CAMPUS ALERT: Due to the weather, all evening classes at CSB and SJU are canceled. The LINK bus will run on its regular schedule until 5 p.m. and then every hour on the hour for the remainder of the evening, weather permitting. Pre-scheduled campus and community events and college/university sponsored events scheduled at off campus locations may continue at the discretion of the divisional VP.

7. Common Milkweed

The "milk" of milkweed is poisonous to most animals. Monarch catepillars are one of the few organisms that can handle the toxins in their bodies. Milkweed

Thus, monarch caterpillars eat the leaves of milkweed, building up the toxin in their body.  When a bird eats a monarch butterfly the butterfly tastes bitter and the bird will avoid eating other monarch butterflies.

The Viceroy butterfly does not eat milkweed and therefore would taste very good to birds.  However, the viceroy has similar color markings as the monarch.  Therefore, birds also avoid eating viceroy butterflies since the birds relate the butterfly coloring to a bitter taste.  This survival technique is known as mimicry.

 

 

 

 Previous                     Next