Article
Environmental Sciences
Jose M. Quintanilla, Estrella Malca, John Lamkin, Alberto Garcia, Raul Laiz-Carrin
Summary: The study focused on the pre-flexion stages of Atlantic bluefin tuna larvae collected in the Gulf of Mexico and the Mediterranean Sea. It examined the growth, otolith biometry, and stable isotopes of the larvae. The results showed that the Gulf of Mexico larvae had faster growth, larger otoliths, wider daily increments, and lower δ15N values compared to the Mediterranean. In addition, the study found a direct relationship between growth potential, development, and maternal transmission of isotopic signatures.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Mycology
Alejandro Lopez-Verdejo, Francisco E. Montero, Fernando de la Gandara, Miguel A. Gallego, Aurelio Ortega, Juan Antonio Raga, Jose F. Palacios-Abella
Summary: A new microsporidian species, Glugea thunni, has been reported in farmed Atlantic bluefin tunas from the Spanish Mediterranean. This pathogen causes severe pathology in the visceral cavity of the fish, posing a significant risk to bluefin tuna aquaculture.
Article
Food Science & Technology
Federico Girolametti, Anna Annibaldi, Oliana Carnevali, Paolo Pignalosa, Silvia Illuminati, Cristina Truzzi
Summary: This study investigated the levels of Cd, Pb, and Fe in muscle of Mediterranean bluefin tuna to assess the safety and quality of this fish as seafood. Differences were found between wild and farmed groups, but both met EU limits, making bluefin tuna a safe seafood option.
Article
Fisheries
Enrique Rodriguez-Marin, Dheeraj Busawon, Patricia L. Luque, Isabel Castillo, Nathan Stewart, Kyne Krusic-Golub, Aida Parejo, Alex Hanke
Summary: This study determined the timing of annulus formation in Atlantic bluefin tuna otoliths through marginal increment and marginal edge analysis. The results showed that annulus formation begins in June and is completed by the end of November, with the translucent band reaching maximum development in May. This has important implications for accurate age determination of Atlantic bluefin tuna.
Article
Acoustics
V. Puig-Pons, P. Munoz-Benavent, I. Perez-Arjona, A. Ladino, S. Llorens-Escrich, G. Andreu-Garcia, Jose M. Valiente-Gonzalez, V. Atienza-Vanacloig, P. Ordonez-Cebrian, Jose I. Pastor-Gimeno, V. Espinosa
Summary: This paper proposes an indirect method to estimate Bluefin Tuna biomass in cages using acoustic techniques. The study successfully analyzed and correlated the acoustic and optical data, and predicted the length of the tuna, which can improve production management and catch control estimations.
Article
Fisheries
I. Ruiz-Jarabo, R. Laiz-Carrion, A. Ortega, F. De la Gandara, J. M. Quintanilla, J. M. Mancera
Summary: This study investigated the effects of environmental salinity and pH on the survival of larval Atlantic bluefin tuna. The results showed that larval survival rate was higher at intermediate salinities and lower at extreme salinities. The study also found that lower active pumps activities were associated with higher survival rates.
Article
Agriculture, Dairy & Animal Science
Giambattista Bello, Nicoletta Santamaria, Aldo Corriero
Summary: Most fish undergo distinct growth phases during ontogenesis, with a crucial passage from juvenile to adult phase occurring at the onset of sexual maturity, leading to changes in body proportion and/or growth rate. These changes can be detected as change-points in biometric relationships.
Article
Environmental Sciences
Estrella Malca, Jose M. Quintanilla, Trika Gerard, Francisco Alemany, Tracey Sutton, Alberto Garcia, John T. Lamkin, Raul Laiz-Carrion
Summary: Atlantic bluefin tuna is a globally important fishery resource, and this study found significant population differences between larvae from the Gulf of Mexico and the Mediterranean Sea. The Gulf of Mexico larvae exhibited faster growth, indicating the need for specific management strategies based on the characteristics of each spawning area.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Pauline Wischhusen, Monica B. Betancor, Matthew Sprague, Aurelio Ortega, Fernando de la Gandara, Douglas R. Tocher, Gabriel Mourente
Summary: This study investigated the effect of dietary selenium supplementation on physiological parameters, selenoprotein and antioxidant enzyme gene expression in Atlantic bluefin tuna larvae. It was found that feeding a diet containing 4.42 μg Se/g dry mass improved the expression of selenoproteins and antioxidant genes. This suggests that non-selenium-enriched rotifers may be suboptimal for first-feeding Atlantic bluefin tuna larvae.
Article
Environmental Sciences
Simon Dedman, Emilius A. Aalto, Michael J. W. Stokesbury, Robert J. Schallert, Michael R. Castleton, Barbara A. Block
Summary: This study developed a new method to assign unknown individuals to potential spawning stocks of Atlantic bluefin tuna (ABT) using existing tag data. The method, based on habitat usage and vertical movement behaviors, significantly increased the accuracy of stock assignment before genetic analysis.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Alexander C. Hansell, Sarah L. Becker, Steven X. Cadrin, Matthew Lauretta, John F. Walter III, Lisa A. Kerr
Summary: This study used a vector auto-regressive spatio-temporal model (VAST) to estimate the changes in spatial distribution of Atlantic bluefin tuna in US waters. Standardized indices of abundance for different size classes of fish were created. The results indicated that the distribution of both large and small fish has shifted in recent years, primarily influenced by local sea surface temperature. The spatio-temporal indices showed less inter-annual variability and similar overall trends compared to previous results. This study advanced our understanding of bluefin tuna spatial distributions and provided robust abundance indices for future stock assessments.
FISHERIES RESEARCH
(2022)
Article
Marine & Freshwater Biology
John M. Logan, Andrew S. Wozniak, Jose Luis Varela, Alison Robertson
Summary: Atlantic bluefin tuna spawn in the Gulf of Mexico and Mediterranean Sea and migrate to foraging habitats in the North Atlantic. Their natal origin has been linked to spawning ground origins using oxygen isotope analysis, but seasonal connectivity is not fully understood. We used nitrogen isotope data to estimate the foraging habitats of Atlantic bluefin tuna on eastern and western Atlantic spawning grounds.
Article
Chemistry, Applied
Inma Salvat-Leal, Aurelio Ortega, Edurne Blanco, Jaime Garcia, Diego Romero
Summary: Integral Atlantic bluefin tuna aquaculture will be a reality, and tuna batches need to be identifiable to avoid fraud and ensure conservation. This study analyzed the components of juvenile bluefin tissue to discriminate between captive-born and raised fish, sea-raised fish, and wild tuna. Muscle was found to be the best tissue for distinguishing tuna batches.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Fisheries
Emilius A. Aalto, Simon Dedman, Michael J. W. Stokesbury, Robert J. Schallert, Michael Castleton, Barbara A. Block
Summary: Atlantic bluefin tuna (ABT) are large, migratory predators that spawn in the Gulf of Mexico, Mediterranean Sea, and recently discovered Slope Sea region off New England. The behavior and distribution of ABT in the Slope Sea have been poorly understood, but this study provides important insights into their spawning behavior and potential implications for management and conservation efforts.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Fisheries
Emilius A. Aalto, Francesco Ferretti, Matthew Lauretta, John F. Walter, Michael J. W. Stokesbury, Robert J. Schallert, Barbara A. Block
Summary: This study utilized movement patterns from a multidecadal tagging dataset to create monthly distribution maps for Atlantic bluefin tuna, separating catch records into stock-specific catch time series. The research identified an increase in catch proportion from the eastern stock over the past two decades, attributed to a decrease in CPUE in regions dominated by the western stock.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
