Evidence of allopatric speciation: genetic divergence in refuges mtDNA clades: 3-4 mya freshwater refuges separated by Salt water barrier.

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Presentation transcript:

Evidence of allopatric speciation: genetic divergence in refuges mtDNA clades: 3-4 mya freshwater refuges separated by Salt water barrier

Part of one clade of Rana pipiens: divergence and contact Species isolated by habitat breeding season vocalization hybrid inviability Allopatric and parapatric distributions

Conservation of climatic niche space: cross predictions of the ranges of two species

Relative importance of ecological segregation and geographic distance in producing genetic divergence SI = sexual isolation index laboratory mating trials Leaf beetle: Neochlamisus bebbianae

Mating system, intersexual selection, reproductive isolation, and speciation: Promiscuous males vs. monogamous pairs Sister clades

Enhancement of prezygotic barriers to interspecific crosses

Peripatric speciation: founder effect? Paradise kingfishers

Parapatric speciation in progress across c. 300 feet of ground Grass: Anthoxanthum odoratum Self-pollination vs. cross pollination

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