Table 3 Generalized linear model (GLZ) of the relationship between the number of glochidia found on P. phoxinus within each 5 m buffer (Poisson distribution, log link) and the sum of glochidia on G. gobio, number of U. crassus individuals, site, and season.

Intercept

2.94

0.027

11,469

< 0.00001

G. gobio Sum glochidia

−0.0133

0.0023

34.5

< 0.00001

N Uc

−0.0002

0.0005

0.12

0.726

N Uc*G. gobio Sum glochidia

0.0007

0.00006

117.9

< 0.00001

Site 1

0.084

0.024

11.9

0.0006

Site 2

0.138

0.034

16.4

< 0.00005

Season (2015)

0.327

0.018

317.4

< 0.00001

Season*site 1

−0.129

0.024

27.7

< 0.00001

Season*site 2

0.238

0.028

70.7

< 0.00001