| 词条 | Neoendemism |
| 释义 |
Neoendemism is one of two sub-categories of endemism, the ecological state of a species being unique to a defined geographic location. Specifically, neoendemic species are those that have recently arisen, through divergence and reproductive isolation or through hybridization and polyploidy in plants. Paleoendemism, the other sub-category, refers to species that were formerly widespread but are now restricted to a smaller area. Examples"Darwin's finches", residents of the Galápagos Islands, have been used since the 19th century as an example of how the descendants of one ancestor can evolve through adaptive radiation into several species as they adapt to different conditions on various islands. Charles Darwin wrote: ...one might really fancy that from an original paucity of birds in this archipelago, one species had been taken and modified for different ends."[1][2] The Galápagos archipelago is also the home of paleoendemic species.[3] See also
Notes1. ^{{harvnb|Darwin|1845|pp=379–380}} 2. ^{{harvnb|Darwin|1887}} 3. ^{{cite journal | title=The evolutionary and biogeographic origins of the endemic Pectinidae (Mollusca: Bivalvia) of the Galápagos Islands (abstract) | work=Journal of Paleontology | author=Waller, Thomas | doi=10.1666/pleo05-145.1 | volume=81 | pages=929–950}} References
| publisher=John Murray | volume=2| pages= | id=| oclc= | url=}} 1 : Endemism |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。