Daphnia Questions! (please answere)

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XyleReflex
Posts: 3
Joined: Fri Dec 30, 2011 1:29 pm
Occupation: Student
Project Question: I have a couple questions actually, My hypothesis is if caffein is ingested by daphnia there heart-rate will speed up.

Why does caffein trigger in a organisms body that makes Its heart-rate speed up?

What would be the easiest way to record a heart rate of anything?

Does Daphnia get any substances naturally that boosts there heart-rate?

If so what are those substances?

Do you have any advices on doing this experiment?
Project Due Date: January 10, 2011
Project Status: I am conducting my research

Daphnia Questions! (please answere)

Post by XyleReflex »

Question #1: What about daphnia makes it so easy to experiment on for scientist?

Answer #1:

Questions #2: Why are daphnia such a great food source for fish?

Answer #2:

Questions #3: Where are daphnia’s natural habitat?

Answer #3:

Question #4: Why is daphnia magna the most used source of daphnia?

Answer #4:
ivyh
Former Expert
Posts: 52
Joined: Mon Oct 10, 2011 5:36 pm
Occupation: Biotechnology Student
Project Question: n/a
Project Due Date: n/a
Project Status: Not applicable

Re: Daphnia Questions! (please answere)

Post by ivyh »

Hi! Welcome to science buddies. While I will not answer the questions for you, I will give you some links that you might find helpful. On the internet, you can find all kind of information about Daphnia. If you are still having trouble, feel free to post again.

Here are some links related to Daphnia:

http://en.wikipedia.org/wiki/Daphnia
(I would double-check any information taken from wikipedia, since it can be edited by anyone)

http://lhsfoss.org/fossweb/teachers/mat ... phnia.html

http://web.cecs.pdx.edu/~davidr/discus/ ... phnia.html
amyC
Site Admin
Posts: 1130
Joined: Mon Dec 15, 2008 3:38 pm
Occupation: Science Buddies
Project Question: N/A
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Re: Daphnia Questions! (please answere)

Post by amyC »

In addition to doing additional research as recommended by Expert IvyH, there are two Science Buddies Project Ideas that use Daphnia Magna. Both of these contain introductory material that may prove useful to you, as well as bibliographic references for additional study:

Using Daphnia to Monitor Water Toxicity
https://www.sciencebuddies.org/science- ... p043.shtml

Caffeine and Heart Rate: A Pharmacological Study Using Daphnia magna
https://www.sciencebuddies.org/science- ... p048.shtml

Is the second one the one you are using for your project?

Good luck!
Amy
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