GOLDFISH RESPIRATION TK Name________________ Materials: 3 beakers aged water hot pot 2 goldfish/group thermometer fingerbowl ice Procedure: ***Study the sketch of the set up below before you proceed further.*** Try for at least a 5oC difference between each container. Let the temperature equilibrate for about 1 minute before you begin readings. You will count the gill movements for 3 one-minute trials to get the average respiration/minute. Before you begin trials, prepare your data chart. 1. Put one fish in an ice bath. Add one or two ice cubes directly to water. Count respiration rate by noting the gill movements during a one-minute time trial. Do three trials for each temperature. 2. Count gill movements in the fish in the beaker at room temperature. 3. Slowly add boiling water to the room temperature beaker with an eye dropper. Watch the temperature carefully! It may take about 100 ml. You want to reach a temperature of between 25oC and 30oC. Be careful! Do not cook your fish! Temperature Ice Bath (____) Trial 1 Trial 2 Trial 3 Average Room Temp(____) Warm Water(____) GOLDFISH RESPIRATION LAB REPORT Your lab is to be neatly written in ink, or typed. It will have the following components: Title Purpose Hypothesis (Written using an if . . . .then . . . . statement) Procedure Data Chart Graph (For this data, a bar graph is most suitable) Analysis: Discuss your results. This means you are to describe what happened and explain why. What do you know about fish--are they warm or cold blooded? Would that have any implication in this laboratory? What is the effect of temperature on the rate of respiration? Would changing the temperature around a small mammal have the same effect? Include this information in your discussion: