Lifetime-scale ontogenetic movement and diets of red grouper inferred using a combination of instantaneous and archival methods

Natal Origin Differentiation Using Eye Lens Stable Isotope Analysis

“…Further, eye lenses reflect the isotopic values of new feed within 16 d of a diet change (Granneman 2018), demonstrating their ability to capture the isotopic values of consumed prey. Applications of eye lens SIA are expanding rapidly, and thus far they have included research such as determining early life movement and diets of fish in the Gulf of Mexico (Vecchio et al 2021;Vecchio and Peebles 2022), tracking lifetime resource use of invasive fish species (Curtis et al 2020), and tracking ontogenetic changes in trophic position in squid and imperiled fish species (Liu et al 2020;Young et al 2022). Recent work has also demonstrated the utility of eye lens SIA for differentiating hatchery-, floodplain-, and river-reared Chinook Salmon Oncorhynchus tshawytscha using field-based diet experiments (Bell-Tilcock et al 2021).…”

“…Applications of eye lens SIA are expanding rapidly, and thus far they have included research such as determining early life movement and diets of fish in the Gulf of Mexico (Vecchio et al. 2021; Vecchio and Peebles 2022), tracking lifetime resource use of invasive fish species (Curtis et al. 2020), and tracking ontogenetic changes in trophic position in squid and imperiled fish species (Liu et al.…”