ipl-logo

Examples Of Daphnia Lab Report

1869 Words8 Pages

Using Daphnia to Detect Water Safety

Due Date: Monday, the 31th of October, 2017

INTRODUCTION

Question: Can Daphnia be used to detect water pollution? How does the water type (source) affect the number of Daphnia and the accuracy and efficiency of testing water safety?

Purpose: The purpose of this project is to test different water sources for safety using the Daphnia species. This is important to the local people of Santa Barbara because it can be used to test whether the water & soil sources are safe from harmful pollution. Soil from various places in Santa Barbara will be collected and water from that soil, “run off”, will be tested against the Daphnia to see if it is toxic to them. Thus this experiment will find areas of soil in our …show more content…

When conditions become strenuous or stressful for the Daphnia to survive, death can begin to occur. Daphnia are ideal for this experiment because of their sensitivity to water quality. Units: Deaths per Water Type *Note - I will not be using this type of experimentation as is causes purposeful harm to the Daphnia, which kills more than they reproduce. This method was mainly an unproven theory that is included for informational purposes.

Water Toxicity Testing Method #2

To determine the safety, or toxicity of the water that the Daphnia are in, I have researched and found out how to find out whether the Daphnia are stressed, or if the water is bad for them. When the Daphnia get stressed due to a predator, they often die in great numbers. To prevent this from happening, I will get strained samples of the water that I am testing in order to eliminate the possibility of a larger predator that might cause false results. When the Daphnia cannot survive in the water conditions (contaminated) then the all of the Daphnia, which are female, will start producing males. Then the Daphnia after producing males, after 120 hours will start trying to reproduce sexually with the males instead of producing asexually in …show more content…

To measure the toxicity of water this way, one may use count the number of heartbeats per minute so that one can have a base reference to compare to. Once that is found, then one can take water that is from an outside source (ex: a school drinking fountain) and then move 20 of the Daphnia to that container. Then, one must wait 120 hours to see of the Daphnia heart beat aids lessened, and by how much. After that, the heartbeats found per minute can be divided into heartbeats per second and the two heartbeats from drinkable water to an unknown water source will be

Show More
Related
443 Words | 2 Pages

Data analysis and t-test statistics have supported the hypothesis that Daphnia heart rate would increase when exposed to tobacco extract. Furthermore, tobacco exposure had negatively affected the overall health of the Daphnia specimen. Its heart rate became unusually low, and even after the release to its culture it appeared to be motionless, and possibly died as a result of the experiment. Unfortunately, the concentration of the tobacco extract was unknown, and had it been lower, the effects could have been different. Nonetheless, the experiment was successful due to the supported hypothesis.

Read More
247 Words | 1 Pages

The hypothesis for this experiment is that if daphnia are exposed to ethanol, aspirin,

Read More
369 Words | 2 Pages

Villegas-Navaro, A., Rosas-L, E., & Reyes L., J. (2003). The heart of Daphnia magna: effects of four cardioactive drugs. Comparative Biochemistry and Physiology Part C: Toxicology and Pharmocology , 127-134. The purpose of this article was to test four cardioactive drugs (ouabain, verapamil, metaproterenol and metoprolol) to see what effects they have on the heart rate of Daphnia magna.

Read More
255 Words | 2 Pages

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.

Read More
1455 Words | 6 Pages

Dissolved Oxygen is another thing we tested for, that 's how much oxygen gets mixed within the water ( Ex. rapids - the white part of the rapids is the oxygen mixing with the water- .) We also tested how fast the water was moving or the ( speed/velocity. ) We were going to test it by using a bamboo pole with a string ( with a certain length ) and a bobber on the end and see how long it takes for the bobber ( from its full length ) to hit the bamboo pole. To find the actual speed of the water you take the length of the string divided by the time ( sec/centi

Read More
299 Words | 2 Pages

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.

