Ontogenetic resource utilization and migration reconstruction with δ¹³C values of essential amino acids in the Cynoscion acoupa otolith.

ABSTRACT: With the increasing anthropogenic impacts on fish habitats, it has become more important to understand which primary resources sustain fish populations. This resource utilization can differ between fish life stages, and individuals can migrate between habitats in search of resources. Such lifetime information is difficult to obtain due to the large spatial and temporal scales of fish behavior. The otolith organic matrix has the potential to indicate this resource utilization and migration with δ¹³C values of essential amino acids (EAAs), which are a direct indication of the primary producers. In a proof-of-concept study, we selected the Acoupa weakfish, Cynoscion acoupa, as a model fish species with distinct ontogenetic migration patterns. While it inhabits the Brazilian

SUBMITTER: Vane K 

PROVIDER: S-EPMC6202751 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature