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
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
Environmental Sciences
Juan Munoz-Arnanz, Alice Bartalini, Luis Alves, Marco FL. Lemos, Sara C. Novais, Begona Jimenez
Summary: This study investigated the contamination levels of blue sharks from the North East Atlantic in 2019, specifically focusing on PCBs, PCDD/Fs, and PBDEs. The results showed an increase in PBDE loads, potentially reflecting the growing environmental presence of these pollutants. The different congener profiles observed in blue sharks from different geographical areas highlight the species' potential as a bioindicator of regional pollution. Significant differences in pollutant concentrations between muscle and liver were observed, likely due to varying toxicokinetics. The concentrations of PCBs and dioxin-like POPs in muscle were below the EU maximum allowed levels, while concentrations in the liver exceeded the European levels for tolerable intake. PBDE concentrations surpassed the EQS established by the European Water Framework Directive in both liver and muscle samples.
ENVIRONMENTAL POLLUTION
(2022)
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
Lai Wei, Qinghui Huang, Yanling Qiu, Jianfu Zhao, Panu Rantakokko, Hongwen Gao, Fei Huang, Anders Bignert, Ake Bergman
Summary: Black-crowned night heron eggs are useful indicators for biomonitoring environmental pollution in China. This study examined the presence of persistent organic pollutants (POPs) in thirty eggs collected from the upper Yangtze River Basin. The results showed the eggs contained POPs, with organochlorine pesticides (OCPs) being the dominant contaminants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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
Environmental Sciences
X. Ortiz Almirall, N. Sola Yague, R. Gonzalez-Olmos, J. Diaz-Ferrero
Summary: This study found that various organic chlorides can be completely degraded under UV irradiation and has significant effects on removing organic pollutants from fish oil. However, its application for food oil is limited, yet it can still be used for the decontamination of industrial oils.
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
Environmental Sciences
Ho-Joong Kim, Jin-Woo Jeon, Seung-Man Hwang, Kyung-Il Chu, Yong-Ho Cha, Young-Don Kwak, Young-Hee Kim, Sung-Deuk Choi, Muhammad Aslam, Chang-Gyun Kim
Summary: This study monitored seasonal/regional variations of PCDD/DFs and dl-PCBs in the ambient air for ten years, showing a significant decrease in PCDD/DFs concentrations due to strict regulations. The long-term nationwide assessments suggest that South Korea's environmental policy to manage POPs has been successful in the last decade.
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
Fisheries
Antonio Medina, Francisco J. Abascal, Jose L. Varela
JOURNAL OF FISH BIOLOGY
(2020)
Article
Fisheries
Bo Shi, Fangmin Xu, Qicun Zhou, Melanie K. Regan, Monica B. Betancor, Douglas R. Tocher, Mihai Sun, Fanyi Meng, Lefei Jiao, Min Jin
Summary: The study showed that dietary organic zinc significantly improved the growth performance, mineral bioaccumulation, innate immune response, and antioxidant capacity of juvenile Pacific white shrimp. The optimal dietary zinc requirement was estimated to be 104.8 mg kg(-1).
AQUACULTURE REPORTS
(2021)
Article
Fisheries
Antonio Medina, Ana Magro, Jose Antonio Paullada-Salmeron, Jose Luis Varela
Summary: In this study, the authors investigated late atretic follicles in the ovaries of Atlantic bluefin tuna using transmitted light and epifluorescence microscopy. They found that lipofuscin granules accumulate in the cytoplasm of LAF cells, and the autofluorescent properties of lipofuscins can be used to identify LAF in unstained histological sections. This method of fluorescence microscopy provides a fast and effective way to assess late atresia in fishes and quantify sexual maturity in individuals long after the spawning season.
JOURNAL OF FISH BIOLOGY
(2021)
Article
Ecology
Jose Luis Varela, Antonio Medina, Santiago Deniz, Francisco Javier Abascal
Summary: This study investigated the trophic biology of Atlantic bluefin tuna (ABFT) in the Canary Islands, showing that ABFT actively foraged on fish prey, primarily snipefish. Plastic debris was also found in some stomachs. Isotopic analysis indicated inter-annual differences in diet, with a more diverse diet in 2017. The results suggest that the Canary Islands serve as a foraging ground for ABFT.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Nutrition & Dietetics
Matthew Sprague, Tsz Chong Chau, David I. Givens
Summary: Iodine content was assessed in wild and farmed seafood available to UK consumers, with wild fish generally exhibiting higher levels of iodine than farmed fish. The iodine content was mainly influenced by the type and inclusion level of feed ingredients, and the contribution of different seafood types to iodine intake varied.
