Article
Multidisciplinary Sciences
Jay R. Rooker, R. J. David Wells, Barbara A. Block, Hui Liu, Hannes Baumann, Wei-Chuan Chiang, Michelle Zapp Sluis, Nathaniel R. Miller, John A. Mohan, Seiji Ohshimo, Yosuke Tanaka, Michael A. Dance, Heidi Dewar, Owyn E. Snodgrass, Jen-Chieh Shiao
Summary: Geochemical chronologies were used to analyze the migration patterns of Pacific bluefin tuna (PBT) from coastal nurseries to offshore waters, focusing on key elements like Mg, Mn, and Sr ratios to identify transitions. The majority of adult PBT in the study were found to originate from the East China Sea, suggesting a strong link between natal origin and migration patterns.
SCIENTIFIC REPORTS
(2021)
Article
Fisheries
Jessica H. Farley, Naomi P. Clear, Kyne Krusic-Golub, J. Paige Eveson, Jock W. Young
Summary: This study investigates the differences in growth parameters of swordfish and assesses the most appropriate hard part for age estimation. The results reveal methodological differences in estimating age using fin rays in the Pacific, and a clear bias in age estimates between fin rays and otoliths. The study recommends standardizing hard part reading methods and investigating otolith-based age estimation for billfish stocks and other fish species.
FISHERIES RESEARCH
(2022)
Article
Multidisciplinary Sciences
Benjamin Mayne, Tom Espinoza, David A. Crook, Chloe Anderson, Darren Korbie, Jonathan C. Marshall, Mark J. Kennard, Doug J. Harding, Gavin L. Butler, Brien Roberts, Josh Whiley, Sharon Marshall
Summary: Age structure information is crucial for the conservation and management of animal populations. This study demonstrates the use of DNA methylation as a non-lethal method to estimate the age of golden perch. The correlation between otolith age and epigenetic age was high across all clocks, with median absolute errors ranging from 2.4 to 184.6 days. This highlights the emerging utility of epigenetic clocks in supporting fish population and fisheries management.
SCIENTIFIC REPORTS
(2023)
Article
Biodiversity Conservation
Fernando G. Taboada, Jong-Yeon Park, Barbara A. Muhling, Desiree Tommasi, Kisei R. Tanaka, Ryan R. Rykaczewski, Charles A. Stock, Jorge L. Sarmiento
Summary: Subseasonal to decadal ocean forecasting plays a crucial role in managing living marine resources in a changing ocean. This study demonstrates the importance of incorporating three-dimensional biogeochemical information into ecological forecasts to anticipate fluctuations in bigeye tuna populations in the Pacific Ocean. The findings highlight the impact of ocean warming and deoxygenation on the dynamics of bigeye tuna and emphasize the need for efficient dynamic management strategies to promote sustainable use of marine resources.
JOURNAL OF APPLIED ECOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Johann D. Bell, Inna Senina, Timothy Adams, Olivier Aumont, Beatriz Calmettes, Sangaalofa Clark, Morgane Dessert, Marion Gehlen, Thomas Gorgues, John Hampton, Quentin Hanich, Harriet Harden-Davies, Steven R. Hare, Glen Holmes, Patrick Lehodey, Matthieu Lengaigne, William Mansfield, Christophe Menkes, Simon Nicol, Yoshitaka Ota, Coral Pasisi, Graham Pilling, Chis Reid, Espen Ronneberg, Alex Sen Gupta, Katherine L. Seto, Neville Smith, Sue Taei, Martin Tsamenyi, Peter Williams
Summary: Climate change will impact the distribution of tuna in Pacific Small Island Developing States, potentially causing declines in fish catches and government revenue under high emissions scenarios. However, reducing greenhouse gas emissions could lead to sustainability for tuna-dependent Pacific Island economies. Regional cooperation within fisheries management organizations may help safeguard the benefits derived from tuna despite climate-induced shifts in fish distribution.
