Under what conditions can sympatric (ecological) speciation occur?

Occurs when the area occupied by the species changes or expands. Example: Darwin’s finches, when settling on a new island, Finches adapted to new habitat conditions, in this regard, new species were formed, another example: the species of Sevan trout have different spawning grounds (the emergence of several species is explained by the existence between individuals of seasonal isolation associated with reproduction).

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