Genetic consequences of an artificial introduction of guppies (Poecilia reticulata) in N Trinidad

Verifies the success of a 34-yr-old transplantation of guppies in Trinidad, and documents the spread of the introduced fish. Gene frequencies in the introduced population are in accord with the stochastic effects of a founder event. Gene frequencies downstream of the transplant site suggest that the introduced fish have replaced the native guppy population throughout a substantial stretch of the river. (See also 93L/08506). -from Authors