seafloor. Using a baited free-vehicle lander design, we show that whale-falls in the Antarctic are heavily infested by at least two new species of bone-eating worm, Osedax antarcticus sp. nov. and Osedax deceptionensis sp. nov. In stark contrast, wood remains are remarkably well preser...

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Fossil traces of the bone-eating worm Osedax in early Oligocene whale bones.

Osedax is a recently discovered group of siboglinid annelids that consume bones on the seafloor and whose evolutionary origins have been linked with Cretaceous marine reptiles or to the post-Cretaceous rise of whales. Here we present whale bones from early Oligocene bathyal sediments exposed in Washington State, which show traces similar to those made by Osedax today. The geologic age of these ...

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The discovery of a natural whale fall in the Antarctic deep sea

Large cetacean carcasses at the deep-sea floor, known as ‘whale falls’, provide a resource for generalistscavenging species, chemosynthetic fauna related to those from hydrothermal vents and cold seeps, and remarkable bone-specialist species such as Osedax worms. Here we report the serendipitous discovery of a late-stage natural whale fall at a depth of 1444 m in the South Sandwich Arc. This di...

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تاریخ انتشار 2011