Table 2

Simulated crosses of Lake Malawi cichlids produce transgression at appreciable frequencies.

Species

TG F₂?

% TG

Cynotilapia afra × Pseudotropheus elongatus

H/L

29

Protomelas fenestratus × Protomelas ornatus

H/L

32

Chilotilapia rhoadesii × Maravichromis subocularis

H/L

14.5

Copadichromis quadrimaculatus × Corematodus taeniatus

H

1

Cynotilapia afra × Metriaclima zebra

H/L

22

Protomelas ornatus × Protomelas taeniolatus

H/L

8

Protomelas spilopterus 'blue' × Protomelas fenestratus

H/L

21

Copadichromis virginalis × Chilotilapia rhoadesii

H

20

Petrotilapia nigra × Pseudotropheus elongatus

H/L

29

Metriaclima zebra × Labeotropheus trewavasae

H/L

9.2

Nimbochromis polystigma × Chilotilapia rhoadesii

H/L

31

Pseudotropheus elongatus × Labeotropheus fuelleborni

H

0.1

Metriaclima zebra × Pseudotropheus elongatus

H/L

34

Copadichromis mloto × Otopharynx picta

H

0.1

Labidochromis vellicans × Pseudotropheus elongatus

H/L

19

Ps. Tropheops 'orange chest' × Ps. Tropheus 'red cheek'

H

0.1

Copadichromis quadrimaculatus × Dimidochromis compressiceps

NO

Copadichromis virginalis × Lethrinops altus

NO

Copadichromis virginalis × Tyrannochromis macrostoma

NO

Ps. Tropheops 'orange chest' × Labeotropheus fuelleborni

NO

Transgressive (TG) individuals exhibit kinematic transmission (KT) at least one SD either side of the mean from the distribution of hybrid KT values. H/L indicates whether transgression occurs with values higher and lower than the parents.

Parnell et al. BMC Evolutionary Biology 2008 8:122   doi:10.1186/1471-2148-8-122