|MadSci Network: General Biology|
I couldn’t really find a specific answer for the speed of Dwarf African frogs (Hymenochirus boettgeri), but if you have a frog, there are some established scientific procedures to measure its swimming speed. You’ll need: A 40” x 4”x 3” (length x width x depth) A ruler A chronometer A fine wire A Dwarf African Frog A notepad and a pen Mark lines crosswise at the bottom of the trough so that you can see them clearly through water. Space the lines at 5”intervals Fill the trough with water up to approximately 2” Allow the water to sit overnight so that the chlorine in it evaporates and also so that it will equilibrate it to room temperature. Carefully place the frog in the trough and wait until it is settled and calm. Gently poke it with the fine wire so that is swims across the trough LENGTHWISE. Be careful not to hurt it, and don’t let it jump out of the water. Start the chronometer when its head crosses one marking and stop it when the head crosses the marking 10” away from that one (after it crosses two more markings). Write down the value of the chronometer. The time in the chronometer would be its speed to cross 10”. You’ll need to repeat this various times so that you can get an accurate idea of its average speed. You will need to average out the values you have. So, say you measure its speed 10 times, sum up all the ten time values that you have, and divide them by ten. That is your average time for 10”. However, if you need to know its speed PER SECOND, what you’ll have to do is to divide 10 by your average value. For example, lets say that your average 10” swimming speed is 4 seconds: Average time = 4 seconds Distance = 10” Average speed PER SECOND= 10”/ 4 = 2.5”/ 1 second or 2.5 inches per second. The more measurements you make, the more accurate will your average speed be. Just be careful to not tire out the frog. You might want to take measurements at different days to even out any daily discrepancies there might be. If you want to know the FASTEST speed a dwarf frog can swim, just take the lowest time value that you have from all your measurements. Again, the more measurements you make, the more accurate that value. This is how we scientists formulate our experiments to answer questions that have no known answer. After you have done this little set of experiments, you will actually know something that we all don’t. I suggest that you share your knowledge with other African Dwarf frogs owners on the Dwarf Frog website (http://dwarf- frog.education.webjump.com/). Make sure you describe how you did the measurements. Good luck and I hope this was helpful
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