Be in the same place and separate it
2006/03/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria
The researchers of the evolution did not find a definitive answer to the creation of a species in the natural environment, being in the same place. Now the researchers have seen two examples of this phenomenon, so the answer to the question can be close.
In fact, one way to differentiate species is the occupation of new spaces. Being elsewhere, it is possible that an original species evolves towards another, by natural selection. However, few examples are known against it, so the researchers of the evolution have obtained hopefully the results of two studies published in the journal Nature.
One of them analyzes the evolution of the curly palm that lives on an island of the South Pacific from the Palm of Kentia. They separated a million or two years ago, and although 20% of the island both live together at the same time, there are six weeks difference between the blooms of one and the other.
Another example is found in a lake in Nicaragua. The lake is five kilometers wide, in which there are two very similar species of fish. According to genetic studies, it has differentiated itself, and very recently the distinction took place, only 10,000 years ago. However, they have seen that they are two species, since they cannot be crossed and one lives in the bottom of the lake and the other not.
According to experts, these cases can be more numerous than expected. At least these two examples have allowed us to better understand the phenomenon.
