Phenotypic novelty in experimental hybrids is predicted by the genetic distance between species of cichlid fish

Table 1 The nine homospecific crosses and seven different interspecific hybrid crosses used to measure transgressive segregation with their geographical origin and the number of families per cross type.

cross type	homospecific crosses		n families (n individuals per family)	origin (lake/rivers)
1	Pundamilia nyererei (P. ny)		3 (33, 35, 8)	Victoria
2	Pundamilia pundamilia (P. pun)		3 (27, 15, 16)	Victoria
3	Neochromis omnicaeruleus (N. omni)		3 (7, 5, 30)	Victoria
4	Paralobidochromis rockkribensis (P. rock)		3 (18, 27, 18)	Victoria
5	Paralobidochromis chilotes (P. chil)		3 (17, 4, 16)	Victoria
6	Metriaclima estherae (M. est)		3 (29, 23, 5)	Malawi
7	Astatotilapia burtoni (A. burt)		3 (11, 16, 16)	Tanganyika and rivers
8	Astatotilapia calliptera (A. call)		3 (38, 48, 27)	Malawi and rivers
9	Protomelas taeniolatus (P. taen)		3 (9, 26, 22)	Malawi
cross type	hybrid crosses		n families (n individuals per family)
	male parent	female parent	F1 hybrids	F2 hybrids
1	Neochromis omnicaeruleus	Pundamilia pundamilia	4 (21,29,45,33)	4 (5,10,19,9)
2	Paralobidochromis chilotes	Pundamilia nyererei	2 (24,19)	5 (19,21,2,3,8)
3	Paralobidochromis rockkribensis	Pundamilia pundamilia	3 (37,26,43)	-
4a	Astatotilapia calliptera	Metriaclima estherae	5 (3,11,11,9,6)	8 (2,22,16, 4, 6, 7,4,7)
4b	Metriaclima estherae	Astatotilapia calliptera	3 (2,21,16)	4 (4,12,11,10)
5	Protomelas taeniolatus	Astatotilapia calliptera	2 (21,43)	7 (12,12,13,4,14,5,12)
6	Astatotilapia burtoni	Astatotilapia calliptera	4 (6,2,19,19)	5 (9,10,15,17,16)
7	Pundamilia nyererei	Astatotilapia. calliptera	8 (15,20,5,15,20,30,22,28)	8 (4,18,4,1,9,4,6,17)

The number of photographed and measured individuals per family is shown in brackets. Sex-reversed crosses of the same cross type are indicated by 'a' and 'b'.