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Sakamoto T, Takahashi M, Shirai K, Aono T, Ishimura T. Fisheries shocks provide an opportunity to reveal multiple recruitment sources of sardine in the Sea of Japan. Sci Rep 2024; 14:21722. [PMID: 39289567 PMCID: PMC11408631 DOI: 10.1038/s41598-024-72925-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 09/11/2024] [Indexed: 09/19/2024] Open
Abstract
The abrupt decline in sardine catches in the Sea of Japan and the East China Sea (SJ-ECS) in 2014 and 2019 and the recovery in the following years call into question the current assumption that sardines in the SJ-ECS form a self-recruiting subpopulation. To test this hypothesis, we analysed otolith stable oxygen and carbon isotope profiles (δ18O, δ13C) of age-0 and age-1 sardines from 2010 and 2013-2015 year-classes captured in the SJ-ECS, as geographic markers for nursery areas. Age-0 sardines generally showed a significant ontogenetic decrease in otolith δ18O from larval to juvenile stages. However, the majority of age-1 captured in spring 2011, 2015 and 2016 showed non-decreasing otolith δ18O profiles, suggesting that the age-0 off the Japanese coast were not the main source of recruitment. Different migration groups were thus indicated: the "locals" growing up off the Japanese coast and the migrating "nonlocals". The isotope profiles of the "nonlocals" overlapped with those of age-0 captured in the subarctic North Pacific, suggesting that they may be migrants from the Pacific, or perhaps an unobserved northward migration group in the SJ-ECS. Our results highlight the considerable uncertainty in the population structure assumed in current stock assessment models for Japanese sardine.
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Affiliation(s)
- Tatsuya Sakamoto
- Fisheries Resource Research Institute, Japan Fisheries Research and Education Agency, Nagasaki, Japan.
- Hakubi Center, Kyoto University, Yoshidanihonmatsucho, Kyoto Sakyo-ku, Kyoto, 606-8316, Japan.
| | - Motomitsu Takahashi
- Fisheries Resource Research Institute, Japan Fisheries Research and Education Agency, Nagasaki, Japan
| | - Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
| | - Tomoya Aono
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan
- Department of Chemistry and Material Engineering, National Institute of Technology, Ibaraki College, Ibaraki, Japan
| | - Toyoho Ishimura
- Department of Chemistry and Material Engineering, National Institute of Technology, Ibaraki College, Ibaraki, Japan
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
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Baliarsingh SK, Dash B, Jena AK, Raulo S, Samanta A, Joseph S, Nair TMB, Srichandan S, Sureshkumar S. Investigating Indian oil sardine aggregation events in coastal waters of the southeastern Arabian sea. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34271-34281. [PMID: 38702483 DOI: 10.1007/s11356-024-33519-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 04/27/2024] [Indexed: 05/06/2024]
Abstract
The southwest coast of India experiences frequent Indian oil sardine (IOS) nearshore aggregation events, especially in the coastal waters off Kerala. These ephemeral dense IOS aggregation events are known as "Sardine Run". To investigate the reason and provide a scientific basis for these sporadic events, satellite/model-derived physical, meteorological, and biological parameters were analysed. Sea Surface Temperature during a majority of events was in the range of 26-29 °C, agreeing with the reported temperature conditions for IOS in the Arabian Sea. Additionally, a marginal lowering of SST as an effect of precipitation before most of the events might have attracted IOS towards the near-coastal waters in addition to the phytoplankton diet availability, resulting in the aggregation event. However, different scenarios also depicted coastal warming and probable hypoxic conditions in degrading IOS habitat and resulting in beach aggregation events. During most of the IOS aggregation events, the wind and surface current direction was alongshore/coastward, which complemented the propagation of live IOS shoals towards the beach.
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Affiliation(s)
- Sanjiba Kumar Baliarsingh
- Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Govt. of India, Hyderabad, 500090, India.
| | - Bhagyashree Dash
- Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Govt. of India, Hyderabad, 500090, India
| | - Amit Kumar Jena
- Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Susmita Raulo
- Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Govt. of India, Hyderabad, 500090, India
- Faculty of Ocean Science and Technology, Kerala University of Fisheries and Ocean Studies, Madavana, Kochi, 682505, Kerala, India
| | - Alakes Samanta
- Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Govt. of India, Hyderabad, 500090, India
| | - Sudheer Joseph
- Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Govt. of India, Hyderabad, 500090, India
| | | | - Suchismita Srichandan
- Department of Marine Sciences, Berhampur University, Bhanja Bihar, Brahmapur, 760007, India
| | - Sivanpillai Sureshkumar
- Faculty of Ocean Science and Technology, Kerala University of Fisheries and Ocean Studies, Madavana, Kochi, 682505, Kerala, India
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Hodgson TM, Johnston ST, Ottobre M, Painter KJ. Intent matters: how flow and forms of information impact collective navigation. J R Soc Interface 2023; 20:20230356. [PMID: 37817582 PMCID: PMC10565391 DOI: 10.1098/rsif.2023.0356] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/15/2023] [Indexed: 10/12/2023] Open
Abstract
The phenomenon of collective navigation has received considerable interest in recent years. A common line of thinking, backed by theoretical studies, is that collective navigation can improve navigation efficiency through the 'many-wrongs' principle, whereby individual error is reduced by comparing the headings of neighbours. When navigation takes place in a flowing environment, each individual's trajectory is influenced by drift. Consequently, a potential discrepancy emerges between an individual's intended heading and its actual heading. In this study, we develop a theoretical model to explore whether collective navigation benefits are altered according to the form of heading information transmitted between neighbours. Navigation based on each individual's intended heading is found to confer robust advantages across a wide spectrum of flows, via both a marked improvement in migration times and a capacity for a group to overcome flows unnavigable by solitary individuals. Navigation based on individual's actual headings is far less effective, only offering an improvement under highly favourable currents. For many currents, sharing actual heading information can even lead to journey times that exceed those of individual navigators.
