Article
Fisheries
Trong Quoc Trinh, Seth Koranteng Agyakwah, Hooi Ling Khaw, John A. H. Benzie, Felix K. Y. Attipoe
Summary: The study demonstrated significant differences in growth performance between GIFT and Akosombo strains, with GIFT showing strong growth performance in an equatorial West African environment. Additionally, there was no significant difference in survival rate between the different strains.
Article
Fisheries
Kooloth Valappil Rajendran, Neeraj Sood, B. Madhusudhana Rao, Anisha Valsalam, Megha K. Bedekar, Kezhedath Jeena, Pravata Kumar Pradhan, Anutosh Paria, Thangaraj Raja Swaminathan, Dev Kumar Verma, Naresh Kumar Sood
Summary: Tilapia parvovirus (TiPV) has been detected in farmed Nile tilapia in two regions of India, Maharashtra and Uttar Pradesh. In Maharashtra, the infected fish showed characteristic clinical signs and TiPV was detected with Tilapia lake virus (TiLV) and/or Aeromonas spp. In Uttar Pradesh, only TiPV was detected in apparently healthy fish. The virus was found in various tissues and could be successfully propagated in a cell line. This is the third country, after China and Thailand, to report the presence of TiPV. The co-infection of TiPV and TiLV in Nile tilapia suggests a potential synergistic effect. Further research is needed to understand the virulence, host-specificity, and epidemiological risk factors of this emerging virus.
JOURNAL OF FISH DISEASES
(2023)
Article
Environmental Sciences
Mohamed F. A. Elazab, Abdelgayed M. Younes, Alkhateib Y. Gaafar, Alaa Z. Abu-Bryka, Mohamed M. Abdel-Daim
Summary: The immune-suppressed model of Nile tilapia can be induced by intraperitoneal injection of Cyclophosphamide at a dosage of 200 mg/kg BW, leading to significant decreases in various immune-related parameters.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Fisheries
Renata Catao Egger, Julio Cesar Camara Rosa, Luis Fernando Lara Resende, Santiago Benites de Padua, Fernanda de Oliveira Barbosa, Mariana Taise Zerbini, Guilherme Campos Tavares, Henrique Cesar Pereira Figueiredo
Summary: This study investigated lactococcosis outbreaks in Nile tilapia on Brazilian farms and characterized the isolates through multilocus sequence typing (MLST), virulence to Nile tilapia, and antimicrobial susceptibility. The pathogenicity of L. petauri to Nile tilapia was confirmed, and its rapid expansion was observed. Provisional epidemiological cutoff values were determined for L. petauri for six antimicrobial agents from different drug classes.
Article
Immunology
Alaa Eldin Eissa, Marwa M. Attia, Mamdouh Y. Elgendy, Gehad A. Ismail, Nader M. Sabry, Abdelbary Prince, Mahmoud A. Mahmoud, Ghada O. El-Demerdash, Mohamed Abdelsalam, Hassan I. M. Derwa
Summary: The study on farmed Nile tilapia from a commercial fish farm in Port Said, Egypt, revealed prevalent stress-triggered concurrent bacterial and parasitic infections. Bacteriological, parasitological, and pathological examinations confirmed the presence of Enterococcus fecalis, Streptococcus agalactiae, Centrocestus formosanus, and Myxobolus tilapiae in the sampled fish. The co-infections were likely caused by deleterious environmental conditions.
MICROBIAL PATHOGENESIS
(2021)
Article
Agriculture, Dairy & Animal Science
Elisabeth de Aguiar Bertaglia, William Eduardo Furtado, Angela Teresa Silva e Souza, Manoela Clemente Fernandes, Scheila Anelise Pereira, Elenice Martins Brasil, Jose Luiz Pedreira Mourino, Gabriela Tomas Jeronimo, Mauricio Laterca Martins
Summary: The aim of this study was to investigate the impact of abiotic and biotic factors in a tropical region on the rate of monogenean parasitism in Nile tilapia that are farmed in net cages. A total of 240 sexually reversed fish were analyzed, with 20 fish collected from each culture stage during each sampling month. The results showed that higher parasitic infection values were observed in colder seasons with lower precipitation, and autumn had the highest parasitic infection values compared to other seasons. The occurrence of monogenean parasites showed a negative correlation with season but a positive correlation with culture stage.
