Ontogenetic shifts in diet and trophic position of walleye pollock, Theragra chalcogramma, in the western East Sea (Japan Sea) revealed by stable isotope and stomach content analyses

Park, Hyun Je; Park, Tae Hee; Lee, Chung Il; Kang, Chang‐Keun

doi:10.1016/j.fishres.2018.03.006

Cited by 24 publications

(8 citation statements)

References 48 publications

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“…The SI ratios δ 15 N and δ 13 C are influenced by diet and are useful for identifying broad sources of primary production and differentiating benthic and pelagic trophic pathways (Park et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Understanding marine food web dynamics using fatty acid signatures and stable isotope ratios: Improving contaminant impacts assessments across trophic levels

Madgett

Yates

Webster

et al. 2019

Estuarine, Coastal and Shelf Science

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Section: Introductionmentioning

confidence: 99%

Understanding marine food web dynamics using fatty acid signatures and stable isotope ratios: Improving contaminant impacts assessments across trophic levels

Madgett

Yates

Webster

et al. 2019

Estuarine, Coastal and Shelf Science

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“…For example, stable isotope analysis revealed a positive relationship between isotope ratios and body size of D. gigas, which reflect the changes in the diet of the species (Trasviña-Carrillo et al, 2018). Also, based on stable isotope and stomach content analyses, the walleye pollock (Theragra chalcogramma) (Pallas, 1814) was found to exhibit a dietary shift with growth from consuming mesozooplankton to cephalopods and shrimps as grew (Park et al, 2018). This may be explained by the improvement in predation capacity and a change in the relative abundance of prey.…”

Section: The Characteristics Of Isotopic Changes With Ontogenymentioning

confidence: 99%

Stable Isotope Analysis Revealed Ontogenetic Changes in Trophic Ecology and Migration Patterns of Sepia esculenta in the Northern Coastal Waters of China

2022

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Golden cuttlefish (Sepia esculenta), the most economically important cephalopod in the northern coastal seas of China, had experienced greatly reduced population biomass due to continuous fishing pressure in recent decades. Understanding the trophic ecology and clarifying the spatial distribution of wintering ground can help develop management plans for this species. In this study, the ontogenetic changes in the trophic ecology of S. esculenta in the Qingdao coastal water were determined, and the migration patterns were studied using stable isotope analysis. Cluster analysis based on isotopic values divided S. esculenta with different lengths into groups: 11–20, 21–100, and 121–200 mm. A significant difference in the δ13C values between the groups 11–20 mm (−17.10‰) and 21–100 mm (−15.89‰) illustrates an ontogenetic change in the feeding habits. Due to the migratory habits of S. esculenta, the δ13C value of the group 121–200 mm (−16.39‰) was lower than that of the group 21–100 mm. The δ15N values of S. esculenta were found to increase in length, and there was a clear linear relationship between different S. esculenta groups, suggesting that the wintering ground may locate in the same latitude as the spawning ground (i.e., the middle Yellow Sea). Furthermore, the trophic relationship between S. esculenta and coexisting species was assessed, revealing that the group 11–20 mm of S. esculenta has some overlap of carbon isotope space with other species, suggesting that these species may feed on it as prey. Thus, slightly increasing the length to more than 20 mm may reduce the pressure of being the prey of post-release juveniles of S. esculenta and improve the effect of release.

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“…In extensive farming, fish growth is limited by the availability of the natural food supply, and fasting has been reported to affect the isotopic composition of different species. In fact, the amount of food consumed, as well as its dietary composition, are known to affect the trophic shifts of C and N in fish [61,[68][69][70]. The δ 13 C values of the sea bass from the E3 farm, an extensive system with diet supplementation, placed them inside the "Intensive population" (Figure 1).…”

Section: Discrimination Of Farming Systemmentioning

confidence: 99%

The Use of Stable Isotope Ratio Analysis to Trace European Sea Bass (D. labrax) Originating from Different Farming Systems

Tulli

Moreno-Rojas

Messina

et al. 2020

Animals

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This study aimed to determine whether isotopic ratio mass spectrometry (IRMS) can discriminate farmed European sea bass according to different farming systems and geographic origins. Dicentrarchus labrax of commercial size from three different rearing systems (concrete tank inland, sea cages, and extensive methods in valleys or salt works) were collected at the trading period (autumn–winter). For each farming type, different locations spread over Italy were monitored. Once the fish were harvested, the muscle and feed were sampled. For both muscle and feed, δ13C and δ15N were measured by continuous flow elemental analyzer isotope ratio mass spectrometry (CF-EA-IRMS) with the goal of discriminating samples based on the rearing system. Additional δ2H and δ18O measurements of fish samples were performed by continuous flow total combustion elemental analyzer isotope ratio mass spectrometry (CF-TC/EA-IRMS) to track the geographical origin. The measurements of δ13C and δ15N made it possible to discriminate cultured sea bass from different farming systems (extensive vs. intensive) reared at different geographical sites in Italy. Additional information was obtained from δ18O and δ2H, which enabled the geographical areas of origin of the sea bass farmed extensively and intensively (in cages) to be distinguished.

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Ontogenetic shifts in diet and trophic position of walleye pollock, Theragra chalcogramma, in the western East Sea (Japan Sea) revealed by stable isotope and stomach content analyses

Cited by 24 publications

References 48 publications

Understanding marine food web dynamics using fatty acid signatures and stable isotope ratios: Improving contaminant impacts assessments across trophic levels

Understanding marine food web dynamics using fatty acid signatures and stable isotope ratios: Improving contaminant impacts assessments across trophic levels

Stable Isotope Analysis Revealed Ontogenetic Changes in Trophic Ecology and Migration Patterns of Sepia esculenta in the Northern Coastal Waters of China

The Use of Stable Isotope Ratio Analysis to Trace European Sea Bass (D. labrax) Originating from Different Farming Systems

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