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SUMMARY:Speciation via species interactions: exploring the indirect effects
  of reinforcement
LOCATION:Anatomy/Zoology Building W118
TZID:America/Denver
DTSTART:20154001T000000
UID:2026-05-04-05-08-18@natsci.colostate.edu
DTSTAMP:20260504T050818
Description:Reproductive interactions among species represent a powerful ev
 olutionary force driving diversification\, particularly when organisms int
 eract with a mosaic of other taxa across their geographic distribution. Th
 eory predicts that spatial variation in community structure can lead to di
 vergent selection on reproductive behaviors across geography\, when differ
 ent phenotypes are\nfavored in different species assemblages. A critical o
 utcome of this diversifying selection is the evolution of reproductive iso
 lation across conspecific populations\, as male signals differentiate and 
 females evolve preferences for local signals. Thus\, species mosaics provi
 de a key opportunity to\ninvestigate the direct and indirect effects of re
 inforcement in contact zones. In this seminar\, I will present recent work
  on chorus frogs (Pseudacris) illustrating how interactions between specie
 s via reinforcement not only lead to increased isolation between species b
 ut also indirectly promote the evolution of reproductive isolation within 
 species\, potentially initiating a cascade of speciation events. 4:00 pm
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