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Table 3

The mean diameter (μm) statistical parameters of size of glochidia on the gills of salmon parr, and water temperature in the Syskyänjoki River. * – the size of glochidia significantly different () between October and December, ** – the size of glochidia significantly different () between December and May.

Parameter/Date 08.10.2013 05.12.2013 07.05.2014

N studied 45 24 52
Mean 57.4 72.5* 108**
Std. error 2.9 4.0 3.9
Variance 367.9 390.7 784.6
Water temperature 5.6 0.2 8.4

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