Complex sentence: Shrimp that survive the acute stage enter a transitional stage and show randomly distributed melanized (brownish/black) lesions within of the cuticle of the cepahlothorax and tail region.
Split into simpler sentences: Shrimp that survive the acute stage enter a transitional stage. Shrimp in the transitional phase show randomly distributed melanized (brownish/black) lesions within of the cuticle of the cepahlothorax and tail region.