Discipline: Ecology Environmental and Earth Sciences
Room: Exhibit Hall A
Uchechukwu Agali - Harris-Stowe State University
Co-Author(s): Daniel Sasson, Department of Biology, Saint Louis University, St. Louis MO, Kasey Fowler-Finn, Department of Biology, Saint Louis University, St. Louis MO
Thermal Effects on Male Signals and Female Preferences Across Populations of the Treehopper Enchenopa binotata. This research is important to understand how climate change will affect our environment. For testing, an individual is placed on a testing plant. The individual is tested at one of seven different temperatures (18, 21, 24, 27, 30, 33, 36)°C. The individuals are collected at three sites: Arkansas (ARK), Missouri (MO), and Massachusetts (MA). For males, a primer is played for the individual and their call response is recorded. For females, male calls at 19 different frequencies are played and female responses recorded. Arkansas was grouped by family (offspring from the same mother). Results were males from Arkansas call at a higher frequency than males from Missouri or Massachusetts. This difference is driven by one Arkansas family with higher calls. Females from Arkansas prefer a higher frequency than females from Missouri or Massachusetts. This difference across populations is not driven by just one family as it is in males. Differences across groups in male call frequency/female frequency preference can lead to reproductive isolation and divergence. These results, along with the difference in nymph color, indicates that these Arkansas E. binotata may be in the process of diverging and/or are a hybrid species. Further research would be looking at different populations at different latitudes, and seeing if the Arkansas population is the only population like this. Kilmer, J.T., Fowler‐Finn, K.D., Gray, D.A., Höbel, G., Rebar, D., Reichert, M.S. and Rodríguez, R.L., 2017. Describing mate preference functions and other function‐valued traits. Journal of evolutionary biology, 30(9), pp.1658-1673
Funder Acknowledgement(s): NSF; Saint Louis University
Faculty Advisor: Kasey Fowler-Finn, firstname.lastname@example.org
Role: I conducted the experiment on the Arkansas individuals, and some Boston individuals. I also organized the data into graphs.