Explore a comprehensive lecture on bridging micro- and macroevolution in the ancient insect order Odonata. Delve into the evolution of body size, stasis, macroevolutionary constraints, and changing latitude-body size relationships over time. Examine the impact of birds on large odonates in the tropics and investigate sexual selection in these insects. Focus on the common bluetail damselfly Ischnura elegans to understand sexual conflict, frequency-dependent selection, and female color polymorphisms. Learn about ontogeny of color development, geographic clines in androchrome female frequencies, and phylogenetic hypotheses for the origin and evolution of female color polymorphisms. Discover how high-density, open habitats promote female polymorphisms and gain insights into the interplay between micro- and macroevolutionary processes in this fascinating insect order.
Bridging Micro- and Macroevolution in an Old Insect Order
Overview
Syllabus
Intro
Bridging micro- and macroevolution in an old insect order
"Model systems" in evolutionary biology Darwin's finches
Can Odonata contribute to bridge micro- and macroevolution?
Evolution of body size and the problem of stasis
Macroevolutionary constraints on interspecific body size divergence
The latitude-body size relationship has changed over macroevolutionary time
Did birds drive large odonates out of the tropics?
Some macroevolutionary and macroecological aspects of sexual selection in odonates
Sexual conflict and frequency-dependent selection in the common bluetail damselfly Ischnura elegans
Phenotype (female morph)
Morph frequencies remain stable over many generations
Ontogeny of colour development and sexual maturation
Colour development during sexual maturation of female morphs: a role for Doublesex and the Dmri-gene family
Geographic clines in the frequency of androchrome females
Combining molecular, biogeographic and paleogeographic dating
Phylogenetic hypotheses for the origin of female colour polymorphism
Multiple gains and losses of female-limited colour polymorphisms
Micro- and macroevolutionary gains and losses of polymorphisms
High-density, open habitats promote female polymorphisms
Summary and Conclusions
Acknowledgements: funding, lab & collaborators
Taught by
EvoEcoSeminars
