7-Speciation

7-Speciation - 1/30/2010 Speciation Cladogensis vs....

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1/30/2010 1 Speciation • Cladogensis vs. Anagenesis • How many species are there? • What is a species? – Species concepts – Problems with species concepts • Modes of speciation • Species names vs. species as entities Population species, how? Cladogenesis vs. anagenesis How many species are there? (Bugs Rule) Species? Cryptic species or one taxon?
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1/30/2010 2 var. pacifica var. lanulosa var. alpicola Polytypic species Biological Species Concept- Morphological species concept Phylogenetic species concept Cryptic species or one taxon?
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1/30/2010 3 How do species originate? Modes of speciation Allopatric Parapatric Sympatric Cyamus ovalis- an example of allopatric speciation female male C. ovalis C. gracilis C. erraticus Vicariant allopatric speciation Allopatric species
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4 Allopatric speciation- founder effect Founder effect and subsequent vicariance Has white sand habitat specialization led to parapatric speciation? Sympatric speciation- Pozo Azul,
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This note was uploaded on 02/13/2010 for the course BIO 17017 taught by Professor Minckley during the Spring '10 term at Rochester.

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7-Speciation - 1/30/2010 Speciation Cladogensis vs....

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