Hitman47 Posted February 9, 2003 Posted February 9, 2003 I'm doing a frog experiment. I am testing if frog deformation is caused by water pollution. My teacher said to look at Frog breeding cycles to design an experiment. any ideas of how to do this?
fafalone Posted February 9, 2003 Posted February 9, 2003 You need a control group in an environment with no pollution, and a group in a polluted environment.
Hitman47 Posted February 9, 2003 Author Posted February 9, 2003 Would it be legal to do this as a High School student?
fafalone Posted February 9, 2003 Posted February 9, 2003 Might have to get it approved by an ethics board, it's not illegal, but your local policy might require approval.
Hitman47 Posted February 13, 2003 Author Posted February 13, 2003 where can i get background information on the experiment?
Rossonero Posted February 13, 2003 Posted February 13, 2003 in-ter-net.... try emailing a university. however be sure to email the correct science department. im sure that they would be more than happy to help if u say u want to make the world a better place.... blah blah blah and u want to make people aware of pollution damage to frogs through a science experiment at school. sound like a hippy. that may be a problem tho, coz hipee's are dumb.
Sayonara Posted February 13, 2003 Posted February 13, 2003 Originally posted by Rossonero I don't want to get hit with the modding stick, so I recommend using http://www.google.com
fafalone Posted February 13, 2003 Posted February 13, 2003 ... just wanted a monopoly on the active topics list =)
Hitman47 Posted February 17, 2003 Author Posted February 17, 2003 Im thinking in putting a control of frog families. One family in a polluted area and another family in a clean area, but how many frogs should i test. I read that frogs can produce 10,000 eggs. Suggestions? thanks.
Sayonara Posted February 17, 2003 Posted February 17, 2003 10,000 is a very good sample set, but not if they are all second generation from the same parent. Looks like you're going to have a lot of counting to do, even taking infant mortality into account.
Sayonara Posted February 17, 2003 Posted February 17, 2003 If it were me, and I was testing the offspring of frog mating couples in different areas, I'd want to use at least 50 couples and ensure there was no amphibian infidelity in either group. So potentially 1 million offspring to check. hohoho.
Sayonara Posted February 17, 2003 Posted February 17, 2003 You might have 9 freaks in one set but only 3 in the other. Amphibians are loose and easy with their genes.
Sayonara Posted February 18, 2003 Posted February 18, 2003 Originally posted by Hitman47 :slaphead: :scratch: Welcome to the magical fun of experimental design
Hitman47 Posted February 18, 2003 Author Posted February 18, 2003 Well at least the field of science is not in my future plans when i go to college
Hitman47 Posted February 18, 2003 Author Posted February 18, 2003 How can i improve my procedure of the experiment? I want to make it longer? What do i add? Experiment In this experiment, approximately 100 frog couples would be taken. Fifty of them would be put in a polluted area. In this case the polluted area would be the Guadalupe river in San Jose. The fifty other couples would be put in a clean area. In this case, in a clean pond in San Jose. This would be your control group. In the background information of the frog, 10,000 eggs can be produced. This usually takes one or two days. In the meantime observe the couples. After a week, bring back all the frogs being tested and count all the offspring they had produced. Record how many deformed frogs were born. Record the information in the data table.
Hitman47 Posted February 25, 2003 Author Posted February 25, 2003 I need new help. My experiment wasn't accepted, but luckily im still working with frogs Anyways the new experiment: I need to keep frogs in captivity and see if i can revert them and see the changes in their population. Can anyone help me. I know its quiet incomphrensible, but help!!
spuriousmonkey Posted March 17, 2003 Posted March 17, 2003 you could check if frogs in polluted water have less offspring or if there is more mortality in offspring... if you want to revers the effect you breed the frogs in polluted water...let them lay eggs...keep them there for a while until the tadpoles come out...transport half to a clean tank...the other half can remain in polluted water... so you could also just collect tadpoles from a polluted site to make it simpler...keep half in water collected from that site and half in clean water...voila...see who do better and in what way. more mortality? delayed growth? deformations? etc.
YoungStrife Posted March 19, 2003 Posted March 19, 2003 I strongly suggest you take information based on previous studies. Some frog species can lay strands of up to 300,000 frog eggs at a time. I remember when disecting a frog i accidently got the only female...whoopy, and it took m all hour just to remove part of the eggs in her stomach...they took up around 2/3 of her body mass or at least so it seemed. My suggestis that if you do perform the experiment destroy an equal amount of each frogs offspring, lets say 99%, then you'll only have a few dozen thousand to count!
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now