Article
Marine & Freshwater Biology
Hugo Jacob, Marc Besson, Francois Oberhaensli, Angus Taylor, Benjamin Gillet, Sandrine Hughes, Steven D. Melvin, Paco Bustamante, Peter W. Swarzenski, David Lecchini, Marc Metian
Summary: This study comprehensively analyzed the biological responses of a marine fish species, gilthead seabream, to exposure to microplastics. The findings suggest that microplastic ingestion can have varying effects on fish, from negligible to profound impacts, contributing to a better understanding of the causal mechanisms of its toxicity.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
Bonsignore Maria, Messina Concetta Maria, Bellante Antonio, Manuguerra Simona, Arena Rosaria, Santulli Andrea, Maricchiolo Giulia, Del Core Marianna, Sprovieri Mario
Summary: Specimens of Sparus aurata were exposed to sub-lethal concentrations of Hg and Cd for 25 days. Bioaccumulation of Hg was highest in gills, while Cd bioaccumulation was highest in the liver. Gills and skin were reliable targets for biomonitoring after short-term exposure. Exposure to both metals caused significant increases in metal concentrations in the kidney and liver. Biochemical analysis showed a reduction in lipid levels and decrease in polyunsaturated fatty acids (PUFA) in the liver, indicating oxidative stress. Molecular markers related to oxidative stress and lipid metabolism were also affected by exposure. The study suggests the possibility of using these biomarkers to explore fish metabolic responses to environmental pollution.
Article
Fisheries
Carme Alomar, Montserrat Compa, Marina Sanz-Martin, Valentina Fagiano, Elvira Alvarez, Jose Maria Valencia, Salud Deudero
Summary: Due to the rise in aquaculture production, the use of Integrated Multi-Trophic Aquaculture Systems (IMTA) is increasing to mitigate environmental impacts. However, these systems result in the release of plastic materials into the marine environment, which can be ingested by reared species. This study evaluated plastic ingestion in edible species from sea-based experimental aquaculture facilities and observed plastic loads in the surrounding surface waters.
Article
Fisheries
Dimitra Kogiannou, Chrysanthi Nikoloudaki, Vasilia Valsamidi, Mado Kotsiri, Eleni Golomazou, George Rigos
Summary: The pharmacokinetics of orally administered praziquantel (PZQ) were studied in gilthead seabream, with rapid absorption and higher drug levels observed in both plasma and gills with the high dose regimen. However, the elimination rate of PZQ from fish tissues was fast.
Article
Environmental Sciences
Ioannis Konstantinidis, Joana P. Firmino, Alberto Ruiz, Bruno Inarra, David San Martin, Alicia Estevez, Jorge M. O. Fernandes, Enric Gisbert
Summary: This study evaluated the replacement of dietary protein sources with Brewer's spent dry yeast (SDY) in gilthead sea bream and found that SDY had a modulatory effect on the host's immunity, oxygen carrier capacity, steroidogenesis, metabolism, and digestion. The results indicate that SDY can be considered as both a sustainable raw material and a functional ingredient.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biodiversity Conservation
Esther Blanco-Rayon, Haizea Ziarrusta, Leire Mijangos, Maitane Olivares, Olatz Zuloaga, Nestor Etxebarria, Urtzi Izagirre
Summary: The study found that exposure to Amitriptyline at environmentally-relevant concentrations significantly impacts biological responses in marine teleosts, especially in lysosomal biomarkers. Further research is needed to understand the effects of Amitriptyline and other pharmaceuticals on biomarkers in non-target species, to increase knowledge about the toxicity of these emerging pollutants.
ECOLOGICAL INDICATORS
(2021)
Article
Chemistry, Applied
Gulce Bedis Kaynarca, Tuncay Gumus, Deniz Damla Altan Kamer
Summary: In this study, fish skin gelatin was evaluated as an alternative to mammalian gelatin, with attempts to improve its rheological properties by adding grape pomace, pomegranate peel, and green tea extracts. The addition of 20% grape pomace resulted in fish gelatin with optimal rheological properties, making it a potential alternative to mammalian gelatin in the confectionery industry.
Article
Environmental Sciences
Igor Talijancic, Iva Zuzul, Viktorija Kiridzija, Jasna Siljic, Jelka Pleadin, Leon Grubisic, Tanja Segvic-Bubic
Summary: Fish farms have a high attractivity to wild fish, and the influence of tuna farming on plastic traits of gilthead seabream remains largely unknown. The study found significant differences in habitat selection and foraging behavior between farm-associated seabream and wild or farmed seabream, highlighting the existence of resource polymorphism in gilthead seabream.
