Speciation 2 Brian O’Meara EEB464 Fall 2015 .

Speciation 2

Brian O’MearaEEB464 Fall 2015

http://www.freakingnews.com/Hybrid-Animals-Pictures--563.asp

• Hybridization

• Reinforcement

• Self-incompatibility & diversity

• Cytoplasmic incompatibility

Hybridization - bad

Colliard et al. Strong reproductive barriers in a narrow hybrid zone of West-Mediterranean green toads (Bufo viridis subgroup) with Plio-Pleistocene divergence.

BMC Evol Biol (2010) vol. 10 pp. 232

Hybridization - bad?

Rieseberg et al. Hybridization and the colonization of novel habitats by annual sunflowers. Genetica (2007) vol. 129 (2) pp. 149-65

Hybridization - bad?

Rieseberg et al. Hybridization and the colonization of novel habitats by annual sunflowers. Genetica (2007) vol. 129 (2) pp. 149-65

Hybridization - bad?

Rieseberg and Willis. Plant speciation. Science (2007) vol. 317 (5840) pp. 910-4

Hybridization - bad?

Schwarz et al. Host shift to an invasive plant triggers rapid animal hybrid speciation. Nature (2005) vol. 436 (7050) pp. 546-9

Hybridization - bad?

Schwarz et al. Host shift to an invasive plant triggers rapid animal hybrid speciation. Nature (2005) vol. 436 (7050) pp. 546-9

Cruzan. Patterns of introgression across an expanding hybrid zone: analysing historical patterns of gene flow using nonequilibrium approaches. New Phytologist (2005) vol. 167 (1) pp. 267-278

Bob Peterson

Cruzan. Patterns of introgression across an expanding hybrid zone: analysing historical patterns of gene flow using nonequilibrium approaches. New Phytologist (2005) vol. 167 (1) pp. 267-278

Rice and Salt. Speciation via disruptive selection on habitat preference: experimental evidence. American Naturalist (1988) vol. 131 (6) pp. 911-917

Rice and Salt. Speciation via disruptive selection on habitat preference: experimental evidence. American Naturalist (1988) vol. 131 (6) pp. 911-917

Treatm

ent

Contro

lSpatiotemporal Spatial

Takayama and Isogai. Self-incompatibility in plants. Annu Rev Plant Biol (2005) vol. 56 pp. 467-489

Parameters from Goldberg et al. 2010

Haldane’s rule

Wu et al. Haldane's rule and its legacy: why are there so many sterile males?. Trends Ecol Evol (1996) vol. 11 (7) pp. 281-284

Wade. Infectious speciation. Nature (2001) vol. 409 (6821) pp. 675-677

Wade. Infectious speciation. Nature (2001) vol. 409 (6821) pp. 675-677

Modified from Wade. Infectious speciation. Nature (2001) vol. 409 (6821) pp. 675-677

WA

WA

WA WA

WB

WB

WB WB

Werren et al. Wolbachia: master manipulators of invertebrate biology. Nature Reviews Microbiology (2008) vol. 6 (10) pp. 741-751