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The Distribution of Echinoderes coulli (Kinorhyncha) along an Interstitial Salinity Gradient

Thomas D. Horn
Transactions of the American Microscopical Society
Vol. 97, No. 4 (Oct., 1978), pp. 586-589
Published by: Wiley on behalf of American Microscopical Society
DOI: 10.2307/3226174
Stable URL: http://www.jstor.org/stable/3226174
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Distribution of Echinoderes coulli (Kinorhyncha) along an Interstitial Salinity Gradient
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Abstract

The scanning electron microscope reveals a conspicuous nephridiopore in the eleventh segment of E. coulli. This euryhaline species appears to be limited by a persistent interstitial salinity of 12‰. The population was found to exist in an interstitial salinity as high as 42‰ the highest salinity from which kinorhynchs have been reported. In a preliminary laboratory experiment, 25 of 31 specimens were able to survive a salinity of 1‰, for at least 11 h.

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