Article
Fisheries
Mamdouh Y. Elgendy, Shimaa E. Ali, Mohamed Abdelsalam, Tamer H. Abd El-Aziz, Faten Abo-Aziza, Hussien A. Osman, Mohammad M. N. Authman, Wafaa T. Abbas
Summary: The study demonstrated the protective effects of dietary Allium cepa on Saprolegnia parasitica infections and cadmium-induced immunosuppression in tilapia. The inclusion of A. cepa in the diets improved fish growth, immune responses, and reduced oxidative stress and mortality caused by S. parasitica. This research highlights the immunostimulatory properties of A. cepa supplementation and recommends its prophylactic use in controlling saprolegniasis and mitigating cadmium adverse effects.
AQUACULTURE INTERNATIONAL
(2023)
Article
Fisheries
Ehab Misk, Serap Gonen, Amber F. Garber
Summary: This study evaluated the heritability of Saprolegnia resistance and the impact of a scoring system on infected fish. The findings suggest that selecting families with resistance to Saprolegnia can be possible.
JOURNAL OF FISH DISEASES
(2022)
Article
Mycology
Cyril Henard, Marcia R. Saraiva, Magdalena E. Scislak, Tahmina Ruba, Debbie Mclaggan, Patricia Noguera, Pieter VAN West
Summary: Ulcerative dermal necrosis (UDN) is a chronic skin condition that primarily affects mature wild salmonids. The primary cause or pathogen(s) of UDN has not been identified. This opinion article reviews the epidemiology, pathology, and etiology of UDN and suggests a potential role of UV radiation in initiating UDN in salmonid fish returning from the sea.
FUNGAL BIOLOGY REVIEWS
(2022)
Article
Fisheries
Heba H. Mahboub, Adel A. shaheen
Summary: The rapid development of freshwater aquaculture in Egypt has led to the emergence of new and precedent fungal diseases in fish. Three serious fungal pathogens in Nile tilapia have been identified: superficial infection by Saprolegnia spp., systemic infection by Ichthyophonus sp., and gill-affecting Branchiomyces. This study provides a comprehensive analysis of these fungal pathogens and their prevalence in both wild and cultured Nile tilapia in Egypt.
Article
Immunology
Liting Wu, Along Gao, Lan Li, Jianlin Chen, Jun Li, Jianmin Ye
Summary: This study utilized single-cell RNA sequencing to explore the immune cell heterogeneity in the anterior kidney of teleost fish. The research identified 22 clusters corresponding to five distinct immune cell subsets, with a focus on detailed classification of B cell subsets.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Environmental Sciences
Mengmeng Yi, Wanting Zhai, Miao Wang, He Wang, Zhigang Liu, Fengying Gao, Xiaoli Ke, Changbin Song, Jianmeng Cao, Maixin Lu
Summary: The light spectrum has a significant impact on the environment and welfare of farmed fish. This study found that full-spectrum and red light positively affected fish growth, while yellow and blue light had a negative effect. The light spectrum also influenced stress responses, behavior, and related physiological functions and metabolic pathways. The results suggest that red light should be used in the culture of Nile tilapia juveniles.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Rowida E. Ibrahim, Gehad E. Elshopakey, Ghada I. Abd El-Rahman, Amany I. Ahmed, Dalia E. Altohamy, Asmaa W. Zaglool, Elsayed M. Younis, Abdelwahab A. Abdelwarith, Simon J. Davies, Helal F. Al-Harthi, Afaf N. Abdel Rahman
Summary: Our study investigated the use of Moringa oleifera synthesized silver nanoparticles (MS-AgNPs) as a potential therapy for Saprolegnia spp. infection in Nile tilapia. The results showed that a dose of 0.6 mg/L of MS-AgNPs improved the immune-antioxidant status and hepatic function indices in the infected fish. This suggests that MS-AgNPs could be a promising option for controlling Saprolegnia spp. infection in aquaculture.
AQUACULTURE REPORTS
(2022)
Article
Agriculture, Dairy & Animal Science
Edgar Junio Damasceno Rodrigues, Paulo Incane Ito, Lucas Franco Miranda Ribeiro, Pedro Luiz Pucci Figueiredo de Carvalho, William dos Santos Xavier, Matheus Gardim Guimaraes, Ademir Calvo Fernandes Jr, Luiz Edivaldo Pezzato, Margarida Maria Barros
Summary: Phytase supplementation at levels of 1500 to 2000 UF kg(-1) enhances the growth performance and nutrient bioavailability of Nile tilapia reared according to industry practices, reducing environmental impacts and promoting fish farming sustainability.