Article
Biodiversity Conservation
Marina Prieto-Amador, Antonio Medina, Jose Luis Varela
Summary: This study investigated the trophic relationships between juvenile albacore and skipjack tuna in the Gulf of Cadiz. The analysis of stomach contents and stable isotope ratios revealed significant differences in foraging patterns and trophic niche breadths between the two tuna species, indicating evidence of food resource partitioning and preventing trophic competition.
MARINE BIODIVERSITY
(2022)
Article
Ecology
Antonio Medina, Ana Magro, David Macias, Jose Luis Varela
Summary: Two distinct contingents of Atlantic bluefin tuna, migrants and residents, occur in the Strait of Gibraltar. While reproductive features of migrants have been widely studied, the life history of residents remains poorly investigated, making their contribution to the eastern stock productivity unknown. Our findings highlight biometric and reproductive differences between the two populations.
MARINE ECOLOGY PROGRESS SERIES
(2022)
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
Multidisciplinary Sciences
Patricia Lastra Luque, Iraide Artetxe-Arrate, Gorka Bidegain, Saburo Sakai, Fanny Claverie, Christophe Pecheyran, Igaratza Fraile, Hilario Murua, Jose Luis Varela, Antonio Medina, Haritz Arrizabalaga
Summary: This study investigated the chemical information in the edges of fin spines of Atlantic bluefin tuna. The results showed that the chemical signatures in the fin spine edge can be used as a natural habitat marker and provide insights into habitat use and spatial population dynamics of fish species.
Article
Ecology
Jose L. Varela, Francisco J. Abascal, Antonio Medina
Summary: The foraging patterns and trophic interactions of young-of-the-year Atlantic bluefin (Thunnus thynnus, ABFT) and skipjack (Katsuwonus pelamis, SKJ) tunas co-occurring in the coastal waters off the Gulf of Cadiz were studied using stomach content and stable isotope analyses. Both species primarily fed on epipelagic fishes, and ABFT were found to have recently foraged at higher trophic levels than SKJ. The analyses also showed a broader niche for SKJ, indicating a more diverse diet, and no significant niche overlap between the two species, suggesting resource partitioning and reduced competition.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Jingjing Lu, Xinyue Tao, Jiaxiang Luo, Tingting Zhu, Lefei Jiao, Peng Sun, Qicun Zhou, Douglas R. Tocher, Min Jin
Summary: This study aimed to investigate the effects of dietary choline supplementation on Pacific white shrimp. The results showed that dietary choline supplementation promoted the deposition of choline and its metabolites, had negative effects on the histological structure and fatty acid profile of the hepatopancreas, and regulated lipid metabolism. Appropriate dietary choline levels promoted the development of hepatopancreas R cells and maintained normal lipid accumulation, while high dietary choline levels enhanced lipid export and fatty acid oxidation, and inhibited de novo fatty acid synthesis.
Article
Fisheries
Monica B. Betancor, Matthew Sprague, Daniel Gonzalez-Silvera, Aurelio Ortega, Fernando de la Gandara, Xu Gong, Johnathan A. Napier, Douglas R. Tocher, Gabriel Mourente
Summary: Recently, genetically modified Camelina sativa has been used to produce oils rich in omega-3 fatty acids, which can potentially replace fish oil in the feeds for juvenile Atlantic Bluefin tuna. The study found that the oils showed positive effects on the growth, survival, and feed utilization of the tuna. Furthermore, the oils upregulated the expression of genes related to lipid metabolism.
Article
Agricultural Economics & Policy
Cecile Brugere, Krishna Pillai Padmakumar, William Leschen, Douglas R. Tocher
Summary: The study reveals that fish farmers familiar with manufactured feed have a more positive attitude towards feed containing non-conventional ingredients. Peer pressure, importance and benefits of the novel aquafeed, perceived comparative advantage, and uncertainty regarding outcomes are the main determinants of intention to adopt the new feed innovation.
