Contrasting intra-individual variation in size-based trophic and habitat shifts for two coastal Arctic fish species.

ABSTRACT: Within and among species variation in trophic and habitat shifts with body size can indicate the potential adaptive capacity of species to ecosystem change. In Arctic coastal ecosystems, which experience dramatic seasonal shifts and are undergoing rapid change, quantifying the trophic flexibility of coastal fishes with different migratory tactics has received limited attention. We examined the relationships among body length and condition (Fulton's K, phase angle from Bioelectrical Impedance Analysis) with trophic and habitat shifts (differences in δ¹⁵N and δ¹³C between blood tissues with different turnover rates) of two abundant and culturally important species, anadromous Arctic char (Salvelinus alpinus, n = 38) and sedentary Greenland cod (Gadus ogac, n = 65) durin

SUBMITTER: Pettitt-Wade H 

PROVIDER: S-EPMC10386975 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature