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Madreporite function and fluid volume relationships in sea urchins.
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An effort was made to demonstrate an influx of seawater through the madreporites of sea urchins and to evaluate how such an influx, along with osmotic differences and other factors, could contribute to fluid homeostasis. Fluorescent microbeads placed in the medium of Strongylocentrotus droebachiensis were taken up into the pore canals and stone canal and distributed (in small numbers) to the distal tube feet, confirming a slow bulk inflow of seawater through the madreporite, where it is partially purified. Probably none of this fluid stream is diverted to the perivisceral coelom (as it is in ...
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Newspaper article from: The Washington Post
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Respiratory and acid-base physiology of the purple sea urchin, Strongylocentrotus purpuratus, during air exposure: presence and function of a facultative lung.
Magazine article from: The Biological Bulletin
; ...terminates externally in tube feet, which make up the major...dioxide through their tube feet (Fenner, 1973). The tube feet are waved in the water...that is circulated in the tube feet. This fluid then circulates...exposed to air, however, the tube feet ...
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ASK THE GLOBE
Newspaper article from: The Boston Globe
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Newspaper article from: Sunday Star-Times
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 "Courier News (Elgin, IL)")
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An echi- what?
Newspaper article from: Courier News (Elgin, IL)
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A thorny answer to a smelly question
Newspaper article from: The Boston Globe
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 "Press and Journal, The Aberdeen (UK)")
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New harvest for salmon company
Newspaper article from: Press and Journal, The Aberdeen (UK)
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Scotland cashes in on growing taste for urchins
Newspaper article from: The Independent - London
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Magazine article from: Ranger Rick
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