BuFly

Show ImageJ application.

Go to File, Open Samples and open image ButFlStk. This is a view of butterfly that was photographed with a ruler. What kind of butterfly is this? Having a ruler in any image makes it possible to calibrate the image.

Use your Magnifying Tool and click between 4 and 5 cm. on the bottom scale. This will enlarge your view. (To go back hold down the Option key and click) Take your Straight Line Tool and click on the 4 cm. side of this scale and draw the line to the 5 cm. Go up to Analyze, and click on Measure. Now go to Analyze, Set Measurements and the only box selected should be perimeter. Click OK and then go to Analyze, Set Scale. (You will probably have a reading of around 50 pixels) Enter 10 for known distance as 10 millimeters = 1 cm. Put mm. in the Unit of Measurement box. Click OK (If you have further questions about this you can go to Open Samples and open the file Cal1)

Now take your Straight Line Tool and click on the left wing of the butterfly. Draw the line all the way to the tip of the right wing. Go up to Analyze, and click on Measure. You should have the length of the "wingspan" showing in the box under ImageJ. (To see if your measurements are correct you can measure the distance between a couple of points on the ruler and see how close you come to what shows on the ruler.) Record your results in the results table.

The image that you have been looking at is the first of two images in a Stack. Use the bar at the bottom of the image and move it to the right. (You can also go back and forth between the two images by using the > and < keys on the keyboard) The right hand wing of the butterfly has been torn. (Digitally, not physically) Determine what length of the right wing is missing and then determine what percentage this is of the total wing. You do not have to recalibrate this image. (The calibration you already did on image 1 extends to all the images in a stack) Put your answers in the Results section.

Reference

The follow are WEB reference sites for information on butterflies.

The Butterflies of North America Showing a map of the United States that allows you to check on an individual state and show the different butterflies that are present.

The butterfly website. Here you can tour our photo gallery, learn how to plant a butterfly garden, take a field trip, find a pen-pal, chat with other butterfly-lovers and so much more!

The Butterfly World If nothing else you will certainly enjoy the cursor butterflies.

Butterfly Farm

The Internet's complete source of information on the natural history and farming of neo-tropical butterflies.

Results

(You can also Go to File, Open Samples and Open the image Results which is a copy of this Results section. While this page cannot be printed out - at this time - it can be saved as a JPEG file to your desktop. You can then open it with any graphics program,type out the answers and then print it out from your program.

You can also enter the results on this image using the Text Tool. To do this first go to Edit, Options, Fonts and select something like Geneva - 12 pt - Bold. Then click on the Results Image in the answer space and draw out the yellow rectangle that appears and start typing. When you are finished go to Edit and Select Draw. What you have typed should now be present

1. What type of butterfly are you working with? (You may want to check the above WEB sites for information)

2. Show how you calculated what % of the right wing was missing.

Table 1:

Wing Span (mm.)	Missing Wing (mm.)	% of Right Wing missing