Recent studies have increasingly demonstrated the widespread existence of spatio-
temporal variations in the abundance and distribution of species of freshwater fishes …

Many ecosystems have been dramatically affected by non-native species, but not all such
species have strong deleterious effects. American shad, Alosa sapidissima, a fish species …

Most evidence for hybrid swarm formation stemming from anthropogenic habitat disturbance
comes from the breakdown of reproductive isolation between incipient species, or …

Philopatry to spawning grounds combined with well‐known migratory patterns in the flatfish
Pleuronectes platessa (plaice) has led to the hypothesis that regional populations may …

Galaxias maculatus is one of the world's most widely distributed freshwater fish. This species
has a marine‐tolerant juvenile phase, and a geographical range extending through much of …

Alewife, Alosa pseudoharengus, populations occur in two discrete life‐history variants, an
anadromous form and a landlocked (freshwater resident) form. Landlocked populations …

The anadromous American shad Alosa sapidissima (Wilson) ranges from the St. Lawrence
River, Canada, to the St. Johns River, Florida. Once the major commercially fished species …

Population connectivity is a critical component in the life history dynamics of anadromous
fishes and in the persistence of local populations. We used geochemical signatures in the …

Abstract Switches from migratory (diadromous) to nonmigratory (freshwater) life histories are
known to have occurred repeatedly in some aquatic taxa. However, the significance of the …

We present a simulation model in which individual adult migrant American shad (Alosa
sapidissima) ascend the Connecticut River and spawn, and survivors return to the marine …