Article
Immunology
Qi Li, Zhiqiang Zhang, Weiqi Fan, Yongxiong Huang, Jinzhong Niu, Guoling Luo, Xinchao Liu, Yu Huang, Jichang Jian
Summary: The study identified a lect2 gene from Nile tilapia (On-lect2) and characterized its roles in the fish's immune response against bacterial infection. On-LECT2 plays important functions in promoting inflammation, reducing tissue damages, and improving survival rate of Nile tilapia during bacterial infection, with the highest transcriptional levels in the liver.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Marcos Edgar Herkenhoff, Luiz A. Bovolenta, Oliver Broedel, Lucilene D. dos Santos, Arthur C. de Oliveira, Luiz G. A. Chuffa, Amanda de O. Ribeiro, Luiz A. Lupi, Marco A. D. Dias, Alexandre W. S. Hilsdorf, Marcus Frohme, Danillo Pinhal
Summary: This study characterized the miRNA and protein profiles of Nile tilapia crossbreed using high throughput sequencing and mass spectrometry techniques, revealing distinctive features in gene expression and protein composition between the crossbreed and its parental strains. These unique miRNA and protein signatures contribute to the phenotype of the crossbreed.
Article
Evolutionary Biology
Agustin Barria, Carolina Penaloza, Athina Papadopoulou, Mahirah Mahmuddin, Andrea Doeschl-Wilson, John A. H. Benzie, Ross D. Houston, Pamela Wiener
Summary: This study used a whole-genome pooled sequencing (Poolseq) approach to investigate the genetic structure and selection signatures in Nile tilapia populations, with a focus on the GIFTw strain developed by WorldFish. The study also examined important farmed strains from The Philippines and Africa. The findings revealed genetic differentiation between Asian and African populations, as well as genomic regions associated with muscle-related traits and fillet yield.
EVOLUTIONARY APPLICATIONS
(2023)
Article
Fisheries
Mamdouh Y. Elgendy, Mohamed Abdelsalam, Amany M. Kenawy, Shimaa E. Ali
Summary: This study investigated the outbreak of V. mimicus in farmed Nile tilapia in Egypt. The pathogen was found to be resistant to multiple antibiotics and caused high mortality. These findings provide a basis for controlling and preventing this disease.
AQUACULTURE INTERNATIONAL
(2022)
Article
Genetics & Heredity
Binglin Chen, Wei Xiao, Zhiying Zou, Jinglin Zhu, Dayu Li, Jie Yu, Hong Yang
Summary: Metabolic analysis of Nile tilapia with superior growth performance revealed significant differences in biochemical parameters and gene expression in key metabolic pathways, such as the tricarboxylic acid cycle, fatty acid biosynthesis and metabolism, and cholesterol biosynthesis and metabolism.
FRONTIERS IN GENETICS
(2022)
Article
Ecology
Agustin Barria, Trong Quoc Trinh, Mahirah Mahmuddin, Carolina Penaloza, Athina Papadopoulou, Ophelie Gervais, V. Mohan Chadag, John A. H. Benzie, Ross D. Houston
Summary: Enhancing host resistance to infectious disease through genetic markers presents a potential genetic solution for disease control in farmed animals, as demonstrated in a study on resistance to Tilapia lake virus in Nile tilapia.
Article
Biochemistry & Molecular Biology
Amanda Rodrigues dos Santos Magnabosco, Ester Inacio Damiao Quinova, Matheus Victor Viana de Melo, Paulo Eduardo da Silva Bastos, Thamiris Pinheiro Santos, Ivanildo Inacio da Silva Junior, Andre Lucas Correa de Andrade, Renata Meireles Oliveira Padilha, Jadson Freitas da Silva, Fabricio Bezerra de Sa, Marilia Ribeiro Sales Cadena, Pabyton Goncalves Cadena
Summary: This study developed a food additive for sex reversal of Nile tilapia using a simple nanoemulsion, which successfully induced sex reversal in tilapia with promising results.
FISH PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Immunology
Nehal A. Younis, Mamdouh Y. Elgendy, Salma I. El-Samannoudy, Mohamed Abdelsalam, Marwa M. Attia
Summary: Motile aeromonads and Cyathocotylidae spp. co-infections were found in farmed Nile tilapia suffering from mortalities. Moribund fish showed signs of septicemia, skin irritations, and respiratory distress. Bacteriological examination revealed infections with Aeromonas hydrophila, A. sobria, and A. caviae, while Cyathocotylidae spp. encysted metacercaria were found in parasitological examination. High levels of interleukin 6 (IL-6) and cluster of differentiation 4 (CD4) were noticed in fish with co-infection. The study provides valuable information for managing these pathogens in order to protect fish health.
