The Ichthyology students observed Zebrafish larvae exhibiting positive phototaxis, a tendency to move towards the light. In this experiment, half of a glass tank was covered in foil to create dark conditions and students watched as the larvae settled themselves in the lighted portion.
As part of the Goldstein Program in Public Affairs, Dan Holler ‘05 spoke in the Alumni House about getting a job as Communications Director for the Heritage Foundation, a prominent DC think tank. working in professional politics or advocacy. Afterwards, he gave a public lecture on the Republican presidential primaries in Hynson Lounge entitled “Breaking all the Rules: The GOP Primary.”
Students in the Ichthyology class at Washington College, taught by Dr. Martin Connaughton, observed and experimented with male Betta fish and their displays of aggression. Students learned the different signs of aggression (opercle expansion, lateral display, approach, fin spreading, etc.) that a male might exhibit in order to intimidate an opposing male, an object outside the tank, or even its own reflection. After observing their behavior, students developed their own experiments to determine the impact of factors such as fish size, fish color, and opercle size on the fish’s display of aggression.