EEB Seminar, Friday, October 4: “Rapid climate-mediated movement of an avian hybrid zone reveals temporal variation in genomic introgression and selection”

 

Taylor PhotoYasir Ahmed is hosting Dr. Scott Taylor’s visit this Friday.  A Cornell Center for Comparative and Population Genomics Fellow, Dr. Taylor has been an avid birder since childhood.  He received his B.S. in wildlife biology from the University of Guelph and his Ph.D. in evolutionary biology from Queen’s University in Kingston, Canada. At Queen’s he studied the evolutionary genetics of blue-footed and Peruvian boobies and spent a few months in Peru and Chile living on the Guano Islands.

During his summers as an undergrad, Scott worked as a naturalist at Rondeau, a provincial park in Ontario, and he returned there as the natural heritage education specialist before starting his postdoc at Cornell’s Laboratory of Ornithology. Rondeau is a major migration stopover on the north side of Lake Erie, and Scott continues to lead beginner and advanced bird hikes there.

 

Journal Club Oct 1st

Hey everyone!

This week in in journal club we will be discussing how phenotypic plasticity affects rates of gene evolution. Feel free to swing by room 316 at 12:30.

Papers:

Van Dyken J.D. & Wade M.J. 2010. The genetic signature of conditional expression. Genetics 184: 557-570

Hunt B.G., Ometto L., Wurm Y., Shoemaker D., Yi S.V., Keller L. & Goodisman M.A.D. 2011. Relaxed selection is a precursor to the evolution of phenotypic plasticity. PNAS. 108: 15936-15941

EEB Seminar, Friday, September 27: “The pleasures and pitfalls of bee phylogenetics”

Dr. Minckley is hosting Dr. Shannon Hedtke, Research Associate in the Department of Entomology at Cornell University.  She is presenting a talk titled, “The pleasures and pitfalls of bee phylogenetics.”  Per her web site, she says about herself and her research:  “I study the evolution of complex traits in invertebrates. My developing research program focuses on the ecology and evolution of immune system defense in wild bees and their pathogens. I am using molecular laboratory techniques and bioinformatic research to identify and characterize pathogens, examine their evolution across landscapes, and to evaluate genome evolution in their bee hosts.”

She goes on further to say, “Bees are extremely important pollinators in natural and agricultural settings. Most people know about the importance of the European honey bee in pollination, but there are thousands of bee species that vary considerably in their life history. For example, some bees are solitary rather than living in colonies, some specialize on particular flowers, some nest in the ground while others in wood. Evolutionary changes in these life history traits can affect speciation rates, genome evolution, and evolution of other traits. Because similar traits have independently evolved multiple times within bees, I can use phylogenies to examine patterns of selection, speciation, and genome evolution. In particular, I am interested in immune responses in wild bees to novel and evolving pathogens, and how these responses are affected by agrichemicals. This work is relevant to evaluating the robustness of wild bee communities to our changing environment.”

Hedtke Photo 2

 

9-24 Journal Club

Next week we will be discussing macro consequences of phenotypic plasticity.  Hope to see you there!

West-Eberhard M.J. 1989. Phenotypic plasticity and the origins of diversity. Ann. Rev. Ecol. Syst. 20: 249-278.
Rajakumar R., San Mauro D., Dijkstra M.B., Huang M.H., Wheeler D.E., Hiou-Tim F., Khila A., Cournoyea M. & Abouheif E. 2012. Ancestral Developmental Potential Facilitates Parallel Evolution in Ants. Science 335: 79-82.

EEB Seminar, Friday, September 20: “On the Organic Law of Change ~ Insights from Alfred Russel Wallace’s “Species Notebook” of 1855-1859”

Costa 1Dr. Jack Werren is host to Dr. James Costa, Professor in the Department of Biology at   Western Carolina University and Director of the Highlands Biological Station.  He is presenting a talk entitled, “On the Organic Law of Change ~ Insights from Alfred Russel Wallace’s “Species Notebook” of 1855-1859,” on Friday, September 20.

 

Costa 3Dr. Costa’s interests lay in the ecology and evolution of social insects, in particular the social Lepidoptera and Symphyta.  He is also a scholar of the history of Evolutionary Biology, and has published several articles and books on Darwin, including “The Annotated Origin: A Fascimile of the First Edition of On the Origin of Species”.  Jim has a book on Alfred Wallace coming out this autumn, and will be telling us about his interesting discoveries from Wallace’s “Species Notebook.”

For more information on Dr. Costa and his research, please click on these links:  Dr. James Costa, or the Highlands Botanical Station.

Donut Talk Monday 9/16

Please join us Monday in Hutchison 473 for Dr. John Doebley’s talk called “The genetic architecture of maize domestication: low hanging fruit and dark matter”

Donuts, coffee and tea will be provided.

Journal Club 9/17

Next week we will be reading three papers about genetic assimilation/accommodation. All are welcome to come.

Baldwin J.M. 1896. A new factor in evolution. Am. Nat. 354: 441-451.

Waddington C.H. 1953. Genetic assimilation of an acquired character. Evolution 7: 118-126.

Suzuki Y. & Nijhout H.F. 2006. Evolution of polyphenism by genetic accommodation. Science 311: 650-652.

EEB Seminar, Friday, September 13: “Sex, flies and video tape: The genetics of female mate choice and species isolation in Drosophila”

MoehringDr. Fry is hosting Dr. Amanda Moehring, Assistant Professor, Department of Biology at the University of Western Ontario.  She is presenting a talk titled, ” Sex, flies and video tape:  The genetics of female mate choice and species isolation in Drosophila,” on Friday, September 13.  Dr. Moehring studies the genetics of complex traits. Primarily, her research focuses on the genetic basis of variation in behavior and the genetics of species isolation. She uses the model system of Drosophila due to the extensive genetic and molecular tools this species offers, as well as the availability of species that can be hybridized in the laboratory.  A mixture of quantitative genetics, molecular genetics, behavioral assays and genomics is used in order to understand these complex traits. For more information on Dr. Moehring’s research, please visit her website!

Journal Club 9/10 Introduction to plasticity

This semester journal club will first focus on phenotypic plasticity. We will be reading the following papers next week:
Bradshaw A.D. 1965. Evolutionary significance of phenotypic plasticity in plants. Adv. Genet.13: 115-155.
Pigliucci M. 2005. Evolution of phenotypic plasticity: where are we going now? Trends in Ecology & Evolution 20: 481-486.
(Optional: if you want more background read Scheiner S.M. 1993. Genetics and evolution of phenotypic plasticity. Annu. Rev. Ecol. Syst. 24: 35-68)