MICROBIAL PATHOGENESIS
(2023)
Article
Fisheries
Lan Li, Along Gao, Jianlin Chen, Yang Lei, Liting Wu, Jianmin Ye
Summary: The study identified a CD5 homologue in Nile tilapia, named OnCD5, which plays a crucial role in immune function, especially highly expressed in B lymphocytes.
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
(2022)
Article
Evolutionary Biology
Grazyella M. Yoshida, Jose M. Yanez
Summary: Utilizing imputation of genotypes and whole-genome sequencing data, this study investigated the genetic architecture of growth traits in rainbow trout under chronic heat stress, revealing the polygenic nature of these traits. GWAS identified important functional candidate genes associated with growth traits, and using preselected SNPs based on GWAS hits improved the accuracy of genomic prediction. The use of WGS slightly increased prediction accuracy, supporting the evidence of the polygenic nature of growth traits measured under heat stress.
EVOLUTIONARY APPLICATIONS
(2022)
Article
Food Science & Technology
M. Mamani, M. E. LOpez, J. Correa, G. Ravest, P. Hinrichsen
Summary: This study identified key genes associated with sweetness and acidity in grapes, providing a basis for developing selection tools for grape breeding. Genomic regions hosting these genes were identified through a genetic map, showing significant quantitative trait loci for sugar and acidity traits. Additionally, an association between candidate gene expression changes and sugar/acidity concentration was observed.
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
(2021)
Article
Biodiversity Conservation
Maria Jose Frugone, Theresa L. Cole, Maria Eugenia Lopez, Gemma Clucas, Pavel Matos-Maravi, Nicolas A. Lois, Pierre Pistorius, Francesco Bonadonna, Phil Trathan, Andrea Polanowski, Barbara Wienecke, Andrea Raya-Rey, Klemens Putz, Antje Steinfurth, Ke Bi, Cynthia Y. Wang-Claypool, Jonathan M. Waters, Rauri C. K. Bowie, Elie Poulin, Juliana A. Vianna
Summary: Determining species boundaries in recently diverged taxa is challenging due to uneven genetic differentiation in the genome, reliance on limited genetic markers, and potential taxonomic inconsistencies. This study on rockhopper penguins found strong evidence supporting the taxonomic distinction of three species based on genome-wide divergence patterns. Recognition of this taxonomic diversity is crucial for the conservation and management of this widely distributed seabird group, highlighting the complexity of evolutionary histories and cryptic species diversity in dispersive seabird lineages.
DIVERSITY AND DISTRIBUTIONS
(2021)
Article
Biotechnology & Applied Microbiology
Maria I. Cadiz, Maria E. Lopez, Diego Diaz-Dominguez, Giovanna Caceres, Rodrigo Marin-Nahuelpi, Daniel Gomez-Uchida, Cristian B. Canales-Aguirre, Pablo Orozco-terWengel, Jose M. Yanez
Summary: Domestication processes and artificial selection in farmed rainbow trout leave signatures at a molecular level, with identified genomic regions containing genetic variants related to growth, development, reproduction, behavior, and immune system traits. This study detected several SNPs associated with candidate genes in interesting regions, providing insights into genetic traits of commercial importance.
Letter
Multidisciplinary Sciences
Mauricio A. Urbina, Pablo C. Guerrero, Viviane Jerez, Fulgencio Lison, Guillermo Luna-Jorquera, Camilo Matus-Olivares, Juan C. Ortiz, Guido Pavez, Maria J. Perez-Alvarez, Ramiro Riquelme-Bugueno, Macarena Santos-Carvallo, Maritza Sepulveda, Pedro F. Victoriano, Daniel Gomez-Uchida
Article
Fisheries
Baltasar F. Garcia, Alvaro Bonaguro, Carolina Araya, Roberto Carvalheiro, Jose M. Yanez
Summary: The inclusion of genomic information has accelerated genetic gain in shrimp breeding. Evaluating LD decay is crucial for assessing the feasibility of genomic selection. A study using a 50K SNP array tool characterized genomic diversity and LD in a farmed shrimp population.