NATURE SUSTAINABILITY
(2021)
Article
Oceanography
Jen-Chieh Shiao, Jhen Hsu, Ching-Chun Cheng, Wen-Yu Tsai, Han-Bo Lu, Yosuke Tanaka, Pei-Lin Wang
Summary: The Pacific bluefin tuna is an economically important species, but its population has decreased due to overexploitation. Research shows that most tuna spawn in the Western North Pacific, with 69% showing trans-Pacific migration, supporting the one-stock hypothesis.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2021)
Article
Fisheries
Can Zhou
Summary: Somatic growth is crucial for fishery stock productivity. This study investigates the potential growth response of Atlantic bluefin tuna to regional climate patterns and finds significant nonlinear growth responses to climate variations. Simulation results suggest that low measurement error improves the detection of climate signals, cautioning against careless integration of different growth data types.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Biodiversity Conservation
Colin P. Gallagher, Rick J. Wastle, Julie R. Marentette, Louise Chavarie, Kimberly L. Howland
Summary: This study assessed precision and bias in age estimations for lake trout using different readers with varying levels of experience. It found that sectioned otoliths provided more precise age estimations compared to whole otoliths and fin-ray sections. Increased reader confidence was associated with higher precision and younger age estimates, particularly for whole otoliths.
Article
Multidisciplinary Sciences
Yan-Lun Wu, Kuo-Wei Lan, Karen Evans, Yi-Jay Chang, Jui-Wen Chan
Summary: Spatial variations in tuna population and habitat preference are influenced by large-scale climate fluctuations, such as the Pacific decadal oscillation (PDO) and Atlantic multidecadal oscillation (AMO). The catch per unit effort (CPUE) of Indo-Pacific Ocean yellowfin tuna (YFT) is higher during negative AMO and positive PDO phases. The YFT habitat preference in the tropical Pacific Ocean shows seesaw patterns due to different environmental factors influenced by the PDO phase.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Romina V. Barbosa, David Point, Anais Medieu, Valerie Allain, David P. Gillikin, Lydie I. E. Couturier, Jean-Marie Munaron, Francois Roupsard, Anne Lorrain
Summary: Understanding the relationship between mercury in seafood and oceanic methylmercury distribution is crucial for human mercury exposure assessment. Mercury concentrations in bigeye and yellowfin tunas from the Western and Central Pacific showed similar latitudinal patterns in blood and muscle, suggesting both tissues are suitable for mercury monitoring. The correlation between tuna mercury content and ambient seawater methylmercury concentrations highlights the importance of considering dissolved methylmercury uptake in addition to food assimilation in modeling mercury levels in tuna.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Romina V. Barbosa, David Point, Anais Medieu, Valerie Allain, David P. Gillikin, Lydie I. E. Couturier, Jean-Marie Munaron, Francois Roupsard, Anne Lorrain
Summary: Understanding the relationship between mercury in seafood and the distribution of oceanic methylmercury is important for understanding human mercury exposure. This study found similar latitudinal patterns of mercury concentrations in the muscle and blood of bigeye and yellowfin tunas, indicating that both tissues are suitable for monitoring mercury levels. The analysis of different tuna species showed species- and tissue-specific mercury patterns, suggesting variations in mercury uptake and accumulation processes associated with their vertical habitat.
MARINE POLLUTION BULLETIN
(2022)
Article
Oceanography
Hanny John P. Mediodia
Summary: This study examines the impact of sea surface temperature on tuna catch in the Eastern Pacific Ocean countries, finding that catch increases with rising SST, with the highest catches in the eastern coastal borders. Mexico and Kiribati show significant differences in response to SST increase, while Kiribati and French Polynesia exhibit tuna catch revenue correlated with coastal population density.
OCEAN & COASTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Francisco Cerna, Guillermo Moyano, Christian Valero, Lizandro Munoz, Guido Plaza, Steven E. Campana
Summary: This study validated the ages of Chilean jack mackerel using three methods, providing crucial information for enhancing stock assessment of this important commercial species.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Computer Science, Information Systems
Suciadi Catur Nugroho, Riza Yuliratno Setiawan, Martiwi Diah Setiawati, Djumanto, Susilo Budi Priyono, R. Dwi Susanto, Anindya Wirasatriya, Rakhma Fitria Larasati
Summary: To maintain sustainable fisheries, the management of albacore tuna is regulated globally by Regional Fisheries Management Organizations. This research aims to identify optimal habitats for albacore tuna in the southeastern Indian Ocean by analyzing in situ data and satellite imagery. The results indicate that albacore tuna prefer waters with specific temperature and chlorophyll-a concentration ranges, and they are mostly captured at higher latitudes in the Indian Ocean.
