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Shell size variation in Littorina littorea in the western Scheldt estuary
De Wolf, H.; Blust, R.; Backeljau, T. (2001). Shell size variation in Littorina littorea in the western Scheldt estuary. J. Shellfish Res. 20(1): 427-430. hdl.handle.net/10067/386330151162165141
In: Journal of Shellfish Research. National Shellfisheries Association: Duxbury. ISSN 0730-8000, more
Peer reviewed article  

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Keywords
    Estuaries; Grading; Littorina littorea (Linnaeus, 1758) [WoRMS]; Littorina littorea (Linnaeus, 1758) [WoRMS]; ANE, Netherlands, Westerschelde [Marine Regions]; Marine
Author keywords
    environmental stress; estuary; Littorina littorea; salinity; Scheldt river; shell size

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Abstract
    Littorina littorea was collected along a salinity gradient in the Scheldt estuary, located in the South of the Netherlands. Its morphological population structure was investigated to see whether salinity was correlated with shell size and shell weight. Shell size did not increase along the salinity gradient, as was expected, but rather showed a clear size transition between two salinity ranges (i.e., 10-20 ‰, and 21-30 ‰). Animals attain their largest size within a salinity range of 21-30 ‰. Relative shell weight did not vary consistently with salinity.

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