Article
Fisheries
Anna DiCocco, Travis May, Curtis Crouse, David Marancik, Vipaporn Phuntumart, Satyaki Ghosh, Gayathri Udayangika Beligala, Natalie Redman, Megan Murray, Gregory Fischer, Steven Summerfelt, Christopher Good
Summary: The study investigated the effects of water disinfectants on Atlantic salmon fry, finding that hydrogen peroxide treatment significantly improved survival rates while peracetic acid (PAA) treatments showed no significant differences compared to controls. Waterborne Saprolegnia spp. concentrations did not differ significantly among treatments. The results provide valuable insights for water treatment during the Atlantic salmon fry stage.
AQUACULTURE RESEARCH
(2021)
Article
Fisheries
Neeraj Sood, Dev Kumar Verma, Anutosh Paria, Shrish Chandra Yadav, Manoj Kumar Yadav, Megha Kadam Bedekar, Saurav Kumar, Thangaraj Raja Swaminathan, Chadag Vishnumurthy Mohan, K. Rajendran, Pravata Kumar Pradhan
Summary: The study compared the transcriptional profiles of liver in experimentally-infected and control tilapia, revealing the host's attempt to resist TiLV infection through various signaling pathways. However, upregulation and downregulation of key genes indicated TiLV's ability to subvert the host immune response successfully.
FISH & SHELLFISH IMMUNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Xu Zhang, Jun Xiao, Zhongbao Guo, Huan Zhong, Yongju Luo, Jingjie Wang, Zhanyang Tang, Ting Huang, Manyuan Li, Jiajie Zhu, Qiuwei Ao
Summary: LBP can promote the growth of Nile tilapia and has a protective effect on the liver and spleen. Transcriptomics and metabolomics analysis showed that LBP mainly regulates the metabolic waste levels of tilapia through pathways like Purine metabolism and FoxO signaling.
Article
Genetics & Heredity
Lene Sveen, Aleksei Krasnov, Gerrit Timmerhaus, Andre Sture Bogevik
Summary: The study showed that the transcriptional response in the skin of Atlantic salmon fed a mineral diet and infected with lice changed, indicating enhanced immune and stress responses, with genes affected also related to the feed. The mineral diet also influenced the ratio of blue and purple mucous cells in the skin.
Article
Marine & Freshwater Biology
Zhi-Hua Li, Shaoying Xing, Ping Li, Shuwen He, Zhihan Cao, Xu Wang, Xuqian Cao, Bin Liu, Hong You
Summary: In this study, the toxicological effects of triphenyltin (TPT) in Nile tilapia under different salinities were investigated using biochemical, histological, and transcriptional analyses. The results showed that TPT exposure weakened antioxidant defenses and caused liver damage, with a primary impact on lipid metabolism and immunity. Salinity exposure alone primarily affected carbohydrate metabolism, while combined exposure affected immune- and metabolic-related signaling pathways. Furthermore, single exposure to TPT or salinity induced inflammation by up-regulating pro-inflammatory cytokines, while combined exposure suppressed inflammation by down-regulating pro-inflammatory cytokine levels. These findings enhance our understanding of the negative effects of TPT exposure in Nile tilapia in various salinity zones and their potential defense mechanisms.
AQUATIC TOXICOLOGY
(2023)
Article
Fisheries
Elisa Maia de Godoy, Fernanda S. David, Naor S. Fialho, Danilo C. Proenca, Tavani R. Camargo, Guilherme Wolff Bueno
Summary: This study evaluated the environmental sustainability of family fish farms producing Nile tilapia in earthen pond semi-intensive systems in the Vale do Ribeira region of São Paulo state, Brazil. It found that environmental sustainability was influenced by increased pollutant generation in fish farms, but can be improved through alternative technologies that use water more efficiently. The results also showed that environmental sustainability indicators and index are effective tools in planning sustainable aquaculture activities.
Article
Biotechnology & Applied Microbiology
Valentina Valenzuela-Munoz, Juan Antonio Valdes, Cristian Gallardo-Escarate
Summary: This study aimed to explore the transcriptional modulation of long non-coding RNAs during the freshwater to seawater transfer in Atlantic salmon. The results showed that most transcripts differently modulated were downregulated in all salinity conditions, and putative lncRNAs were identified with potential regulatory roles in smoltification-related genes. The lncRNAs may serve as novel biomarkers for the fish smoltification process, and specific lncRNAs like lncRNA_145326 and lncRNA_18762 are potentially related to the parr-smolt transfer in Atlantic salmon.