AQUACULTURE ECONOMICS & MANAGEMENT
(2021)
Review
Environmental Sciences
Attila Csaba Kondor, Anna Viktoria Vancsik, Laszlo Bauer, Lili Szabo, Zoltan Szalai, Gergely Jakab, Gabor Maasz, Marta Pedrosa, Maria Jose Sampaio, Ana Rita Lado Ribeiro
Summary: This review provides a critical overview of research on the removal efficiency of priority substances and compounds of emerging concern through bank filtration, discussing influencing factors and future challenges. The findings show that the efficiency of bank filtration is influenced by multiple factors and varies for different substances.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinyan Wang, Shuai Zhang, Huihui Yan, Zhao Ma, Yunshan Zhang, Haining Luo, Xueli Yang
Summary: This study investigated the association between ambient PM2.5, O3 pollution, and ovarian reserve in reproductive-aged Chinese women. The results showed that increased exposure to PM2.5 and O3 was associated with decreased AMH levels, indicating reduced ovarian reserve. Notably, the effects of O3 exposure on ovarian reserve were different from those of PM2.5 exposure.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Tingting Ma, Yanjuan Ding, Fengjiao Xu, Chen Zhang, Min Zhou, Ya Tang, Yanrong Chen, Yating Wen, Rufei Chen, Bin Tang, Shigui Wang
Summary: The dragonfly species Orthetrum albistylum can accumulate heavy metals, and its heat shock protein genes have the potential to serve as biomarkers for monitoring environmental pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Naoto Ishiwaka, Koya Hashimoto, Masayoshi K. Hiraiwa, Francisco Sanchez-Bayo, Taku Kadoya, Daisuke Hayasaka
Summary: Systemic insecticides and rising temperatures have combined effects on the abundance of Odonata nymphs in paddy fields. The standalone effect of insecticide exposure decreased the Odonata community, while nymphs decreased synergistically with temperature rise in paddy water. However, the impacts of each stressor alone varied among species.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Marco Vecchiato, Carlo Barbante, Elena Barbaro, Francois Burgay, Warren R. L. Cairns, Alice Callegaro, David Cappelletti, Federico Dallo, Marianna D'Amico, Matteo Feltracco, Jean-Charles Gallet, Andrea Gambaro, Catherine Larose, Niccolo Maffezzoli, Mauro Mazzola, Ivan Sartorato, Federico Scoto, Clara Turetta, Massimiliano Varde, Zhiyong Xie, Andrea Spolaor
Summary: The Arctic region is facing contamination from long-range pollution and local human activities. Polycyclic Aromatic Hydrocarbons (PAHs) are used as environmental indicators for emission, transport, and deposition processes. Research conducted in the Arctic surface snow in Ny-Ålesund, Svalbard from October 2018 to May 2019 shows that long-range inputs of PAHs mainly occur in winter, while the most abundant analyte retene exhibits opposite seasonal trends.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Maoshui Zhuo, Zhijie Chen, Xiaoqing Liu, Wei Wei, Yansong Shen, Bing-Jie Ni
Summary: This paper discusses the application of three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) in the management of microplastic pollution, and introduces the efficiency and catalytic mechanisms of different catalysts. It also proposes the development prospects for sustainable management of microplastic pollution.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Shiyu Chen, Zhenzhen Shi, Qiang Zhang
Summary: In this study, a human physiologically based pharmacokinetic (PBPK) model of diethyl phthalate (DEP) was developed to assess its toxicity. The model considers the distribution and metabolism of DEP and its active metabolite monoethyl phthalate (MEP) in different tissue compartments. Sensitivity analysis and Bayesian Markov chain Monte Carlo (MCMC) simulations were performed to evaluate the uncertainty and variability of the model parameters. The results suggest that dermal absorption is an important route of exposure to DEP in the environment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Bangguo Wang, Lijing Wang, Wenxi Cen, Tao Lyu, Peter Jarvis, Yang Zhang, Yuanxun Zhang, Yinghui Han, Lei Wang, Gang Pan, Kaili Zhang, Wei Fan
