Pioneer species are found in area's undergoing secondary succession. For example ecosystems being established by: reducing a fire, deforestation; which quickly colonize open spaces supported by vegetation.
A male grabs the female around her chest with his front legs and clings until she lays her eggs in the water. ... In 2 to 3 weeks the eggs hatch into tadpoles. It can take 3 to 4 months for the tadpoles to absorb their tails, grow legs and develop lungs.
B. Gene. Piebalding is caused by mutant copies of genes.