Download Adaptive Radiation Lab

An adaptive radiation occurs when a single lineage
produces many descendant species that live in a
wide diversity of habitats and make their living in a
variety of ways. – Freeman 2005
http://www.rit.edu/%7Erhrsbi/GalapagosPages/DarwinFinch.html
Breeding Ecology
~10 mya
Arrival in
Hawaii, probably
on Gardner Island
Necker or French Frigate Island Population
Gardner Population
Copyright © London Wildlife Trust
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~4.2 mya Kauai
Plants
Fast Streams
Arrival in
Hawaii
Streams
Springs and pools
~1.9 mya
Kauai
Kauai
(varied habitats)
Adaptive Radiation
Must satisfy 4 criteria (Schluter 2000):
Seeps, springs,
waterfalls
1. Common ancestry of component species
Terrestrial and unknown
Plants
10 mya
Fast Streams
Arrival in
Hawaii
2. Phenotype-environment correlation
3. Trait utility
4. Rapid speciation
Streams
Springs and pools
Hawaii’s Megalagrion
damselflies as a case
study of adaptive radiation
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