Discipline: Biological Sciences
Room: Exhibit Hall A
Chyna Branch - Norfolk State University
Co-Author(s): Kelly Dyer, University of Georgia, Athens, Georgia.
Genes controlling sexual behavior are to control species specific differences in courtship that are involved in reproductive isolation of closely related species. Courtship in Drosophila is characterized by a series of stereotyped behaviors that lead to copulation and more than 30 genes have been identified through mutations that affect one or more of these elements. Drosophila recens is a mushroom feeding organism that can be found in North America. This study evaluated the exposure of the fore tarsi could be imperative in courtship behavior. The fore tarsi act as a sensory modality in mating. The study investigated, during a period o/f eight days using forty flies per day and ten trials for each of the four crosses. The removal of fore tarsi either males or females and set up the following no choice treatments: Cut Female and Cut Male, Cut Female and Uncut Male, Uncut Female and Cut Male, Uncut Female and Uncut Male (Control). D. recens were observed for recordings a total of 3 hours a day. There is an understand the removal of the fore tarsi could have a negative effect on the evolutionary trends in the future.The typical D. recens courtship pattern begins with the male orienting to the female. He then taps her rapidly on the abdomen with his foremost pair of feet. Often at this point, the female moves away, to which the male responds by chasing and tapping her. Either way, the male quickly advances to simultaneously licking the female’s genitals and tapping her abdomen near the genitalia with both of his first set of legs. This research study demonstrated that the Drosophila recens prefers mating with flies that have fore tarsi. The fore tarsi removal has a significantly reduced mating rate in contrast to the control group of typical mating patterns. The examination the role of fore tarsi in courtship is unique to this study. This study introduced a conceptual framework for Drosophila recens and the possible evolutionary trends that can be caused by the ablation of the fore tarsi.
Funder Acknowledgement(s): Funding was indulgently and thankfully provided by the Fungal and Genomics and Computational Biology REU program at the University of Georgia, Athens under NSF Grant # NSF dbi-1426834
Faculty Advisor: Dr. Kelly Dyer, firstname.lastname@example.org
Role: I do enjoy independent research, yet I also value the input from others with more experience. When working with Dr. Dyer, she showed me a numerous of ways to continuously growth the population of Drosophila recens species. While working in Dr. Dyer?s lab I learned how to sex, feed, nurture, mate, perform microscopic dissections and all the in-betweens. In this research there was the removal of fore tarsi off either males or females and set up the following four no choice treatments: Cut Female and Cut Male, Cut Female and Uncut Male, Uncut Female and Cut Male, Uncut Female and Uncut Male (Control) Each day for eight days, I set up 10 trials for each of the four crosses. Pairs were observed for 3 hours each day. I noted whether copulation occurred, and if it did how long the copulation lasted. Conducting this experiment independently has allowed me to understand a research question on a much deeper level. I now know that I have the capabilities to find the truth to the unknown.