Article
Environmental Sciences
Tung-Yao Hsu, Yi Chang, Ming-An Lee, Ren-Fen Wu, Shih-Chun Hsiao
Summary: This study identified potential fishing grounds of skipjack tuna in the Western and Central Pacific Ocean using the habitat suitability index. The majority of global and Taiwanese data were found within suitable habitat ranges, with the model performing well in fitting daily forecast and actual fishing position data. Results from this study could contribute to habitat monitoring and sustainable fisheries management for skipjack tuna.
Article
Multidisciplinary Sciences
Iraide Artetxe-Arrate, Igaratza Fraile, Jessica Farley, Audrey M. Darnaude, Naomi Clear, Naiara Rodriguez-Ezpeleta, David L. Dettman, Christophe Pecheyran, Inigo Krug, Anais Medieu, Mohamed Ahusan, Craig Proctor, Asep Priatna, Pratiwi Lestari, Campbell Davies, Francis Marsac, Hilario Murua
Summary: The study examined the potential of otolith microchemistry in understanding the spatial dynamics of skipjack tuna, a valuable commercial species in the Indian Ocean. Differences in otolith chemical signatures were observed among individuals from different nursery areas, but there was significant overlap in the signatures of the three nurseries. Cohort effects on otolith trace element signatures were detected, highlighting the importance of understanding seasonal variations in oceanographic conditions for species with multiple reproductive peaks throughout the year.
Article
Ecology
Iraide Artetxe-Arrate, Igaratza Fraile, Naomi Clear, Audrey M. Darnaude, David L. Denman, Christophe Pecheyran, Jessica Farley, Hilario Murua
Summary: Yellowfin tuna are highly exploited in the Indian Ocean, with their stock structure not well understood. This study collected otoliths from young-of-the-year yellowfin tuna in major nursery areas to explore the spatial distribution of trace elements and stable isotopes, revealing significant regional variations in the chemical signatures of the otoliths. The study demonstrates that these baseline chemical signatures can be used as natural tags to determine nursery origins in the Indian Ocean.
MARINE ECOLOGY PROGRESS SERIES
(2021)
Article
Green & Sustainable Science & Technology
Johann D. Bell, Inna Senina, Timothy Adams, Olivier Aumont, Beatriz Calmettes, Sangaalofa Clark, Morgane Dessert, Marion Gehlen, Thomas Gorgues, John Hampton, Quentin Hanich, Harriet Harden-Davies, Steven R. Hare, Glen Holmes, Patrick Lehodey, Matthieu Lengaigne, William Mansfield, Christophe Menkes, Simon Nicol, Yoshitaka Ota, Coral Pasisi, Graham Pilling, Chis Reid, Espen Ronneberg, Alex Sen Gupta, Katherine L. Seto, Neville Smith, Sue Taei, Martin Tsamenyi, Peter Williams
Summary: Climate change will impact the distribution of tuna in Pacific Small Island Developing States, potentially causing declines in fish catches and government revenue under high emissions scenarios. However, reducing greenhouse gas emissions could lead to sustainability for tuna-dependent Pacific Island economies. Regional cooperation within fisheries management organizations may help safeguard the benefits derived from tuna despite climate-induced shifts in fish distribution.
NATURE SUSTAINABILITY
(2021)
Article
Fisheries
Shijie Zhou, Roy A. Deng, Matthew R. Dunn, Simon D. Hoyle, Yeming Lei, Ashley J. Williams
Summary: Sharks typically have long lifespans, slow growth rates, and low fecundity, making them vulnerable to fishing. Developing management reference points for elasmobranchs based on their life-history information is more feasible than traditional stock assessments. Evaluating natural mortality rate estimators is crucial for developing reference points, with different methods producing varying results for estimating fishing mortality reference points.
