Unfortunately, immigration did occur, but the founder effect and adaptive differentiation, which could eventually lead to peripatric speciation, were statistically and biologically significant between the island populations after a few years.
Desafortunadamente, produciuse inmigración, pero o efecto fundador e a diferenciación adaptativa, que podían finalmente levar á especiación peripátrica, eran estatística e bioloxicamente significativos entre as poboacións das illas despois de poucos anos.