For this lab investigation, our question was do pillbugs prefer vinegar or plain water in their environment? Our hypothesis was that if they were given the choice, then they would choose the water side because their natural environment is not as acidic as vinegar. After we tested this hypothesis, the data that we collected over the course of 20 minutes supported our theory. At the end of the first minute, there were 3 pillbugs on the vinegar side, and 37 pillbugs on the water side. Then, after 10 minutes, there were 4 pillbugs on the vinegar side, 30 pillbugs on the water side and 6 pillbugs that were missing. After 15 minutes, 4 pillbugs were on the vinegar side, 28 were on the water side and 8 were missing. Finally, at the end of the 20th minute, there were 3 pillbugs on …show more content…
the vinegar side, and 37 pillbugs on the water side. On average, about 4 pillbugs were on the vinegar side, 32 pillbugs were on the water side and 4 that were missing.
There were approximately 8x the amount of pillbugs on the water side compared on the vinegar side. Many sources of error could have occurred during the experiment, however. One possible source of error was that about half of the pillbugs were actually sowbugs, an isopod crustacean that has extremely close relations with the the pillbug. The main difference is that sowbugs do not roll up. This could have been a source of error because the difference in the two species may have attributed to the preferences of the isopods in the experiment. A second possible source of error was uneven lighting on our experiment. We gave our best effort to control the lighting and background as much as possible so that the experiment would not be affected, but there could have been something that was overlooked because a classroom environment is not the easiest thing to control. The last source of error was something that could not have been avoided. As time goes on, the pillbugs could have slowed down their movements compared to when they were first dropped into the bin due to their natural
behaviors. This affects the experiment because as time goes on, they would not move as fast and perhaps just stay in one place like many of them did. Despite these possible sources of error, we were able to learn a lot about the pillbugs. Pillbugs may have preferred the less acidic environment because in their natural habitat, it is damp with water and dark. Vinegar is composed with only a small percentage of water, so it was most likely an unnatural habitat to them. To bring it all together, our group concluded from the data that we collected that the pillbugs preferred the habitat with water over vinegar because it is closer to their natural environment in nature.
To begin the lab, the variable treatment was prepared as the Loggerlite probe, used to later measure oxygen consumption, warmed up for approximately 10 minutes. To prepare the variable treatment, 200ml of Sodium and Ammo-lock water was measured in a container and a pre-prepared “tea bag” of tobacco was steeped in the room temperature treated water until a light yellow color was visible. After preparing the tobacco solution the preparation for the live goldfish began as two beakers were filled with 100 ml of treated water. Each beaker was weighed before addi...
Abstract: The house cricket, Acheta domesticus, was used to test whether food and potential mates drive aggressive behavior. Male crickets were randomly selected in pairs and place into a cage to observe aggressive behaviors in the presence of no food, food, and female. The cage provided a confine area for the crickets to fight one another while the variables of food and female were used in attempts of increasing aggressive interactions between the male crickets. There was no significance found through this experiment due to a lack of data. It was discovered that the experiment would have to be done at a larger scale to be able to see any significance in the two variables.
Introduction: In this lab we are testing if pillbugs will ball up the more they are in danger.
My experiment is testing one of the five senses of my dog, Blaze. I am testing for taste. In this experiment the question I am going to answer is, Which of three flavors of treats will my dog prefer? The treats are made by the same company, Beggin’ Strips from Nestlé Purina PetCare Division, but they are different flavors. The flavors used will be Hickory Smoked Bacon, Bacon & Cheese, and Bacon & Peanut Butter. My hypothesis for this experiment is, Of the three flavors my dog will prefer the Bacon & Cheese flavor the best. I chose this topic for my experiment because I have a major interest in animals and I am hoping to get a degree in some form of veterinarian services, such as zoology.
Madagascar hissing cockroaches (Gromphadorhina portentosa), ectotherms that were easily observable and subjectable to habituation, were used to compare differences in standard metabolic rates between organisms. The hypothesis is that the habituated G. portentosa will have a lower weight specific metabolic rate than the non-habituated G. portentosa. To measure metabolic rates of habituated and non-habituated cockroaches that were either male or female, the cockroaches were put into a flow meter apparatus that calculated the amounts of CO2 they gave off during respiration. The mean weight specific metabolic rate for the habituated males was 2.00 x 10-3 +- 1.08 x 10-3 (ml x CO2)/(g x min) and for the non-habituated males the mean was 2.40
My Hypothesis was that the maggots would change color from eating the food dye injected into the chickens. And if they did change color I predicted that they would visit at least three chickens.
Orne, M. T., & Holland, C. H. 1968 On the ecological validity of laboratory deceptions. Accessed 14/02/2011
Knight, Andrew. "The Costs and Benefits of Animal Experiments." New Internationalist All Posts RSS. N.p., n.d. Web. 25 March 2014.
Howard, Carol. "Alternative Testing Can Replace Animal Experimentation." AV Magazine CXIII (Spring 2005): 14-15. Rpt. in Animal Experimentation. Ed. Cindy Mur. San Diego: Greenhaven Press, 2004. At Issue. Gale Opposing Viewpoints In Context. Web. 25 Apr. 2011.
From these experiment many questions and future studies are brought to the table. Some questions about the experiment may include the reliability of the test suspects. Due to the different lifestyles and conditions of each test subject it could have and affect on the results of the experiment. Also the article states that there could have been a mistake in the values of PD__AMP. A future study similar to this may be hookworm’s effect on other disease like issues in the immune system. It would relate to the past two studies because in both of the previously done studies it tested the hookworm’s effect on issues with the immune system. The future studies could be improved by making the test suspects in the most similar conditions and lifestyles as possible. Also they could use a larger number of test subjects to have more accurate results.
The purpose of this experiment is to show how dichloro-diphenyl-trichloroethane, a synthetic pesticide, moves through the food chain. The special focus of this experiment is how dichloro-diphenyl-trichloroethane (DDT) bioaccumulates and energy moves through the trophic levels of a food chain. To illustrate biomagnification, M&M chocolates were used to exemplify phytoplankton with the opacity of the M mark on the chocolate serving as the amount of DDT within the phytoplankton. For example, an M&M with a perfect M mark on it was said to be a phytoplankton that ingested one hundred percent of the DDT while an M&M with an absent M mark on it was said to be a phytoplankton with zero percent DDT ingestion. Amount of DDT, measured in ppm, and kilocalories
"Why Animal Experimentation Doesn't Work-Reason 1: Stressed Animals Yield Poor Data." Huffington Post 31 07 2013, n. pag. Web. 17 Dec. 2013. .
Anterior: nearer to the front, situated before or at the front of (opposed to posterior)
In this essay I will the experiment that a group of researchers conducted to determine which vaccine is more effective for preventing getting the flu. There were two types tested: a shot and a nasal spray. The numbers are as follows: 1000 participants were selected at random with 500 people getting the shot and 500 the nasal spray. Of the 500 people were treated with the shot, 80 developed the flu and 420 did not. People who were treated with the nasal spray, 120 people developed the flu and 380 did not. Level of significance was set at .05. Proportion of people who were treated with the shot who developed the flu = .16, and the proportion of the people who were treated with the nasal spray was .24. The calculated p value = .0008.
Knight, S. E., Vrij, A., Cherryman, J., & Nunkoosing, K.. (2003). The effect of belief in animal minds and other individual differences on attitudes toward animal use. Russell WMS, Burch RL (1959) Principles of Human Experimental Technique. London, UK: Methuen. Zinsstag J, Schelling E, Roth F, Bonfoh B, De SD, et al.