FRONTIERS IN MARINE SCIENCE
(2021)
Review
Fisheries
Nunziatina Porcino, Lucrezia Genovese
Summary: This review provides a global overview of alternatives to fish meal and fish oil in aquaculture feeds for gilthead sea bream, with a focus on gut health. The collected information may serve as a tool for fine-tuning new diets for gilthead sea bream.
AQUACULTURE RESEARCH
(2022)
Article
Fisheries
Jose Carlos A. Campos-Sanchez, Francisco A. Guardiola, Mara Angeles Esteban
Summary: This study investigated the effects of cantharidin on the inflammatory response in gilthead seabream head-kidney leucocytes (HKLs). The results showed that cantharidin induced apoptosis in HKLs, decreased respiratory burst and phagocytic activities, and increased peroxidase activity. Furthermore, cantharidin also affected the expression of different genes in HKLs.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Antonia M. Jimenez-Monreal, Francisco A. Guardiola, M. Angeles Esteban, M. Antonia Murcia Tomas, Magdalena Martinez-Tome
Summary: This study investigated the effect of dietary supplementation with Moringa leaves on the antioxidant activity of gilthead seabream, concluding that higher percentages of Moringa led to increased antioxidant activity in the fish. The antioxidant potential of Moringa leaves was mainly attributed to the presence of polyphenolic compounds.
Article
Fisheries
Sara Puchol, Esther Leal, Rita Angotzi, Jesus Rosel, Sofia Morais, Jose Miguel Cerda-Reverter
Summary: This study used self-feeding systems to investigate feeding behavior and dietary discrimination in seabream. The results showed that seabream can easily discriminate bitter compounds and display negative preference towards them. Additionally, the study found that food intake is influenced by agonistic behavior and age.
Article
Agriculture, Dairy & Animal Science
Lourenco Ramos-Pinto, Marina Machado, Josep Calduch-Giner, Jaume Perez-Sanchez, Jorge Dias, Luis E. C. Conceicao, Tome S. Silva, Benjamin Costas
Summary: The study aimed to evaluate the effects of histidine, taurine, and threonine supplementation on the immune status of gilthead seabream. The results showed that dietary supplementation with these amino acids had mild immune-modulation effects on gilthead seabream, particularly noteworthy for further study under disease challenge conditions.
Article
Physiology
Andre Barany, Milagrosa Oliva, Silvia Filipa Gregorio, Gonzalo Martinez-Rodriguez, Juan Miguel Mancera, Juan Fuentes
Summary: This study investigated the physiological effects of Aflatoxin B1 (AFB1) on the gastrointestinal system of seabream through in vitro and in vivo experiments, as well as molecular analysis. Results showed dose-related effects on ion transport, changes in Na+/K+-ATPase and H+-ATPase activities, and alterations in intestinal barrier proteins expression. These findings suggest that AFB1 may be the underlying cause of growth impairment in fish reported previously.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Public, Environmental & Occupational Health
K. L. Akerlof, Jacqueline Loevenich, Sara Melena, Christine A. Lipsky
Summary: This study categorizes visitors at coastal parks in Hawaii and North Carolina and identifies four different types of visitors based on their behavioral profiles. It also reveals the threat of sunscreen chemical pollution to aquatic ecosystems. Among them, the group of tourists who use sunscreen without awareness of its chemical impact is of the greatest concern. The findings suggest the robustness of the model in different regions and emphasize the importance of addressing environmental protection and public health issues.
Article
Biodiversity Conservation
Joan Moranta, Cati Torres, Ivan Murray, Manuel Hidalgo, Hilmar Hinz, Adam Gouraguine
Summary: The unlimited economic growth associated with capitalism has resulted in significant environmental destruction and biodiversity loss, highlighting the need to address the contradictions between economic growth and biodiversity conservation. Global agendas related to sustainable development have been established since the 1970s, but only in the early 2000s did biodiversity loss become a major focus for environmental researchers. The current global biodiversity agendas, however, do not fully acknowledge the negative impacts of growth-oriented strategies on biodiversity, emphasizing the economic value of biodiversity over its intrinsic importance for ecosystems and human well-being.
CONSERVATION BIOLOGY
(2022)
Article
Environmental Sciences
Marta Bolgan, Lucia Di Iorio, Thanos Dailianis, Ignacio A. Catalan, Pierre Lejeune, Marta Picciulin, Eric Parmentier
Summary: This study investigates the structure, organization, and variability of fish acoustic communities in Posidonia oceanica seagrass beds. The results show that there are differences in acoustic diversity and species-specific sound features between different locations. Fish species in communities with higher acoustic richness specialize in their use of acoustic resources, while the overall allocation of resources within the community signal space expands.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2022)
Article
Fisheries
Miquel Palmer, Amaya Alvarez-Ellacuria, Vicenc Molto, Ignacio A. Catalan
Summary: The use of deep convolutional networks and statistical models in automatically estimating the number and mean length of fish caught in fisheries shows promise in improving the accuracy and efficiency of stock assessment and management, allowing for high-resolution monitoring of fishery dynamics.
