Geographical Variation in Carbon and Nitrogen Stable Isotope Ratios and Feeding Habits of Japanese Jack Mackerel (Trachurus japonicus)

• Published in: Fisheries oceanography Vol. 34; no. 3
• Main Authors: Enomoto, Megumi, Ohshimo, Seiji, Ito, Shin‐ichi
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 01.05.2025
• Subjects: anchovies; Aquatic crustaceans; Bayesian mixed model; Carbon; Carbon 13; Copepoda; diet; East China Sea; Feeding behavior; feeding habit; Feeding habits; Fish; Foraging habitats; Fork length; geographical variation; Geographical variations; habitat segmentation; Habitats; Habits; Isotope ratios; Japanese jack mackerel; Larvae; Mackerel; Marine fishes; Migrations; MixSIAR; Nitrogen; oceanography; Ontogeny; predator-prey relationships; Prey; Prey selection; prey species; Ratios; Sea of Japan; SIBER; species; stable isotope ratio; Stable isotopes; Straits; Trachurus japonicus; Sea of Japan; East China Sea

ABSTRACT Japanese jack mackerel (Trachurus japonicus) is subject to substantial and escalating commercial harvesting activities, yet its habitat structure is poorly understood. We analyzed the carbon and nitrogen stable isotope ratios (δ13C and δ15N) of this species to evaluate geographical fluctuat...