procercoid การใช้

• After ingestion by a suitable freshwater crustacean such as a copepod ( the first intermediate host ), the coracidia develop into procercoid larvae.
• Annelids eat the eggs, where they hatch into oncosphere larvae that move through intestinal wall and become procercoid larvae in the body cavity.
• Following ingestion of the copepod by a suitable second intermediate host, typically a minnow or other small freshwater fish, the procercoid larvae are released from the crustacean and migrate into the fish's flesh where they develop into a plerocercoid larvae ( sparganum ).