Otolith biogeochemistry reveals possible impacts of extreme climate events on population connectivity of a highly migratory fish, Japanese Spanish mackerel Scomberomorus niphonius.
Xindong Pan, Yong Chen, Tao Jiang, Jian Yang, Yongjun Tian
{"title":"Otolith biogeochemistry reveals possible impacts of extreme climate events on population connectivity of a highly migratory fish, Japanese Spanish mackerel <i>Scomberomorus niphonius</i>.","authors":"Xindong Pan, Yong Chen, Tao Jiang, Jian Yang, Yongjun Tian","doi":"10.1007/s42995-024-00229-x","DOIUrl":null,"url":null,"abstract":"<p><p>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 <i>Scomberomorus niphonius</i> 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 <i>S. niphonius</i> 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 whereas the local <i>S. niphonius</i> 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 <i>S. niphonius</i>. 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.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-024-00229-x.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"6 4","pages":"722-735"},"PeriodicalIF":5.8000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602933/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Marine Life Science & Technology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s42995-024-00229-x","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/11/1 0:00:00","PubModel":"eCollection","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
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 whereas the local S. niphonius 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.
Supplementary information: The online version contains supplementary material available at 10.1007/s42995-024-00229-x.
期刊介绍：
Marine Life Science & Technology (MLST), established in 2019, is dedicated to publishing original research papers that unveil new discoveries and theories spanning a wide spectrum of life sciences and technologies. This includes fundamental biology, fisheries science and technology, medicinal bioresources, food science, biotechnology, ecology, and environmental biology, with a particular focus on marine habitats.
The journal is committed to nurturing synergistic interactions among these diverse disciplines, striving to advance multidisciplinary approaches within the scientific field. It caters to a readership comprising biological scientists, aquaculture researchers, marine technologists, biological oceanographers, and ecologists.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
