We assigned tadpoles from each clutch to one of
six 250 × 200 × 200 mm plastic tanks with 5 l of dechlorinated
tapwater, following the protocol of a two (sufficient versus insufficient
food supplies) × three (low, middle and high larval densities)
factorial experiment, which allowed us to examine the effects of
food supply and larval density on survival, growth, development
and metamorphosis of tadpoles