Anguillid eels were once considered to be the classic example of catadromy. However,
alternative life cycles have been reported, including skip** the freshwater phase and …

Rationale Stable isotope ratios (δ13C and δ15N values) provide a unique perspective into
the ecology of animals because the isotope ratio values of consumers reflect the values in …

Human activity has led to increased concentrations of mercury (Hg) in the world's oceans.
Mercury can bioaccumulate and biomagnify in animal tissues via trophic transfer, thus …

Predatory fish species play a key role in aquatic ecosystems by exerting top‐down control
on the food web. Also, their intra‐guild trophic interactions (ie competition) are crucial for the …

The application of stable isotope analysis (SIA) is increasing in elasmobranch trophic
ecology, but inconsistency remains in terms of the tissue pre-treatment methods chosen to …

Background Fish fin is a widely used, non-lethal sample material in studies using stable
isotopes to assess the ecology of fishes. However, fish fin is composed of two distinct tissues …

Despite many similarities and intuitive links between individual dietary specialization and
behavioral inter‐individual variation, these phenomena have been studied in isolation, and …

Research on among individual variation in behavior has increased rapidly in recent years. It
is intuitively appealing that variation in the behavior of individuals has ecological …

Migrations between spawning, growth and refuge habitats are critical for many fish species.
Partially migratory populations of brook charr Salvelinus fontinalis (known as brook trout in …

White muscle has been traditionally used in determining δ 13 C and δ 15 N signatures in
fish but ethics and the current conservation status of many species mean the application of …