BIOG1303 EVALUATION RUBRIC FOR POSTERS Bullets use of rubrics clearly articulate expectations to students Used in both peer review and instructor reviews Examples include use of proper scientific nomenclature statement of hypothesis(es) and prediction(s) proper citations to methods, figures, statistical procedures, and sources details results of analysis/testing and indicates significance level interprets/evaluates reported results with respect to hypothesis
BIOG1303 EVALUATION RUBRIC FOR POSTERS • Bullets use of rubrics clearly articulate expectations to students • Used in both peer review and instructor reviews • Examples include: – use of proper scientific nomenclature – statement of hypothesis(es) and prediction(s) – proper citations to methods, figures, statistical procedures, and sources – details results of analysis/testing and indicates significance level – interprets/evaluates reported results with respect to hypothesis
STUDENTS CONDUCT PEER REVIEW OF FELLOW STUDENTS POSTERS 1108
STUDENTS CONDUCT PEER REVIEW OF FELLOW STUDENTS’ POSTERS
TAS SELECT BEST POSTER thed dt Moistue levels on the Habitat Preference of porcelli
TAS SELECT BEST POSTER
Locomotive response of Sarcophaga sp larvae to salinity Amber garcia. Emma Koh. Purna shah INTRODUCTION RESULTS Animals orient themselves in response to stimuli using a vanety of DISCUSSION All of the subjects responded to the stimulus by The results do not indicate a statistically significant difference in distance leither taxic or kinetic. A movement that involves linear orientation with respect to some stimulus source is known as taxis, whereas of both Larvae in the NaCl group moved in a straight in Sarcona Lar Bat, group and the control group. This does not support movement that ivolves a change in movement speed or tuming rate Line more often than larvae in the control group(lable The discrepancy between expected and observed results may have been due without reference to any stimulus source is known as kinesis(Glase, Zimmerman, Waldvogel, Ecklund, 2008) +/-0.74)than the larve in the control group ( 1. 87+. the presence of saline solution is adaptive. Sarcophaga larvae are generally The larvae of Sarcophaga sp. survive on excrement and the rotting 0.54)(Table 2), but this difference was not significant flesh of insects and mammals. The larvae lack the sensory organs of (Rank Sum Test. alpha-0.05) bom from eggs already deposited in animal flesh, so it may not be advanta he adult flesh fly and must be self-sufficient in responding to environ- cous for the larvae to rconent themselves if their surroundings are already mental conditions hence, a locomotive response would be evolution- salme. If this were tr, no adaptive pressure would exist for the larvae to de- ence of salt. This is the case for a anly adaptive n Sarcophaga sp. Prior research indicates that the larvae exhibit such a response, Joplin& Moore(2002) found that Sarcopha △D243 wide vanety of aquatic nsects that seek out saline ponds and lakes as a habi- larvae develop circadian locomotion patterms in reaction to environ- tat for hfe and reproduction(Ward 2002) mental heat stress. The larvae are also known to reorient themselves by On the other hand, the results trend towards greater distances traveled by phototaxis using a single anterior photoreceptor (Michael Zumpe the larvae in the presence of saline solution. It is possible that the data would indicate a statistically significant diflerence n distance traveled between 曲四m197)h combination of phototaxis and thigmotaxis, which is a taxie respo oups if more replicates were taken, which would be a reasonable result those used mfed checkpoints for tale of movement for Zone I and to locate the excrement or flesh that they feed on anisms, including thigmotaxis and phototaxis There are a variety of potential extemal stimuli to prompt the loco Directional A source of error may have been the accidental inclusion of pupae as sub- Saci Water liects. Pupal Sarcophaga sp could exhibit a different locomotive response olive mechanisms of the flesh fly larvae. A novel possibility would Me Trials be sensitivity to saline solution. perhaps allowing the larvae lo orient from the larvae. Additionally the results would be more detinite with a themselves in a locomotive response to the of salt solution Moved in a 7 0 greater number of replicates and a more accurate method of determining the (indicating blood, and potentially a nearby carcass). The purpose of straight line e of movement, such as the treatment of the larvae with neutral dyes n this experiment is to lest that possibility. It is expected that the larvae order to quantitatively determine the path length from the resulting trail will travel farther in response to the presence of salt solution than the Moved in The results suggest that larvae in the Nacl group may have changed their turming rate and traveled in a circle more often than the larvae in the control presence of water. oved in up. This trend suggests that the larvae exhibit a kinetic response to the esence of saline soluton, A possibility for further investigation would be to METHODS accurately measure the average turming angle of the Sarcophaga sp larvae in For eight replicates, sixteen pupet towel circles(radius-7 5 straight lines a saline gradient to determine if this is the case em)were prepared and two smaller concentric circles (radii=2, and circles 45 cm) were drawn inside them, producing three"zones"from Jablel: The directional movement of subjects in response to the muddle in a bulls eye fashion( Figures 1) environment animal For each replication, one paper towel was wet with 2 mL of dis. REFERENCES tilled water as a control and the other was wet with 2 mL of 9% Glase, IZimmerman, M Waldvogel J. Ecklund, P(200%) Animal Orienta Nacl solution Using soft forceps, one Sarcophaga sp larva was on Behavior. In: K. Chen L. L ester(Eds Investigative Bology: A Labota placed onto the center of each paper towel circle and the"zone tory Text(pp 35-48). Ithaca. NY: Cornell University they reached within one minute was recorded. Larvae and paper Joplin, K.& Moore, D (2002). Efects of environmental fuctors en circadian ac- towels were replaced each replication. This procedure was camed tivity in the flesh fly Sarcophaga crassipalpis Physiological Entomology. 24: 64 out eight times with both solutions The experiment was camed out under a dark fume hood to chret. M (1997). Orentation and Commnunication in Arthropods. Boston, MA: eliminate larval phototaxis, and conducted nt 76 degrees Fahren- Michael, R, Zumpe, D (2001) Notes on the Elements of Behavioral heit and 10% ambient humidity Data were statistically compared Science. New York. NY: Springer US using the Mann- Whitney Rank Sum Test at an alpha level of 0.05 Ward, J(1992). Aquatic Insect Ecology. New York, NY: Wiley Inter- science none reached within ed weeds in each ue al+arI atandard J