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Himantura Leopard Lab

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The experiment was done by observing the Himantura leopard and Dasyatis Americana interactions with a school of fishinside a 760,000 gallon tank at the Adventure Aquarium for 90 minutes.There were two Himantura leopard organisms and approximately five to six DasyatisAmericana.A school of fish was observed as three fishes that are approximately three inches away from each other. When either species of stingray came within five inches of the described school of fish, it was marked down if any of the fishes in the school separated from the school by swimming in an opposing direction of the other fishes of the school. If a fish separated from the school, it was marked down as “break apart” for the specie of stingray that caused the separation. …show more content…

By choosing theDasyatisAmericana as control specie, the experiment was able to control for factors such as size and the specie type. The results are intended to give insight into if color patterns act as a warning sign to the prey that the predator stingray is poisonous. Inside the aquarium, the Himantura leopardis not poisonous as a measure of protection to the other species in the fish tank.As the observer, I had no manipulation of the fish tank. There were variations that occurred during the experiment that could not be controlled as during the beginning of the observation, feeding was

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The process was replicated by thirty groups and the following process was kept constant by each group. Thirty daphnia of various sizes were measured through the aid of a light microscope and micrometer scale. These daphnia were then placed into a tank containing a single bluegill fish, which had been kept unfed for a constant amount of times. When the bluegill fish had eaten ten of the thirty daphnia placed in the tank, it was immediately removed from the tank and placed in a beaker containing a narcotic based anesthetic poison. Following the death of the fish, as indicated by the complete halting of its movement the fish, the fish was dissected in order to remove the eaten daphnia and once again measure them using a light microscope.

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Abstract: The main focus of this lab is on animal behaviors in terrestial isopods, also known as pillbugs. There are many purposes to this lab experiment. First, these pillbugs are put into four different types of enviroments, also known as chambers, light v. dark, hot vs. cold, moisture vs. dry, and lastly shelter vs. open. In these different chambers, there are 10 pillbugs, 5 placed into each individual chamber and then observed for up to 5 – 10 minutes. In this lab we observed that pillbugs prefer light areas, hot temperatures, moist environments, and lastly sheltered spaces.

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Corotto, F., Ceballos, D., Lee, A., & Vinson, L. (2010). Making the Most of the Daphnia Heart Rate Lab: Optimizing the Use of Ethanol, Nicotine & Caffeine. The American Biology Teacher , 176-179. The purpose of this article was to test the effects of chemicals on Daphnia magna.

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