Evidence map›Paper›PMID 41107315›Full record

ArticleScientific reports2025

Combined stomach content and stable isotope analyses revealed variations in trophic ecology of pacific cod in the east sea.

Min Gu Kang, Samroz Majeed, Hae Kun Jung, Chung Il Lee, Hyun Je Park, Jong Won Park, Hyun Soo Rho, Won Gi Min, Joo Myun Park

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Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Min Gu KangEast Sea Environment Research Center, Korea Institute of Ocean Science & Technology, Uljin, 36315, Republic of Korea.
Samroz MajeedEast Sea Environment Research Center, Korea Institute of Ocean Science & Technology, Uljin, 36315, Republic of Korea.
Hae Kun JungOcean Climate and Ecology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
Chung Il LeeDepartment of Marine Bioscience, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea.
Hyun Je ParkDepartment of Marine Bioscience, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea.
Jong Won ParkDepartment of Marine Bioscience, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea.
Hyun Soo RhoEast Sea Environment Research Center, Korea Institute of Ocean Science & Technology, Uljin, 36315, Republic of Korea.
Won Gi MinEast Sea Environment Research Center, Korea Institute of Ocean Science & Technology, Uljin, 36315, Republic of Korea.
Joo Myun ParkDepartment of Marine Biology, Kunsan National University, Gunsan, 54150, Republic of Korea. joomyun@kunsan.ac.kr.

Funding

Korea Institute of Marine Science and Technology promotion 20220533Korea Institute of Ocean Science and Technology PEA0305
6 · The paper itself

Abstract

This study investigated changes in the dietary composition and trophic levels of Pacific cod (Gadus macrocephalus) using stomach content and stable isotope analyses. Pacific cod samples were collected seasonally from May 2018 to February 2022 using bottom gill nets at the northern (Ayajin) and southern (Hupo) sites of the East Sea along the Korean coast. The primary dietary components included teleosts, amphipods, carid shrimps, and cephalopods. Gravimetric dietary analysis revealed distinct latitudinal, seasonal, and size-related variations, with teleosts, cephalopods, carid shrimps, and euphausiids serving as the key prey items. During the cold season, teleosts constituted the major dietary components of the large-sized Pacific cod, whereas smaller individuals consumed more carid shrimps, amphipods, and euphausiids. In the warm season, large-sized individuals predominantly consumed cephalopods irrespective of location, whereas smaller individuals favored amphipods and euphausiids at Ayajin and carid shrimps at Hupo. Differences in stable isotope values (δ

Indexed as

DietFeeding BehaviorGadiformesAnimal Nutritional Physiological PhenomenaAnimalsBody SizeCarbon IsotopesFood ChainGastrointestinal ContentsNitrogen IsotopesPacific OceanRepublic of KoreaSeasonsCarbon IsotopesNitrogen IsotopesEast seaPacific codStable isotopeStomach contentTrophic level

Identifiers

PMID41107315
PMCPMC12534371

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