MARINE BIOTECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
V. Muhawenimana, J. R. Thomas, C. A. M. E. Wilson, J. Nefjodova, A. C. Chapman, F. C. Williams, D. G. Davies, S. W. Griffiths, J. Cable
Summary: This study found that the invasive species Lepomis gibbosus and Pseudorasbora parva occupy near-bed regions of flowing water to conserve energy and seek refuge, with their swimming performance improving as temperature increases. The behavior of these non-native fish is influenced by water temperature, flow velocity, and turbulence, suggesting that they may benefit from the warming temperatures predicted under global climate change.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Fisheries
Mateus G. S. Lira, Waldir M. Berbel-Filho, Helder M. Espirito-Santo, Andrei Tatarenkov, John C. Avise, Carlos Garcia Leaniz, Sofia Consuegra, Sergio M. Q. Lima
Summary: Mangrove killifishes of the genus Kryptolebias, historically classified as rare due to their small size and cryptic nature, are found to be ubiquitously distributed across western Atlantic mangroves. The study reveals substantial genetic differences between clades, as well as further genetic structuring within clades in different regions, shedding light on the taxonomic status and distribution patterns of these self-fertilizing killifishes in the western Atlantic mangroves.
JOURNAL OF FISH BIOLOGY
(2021)
Review
Fisheries
Carlos Garcia de Leaniz, Carolina Gutierrez Rabadan, Sara I. Barrento, Rebecca Stringwell, Paul N. Howes, Ben A. Whittaker, Jessica F. Minett, Robert G. Smith, Craig L. Pooley, Ben J. Overland, Leigh Biddiscombe, Richard Lloyd, Sofia Consuegra, Jake K. Maddocks, Paul T. J. Deacon, Ben T. Jennings, Sonia Rey Planellas, Amanda Deakin, Amber I. Moore, Daniel. Phillips, Guillermo Bardera, Maria F. Castanheira, Maria Scolamacchia, Nancy Clarke, Ollie Parker, John Avizienius, Malcolm Johnstone, Michalis Pavlidis
Summary: Through a Delphi approach, our study provides 16 practical solutions for improving lumpfish welfare, emphasizing the importance of indicators such as fin erosion and body damage. Additionally, significant differences between Atlantic salmon and lumpfish in behavior, habitat preferences, and nutritional needs were identified.
REVIEWS IN AQUACULTURE
(2022)
Article
Agriculture, Dairy & Animal Science
Frances C. Ratcliffe, Carlos Garcia de Leaniz, Sofia Consuegra
Summary: Identifying population structuring in highly fecund marine species with high dispersal rates is challenging but critical for conservation and stock delimitation. This study used MHC markers to detect cryptic population structuring in European sea bass, a species of fisheries and aquaculture relevance, which could not be identified using neutral markers.
Article
Multidisciplinary Sciences
Eduardo Dopico, Elena Arboleya, Sara Fernandez, Yaisel Borrell, Sonia Consuegra, Carlos Garcia de Leaniz, Gloria Lazaro, Cesar Rodriguez, Eva Garcia-Vazquez
Summary: River barriers, such as dams and reservoirs, have significant impacts on river dynamics and aquatic ecosystems. The importance of these barriers lies in the services they provide, such as water supply and low-carbon energy, which are increasingly critical due to climate change. A study conducted in two regions in Spain with contrasting climates and water security found that support for dams was higher in the drier region, where water shortages are more common. However, awareness of the impacts of dams was also higher in this region, indicating the need for involving local citizens in decision-making processes regarding water management.
SCIENTIFIC REPORTS
(2022)
Article
Marine & Freshwater Biology
Patrick B. Hamilton, Alice Baynes, Elizabeth Nicol, Graham Harris, Tamsyn M. Uren Webster, Nicola Beresford, Marta Straszkiewicz, Susan Jobling, Charles R. Tyler
Summary: This study investigated the effects of ethinylestradiol (EE2) exposure on the sexual development of roach and found that chronic exposure to low levels of EE2 can have reproductive health outcomes for both male and female roach. The study also found that EE2 exposure increased the proportion of genetic females with vitellogenic oocytes, suggesting a potential impact on fish populations. However, there was no evidence that the population origin affected sensitivity to estrogens.
