OEB Thesis Seminar

2017 Jan 27

Daniel Rice Thesis Defense (Desai Lab)

10:00am

Location: 

Harvard Herbaria Seminar Room

Title:  Statistics and Dynamics of Adaptation from de novo Mutations

Abstract:  All living organisms are shaped by natural selection. Therefore, by studying natural selection as a generic process, we may gain insights into broad questions regarding the diversity of life, the fit of organisms to their environments, and the rate of evolutionary change. The process of natural selection consists of two steps. First, genetic mutations generate distinct genotypes within a population, which vary in their rates of survival and reproduction....

Read more about Daniel Rice Thesis Defense (Desai Lab)
2016 Dec 01

Pierre Baduel Thesis Defense (Bomblies Lab)

9:00am

Location: 

Biological Labs Main Lecture Hall, 16 Divinity Avenue

Title:  Patterns of Genome Evolution and Habitat Adaptation in Tetraploid Arabidopsis arenosa

Abstract:  Polyploidy occurs throughout eukaryotes, and is particularly prevalent among plants. Nearly 40\% of all vascular plant species are thought to be recent polyploids, including a number of invasive species and familiar crops. Despite the high incidence of polyploidy, most studies of its genetic attributes are based on crop and model systems that do not represent natural evolutionary models. Here, we make use of the natural diploid /...

Read more about Pierre Baduel Thesis Defense (Bomblies Lab)
2016 Oct 20

James Crall Thesis Defense (Naomi Pierce Lab)

3:00pm

Location: 

William James Lecture Hall, B1, 33 Kirkland Street

Title:  Foraging in a Complex World: From Individual Flight Performance to Collective Behavior in Bumblebees (Bombus impatiens)

Abstract:  Foraging is a crucial and remarkably complex behavior that is key to survival.  For social insects such as bumblebees, successful foraging depends on a combination of individual traits (e.g. physiological and biomechanical performance of individual workers) and collective behavioral strategies for regulating food intake at the colony level.  Here, I use foraging...

Read more about James Crall Thesis Defense (Naomi Pierce Lab)
2016 Sep 06

Joel Nitta Thesis Defense (Davis Lab)

10:00am

Location: 

Harvard University Herbaria Seminar Room

Title:  Ecology and Evolution of the Ferns of Moorea and Tahiti, French Polynesia

Abstract:  Ferns are the only major clade of land plants with haploid (gametophyte) and diploid (sporophyte) stages that can grow separately from each other for extended periods. The ecology of fern gametophytes, which represent the sexual part of the life cycle, is very poorly known due to their small size and cryptic morphology. In contrast, the conspicuous...

Read more about Joel Nitta Thesis Defense (Davis Lab)
2016 Jul 19

Leandra King Thesis Defense (Wakeley Lab)

10:00am

Location: 

Haller Hall, 24 Oxford Street

Title: Estimating TMRCA, Modeling the Fixed Pedigree, and the Effect of the Y Chromosome on the Chromatin Landscape

Abstract:  This thesis consists of three different chapters on very different topics.

Chapter 1: We demonstrate the advantages of using information at many unlinked loci in order to better calibrate estimates of the time to the most recent common ancestor (TMRCA) at a...

Read more about Leandra King Thesis Defense (Wakeley Lab)
2016 Apr 26

Leonora Bittleston Thesis Defense (Naomi Pierce Lab)

12:00pm to 1:00pm

Location: 

Geological Lecture Hall, 24 Oxford St.

Title: Convergent interactions among pitcher plant microcosms in North America and Southeast Asia

Abstract: Ecosystems are composed of diverse suites of organisms whose interactions are mediated by both the biotic and abiotic constraints of their environments. The complexity of ecosystems makes them both resilient and difficult to understand. Analyzing the patterns and constraints of biodiversity...

Read more about Leonora Bittleston Thesis Defense (Naomi Pierce Lab)
2016 Apr 26

Kolea Zimmerman Thesis Defense (Hartl Lab)

9:00am

Location: 

Geological Lecture Hall, 24 Oxford St.

Title: The genetics of life history traits in the fungus Neurospora crassa

Abstract:  The study of life histories is fundamental to understanding why some organisms live for a very short time while others live for a long time, why some produce thousands of offspring while others produce one, or why some need a mate to reproduce while others can do it on their own. The life histories of many animals and plants are well known because we can easily walk into a forest or field and measure them. Fungi, on the other hand, are hard...

Read more about Kolea Zimmerman Thesis Defense (Hartl Lab)
2016 Apr 26

Shelbi Russell Thesis Defense (Cavanaugh Lab)

2:30pm to 3:30pm

Location: 

Geological Lecture Hall, 24 Oxford St.

Title:  Mode and fidelity of bacterial symbiont transmission and its impact on symbiont genome evolution

Abstract:  Mutualistic symbioses have enabled the colonization of novel habitats and niches in a large array of eukaryotic and bacterial taxa. Reliable mechanisms of symbiont transmission between host generations are necessary to stabilize these associations over evolutionary time. Historically, symbionts have been categorized as either vertically transmitted from the parents to offspring or horizontally...

Read more about Shelbi Russell Thesis Defense (Cavanaugh Lab)
2016 Apr 20

Talia Moore Thesis Defense (Biewener Lab and Losos Lab)

3:15pm to 4:15pm

Location: 

Biological Labs Main Lecture Hall, 16 Divinity Avenue

Title:  An Integrative Investigation of Convergent Bipedal Locomotion in Desert Rodents

Abstract:  Bipedalism is commonly assumed to be an adaptive convergence because it has evolved independently three times in small desert rodents. However, the functional benefits of bipedality in this ecosystem have long been unclear. In this thesis I integrate phylogenetics, functional...

Read more about Talia Moore Thesis Defense (Biewener Lab and Losos Lab)
2016 Apr 01

Heather Olins Thesis Defense (Girguis Lab)

1:00pm to 2:00pm

Location: 

Biological Labs Main Lecture Hall, 16 Divinity Avenue

Title:  Abiotic Influences on Free-Living Microbial Communities in Hydrothermal Vent Ecosystems

 Abstract:  Hydrothermal vent ecosystems are defined by steep thermal and chemical gradients. Chemosynthetic microorganisms are the primary producers in these systems, utilizing the available chemical energy to support substantial animal biomass. The variety of chemical substrates provided by hydrothermal fluid and the surrounding seawater enables a metabolically...

Read more about Heather Olins Thesis Defense (Girguis Lab)
2016 Mar 23

Oliver Hauser Thesis Defense (Nowak Lab)

12:00pm to 1:00pm

Location: 

Seminar Room, Program for Evolutionary Dynamics, 1 Brattle Sq, 6th Floor

Title: Challenging Cooperation: Inequality, Global Commons, Future Generations

Abstract:  Cooperation is abundant in the world around us, spanning all levels of biological and social organisation. Yet the existence and maintenance of cooperation is puzzling from an evolutionary perspective because the costs borne to cooperating individuals put them at an evolutionary disadvantage. We thus require an understanding of mechanisms and institutions that can enable cooperation to thrive and be maintained. In this...

Read more about Oliver Hauser Thesis Defense (Nowak Lab)

Pages