| invasion of a rocky intertidal shore by the tunicate pyura praeputialis in the bay of antofagasta, chile. | invasion by marine nonindigenous species (nis) is a spread phenomenon. the tunicate pyura praeputialis shows pronounced disjoint geographical distribution: along thousands of kilometers in wave-swept headlands on the southeastern coast of australia, from where it appears to have originated, and exclusively along 60-70 km inside the bay of antofagasta, chile. mtdna sequences suggested that the species invaded this rocky shore recently. we used field manipulations and juvenile p. praeputialis tran ... | 2004 | 15118086 |