Combining otolith elemental signatures with multivariate analytical models to verify the migratory pattern of Japanese Spanish mackerel (Scomberomorus niphonius) in the southern Yellow Sea

Pan, Xindong; Ye, Zhenjiang; Xu, Binduo; Jiang, Tao; Yang, Jian; Jia-hua, Cheng; Tian, Yongjun

doi:10.1007/s13131-020-1606-0

Cited by 14 publications

(6 citation statements)

References 47 publications

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“…The MRT is a recursive clustering method based on multiple factors and can be used to detect hidden discontinuous information in multivariate time series (Vignon, 2015). In addition, the method does not involve the transformation of the distribution assumptions and data formats of predictor variables and response variables, thus avoiding any a priori judgment on expected patterns (Pan et al, 2020; Vignon, 2015). Therefore, the squid life history stage was determined by MRT, in which the response variable and the predictor variable were sample age and cumulative daily increment width, respectively.…”

Section: Methodsmentioning

confidence: 99%

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

Li,

Han,

Chen

et al. 2024

Fisheries Oceanography

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Swordtip squid (Uroteuthis edulis) is characterized by a complex population structure and rapid generation renewal and sensitive to habitat changes. Its population growth response to environmental variations implies its flexible life history traits. In this study, with the samples collected in the north‐central waters of the East China Sea from 2017 to 2021, the daily growth of the spring stock was analyzed based on the age and increment width of statolith. The gradient forest method (GFM) and generalized additive mixed models (GAMMs) were used to explore the changes in the weights of environmental variables and the relationships between daily growth and environmental variables in various growth stages. The age of the samples collected from 2017 to 2021 mainly ranged from 180 to 240 days, and the spring stock was the dominant stock. According to the distance from daily increment to core in the statolith, the life history of the spring stock was divided into four growth stages (S1 embryo–larval stage, S2 juvenile stage, S3 subadult stage, and S4 adult stage). For the spring stock, the cumulative weight of temperature and salinity in the population growth was the largest in S1 stage; the cumulative weight of temperature and velocity was the largest in S2 stage; the cumulative weight of temperature was the largest in S3 stage; and the cumulative weight of mixed layer depth (MLD), temperature, and salinity was the largest in S4 stage. The relationship between temperature at the depth of 25 m (T25) and daily growth of the spring stock was first positively correlated (S1–S2), then negatively correlated (S3), and finally positively correlated (S4). The relationship between environment variable and growth of the spring stock gradually decreased with the increase in MLD (30 to 50 m) and SSS (S3–S4, 32.2‰ to 33.2‰) and gradually increased with the increase in the velocity of currents (S1, .1 to .2 m/s). The differences in the responses of the spring stock to environmental variations in different growth stages may lead to the changes in the growth traits for the spring stock. This study provides a scientific basis for a comprehensive understanding of the life history traits of U. edulis.

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Section: Methodsmentioning

confidence: 99%

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

Li,

Han,

Chen

et al. 2024

Fisheries Oceanography

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“…The validity of the element determination results was evaluated according to the minimum detection limit for each element and the relative deviation (RSD%), which were calculated based on standard samples, and invalid elements were removed [ 31 , 32 ]. Data analyses were performed only for elements detected in all statoliths [ 31 , 31 ].…”

Section: Methodsmentioning

confidence: 99%

Migration Route of Sthenoteuthis oualaniensis in the South China Sea Based on Statolith Trace Element Information

Fan,

Fang,

et al. 2023

Animals

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Sthenoteuthis oualaniensis (Lesson, 1830) is a pelagic species with a complex population structure and wide migration range. The trace elements in statoliths are effective indicators for reconstructing the life history of an individual. In this study, the trace elements in statoliths were determined via laser ablation inductively coupled plasma mass spectrometry, and a multiple regression tree (MRT) model was used to trace the migration of S. oualaniensis and identify its potential habitats in the South China Sea. Na, Mg, Fe, Sr, and Ba were the effective trace elements, with significant differences found among stocks (p < 0.05). The MRT was divided into five clusters representing five life history stages. The Mg:Ca and Sr:Ca ratios decreased initially and increased thereafter, and the Mg:Ca, Sr:Ca, and Ba:Ca ratios differed significantly among the stages of the life history in each stock (p < 0.05). The hatching water temperatures for the winter and summer–autumn spawning populations were 28.05–28.88 °C (temperature at 25 m) and 27.15–27.92 °C (temperature at 25 m). The winter stock hatched in the southern South China Sea, and the larvae then migrated northwest during the summer monsoon. The summer–autumn stocks hatched in the northern South China Sea, and the larvae migrated southward under the mesoscale closed anticyclonic circulation in the northern South China Sea. These results provide insight into the migration of S. oualaniensis in the South China Sea.

