Article
Genetics & Heredity
Manuel A. Merlo, Silvia Portela-Bens, Maria E. Rodriguez, Aglaya Garcia-Angulo, Ismael Cross, Alberto Arias-Perez, Emilio Garcia, Laureana Rebordinos
Summary: The high-density genome mapping of Solea senegalensis revealed important characteristics of its genome organization and evolution, such as a possible sex proto-chromosome pair and conserved chromosomes with linked genes in distant species. These findings provide valuable insights into the chromosome dynamics and evolution of this species.
Article
Environmental Sciences
Mario J. Araujo, Carla Quintaneiro, Amadeu M. V. M. Soares, Marta S. Monteiro
Summary: The study found that exposure of flatfish early life stages to ultraviolet radiation led to adverse effects such as decreased growth, impaired behavior, and inhibition of neurotransmitters and biotransformation. In the metamorphosis stage, the main observed effect was a decrease in growth. This suggests that UV exposure may have implications in later life stages.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Toxicology
Maria Gemma Albendin, Vanessa Aranda, Alejandro Corrales, Juan Bosco Ortiz-Delgado, Carmen Sarasquete, Juana Maria Arellano
Summary: Genistein and daidzein, isoflavones found in legumes, may be present in wastewater effluents and affect fish in the aquatic environment. This study evaluated the effects of these isoflavones on juveniles of Solea senegalensis and Solea solea and found that they did not inhibit the activity of acetylcholinesterase at the tested concentrations.
JOURNAL OF APPLIED TOXICOLOGY
(2023)
Article
Environmental Sciences
Helena Oliveira, Ana Luisa Maulvault, Sara Castanho, Tiago Repolho, Luisa M. P. Valente, Pedro Pousao-Ferreira, Rui Rosa, Antonio Marques, Patricia Anacleto
Summary: Rising levels of atmospheric CO2 are causing ocean warming and acidification, which have potential negative effects on commercially important fish species. This study examined the effects of ocean acidification (OA) and warming (OW), both individually and combined, on the composition, fitness, and energy budget of juvenile Senegalese sole. The results showed that acidification and warming did not significantly impact the proximate composition and gross energy of the fish. However, OA, OW, and OAW treatments resulted in higher growth rates, metabolic rates, and energy intake compared to control conditions. The study highlights the physiological responses of juvenile Senegalese sole to ocean warming and acidification, emphasizing the importance of understanding the impact of climate change on fisheries.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Marian Ponce, Eugenia Zuasti, Elena Reales, Victoria Anguis, Catalina Fern
Summary: Infectious diseases are a major cause of social and economic losses in world aquaculture, with bacterial diseases such as photobacteriosis impacting the production of Senegalese sole. This study aimed to develop an oral DNA nanovaccine for S. senegalensis juveniles against Photobacterium damselae subsp. piscicida (Phdp). The results indicate that oral vaccination with CS-TPP+pPDPimpdh NPs may be acting through non-specific immune responses as well as specific humoral and cell mediated immunity, providing a promising step towards developing an oral DNA nanovaccine against Phdp in sole.
FISH & SHELLFISH IMMUNOLOGY
(2021)
Article
Environmental Sciences
Maria D. Pavlaki, Rui G. Morgado, Violeta Ferreira, Rui J. M. Rocha, Amadeu M. V. M. Soares, Ricardo Calado, Susana Loureiro
Summary: The study found that cadmium accumulation in different tissues of Solea senegalensis followed the order of muscle, gills, liver, and intestine when exposed to cadmium-contaminated diet and water. After 14 days of uptake, muscle showed lower cadmium accumulation, with the intestine having the highest uptake flux. Cadmium depuration from the liver was not detected, indicating a possible storage compartment for cadmium in Solea senegalensis.
Article
Environmental Sciences
Neda Gilannejad, Francisco J. Moyano, Gonzalo Martinez-Rodriguez, Manuel Yufera
Summary: Understanding the daily digestive function is crucial for efficient feeding practices in farmed fish species. Higher feeding frequencies, especially during dark hours, were found to be more suitable for aquaculture production of the Senegalese sole.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Ignacio Martin, Marta F. Riesco, Elena Chaves-Pozo, Cristina Rodriguez, Juan Manuel Martinez-Vazquez, Vanesa Robles, Olvido Chereguini, Inmaculada Rasines
Summary: The study evaluated the effect of long-term natural feeding on the reproductive status of 4-year-old Solea senegalensis, finding that natural feeding improved sperm quality and quantity, and enhanced the proportion of both male and female fish in advanced maturity stages.