FISH AND FISHERIES
(2022)
Article
Environmental Sciences
Shui-Kai Chang, Tzu-Lun Yuan, Simon D. Hoyle, Jessica H. Farley, Jen-Chieh Shiao
Summary: This study reviews the aging data and growth parameters of four flyingfish species in Taiwan, estimating two spawning seasons per year and length-weight relationships for each species. Multiple growth models were examined, showing the most optimal model for sex-combined data and sex-specific cases.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Jeff A. Muir, Richard J. Barker, Melanie R. Hutchinson, Bruno M. Leroy, Simon J. Nicol, Joe Scutt Phillips
Summary: This study assessed the post-release survival probabilities of bigeye and yellowfin tuna during commercial longline operations. It found that the overall survival probability was estimated to be around 10%, with most mortalities occurring within four days post-release. The study also suggests that reducing the time on the hook may increase this probability up to 50%.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Tiffany Lorraine Sih, Ashley John Williams, Yi Hu, Michael John Kingsford
Summary: Marine resources are often shared among countries, and otolith chemical analyses can be used to understand the population structure of fish stocks. The study compared two methods, solution-based ICP-MS and LA-ICP-MS, for examining the population structure of two deepwater snappers. The results showed that both methods could effectively distinguish among different populations, with the LA-ICP-MS method providing higher resolution.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Environmental Sciences
Simon Nicol, Patrick Lehodey, Inna Senina, Don Bromhead, Andrea Y. Frommel, John Hampton, Jon Havenhand, Daniel Margulies, Philip L. Munday, Vernon Scholey, Jane E. Williamson, Neville Smith
Summary: This study examines the combined effects of climate change on the yellowfin tuna population and finds that acidification will have smaller impacts compared to ocean warming, but will still affect the dynamics of the population. The distribution of yellowfin tuna is projected to shift eastward, and acidification is expected to weaken the increase in abundance in the eastern Pacific.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Janice Natasha, Brian L. Stockwell, Amandine D. Marie, John Hampton, Neville Smith, Simon Nicol, Ciro Rico
Summary: This study on the bigeye tuna fishery in the Western and Central Pacific Ocean found no substantial evidence to challenge the current assumption of panmixia, but detected potential adaptive divergence in some samples collected in 2013.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Jessica H. Farley, Naomi P. Clear, Kyne Krusic-Golub, J. Paige Eveson, Jock W. Young
Summary: This study investigates the differences in growth parameters of swordfish and assesses the most appropriate hard part for age estimation. The results reveal methodological differences in estimating age using fin rays in the Pacific, and a clear bias in age estimates between fin rays and otoliths. The study recommends standardizing hard part reading methods and investigating otolith-based age estimation for billfish stocks and other fish species.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Tom Peatman, Matthew T. Vincent, Joe Scutt Phillips, Simon Nicol
Summary: A study was conducted on skipjack and yellowfin tuna in the Western and Central Pacific Ocean, using mark-recapture data from 1977 to 2017. The analysis revealed an increase in fishing mortality over time for both species, with evidence of changes in selectivity for yellowfin. Estimates of natural mortality were highest for smaller individuals and generally lower for larger sizes. There was no clear evidence of temporal changes in natural mortality rates for either species.
FISHERIES RESEARCH
(2022)
Article
Environmental Sciences
Camille Goodman, Ruth Davis, Kamal Azmi, Johann Bell, Grantly R. R. Galland, Eric Gilman, Bianca Haas, Quentin Hanich, Patrick Lehodey, Lara Manarangi-Trott, Simon Nicol, Pablo Obregon, Graham Pilling, Inna Senina, Katherine Seto, Martin Tsamenyi
Summary: Climate change is expected to change the distribution of tropical tuna stocks in the Pacific Ocean. Regional fisheries management organizations will need to develop a framework for cooperation to fulfill their responsibilities. Key areas for cooperation include effective decision-making, scientific research, and determining appropriate fishing limits.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Marine & Freshwater Biology
Iraide Artetxe-Arrate, Igaratza Fraile, Jessica Farley, Audrey M. Darnaude, Naomi Clear, David L. Dettman, Campbell Davies, Francis Marsac, Hilario Murua
Summary: The study utilized otolith delta O-18 values of young-of-the-year yellowfin tuna from various nursery areas in the equatorial Indian Ocean to establish a reference isotopic signature for predicting the origin of sub-adult and adult individuals. The analysis found that sub-adult tuna from Reunion Island showed similarity to the West nursery signature, while those from Pakistan did not match any of the known nurseries sampled, indicating an additional nursery source.
OCEANS-SWITZERLAND
(2021)