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“…Ontogeny in uenced the element pattern of S. niphonius, leading to signi cant difference of elemental concentrations among different life stages (Pan et al, 2020a, b). Given that ENSO is the source of year-toyear variations in global climate and its impacts continued all the year round through winter (Cai et 2019) also found that there was an increase in horse mackerel and anchovy during this period, which were the main prey species S. niphonius feeding on (Sui et al, 2021).…”

Section: Enso Drives Variations In Element Patternmentioning

confidence: 99%

“…Otolith were analysed for the presence of 8 elements ( 7 Li, 24 Mg, 44 Ca, 55 Mn, 56 Fe, 59 Co, 88 Sr, 138 Ba). However, we only focus on Li:Ca, Mg:Ca, Sr:Ca and Ba:Ca in the present study as they were most informative to reveal the migration pattern and population connectivity of S. niphonius (Pan et al, 2020a, b).…”

Section: Otolith Preparation and Elemental Analysismentioning

confidence: 99%

“…Despite this breadth of background, the complex life histories of marine migratory sh make the investigations of their responses to extreme climate events di cult and rare. Otolith biogeochemistry offers a potentially e cient and cost-effective means to evaluate the impacts of ENSO events on population connectivity (Walther 2019; Reis-Santos et al 2022; Pan et al, 2020a). As they continuously accrete, trace and minor metals from the local environment are permanently incorporated into the crystalline matrix of the otolith.…”

Section: Introductionmentioning

confidence: 99%

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Otolith biogeochemistry reveals impact of extreme climate events on population connectivity of a highly migratory fish

Pan

Chen

Yang

et al. 2023

Preprint

Self Cite

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Climate change, particularly extreme climate events, is likely to alter the population connectivity in diverse taxa. While the population connectivity for highly migratory species is expected to be vulnerable to climate change, the complex migration patterns has made the measurement difficult and studies rare. However, otolith biogeochemistry provides the possibility to evaluate these climate-induced impacts. Japanese Spanish mackerel Scomberomorus niphonius is a highly migratory fish that is widely distributed in the northwest Pacific. Otoliths biogeochemistry of age-1 spawning or spent individuals from three consecutive years (2016–2018), during which a very strong El Niño was experienced (2015–2016), were analyzed to evaluate the temporal variation of connectivity for S. niphonius population along the coast of China. The elemental concentrations of the whole otolith showed that Ba:Ca and Mg:Ca values were found to significantly increase in the El Niño year. The random forest classification and clustering analysis indicated a large-scale connectivity between East China Sea and the Yellow Sea in the El Niño year while the local mackerel assemblages in different spawning areas were more self-sustaining after the El Niño year. These findings lead to the hypothesis that environmental conditions associated with the El Niño Southern Oscillation (ENSO) events in the Northern Pacific Ocean would likely influence the population connectivity of S. niphonius. If so, extreme climate events can result in profound changes in the extent, pattern and connectivity of migratory fish populations. Our study demonstrates that otolith biogeochemistry could provide insight towards revealing how fish population response to extreme climate events.

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Combining otolith elemental signatures with multivariate analytical models to verify the migratory pattern of Japanese Spanish mackerel (Scomberomorus niphonius) in the southern Yellow Sea

Cited by 14 publications

References 47 publications

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

Ontogenetic growth responses to the environmental changes of the swordtip squid (Uroteuthis edulis) spring stock in the East China Sea

Migration Route of Sthenoteuthis oualaniensis in the South China Sea Based on Statolith Trace Element Information

Otolith biogeochemistry reveals impact of extreme climate events on population connectivity of a highly migratory fish

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