All Subjects
      All Types

        Info

        Grades

        6-12

        Permitted Use

        Stream, Download and Share


        Part of EARTH A New Wild
        5 Favorites
        113 Views

        Overfishing and Parasitic Snails | EARTH A New Wild

        In this interview with a biologist, we learn that the overfishing of Lake Malawi in Africa has resulted in an unexpected effect on the residents of the area. Parasitic snail larvae have been infecting residents with a disease known as bilharzia; the disease was never an issue when the snails were predated by abundant populations of fish, but a decrease in the predator population has resulted in a surge in snail activity. Use this video to teach concepts such as predator/prey relationships, population ecology, and the results of overfishing.

        Contributor:
        Producer:
        Producer:

        You must be logged in to use this feature

        Need an account?
        Register Now