Article
Environmental Sciences
Ligia M. B. M. Santana, Andreia C. M. Rodrigues, Diana Campos, Olga Kaczerewska, Joana Figueiredo, Sara Silva, Isabel Sousa, Frederico Maia, Joao Tedim, Denis M. S. Abessa, Pedro Pousao-Ferreira, Ana Candeias-Mendes, Florbela Soares, Sara Castanho, Amadeu M. V. M. Soares, Rui J. M. Rocha, Carlos Gravato, Ana L. Patricio Silva, Roberto Martins
Summary: The study found that there were minimal amounts of polyethylene particles entering the gut of Solea senegalensis larvae even at relatively high concentrations when exposed to a combination of PE and Cu-Al LDH nanomaterial. Effects on fish health were limited, with gut deformities and other biochemical effects observed only at concentrations of PE >= 1.0 mg.L-1.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Mario J. Araujo, Amadeu M. V. M. Soares, Marta S. Monteiro
Summary: Exposure to 4-MBC during metamorphosis accelerated metamorphosis progression and induced adverse effects in S. senegalensis, such as reduced length, inhibited CAT activity, and oxidative damage. These effects persisted even after 9 days in a clean medium, suggesting potential long-term impacts on growth and metamorphic progression in this species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
Joao Afonso, Cristina Guedes, Alfredo Teixeira, Paulo Rema, Severiano Silva
Summary: The ultrasound approach can accurately predict the fillet volume of Senegalese sole, showing promise for measuring in vivo fish composition traits. However, the results for fillet yield estimation were more modest, indicating the need for further studies to fully understand the potential of ultrasound in this trait.
Article
Biochemistry & Molecular Biology
Daniel Ramirez, Maria Esther Rodriguez, Ismael Cross, Alberto Arias-Perez, Manuel Alejandro Merlo, Marco Anaya, Silvia Portela-Bens, Paulino Martinez, Francisca Robles, Carmelo Ruiz-Rejon, Laureana Rebordinos
Summary: The chromosome evolution of Solea senegalensis, a commercially-important flatfish species, was studied using a cytogenomics approach and synteny analysis with two reference flatfish species. It was found that repetitive sequences played a role in the evolution of bi-armed and acrocentric chromosomes, with differences in distribution and abundance of repetitive elements suggesting their involvement in remodeling processes during evolution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Marine & Freshwater Biology
Marcelino Herrera, Ana Rodiles, Natalia Salamanca, Jose Ignacio Navas, Maria Luisa Cordero, Ismael Hachero
Summary: This study aims to describe and analyze the results of the first flatfish stock enhancements in Andalusia. The results show that it is possible to release and recover tagged Senegal soles in the Gulf of Cadiz, and future long-term enhancement programs could help recover fisheries stocks.
Article
Fisheries
Diana Bastos Almeida, Catarina Magalhaes, Zelia Sousa, Maria Teresa Borges, Eliane Silva, Isidro Blanquet, Ana Paula Mucha
Summary: Recirculating aquaculture systems (RAS) manage waste and nutrient recycling to make intensive fish production environmentally sustainable. This study investigated the dynamics of prokaryotic communities in relation to water parameters, finding that shifts in the community were modeled by factors such as salinity and pH. The research provides new knowledge essential for understanding microbial community balance in aquaculture and serves as a valuable tool for overall aquaculture system management.
Article
Environmental Sciences
M. J. Araujo, C. Quintaneiro, R. J. M. Rocha, P. Pousao-Ferreira, A. Candeias-Mendes, A. M. V. M. Soares, M. S. Monteiro
Summary: This study investigated the effects of ultraviolet radiation (UV) and triclosan (TCS) on the metamorphosis of Solea senegalensis, and found that TCS induced malformations, accelerated and delayed metamorphosis, while UV radiation enhanced these effects. The expression of thyroid axis-related genes were down-regulated after TCS exposure and remained down-regulated even after a period in clean media. These stressors may have implications for the ecological performance of the species.
Article
Fisheries
Lucas Pedro Goncalves Junior, Angelica da Silva Ferreira, Isabela F. Araujo Torres, Walisson de Souza E. Silva, Leandro Santos Costa, Jose F. Lopez-Olmeda, Natalia C. S. Costa, Paula A. P. Ribeiro, Deliane Cristina Costa, Ronald Kennedy Luz
Summary: This study aimed to evaluate the effects of different feeding frequencies on the performance, hematology profile, daily rhythms of glucose, and activities of digestive enzymes in juvenile Lophiosilurus alexandri. The results showed that feeding frequency did not significantly affect survival, weight, or weight gain. However, it did influence hematology profile, daily rhythms of glucose, and activities of digestive enzymes. Juvenile L. alexandri can be successfully produced with a feeding frequency of twice a day.
