Dynamics of white perch Morone americana population contingents in the Patuxent River estuary, Maryland, USA

dance. For example during summer, inshore areas of the western Atlantic between Cape Hatteras and Cape Cod support a high abundance of the spotfin butterflyfish Chaetodon ocellatus, which recruits from more southern spawning areas. Although density, growth and survival of spotfin butterflyfish would indicate that these juvenile habitats are highly important, the northern juveniles are incapable of surviving winter conditions or migrating long distances to rejoin the southern part of the population; therefore, they die before they