Is a tapeworm used in agriculture?

Yes, a species of tapeworm called "Spirometra mansonoides" is used as a biological control agent in the agricultural industry to control the population of certain types of insect pests. It is primarily used against rodents and other small mammals that can damage crops and stored food products. The tapeworm's larvae infect these animals and reduce their reproductive ability or even cause their death, thereby reducing the pest population and minimizing crop damage. While it's important to note that biological control methods may have potential ecological implications, Spirometra mansonoides is considered relatively host-specific and poses minimal risks to non-target species.