Why do worms like apples but not oranges?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific conceptsIn a long life I have never encountered a maggot or worm in an orange or banana, but have quite often come across such wildlife in an apple or blackberry. Why are some fruits susceptible to infestation, but others not? Is there any rule?alexandra smithies Continue reading...