Page 84 - Fish and Amphibians (Britannica Illustrated Science Library)
P. 84

People, Fish,                                                                                                             SALMON FISHING                                MYTH AND LEGEND  82-83         ENDANGERED SPECIES  88-89
                                                                                                                                    The salmon industry has
                                                                                                                                    become a true economic and                    LARGE-SCALE CATCH   84-85      DRAMATIC DECLINE   90-91
                                                                                                                                    social phenomenon.
          and Amphibians                                                                                                                                                          LURE, FLIES, AND BAIT  86-87








































































                     he future of many fish and                   cultivated by humans. In other areas acid                    amphibians (more than 5,000 species of                  culprit, it is possible that a little-known
                     amphibians is uncertain                      rain is affecting the wildlife of lakes,                     frogs, toads, salamanders, and                          aggressor—a recently identified illness
                     because some species face                    rivers, and oceans. Fish in particular are                   caecilians), one third of all species are               caused by a chytrid fungus—could be
                     fishing nets, loss of habitat, and           very sensitive to chemical substances in                     endangered. Even though experts                         the quickest killer of all. Many similar
        T the invasion of species                                 the water. As for the world population of                    identify loss of habitat as the main                    facts and figures are quite surprising.
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