Measuring the Heart Rate of Daphnia

Measurement of Reach's Heart Rate Water Otters are the name of a group of small aquatic crustaceans commonly called "fruit flies". Because their exoskeleton is clear, you can observe the heart of Hill without cutting them. This also makes it easy to check Hill's heart rate change. Suppose you predict that the otter's heart rate will be 190 to 200 times per minute. But this also depends on room temperature. Because Hill is a cold-blooded animal whose temperature is not regulated, the body temperature is the same as the floating water.

Below we explain in detail the possible reasons for evaluating this anomaly. • The most obvious reason is the method used to measure Hill's heart rate. Particularly when using stimulants such as caffeine, it is very difficult to use a ticker timer or paper overlay because Hill's heart rate can be very high. This is due to the limit of human reaction, and in some cases it is not fast enough. One possible solution is to use the camera to take puddles under the microscope for a while. After that, you can play the movie with slow motion and measure the heart rate of otter more accurately.

Otters are a group of aquatic crustaceans commonly called hills. During this experiment the heart rate of 3 hills was observed at 3 different water temperatures. I found that the cooler the water the slower the heart rate. Regardless of the three different hills used, the average heart rate is nearly the same. Another question that we think when experimenting is that other environmental factors may raise Hill's heart rate? Before starting the experiment, I knew that the usual environment of Hill is an aquatic life. So, what affects their heart rate in the aquatic environment? If the environment is more acidic or less acidic, or if other species in the environment increase heart rate, will their heart rate increase? Many things can affect the otter's heart rate in the aquatic environment.

In this laboratory, three different hills were placed in water at 18, 20, 20 ° C and their heart rate was observed under a microscope. With 22 degrees of water, Hill's heart rate is expected to be higher than 18 degrees water. The null hypothesis shows that Hill's heart rate is the same for 22 degrees water and 18 degrees water. To begin the experiment, we took a 20 degree Celsius water sample as our control. Once the temperature was raised to 20 ° C, the first hill and water sample was collected in a pipette at 20 ° C, then the first hill and water was placed on a microscope slide. . From there, we performed three heart rate tests at 20 degrees Celsius for 1 minute for each test.