JOURNAL OF APPLIED AQUACULTURE
(2023)
Article
Fisheries
Camila Gomes de Oliveira, Jose Fernando Lopez-Olmeda, Leandro Santos Costa, Amanda Hastenreiter do Espirito Santo, Fabio Aremil Costa dos Santos, Ronald Kennedy Luz, Paula Adriane Perez Ribeiro
Summary: This study evaluated the gastrointestinal digestion patterns of Nile tilapia through examining stomach weight, enzyme activity, and daily rhythm of protein digestion. The study found that food passage in the gastrointestinal tract influences protein hydrolysis and correlates with proteolytic enzyme activity over a 20-hour period. Additionally, there is rhythmicity in the activities of acid protease, trypsin, and chymotrypsin, with distinct acrophases located throughout the light phase.
Article
Physiology
Laura Gabriela Nisembaum, Guillaume Loentgen, Thibaut L'Honore, Patrick Martin, Charles-Hubert Paulin, Michael Fuentes, Karine Escoubeyrou, Maria Jesus Delgado, Laurence Besseau, Jack Falcon
Summary: Fish rely on external temperature and photoperiod to regulate their metabolism, physiology, and behavior. Recent studies have found that TRPV1 and TRPV4 channels play a role in regulating melatonin production in Atlantic salmon, possibly in response to temperature changes.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Zoology
Gonzalo de Alba, Sherezade Carrillo, Francisco Javier Sanchez-Vazquez, Jose Fernando Lopez-Olmeda
Summary: This study investigates the combined effects of temperature and light wavelength on Danio rerio embryos and larvae. It finds that blue light wavelength and cyclic temperature regimes closer to the natural environment result in the best performance of the fish larvae.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART A-ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Nuria Saiz, Lisbeth Herrera-Castillo, Esther Isorna, Maria Jesus Delgado, Marta Conde-Sieira, Jose Luis Soengas, Nuria de Pedro
Summary: This study demonstrates, for the first time in fish, the effects of REV-ERB alpha activation via SR9009, promoting a negative energy balance by reducing energetic inputs and regulating lipid and glucose metabolism.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
A. Carvalhais, I. B. Oliveira, H. Oliveira, C. C. Oliveira, L. Ferrao, E. Cabrita, J. F. Asturiano, S. Guilherme, M. Pacheco, C. L. Mieiro
Summary: This study evaluated the impact of environmentally relevant and supra environmental concentrations of titanium dioxide (TiO2) and silver nanoparticles (Ag) on the sperm of gilthead seabream. The results showed that there were no significant changes in sperm motility, head morphometry, mitochondrial function, and DNA integrity, except for supra environmental concentration of Ag nanoparticles. However, exposure to TiO2 nanoparticles led to depletion of antioxidants, while exposure to Ag nanoparticles resulted in decreased SOD. These findings suggest that TiO2 and Ag nanoparticles induce low levels of spermiotoxicity without proven relevant ecological impacts.
MARINE POLLUTION BULLETIN
(2022)
Article
Fisheries
Leandro S. Costa, Helder O. Guilherme, Raphael N. Bahiense, Fabio A. C. Santos, Pedro G. Gamarano, Jose F. L. Olmeda, Paula A. P. Ribeiro, Ronald K. Luz
Summary: Two experiments were conducted to investigate the influence of protein concentration on Nile tilapia. The results indicate that tilapia can adjust their protein intake and choose the diet that best meets their nutritional needs.
Article
Fisheries
Bruno Olivetti de Mattos, Elcimar da Silva Sousa, William Alemao Saboia, Thiago Macedo Santana, Maria Angelica de Almeida Correa, Francisco Javier Sanchez-Vazquez, Rodrigo Fortes-Silva
Summary: This study evaluated the effects of different feeding strategies on the growth, body composition, hematological and biochemical parameters, excretion patterns, and economic indices of juvenile tambaqui. The results showed that the self-feeder system and apparent satiety feeding strategy had positive effects on feed intake, conversion ratio, protein efficiency ratio, and protein retention rate. However, there were no significant differences observed in growth, survival, hematological parameters, body composition, and total ammonia nitrogen excretion among the different feeding strategies. The study also found that the self-feeder system and apparent satiety feeding strategy had better economic indices.