FISHERIES RESEARCH
(2022)
Article
Fisheries
Vicenc Molto, Ignacio A. Catalan, Andres Ospina-Alvarez, Pilar Hernandez, Ruben H. Roa-Ureta
Summary: Generalized depletion models are useful for managing data-limited fisheries and have been applied to the Mediterranean common dolphinfish fishery. A multiannual five-fleet model was developed using monthly data from 2008 to 2019. The results show high natural mortality rate and intra-season fluctuations in biomass, but indicate that the stock is fished within sustainable limits.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Ecology
Silvia de Juan, Julie Bremner, Judi Hewitt, Anna Tornroos, Maria Cristina Mangano, Simon Thrush, Hilmar Hinz
Summary: Biological traits analysis (BTA) is a popular approach in marine benthic studies that links community structure to ecological functions and environmental drivers. However, there are current shortcomings and limitations including uncertainties in data origins, lack of standardized reporting of trait information, knowledge gaps on the role of multiple interacting traits, weak understanding of mechanistic links between traits and functions, limited focus on spatial and temporal variability, and reliance on expert knowledge. To reach its full potential, BTA requires standardized reporting and storage of traits data, filling knowledge gaps on mechanistic links, adoption of new technological advances, and advanced statistical approaches.
ECOLOGY AND EVOLUTION
(2022)
Article
Fisheries
Andres Ospina-Alvarez, Sebastian I. Vasquez, Ignacio A. Catalan, Susan Lowerre-Barbieri, Marcos Arteaga, Silvia de Juan
Summary: Efforts to manage small and medium-sized pelagic fishes (SMPF) using traditional stock assessment methods are hindered by the unclear relationship between spawning stock biomass and recruitment. This study proposes a reproductive resilience index (RRI) and applies a Bayesian Belief Network (BBN) model to explore the environmental effects on species' RRI. By demonstrating the variability in species' resilience through RRI in local time series, the importance of RRI for improving SMPF management is highlighted.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Fisheries
Beatriz Morales-Nin, Silvia Perez-Mayol, Kirsteen MacKenzie, Ignacio A. Catalan, Miquel Palmer, Thibault Kersaudy, Kelig Mahe
Summary: The European hake is a valuable species in the North-East Atlantic and the Mediterranean fisheries. However, careful management is needed as it has been rated as overexploited in the Mediterranean. This study assessed the discrimination capability of otolith shape and microchemistry in distinguishing different sub-populations of Mediterranean hake. The results showed significant between-unit differences, but overall discrimination capability was poor, indicating a continuous gradient rather than distinct spatial units.
FISHERIES RESEARCH
(2022)
Article
Multidisciplinary Sciences
Eduardo Ramirez-Romero, Angel Amores, David Diaz, Anabel Munoz, Ignacio A. Catalan, Juan Carlos Molinero, Andres Ospina-Alvarez
Summary: This study reveals the underlying mechanisms of long pelagic dispersal phase (LPDP) patterns of jellyfish and spiny lobsters in the northwestern Mediterranean shores. The researchers identified prevailing dispersal routes and synchronic year-to-year patterns, which are closely linked to circulation features of marginal seas and semienclosed basins. They also found that atmospheric forcing modulates LPDP routes and sources at interannual scales. These findings advance our understanding of species with LPDP in marginal seas and contribute to the management of coastal ecosystem services in the face of climate change.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Ignacio A. Catalan, Amaya Alvarez-Ellacuria, Jose-Luis Lisani, Josep Sanchez, Guillermo Vizoso, Antoni Enric Heinrichs-Maquilon, Hilmar Hinz, Josep Alos, Marco Signarioli, Jacopo Aguzzi, Marco Francescangeli, Miquel Palmer
Summary: Further investigation is required to enhance the identification and classification of fish in underwater images using artificial intelligence, especially deep learning. Several questions need to be explored, including the significance of diverse backgrounds, the impact of labeling small fish on precision, the quantity of images needed for successful classification, and the selection process for these images. To address these inquiries, a new labeled dataset consisting of over 18,400 Mediterranean fish from 20 species recorded in more than 1,600 underwater images with varying backgrounds was created. Two state-of-the-art object detectors/classifiers, YOLOv5m and Faster RCNN, were compared, with YOLOv5m outperforming and being selected for classifying an increasing number of species. The results and dataset provide valuable insights into improving the use of deep learning for studying underwater organisms.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Ane Pastor, Ignacio A. Catalan, Jorge Terrados, Baptiste Mourre, Andres Ospina-Alvarez
Summary: Marine population connectivity is crucial for biodiversity and resource management. This study investigates the dispersal of the seagrass species Posidonia oceanica in the Balearic Islands and highlights the value of dispersal modeling and network analysis in conservation planning.
