Hybridisation is associated with increased fecundity and size in invasive taxa: meta-analytic support for the hybridisation-invasion hypothesis.

Our meta-regression of fecundity responses indicated a marginally significant generation effect across all three taxa, with relative hybrid fecundity increasing over subsequent generations (β gen ± SE = 0.106 ± 0.058, Z = 1.83, P = 0.067, I 2 = 95.6%), although this relationship varied across taxa (Fig. 2 a).

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