Insular dwarfs and giants more likely to go extinct, finds islands study sciencemagazine
In response to the unique characteristics of island environments, many organisms undergo remarkable evolutionary changes, among the most notable of which include extreme modifications of body size. This phenomenon is known as gigantism or dwarfism—in general, relatives of large continental species tend to become smaller on islands and small species tend to become larger.
To quantify how evolution towards dwarfism and gigantism may have affected the risk and rate of extinction , the researchers used data on fossil and living island mammals including over 1,200 extant and 350 extinct species of insular mammals on 182 islands and paleo-islands worldwide.
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