Page 9 - Colliard_ali_2010

Colliard et al. BMC Evolutionary Biology 2010, 10:232 Page 9 of 16
http://www.biomedcentral.com/1471-2148/10/232

Figure 5 Crosses of green toads from Sicily. a: Cross B. balearicus female × B. siculus male; b: reciprocal cross B. siculus × B. balearicus; c-h F 1 -
offspring from cross shown in a; c-d: offspring in the age of seven days, showing dead and malformed embryos and tadpoles in comparison
with apparently normally developing ones; e: about one-months old normal tadpole (left) in comparison with leucistic “large” tadpole (right); f:
in the age of two months (from left to right): retarded tadpole, “giant” leucistic tadpole with developmental arrest, malformed dwarfed tadpole,
leucistic tadpole that turned later out to be incapable of metamorphosis, apparently normally metamorphosing tadpole; g: adult, two-year-old
F 1 -male; h: adult, two-year-old F 1 -female. Photographs: M. Stöck.