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Figure 1. Tunneling of apple fruit caused by larvae of the codling moth. Codling moth is the most important insect pest of apple and pears in North America. Damage is done by the larvae, which are cream-colored caterpillars that tunnel fruit and produce âwormyâ apples (Figure 1).
Blackleg is an acute, febrile, highly fatal disease of cattle and sheep caused by Clostridium chauvoei and characterized by emphysematous swelling, commonly affecting heavy muscles (clostridial myositis).nterestingly, in sheep, the disease is almost always the result of a wound infection and often follows some form of injury such as shearing cuts, docking, crutching, or castration. The case fatality rate approaches 100%. In New Zealand, blackleg is seen more frequently in sheep.