AQUATIC TOXICOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Waldir M. Berbel-Filho, George Pacheco, Mateus G. Lira, Carlos Garcia de Leaniz, Sergio M. Q. Lima, Carlos M. Rodriguez-Lopez, Jia Zhou, Sofia Consuegra
Summary: Hybridization plays a role in increasing genetic and epigenetic variation in natural hybrids of two genetically divergent fish species with different mating systems, as shown by the analysis of genetic backgrounds and methylation patterns. The study reveals that hybrids display predominantly intermediate methylation patterns, suggesting additive effects from hybridization. Additionally, a large number of differentially methylated cytosines between hybrids and parental species suggest the potential role of hybridization in increasing genetic and epigenetic variation.
Review
Environmental Sciences
Carlos Garcia de Leaniz, Jesse R. O'Hanley
Summary: Barrier removal is an effective method for restoring river connectivity, but resources for defragmenting rivers are limited, requiring a prioritization strategy. The effectiveness of barrier removal depends on barrier typology, location, size, and impacts, with a focus on targeting barriers with high fragmentation impacts. Prioritization methods can be reactive or proactive, local or larger-scale, and formal or informal, with a hybrid approach likely to be the most effective. Accuracy in stream networks, barrier coordinates, and numbers is crucial for successful barrier removal projects, with ground truthing and predictive modeling as potential solutions for uncertainties.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biodiversity Conservation
J. F. Minett, D. M. Fowler, J. A. H. Jones, P. Brickle, G. T. Crossin, S. Consuegra, C. Garcia de Leaniz
Summary: Non-native salmonids are protected in the Southern hemisphere, but they pose a threat to native fishes. The introduction and spread of brown trout in the Falkland Islands have been facilitated by human assistance. Without containment measures, brown trout may invade almost all suitable freshwater habitats in the Falklands, putting native freshwater fishes at risk of extinction.
BIOLOGICAL INVASIONS
(2023)
Article
Biochemistry & Molecular Biology
Waldir M. Berbel-Filho, George Pacheco, Andrey Tatarenkov, Mateus G. Lira, Carlos Garcia de Leaniz, Carlos M. Rodriguez Lopez, Sergio M. Q. Lima, Sofia Consuegra
Summary: This study presents a phylogenomic hypothesis on the evolutionary relationships within the killifish genus Kryptolebias through the use of mtDNA and genome-wide nuclear sites, revealing a new lineage hidden in a case of mito-nuclear discordance, and providing evidence of multiple events of ancestral introgression in the genus.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Psychology, Biological
Priscila F. Silva, Carlos Garcia de Leaniz, Fulvio A. M. Freire, Vanessa A. M. Silveira, Ana C. Luchiari
Summary: This study investigated the effects of two potential variables, fish origin and environmental parameters, on zebrafish behavior. The results showed that increased light intensity led to changes in fish behavior, specifically an increase in freezing duration and distance from the bottom of the tank, indicating increased anxiety. Swimming activity increased at the lowest temperature (25 degrees C), but different levels of background noise did not cause significant behavioral changes. Differences were also observed between zebrafish strains and populations, with the AB strain from laboratory 2 being more affected by changes in temperature, light, and background noise compared to the AB strain from laboratory 1. The study highlights the importance of considering and reporting variation in strains and holding conditions to improve data interpretation and reproducibility.
BEHAVIOURAL PROCESSES
(2023)
Article
Environmental Sciences
Mauro Carolli, Carlos Garcia de Leaniz, Joshua Jones, Barbara Belletti, Helena Hudek, Martin Pusch, Pencho Pandakov, Luca Borger, Wouter van de Bund
Summary: The Balkan region has well-conserved rivers, but faces conflicts between promoting renewable hydropower and prioritising river conservation. To resolve this conflict, reliable information is needed. Using barrier data, the study analysed river fragmentation and simulated dam construction scenarios. The findings show that all dam construction scenarios would result in a loss of connectivity, with the largest loss occurring if all planned dams were built, and small dams contributing disproportionately to fragmentation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
S. Trevi, T. Uren Webster, S. Consuegra, C. Garcia de Leaniz
Summary: The use of microalgae in fish nutrition can help reduce the pressure on wild fish stocks, but there is a lack of systematic quantitative evaluation on the benefits. A meta-analysis of 50 peer-reviewed studies was conducted, which showed that inclusion of Spirulina in the fish diet significantly improved growth, while inclusion of Schizochytrium maintained the content of omega-3 PUFA in fish fillet. The study suggests that microalgae replacements can be used to enhance fish growth and maintain fillet quality, but further research under commercially relevant conditions is needed to reduce uncertainty.
SCIENTIFIC REPORTS
(2023)