Read More
278 Words | 2 Pages

Two weeks ago, we did an experiment that involved using goldfish, for this experiment we tested the goldfishes’ ion-osmoregulation by placing them in a salt water. Each goldfish was place in different salinity, therefore; each goldfish gave a different response. The goldfish that were placed in higher salinity, which was about 35‰ (parts per thousand) died quickly and their weight drop tremendously. This response occurred because freshwater fish does not have the ability to survive in saltwater, therefore; their body cannot tolerate the significant change in salinity. Has previously stated in the direction, the original lab experiment was supposed to test sheepshead minnows fish instead of goldfish.

Read More
918 Words | 4 Pages

Drinking contaminated water can cause different types of cancers and also infertility and birth defects due to of the presence hazardous chemicals. Impoundments that have not been built or properly closed off have led to the death of many animals and also health issues in

Read More
437 Words | 2 Pages

All organisms need oxygen to survive and when their is not enough oxygen, it leaves plants and animals to die. The area of water where there is a low count of oxygen are often called a dead zones. Also, an increase of the pH level in the water can be created because of algae blooms. The toxic killing algae can make humans sick. For the aquatic animals, these toxins attack mainly the organisms liver and nervous system (Nitrogen and

Read More
188 Words | 1 Pages

The poisons such as DDT have the greatest affect on organisms at the top of food chains . for example , the white tailed eagle would have a greater concentration of DDT in its body than fish it feeds on . Top of the food chain large concentrations of DDT may kill organisms , decline its immune system , cause deformities , or damage its ability to reproduce . DDT can also weaken the shells of bird eggs. When eggs break too soon , bird embryos die .

Read More
944 Words | 4 Pages

Nutrient pollution coming from agricultural runoff and other fertilizers allows for the growth of species that upset the balance of the ecosystem such as Cattail, harmful algae bloom, and duckweed. The sulfur in the agricultural fertilizers leads to accumulation of toxic mercury in fish, birds, and mammals. Also, exotic animals or invasive species displaced native and threatens to disrupt the ecosystem balance. The purpose of this experiment is to determine how the water quality affects the Everglades ecosystem and how water pollution impacts different species. Urbanization is a big threat that contributes to poor water quality in water pollution.

Read More
764 Words | 4 Pages

Being able to raise and observe different species of marine life in a tank is good to protect a variety of marine species. One can observe how they act toward each other and many other interesting behaviors. This paper will be describing three topics, Beginning with Saltwater fish, The Arc - eye Hawkfish (parachirrhites arcatus) and Filefish. Eye Hawkfish and Filefish are two types of marine fish. There are certain things to consider when keeping fish in salt water tanks, to understand and start with the basics, here is what needs to be done first to have a saltwater aquarium.

Read More
1472 Words | 6 Pages

Tenebrosa, factors caused by living things, known as biotic factors, also play a role in the distribution of P.Maculata. The first important biotic factor key in a P.maculata’s life is predators. As mentioned prior this organism is unable to move quickly in the water and like all organisms in the ocean is hunted as a means of food. As it cannot ‘outrun’ predators the organism, to deter predators, releases a unique toxin identified as tetrodotoxin. This toxin is extremely harmful and successfully enhances the survival of P.Maculata.

Read More
1212 Words | 5 Pages

Aquaculture in India Aquaculture is the cultivation of the natural produce of water (such as fish or shellfish, algae and other aquatic plants). Mari culture is specifically marine aquaculture, and thus is a subset of aquaculture. Some examples of aquaculture include raising catfish and tilapia in freshwater ponds, growing cultured pearls, and farming salmon in net-pens set out in a bay. Fish farming is a common kind of aquaculture. India offers a huge potential for aquaculture development.

Read More
960 Words | 4 Pages

Millions of people have faced with living-and-death issue due to constant use of contaminated water. Polluted water source causes the deleterious impact on the community. The common consequence is the rising rate of people at higher risk of acute and chronic diseases relating to water pollution such as dermatitis, digestive diseases, diarrhea, and cancer has risen. In several regions, patients diagnosed with cancer, gynecologic infections account for 40-50% of cases, due to polluted water sources. Polluted water and poor sanitation claim the lives of about 9,000 people per year in Vietnam, according to the Ministry of Health and the Ministry of Agriculture and Rural Development.

Read More

More about Examples Of Daphnia Lab Report

Related Topics

Open Document