BIOLOGICAL CONSERVATION
(2023)
Article
Fisheries
Dominique Robert, Jun Shoji, Pascal Sirois, Akinori Takasuka, Ignacio A. Catalan, Arild Folkvord, Stuart A. Ludsin, Myron A. Peck, Su Sponaugle, Patricia M. Ayon, Richard D. Brodeur, Emily Y. Campbell, Evan K. D'Alessandro, John F. Dower, Louis Fortier, Alberto G. Garcia, Klaus B. Huebert, Marc Hufnagl, Shin-ichi Ito, Mikimasa Joh, Francis Juanes, Mitsuo Nyuji, Yoshioki Oozeki, Guido Plaza, Motomitsu Takahashi, Yosuke Tanaka, Naoki Tojo, Shingo Watari, Naotaka Yasue, Pierre Pepin
Summary: Early life survival is crucial for the replenishment of fish populations, and the Growth-Survival Paradigm (GSP) has provided guidance for studying controlling processes. However, analysis of mortality data from published studies showed that the GSP was only supported in 56% of cases, indicating that the growth-survival relationship is more complex than previously thought. Further research is needed to understand the drivers of variability in growth-selective survival and the endpoint of pre-recruited life.
FISH AND FISHERIES
(2023)
Article
Computer Science, Information Systems
Josep S. Sanchez, Jose-Luis Lisani, Ignacio A. Catalan, Amaya Alvarez-Ellacuria
Summary: The use of deep learning techniques in marine science has gained popularity in recent years. This paper proposes a training strategy that combines manual and semi-automatic annotations to reduce the annotation cost for instance segmentation. By using a pretrained encoder-decoder segmentation network to automatically obtain the shape of fish, the time required for expert labeling can be significantly reduced.
Article
Computer Science, Information Systems
Jose-Luis Lisani, Ana-Belen Petro, Catalina Sbert, Amaya Alvarez-Ellacuria, Ignacio A. A. Catalan, Miquel Palmer
Summary: In this paper, seven state-of-the-art UIE techniques are evaluated and ranked according to their utility for image annotation. The study concludes that the model-free Multiscale Retinex algorithm is preferred.
Article
Ecology
Henrike Rambo, Andres Ospina-Alvarez, Ignacio A. Catalan, Francesc Maynou, Vanessa Stelzenmueller
Summary: Worldwide climate change and changing sociopolitical conditions can impact exploited fish stocks and the viability of fisheries. This study uses a Bayesian Belief Network model to assess the impact of future scenarios on the economic profit for dolphinfish fishers in Mallorca. The results show potential for increased profitability with climate-induced changes but highlight the need to consider unknown factors such as changes in other species and market dynamics.
ECOLOGY AND SOCIETY
(2022)
Article
Environmental Sciences
Emily Curren, Sandric Chee Yew Leong
Summary: Microplastics in marine ecosystems serve as microhabitats for diverse toxic plankton species, including viable resting cysts of dinoflagellates. The diversity of plankton communities on the plastisphere is influenced by anthropogenic factors. This study highlights the importance of plastics as vectors for the transport of harmful opportunistic species in the marine environment.
MARINE ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Vladimir G. Dvoretsky, Alexander G. Dvoretsky
Summary: The Barents Sea, as the largest Arctic shelf region, plays a vital role in supporting commercial fisheries. The ecosystem of this region is significantly influenced by both warm Atlantic Water (AW) and cold Arctic Water (ARW), resulting in distinct frontal zones. This study found that copepod populations, particularly herbivorous copepods, were most abundant and productive in the Polar Front, as well as in the eastern frontal zones. The geographic positions of sampling stations, depth, and chlorophyll a concentration were identified as the main factors influencing copepod biomass and production.
MARINE ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Alberto Rovellini, Charlotte L. Mortimer, Matthew R. Dunn, Elizabeth A. Fulton, Jamaluddin Jompa, Abdul Haris, James J. Bell
Summary: This study compared the structural complexity of coral- and sponge-dominated areas of an Indonesian coral reef using 3D photogrammetry. The results showed that smaller-scale refugia were reduced in sponge-dominated reefs, potentially impacting smaller reef fauna.
MARINE ENVIRONMENTAL RESEARCH
(2024)