Before revision: Common bottlenose dolphin The warbler finch and the Cocos Island finch are viewed as separate ecotypes.Encyclopedia of life sciences, 2007, John Wiley & Sons, "Darwin's Finches" The Scots pine (Pinus sylvestris) has 20 different ecotypes in an area from Scotland to Siberia, all capable of interbreeding.Introduction to Ecology (1983), J.C. Emberlin, chapter 8 Ecotype distinctions can be subtle and do not always require large distances; it has been observed that two populations of the same Helix snail species separated by only a few hundred kilometers prefer not to cross-mate, i.e., they reject one another as mates.
After revision: The warbler finch and the Cocos Island finch are viewed as separate ecotypes.Encyclopedia of life sciences, 2007, John Wiley & Sons, "Darwin's Finches" The Scots pine (Pinus sylvestris) has 20 different ecotypes in an area from Scotland to Siberia, all capable of interbreeding.Introduction to Ecology (1983), J.C. Emberlin, chapter 8 Ecotype distinctions can be subtle and do not always require large distances; it has been observed that two populations of the same Helix snail species separated by only a few hundred kilometers prefer not to cross-mate, i.e., they reject one another as mates.