AQUACULTURE RESEARCH
(2022)
Article
Fisheries
Ana Caroliny Cerdeira Lopes, Jhomaxon de Souza Goncalves, Bruno Olivetti de Mattos, Jaydione Luiz Marcon, Francisco Javier Sanchez-Vazquez, Gonzalo de Alba, Thais Billalba Carvalho
Summary: This study evaluated the effect of the light-dark cycle on energy expenditure indicators for two species of Amazonian fish. The results show that certain hematological parameters exhibit daily rhythms, which may be related to the greater energy demand during the day for these species.
AQUACULTURE RESEARCH
(2022)
Article
Biology
Costanza Guidi, M. Angeles Esteban, Francisco J. Sanchez-Vazquez, Luisa M. Vera
Summary: This study investigated the day/night differences in the immune response of zebrafish to the immunostimulant poly (I:C). The results showed that zebrafish exhibited a stronger response to poly (I:C) during the day compared to at night. Tissue-specific differences were also observed in the response to poly (I:C) administration.
CHRONOBIOLOGY INTERNATIONAL
(2022)
Article
Physiology
Miguel Gomez-Boronat, Nuria De Pedro, angel L. Alonso-Gomez, Maria J. Delgado, Esther Isorna
Summary: The circadian system, composed of oscillators in central and peripheral tissues, regulates rhythmic processes in vertebrates. Nuclear receptors PPARs, REV-ERBs, and RORs have been proposed as key genes linking metabolism and temporal homeostasis. This study investigated the effects of light-dark cycle and feeding time on the synchronization of central and peripheral clocks and nuclear receptors in goldfish. The results showed that the hypothalamus is mainly light-entrained, while the liver is food-entrained. Nuclear receptors are identified as key elements in the timekeeping of temporal homeostasis, particularly in the liver.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Ignacio Ruiz-Jarabo, Blanca Partida, Maria Page, Diego Madera, Nuria Saiz, Aitana Alonso-Gomez, Lisbeth Herrera-Castillo, Esther Isorna, Angel L. Alonso-Gomez, Ana I. Valenciano, Nuria de Pedro, Jorge Saez, Maria J. Delgado
Summary: Artisanal fishing is prevalent worldwide, but changes in fishing legislation can have detrimental effects if not adapted to quickly. This study proposes potential improvements for the sector through a pilot study, evaluating the survival and possible recapture of discarded fish. The findings provide a foundation for regulating artisanal fisheries by offering scientific data on discard survival rates and sale prices.
Article
Agriculture, Dairy & Animal Science
Aitana Alonso-Gomez, Diego Madera, Angel Luis Alonso-Gomez, Ana Isabel Valenciano, Maria Jesus Delgado
Summary: This study investigates the daily variations in the expression of insulin-like growth factor-1 (IGF-1) system components in the liver of goldfish and the influence of environmental cues and feeding time on this rhythmicity. The results show that both environmental cues and feeding time synchronize the daily rhythms of the components of the IGF-1 system in the liver. This highlights the importance of IGF-1 and its binding proteins as potential rhythmic outputs of the liver clock in fish.
Article
Marine & Freshwater Biology
Isabel B. Oliveira, Ana Carvalhais, Sofia Guilherme, Helena Oliveira, Catarina C. V. Oliveira, Leonor Ferrao, Elsa Cabrita, Mario Pecheco, Claudia Mieiro
Summary: Studies have shown that titanium dioxide nanoparticles (TiO2 NP) have reproductive toxicity to humans and fish, but their effects on marine bivalves, specifically oysters, are still unknown. In this study, Pacific oyster sperm was directly exposed to two concentrations of TiO2 NP (1 and 10 mg/L) for a short term (1 h), and sperm motility, antioxidant responses, and DNA integrity were assessed. Although no changes were observed in sperm motility and antioxidant activities, the indicator of genetic damage increased at both concentrations, indicating that TiO2 NP affects the DNA integrity of oyster sperm. This vulnerability of Pacific oyster sperm to TiO2 NP highlights the importance of studying the effects of NP exposure on broadcast spawners.
AQUATIC TOXICOLOGY
(2023)
Article
Fisheries
Francisca Felix, Victor Gallego, Ana Mendes, Florbela Soares, Luisa M. Vera, Elsa Cabrita, Catarina C. V. Oliveira
Summary: The study aimed to determine melatonin levels in the seminal plasma of three aquaculture fish species and explore its potential role in fish reproduction and spermatozoa antioxidant status. Blood and seminal plasma were collected from fish during their reproductive season, and melatonin concentration was determined by radioimmunoassay. The results showed species-specific and daily changes of melatonin in fish seminal plasma.