Summary: This study investigates the feasibility and mechanisms of a chemical-free nanobubble-based AOP for treating organic micropollutants in water. The results show that the oxygen nanobubble AOP has a significantly higher removal efficiency compared to air and nitrogen nanobubbles. The treatment performance is not affected by pH and the presence of ions. Higher initial concentrations of the micropollutant lead to slower treatment processes, but similar removal performance is achieved in the end. The presence of organic matter reduces the removal rate of the micropollutant. The results have practical feasibility for water and wastewater treatment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yingmei Huang, Jicai Yi, Yao Huang, Songxiong Zhong, Bin Zhao, Jing Zhou, Yuxuan Wang, Yiwen Zhu, Yanhong Du, Fangbai Li
Summary: This study investigates the impact of biochar on methylmercury (MeHg) accumulation in rice. The results show that biochar reduces MeHg levels in paddy soils by decreasing bioavailable Hg and microbial Hg methylation. Additionally, biochar decreases the uptake and translocation of MeHg in rice plants, resulting in a reduction of MeHg accumulation in rice grains.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Nengde Zeng, Fei Huang, Jiani Du, Chenghao Huang, Qian Yang, Xinhua Zhan, Baoshan Xing
Summary: This study investigates the protein targets and protein-ligand interactions related to PAH contamination in crop xylem sap using computational tools. The results show that phenanthrene has a more pronounced effect on the xylem sap proteins of maize and wheat, with maize DEPs associated with lipid biosynthesis and wheat DEPs exhibiting an increase in ABC transporters. This study provides insights into the regulation and movement of PAHs within plant xylem.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinwei Chen, Hao Ma, Run Wang, Man Wang, Binbin Zhu, Yanqing Cong, Xiayue Zhu, Guoqin Wang, Yi Zhang
Summary: Co3O4/TiO2-NRs electrodes with excellent photoresponse were prepared via plasma-assisted modification of Co3O4 on TiO2. The combination of Co3O4 and TiO2 improved the light utilization efficiency and showed potential for degradation of pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Wenjing Ji, Liying Song, Jing Wang, Hongqing Song
Summary: This study conducted a life-cycle assessment to examine the correlation between natural gas consumption and carbon emissions in different end uses in China. The results showed that both natural gas consumption and life-cycle carbon emissions have been increasing since 2017. Significant variations in NG life-cycle carbon emissions were found across different provinces and sectors, highlighting the need for targeted efforts to reduce carbon emissions.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Youyi Chen, Boxuan Zhang, Pojun Zhang, Guogui Shi, Hao Liang, Wu Cai, Jingyu Gao, Sumin Zhuang, Kaiyin Luo, Jiaqi Zhu, Chaoxiang Chen, Kunyu Ma, Jinrong Chen, Chun Hu, Xueci Xing
Summary: The synergistic effects of trace sulfadiazine and cast-iron corrosion scales on the formation of disinfection by-products in drinking water distribution systems were investigated. The presence of magnetite resulted in increased concentrations of DBPs due to the higher microbial activity and enhanced microbial extracellular electron transport pathway. The study highlights the importance of considering trace antibiotics pollution and corrosion scales in water sources for DBP control.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Bishwa Raj Pokharel, Vijay Sheri, Manoj Kumar, Zhiyong Zhang, Baohong Zhang
Summary: This review summarizes the interactions, uptake, and transport of aluminum nanoparticles (Al-NPs) in plants, highlighting their negative effects on plant growth and development, as well as their potential to alter plant defense systems and gene expression.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yonglu Wang, Fengsong Zhang, Xiaoyong Liao, Xiao Yang, Guixiang Zhang, Liyun Zhang, Chaojun Wei, Pengge Shi, Jiongxin Wen, Xiaorong Ju, Can Xu, Yang Liu, Ying Lan
Summary: This study aims to explore the effects of thiencarbazone-methyl center dot isoxaflutole on soil microflora and the potential mitigation mechanisms to bacterial communities. It was found that increasing the application of thiencarbazone-methyl center dot isoxaflutole resulted in increased stress on soil bacterial community structure and diversity. Increasing soil pH was recognized as a key factor in improving the diversity and structure of soil microflora. Supplemental use of nitrapyrin or modified attapulgite can increase soil pH and improve bacterial diversity.
ENVIRONMENTAL POLLUTION
(2024)
