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Darwin's finches on the Galapagos Islands are a model system for the study of adaptive radiation. [10] Today represented by approximately 15 species, Darwin's finches are Galapagos endemics famously adapted for a specialized feeding behavior (although one species, the Cocos finch ( Pinaroloxias inornata ), is not found in the Galapagos but on ...
All Hawaiian tarweeds trace their lineage back to a species of Pacific coast tarweed, very similar to extant species like Carlquistia muirii. [12] The last common ancestor of the silversword alliance was likely a mat and rhizome forming plant not more than .3 metres (0.98 ft) tall, with a chromosome number of 2n = 16, and perhaps another similar species.
[2] [6] The Hawaiian honeycreepers are the sister taxon to the Carpodacus rosefinches. Their ancestors are thought to have been from Asia and diverged from Carpodacus about 7.2 million years ago, and they are thought to have first arrived and radiated on the Hawaiian Islands between 5.7–7.2 million years ago, which was roughly the same time ...
2.6.4 Recurrent laryngeal nerve in ... 4.2 Island biogeography. ... The gradual spreading of organisms with adaptive radiation is known as divergent evolution.
An evolutionary radiation is an increase in taxonomic diversity that is caused by elevated rates of speciation, [1] that may or may not be associated with an increase in morphological disparity. [2] A significantly large and diverse radiation within a relatively short geologic time scale (e.g. a period or epoch ) is often referred to as an ...
For example, Albinaria land snails on islands in the Mediterranean [1] and Batrachoseps salamanders from California [2] each include relatively dispersal-limited, and closely related, ecologically similar species often have minimal range overlap, a pattern consistent with allopatric, nonecological speciation.
For example, 50% of endemic bird areas are found on islands. [2] Endemism is often the result of adaptive radiation. [1] Adaptive radiation is when a single species colonizes an area and rapidly diversifies to fill all of the available niches. A common example is the assemblage of finch species documented by Charles Darwin in the Galapagos ...
Adaptive radiation; Honeycreepers This page was last edited on 16 February 2025, at 21:20 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4 ...