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Table 1 Various fitness parameters for parental and hybrid crosses

From: First evidence for postzygotic reproductive isolation between two populations of Eurasian perch (Perca fluviatilis L.) within Lake Constance

Crosses Number of females Number of eggs Fertilized Hatched CFM
East. pop. 5 788 (139) 0.953 (0.002) 0.651 (0.108) 0.625 (0.104)
West. pop. 6 773 (56) 0.985 (0.009) 0.835 (0.049) 0.824 (0.054)
F 1 1 7 1030 (61) 0.986 (0.005) 0.517 (0.087) 0.510 (0.086)
F 1 2 9 917 (71) 0.560 (0.149) 0.507 (0.116) 0.344 (0.098)
  1. Mean (± SE) proportions of fertilized eggs, hatched larvae (from fertilized eggs) and CFM (combined fitness measure, for details see text) of the different crosses. East. pop./West. pop. = crosses within populations. Hybrid crosses F11 = female eastern population/male western population, F12 = female western population/male eastern population.