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Affiliation(s)
- T. M. Hodgson
- Maxwell Institute for Mathematical Sciences and Mathematics Department, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - S. T. Johnston
- School of Mathematics and Statistics, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - M. Ottobre
- Maxwell Institute for Mathematical Sciences and Mathematics Department, Heriot-Watt University, Edinburgh EH14 4AS, UK
- School of Mathematics and Statistics, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - K. J. Painter
- DIST, Politecnico di Torino, Viale Pier Andrea Mattioli 39, 10125 Torino, Italy
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Antoniou A, Manousaki T, Ramírez F, Cariani A, Cannas R, Kasapidis P, Magoulas A, Albo-Puigserver M, Lloret-Lloret E, Bellido JM, Pennino MG, Follesa MC, Esteban A, Saraux C, Sbrana M, Spedicato MT, Coll M, Tsigenopoulos CS. Sardines at a junction: Seascape genomics reveals ecological and oceanographic drivers of variation in the NW Mediterranean Sea. Mol Ecol 2023; 32:1608-1628. [PMID: 36596297 DOI: 10.1111/mec.16840] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/20/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023]
Abstract
By evaluating genetic variation across the entire genome, one can address existing questions in a novel way while raising new ones. The latter includes how different local environments influence adaptive and neutral genomic variation within and among populations, providing insights into local adaptation of natural populations and their responses to global change. Here, under a seascape genomic approach, ddRAD data of 4609 single nucleotide polymorphisms (SNPs) from 398 sardines (Sardina pilchardus) collected in 11 Mediterranean and one Atlantic site were generated. These were used along with oceanographic and ecological information to detect signals of adaptive divergence with gene flow across environmental gradients. The studied sardines constitute two clusters (FST = 0.07), a pattern attributed to outlier loci, highlighting putative local adaptation. The trend in the number of days with sea surface temperature above 19°C, a critical threshold for successful sardine spawning, was crucial at all levels of population structuring with implications on the species' key biological processes. Outliers link candidate SNPs to the region's environmental heterogeneity. Our findings provide evidence for a dynamic equilibrium in which population structure is maintained by physical and ecological factors under the opposing influences of migration and selection. This dynamic in a natural system warrants continuous monitoring under a seascape genomic approach that might benefit from a temporal and more detailed spatial dimension. Our results may contribute to complementary studies aimed at providing deeper insights into the mechanistic processes underlying population structuring. Those are key to understanding and predicting future changes and responses of this highly exploited species in the face of climate change.
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Affiliation(s)
- Aglaia Antoniou
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, Greece
| | - Tereza Manousaki
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, Greece
| | - Francisco Ramírez
- Institute of Marine Science (ICM-CSIC), Passeig Marítim de la Barceloneta, Barcelona, Spain
| | - Alessia Cariani
- Dept. Biological, Geological & Environmental Sciences (BiGeA), Alma Mater Studiorum - Università di Bologna, Ravenna, Italy.,Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy
| | - Rita Cannas
- Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy.,Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Panagiotis Kasapidis
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, Greece
| | - Antonios Magoulas
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, Greece
| | - Marta Albo-Puigserver
- Institute of Marine Science (ICM-CSIC), Passeig Marítim de la Barceloneta, Barcelona, Spain.,Centro Oceanográfico de Baleares, Instituto Español de Oceanografía (COB-CNIEO/CSIC), Palma, Spain
| | - Elena Lloret-Lloret
- Institute of Marine Science (ICM-CSIC), Passeig Marítim de la Barceloneta, Barcelona, Spain
| | - Jose Maria Bellido
- Centro Oceanográfico de Murcia, Instituto Español de Oceanografía, (COMU-CNIEO/CSIC), Murcia, Spain
| | - Maria Grazia Pennino
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía (COVI-CNIEO/CSIC), Vigo, Pontevedra, Spain
| | - Maria Cristina Follesa
- Consorzio Nazionale Interuniversitario per le Scienze del Mare (CoNISMa), Rome, Italy.,Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Antonio Esteban
- Centro Oceanográfico de Murcia, Instituto Español de Oceanografía, (COMU-CNIEO/CSIC), Murcia, Spain
| | - Claire Saraux
- MARBEC, University of Montpellier, CNRS, IFREMER, IRD, Sète, France
| | - Mario Sbrana
- Consorzio per il Centro Interuniversitario di Biologia Marina ed Ecologia Applicata G, Livorno, Italy
| | | | - Marta Coll
- Institute of Marine Science (ICM-CSIC), Passeig Marítim de la Barceloneta, Barcelona, Spain
| | - Costas S Tsigenopoulos
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, Greece
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Oestreich WK, Aiu KM, Crowder LB, McKenna MF, Berdahl AM, Abrahms B. The influence of social cues on timing of animal migrations. Nat Ecol Evol 2022; 6:1617-1625. [DOI: 10.1038/s41559-022-01866-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 08/01/2022] [Indexed: 11/09/2022]
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