AQUACULTURE REPORTS
(2021)
Review
Fisheries
David Tapia, Yoanna Eissler, Felipe E. Reyes-Lopez, Juan Kuznar, Jose Manuel Yanez
Summary: IPNV is a major pathogen in global aquaculture, causing highly contagious diseases in salmonids and research focusing on molecular characterisation and selective breeding. Recent studies have concentrated on IPNV classification, molecular epidemiology and global distribution, as well as genetic improvements for IPNV resistance and immune responses in salmonids.
REVIEWS IN AQUACULTURE
(2022)
Review
Evolutionary Biology
Jose M. Yanez, Peng Xu, Roberto Carvalheiro, Ben Hayes
Summary: The increasing global demand for food and the challenges facing animal farming require improvements in efficiency and sustainable practices. Genomic technologies can accelerate genetic progress in animal breeding and help meet the protein needs of future human consumption.
EVOLUTIONARY APPLICATIONS
(2022)
Letter
Multidisciplinary Sciences
Guillermo Figueroa-Munoz, Francisco Correa-Araneda, Beatriz Cid-Aguayo, Alfonso Henriquez, Loreto Arias, Ivan Arismendi, Daniel Gomez-Uchida
Review
Fisheries
Jose M. Yanez, Agustin Barria, Maria E. Lopez, Thomas Moen, Baltasar F. Garcia, Grazyella M. Yoshida, Peng Xu
Summary: Advancements in genomic technologies have played a crucial role in the genetic improvement of aquaculture species through the discovery and application of DNA-markers, such as SNPs. Specific genomic regions associated with economically important traits have been identified using GWAS, allowing the incorporation of markers linked to QTL into aquaculture breeding programs through MAS. However, most economically relevant traits are controlled by multiple QTLs, each explaining only a small portion of the genetic variation.
REVIEWS IN AQUACULTURE
(2023)
Article
Genetics & Heredity
Charles Sanchez-Roncancio, Baltasar Garcia, Jousepth Gallardo-Hidalgo, Jose M. Yanez
Summary: This study conducted GWAS using imputed genotypes at the sequence level and identified candidate genes associated with resistance to Piscirickettsia salmonis in rainbow trout. A total of 24 candidate genes were identified, which were mainly related to phagocytosis, innate immune response, inflammation, oxidative response, lipid metabolism, and apoptotic process.
Article
Computer Science, Theory & Methods
Diego Diaz-Dominguez, Gonzalo Navarro
Summary: The study presents a new semi-external algorithm for building the Burrows-Wheeler transform variant (BCR BWT) in linear expected time. The algorithm utilizes compression techniques to reduce computational costs for massive and repetitive inputs. Experimental results demonstrate significant space and computation time savings, especially when dealing with repetitive texts. The algorithm shows promising performance in processing real human genome assemblies, with lower memory usage and faster execution compared to the state-of-the-art BCR BWT construction algorithm.
INFORMATION AND COMPUTATION
(2023)
Proceedings Paper
Computer Science, Software Engineering
Diego Diaz-Dominguez, Gonzalo Navarro
Summary: This study presents a grammar for DNA sequencing reads that allows for direct computation of the BWT, enabling genomic analyses in succinct space that require complex string queries. Experimental results show that the space reduction achieved by the compressor is competitive with LZ-based methods and superior to entropy-based approaches, offering an average of 12% additional compression and requiring less working space and time compared to other popular grammars in this type of data.
2021 DATA COMPRESSION CONFERENCE (DCC 2021)
(2021)
Article
Evolutionary Biology
Monica Nunez-Flores, Daniel Gomez-Uchida, Pablo J. Lopez-Gonzalez
Summary: Thouarella Gray, 1870, is a diverse genus among gorgonians of the family Primnoidae in the Antarctic and sub-Antarctic seafloor. Through integrative approaches, three new species were described, indicating potential cryptic species in the Antarctic and sub-Antarctic regions. The global diversity of Thouarella has been increased to 41 species, with 15 endemics in the Antarctic and sub-Antarctic waters, suggesting the need for integrative taxonomic frameworks and species delimitation approaches in uncovering hidden diversity in shelf benthonic macrofauna of the Southern Ocean.
INVERTEBRATE SYSTEMATICS
(2021)