Lab Report on Ventilation and Oxygen Consumption in Fish Essay

Answer = The graph demonstrates that as the dissolved oxygen levels increase the fish population will increase. The fish show strong growth from 6ppm to 12ppm dissolved oxygen. As the levels reach 14ppm to 18ppm the have a repeating effect as 6ppm to 12ppm.. With this being said, it shows that fish will show growth progress to a certain level of dissolved oxygen and then level off.

If you put a goldfish in 10 degree C water, 20 degree C water, and 27 degree C water, then the goldfish’s gills would move more in 10 degree C water. If you put a goldfish in 10 degree C water, 20 degree C water, and 27 degree C water, then there would be no significant difference in the number of times the goldfish’s gills moved. The goldfish would have to change its breathing rates, due to the changes occurring to the external environments.

In this lab we are measuring the amount of oxygen used in both germinating and non germinating peas. We are measuring the oxygen consumption by taking a reading of a respirometer submerged in two water baths. The first bath will be cold water and the second warm to determine the effect of temperatures on oxygen consumption. Our negative control will be glass beads to measure to increase or decrease in atmospheric pressure or temperature changes. There is a direct relationship between oxygen consumption and Carbon Dioxide produced, therefore the more O2 consumed the more CO2 produced. To keep the amount of CO2 produced from canceling out any pressure gained or lost from the consumption of

Competition determines survival of the fittest. The larger plankton eat larger particles, therefore making themselves thrive, and the smaller planktonic herbivores were extinguished from the specific lake ecosystem. When the plankton are being heavily hunted, the smaller thrive. The small plankton tend to succeed in the general plankton population because they are effective when collecting their food, and they have lower metabolic rates, requiring them to eat less. An equation was devised to represent this scenario. “The food collecting surfaces are proportional to the square of some characteristic linear dimension, such as body length, in Crystal Lake, for example, the body length of Daphnia catawba is about four times that of Bosmina longirostris, so that the filtering area of the Daphnia is about 16 times larger than that of the

At the conclusion of the experiment, the two hypotheses were reviewed. Because the water temperature did affect the normal respiration patterns of the goldfish, the null hypothesis was disregarded and the alternative hypothesis was accepted. From the results of this experiment, it was concluded that although other environmental factors could play

2. You have measured the rate at which a fish breaths at various temperatures by counting the rate at which its gills open. The data table is shown below. Create a line graph depicting the results.

13. Which of the following is not an expected response in a fish to a drop in water temperature?

When the dissolved oxygen level drops below 2.0 the trout seem to lose all their coloring. Once they lose their coloring they do not get it back.

Gammarus setosus is a marine amphipod that is found in the intertidal waters of British Columbia. A study of temperature on the rate of movement of Gammarus setosus was undertaken to find whether temperature would positively or negatively affect the activity of Gammarus setosus. Specimens of Gammarus setosus was obtained and tested. 30 ppt salt water of 5°C, 23°C, and 30°C was used to perform the experiment. The specimens were allowed to acclimate for one minute. Then, the distance traveled by the specimens was collected and analyzed. A total of 13-15 replicates were tested per trial. It was found that the specimens were most active in the 20°C trial. The

We performed an experiment on crayfish focusing on their metabolic rates, via oxygen consumption, at two acclimated temperatures. Crayfish were either acclimated to a warm temperature (20 to 25C) or to a

- To test this hypothesis my experimental approach would be testing different bodies of water or testing one and just testing different areas while tracking the fish.

The increase of oxygen does not necessarily mean the fish will keep up with it. Too much oxygen can be harmful to the fish so you would need a certain amount per area of fish. A constant flow of oxygen going throughout the water habitat.

-If there is more dissolved oxygen in the water, there will be more fish present in the area the water sample is taking from.

Group 1 received 107% for 0.0m, 109% for 0.25m, 112% for 0.5m, and 126% for 0.75m. Group 2 received 100% for 0.0m, 107% for 0.25m, 116% for 0.5m, and 117% for 0.75m. Group 3 received 100% for 0.0m, 106% for 0.25m, 114% for 0.5 m, and 117% for 0.75m. Group 4 received 100% for 0.0m, 106% for 0.25m, 113% for 0.5m, and 116% for 0.75m. Group 5 received 98% for 0.0m, 105% for 0.25m, 110% for 0.5m, and 115% for 0.75m. Group 6 received 104% for 0.0m, 108% for 0.25m, 111% for 0.5m, and 104% for 0.75m. The trend line that occurred for the rate of osmosis was an upward increase as the solute concentration increased.

This experiment was used to examine the hypothesis that: Osmosis is dependent on the concentrations of the substances involved.