While the crew was thinning the pears today, Randy detected something wrong with some of the fruit.  The fruit had something orange and white growing on it.  With further research and inspection it appears to be a rust disease.  Quince rust is a common disease in European and Asian Pears, but without laboratory testing we can not say which rust disease this is. Rust is a fungal disease that can be treated with a fungicide that is labeled for rust disease.

The pictures below show the growth on the fruit, when put under the microscope you can see the rust with aecia.  Aecium (plural for aecia) is the fruiting body of rust fungi and the spores are found in a chain-like or cup-like pattern.

This is the fruit covered in rust and aecia.