: Chrysemys picta from islands and the mainland of the northeastern United States show great intrapopulation variation in characters distinguishing C. p. picta from C. p. marginata. There are no significant differences between island and mainland samples. The extent of variation in Chrysemys populations in the northeastern United States precludes meaningful delimitation of restricted areas of intergradation. These turtles probably represent a hybrid swarm.
Department, Program, or Center
Thomas H. Gosnell School of Life Sciences (COS)
Copeia 1968N3 (1968) 612-618
RIT – Main Campus