Dr. Robin Tinghitella
Asst. Professor, Dept. of Biological Science
University of Denver
When: Sept. 7, 2018
Where: Science Building, Room 1117, at Noon
“Grand gestures and love notes: Animal communication in a changing world"
When faced with environmental change, organisms can persist and flourish through rapid evolutionary responses, phenotypic plasticity, or a combination of the two. Recent work, however, suggests that more often than not animal responses to human-induced change are maladaptive or insufficient. My lab is particularly interested in understanding how changing environments alter animal communication and reproduction. In this talk, I will summarize two recent bodies of work in which we 1) probed the effects of anthropogenic noise on acoustically communicating insects, and 2) investigated the potential for parental effects to facilitate successful reproduction in changing environments. Traffic noise overlaps spectrally with (i.e. masks) the sounds used by animals to locate and secure mates. We found that developmental experience with traffic noise hindered adult mate location in the cricket Teleogryllus oceanicus, rather than preparing crickets for reproduction in noisy environments. Impaired mate location ability can thus be added to a growing list of fitness costs associated with anthropogenic noise. In our parental effects work, we demonstrated for the first time that stress-induced maternal and paternal effects independently alter daughters' mating behavior in the threespine stickleback. Maternal and paternal predator exposure shifted daughters' preferences to favor less conspicuous mates with dull coloration who courted less vigorously. Stress-induced parental effects on mating behavior may potentiate rapid transgenerational and long-lasting population responses to novel and changing mating environments.
Everyone is welcome to the seminar. If you would like to meet with the speaker, please email Dr. Greg Ragland at firstname.lastname@example.org.
Dr. Amanda Charlesworth, Associate Professor in the Department of Integrative Biology, received an R15 award from National Institute of Child Health and Human Development, National Institutes of Health for 3 years to study “Maternal control of zygotic genome activation by the RNA-binding proteins, Zar1 and Zar2”.
After fertilization, the embryo does not use its own DNA, instead the embryo uses temporary genetic material that was donated to the egg by the mother. Dr. Charlesworth, along with graduate and undergraduate students, will investigate how that temporary genetic material is used to switch on the embryo’s own DNA using frog eggs and embryos as a model system.
Jared Mastin (BS 2013, MS 2017) has published “Climatic Niche Modeling Reveals Divergence between Cytotypes in Eutrema edwardsii (Brassicaceae)” in the journal Botany. Therein, Mastin and co-authors Leo P Bruederle (Professor Emeritus, Integrative Biology) and Peter Anthamatten (Associate Professor, Geography and Environmental Sciences) provide evidence supporting the hypothesis of niche divergence among tetraploid and hexaploid cytotypes in this species. Niche expansion was also revealed among hexaploids, which are expected to have a broader tolerance of environmental conditions.
Congratulations to Cameron Severn (BS Biology Spring 2017) who will start in the M.S. Biostatistics program at Anschutz Medical Campus this fall.
Congratulations to Kelsey Fuchs (BS Biology Spring 2018) who will start in the M.S. Environmental Health program at Emory University in partnership with the Centers for Disease Control this fall.
Denver Café Scientifique 1 at Blake St. Tavern!
Place, date, time: Blake Street Tavern on Wednesday 29 August 2018 at 6:30 PM.
Our speaker: Carly Howett, PhD, Assistant Director, Department of Space Studies, Southwest Research Institute, Boulder, Colorado.
The Topic: If there is life on icy moons, how will we ever know it's there?
"Are we alone?" is one of the key unanswered questions of humankind. The more we understand the fragility of our own life-supporting world the harder it is to believe life could exist elsewhere; but there is hope. As crazy as it sounds we know that life does find a way; we see life in the harshest of Earth's environments, and so maybe life could be elsewhere too. The liquid water oceans underneath ice surfaces on moons across our solar system might be the answer. These regions have access to heat, liquid water and the complex chemistry all needed for life. So maybe these dark, distant, icy worlds are our best hope for finding life. We will explore these different worlds, along with missions currently selected (or being planned) to explore them.
EVERYONE IS WELCOME. The talk starts at 6:30. Come before 6 PM to leave yourself time to get something to eat. We end around 8 PM.
Blake St. Tavern is at 2301 Blake St., close to Coors Field. Parking in a lot adjacent, or at meters on the street.
We welcome your input, including ideas for speakers and topics. Bring them with you to the next Café, or e-mail them and any questions to Eric Meer
Useful information about Cafe Sci is on our Web site and here's a link to the Howett page.cafescicolorado.org/Howett.htm
Please join us on Monday, Sept. 24th at 12:30 in room SCI 1086 for our next student seminar series event! Our speaker will be :
Dr. John T. Lovell
Genome Sequencing Center, HudsonAlpha Institute for Biotechnology
Comparative genomics to uncover the drivers of environmental stress responses.
Environmental stress is a major driver of ecological community dynamics, adaptive evolution and agricultural productivity. For example, drought alters community composition, underlies local adaptation in nature, and is the single greatest abiotic inhibitor of worldwide crop yields. Here, I discuss the role of gene expression regulatory networks in the evolution of drought responses. I then employ comparative and quantitative genomics to uncover natural genetic variants that have evolved to shape environmental stress responses of plants.
Can't join us in person? You can stream the event on zoom: https://zoom.us/j/882505636
Find additional resources and join the conversation on slack: https://tinyurl.com/yacgw32w
Lunch will be provided!
Want to give a talk?
Idea for a panel discussion?
Know someone we should invite?
Email Scott Yanco: email@example.com