Article
Limnology
Riss M. Kellogg, Dawn M. Moran, Matthew R. McIlvin, Adam Subhas, Andrew E. Allen, Mak A. Saito
Summary: Functional substitution of zinc and cobalt has been observed in marine diatoms, but Antarctic polar diatom Chaetoceros neogracile RS19 does not exhibit zinc/cobalt substitution ability. The diatom actively assimilates dissolved cobalt despite its inability to substitute for zinc. Proteomic analysis shows changes in the abundance of certain proteins in response to increased zinc concentration.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Fisheries
Chettupon Pooljun, Pitchanee Jariyapong, Tuempong Wongtawan, Ikuo Hirono, Suwit Wuthisuthimethavee
Summary: This study compared the effectiveness of beta-glucans from two marine diatoms in promoting growth and enhancing immunity in banana shrimp. The results showed that adding beta-glucans significantly improved the growth performance and immunity of banana shrimp, with better results observed with beta-glucans from C. muelleri.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Marine Remize, Frederic Planchon, Ai Ning Loh, Fabienne Le Grand, Margaux Mathieu-Resuge, Antoine Bideau, Rudolph Corvaisier, Aswani Volety, Philippe Soudant
Summary: Carbon isotopic fractionation in the diatom Chaetoceros muelleri was studied with C-13-depleted CO2 during batch culture, showing that the fractionation varied with culture ages and unsaturated fatty acids were more depleted than saturated and monounsaturated fatty acids. The results highlight the importance of considering phytoplankton physiological status in ecological and biogeochemical studies as they strongly influence the carbon isotopic composition.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Engineering, Environmental
Hongzhe Dong, Lihong Liu, Qinfei Zhou, Yinyin Tang, Huiling Wang, Yongguang Yin, Jianbo Shi, Bin He, Yanbin Li, Ligang Hu, Guibin Jiang
Summary: This study investigated the formation, distribution, and excretion of mercury nanoparticles in diatom Chaetoceros curvisetus, and found that these nanoparticles play crucial roles in understanding mercury fate in the ocean and its burial in sediments.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Fisheries
Linxin Dai, Peixun Chen, Danqing Hou, Yue Wang, Yinhuan Zhou, Chengbo Sun
Summary: This study isolated and identified a strain of Vibrio fortis from a biofloc pool, and investigated its pathogenicity and antibiotic sensitivity in Penaeus monodon. The study also explored the immune response and molecular changes in P. monodon infected with V. fortis. The findings provide insights into the study and control of shrimp vibriosis.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Multidisciplinary Sciences
Thomas Lacour, Jade Lariviere, Joannie Ferland, Philippe-Israel Morin, Pierre-Luc Grondin, Natalie Donaher, Amanda Cockshutt, Douglas A. Campbell, Marcel Babin
Summary: This study investigates the adaptation of an Arctic diatom to changes in light and temperature. The diatom showed high protein contents, low re-oxidation of newly fixed carbon, and the use of alternative electron pathways, which contribute to efficient growth under extreme environmental conditions.
Article
Biotechnology & Applied Microbiology
Nerissa L. Fisher, Kimberly H. Halsey, David J. Suggett, Michelle Pombrol, Peter J. Ralph, Adrian Lutz, E. Maggie Sogin, Jean-Baptiste Raina, Jennifer L. Matthews
Summary: This study used transcriptomic and metabolomic approaches to study the mechanisms underlying diatom acclimation and growth under different light intensities. The results showed that diatoms shift their carbon and energy fluxes depending on the growth rate driven by light. Under high light conditions, diatoms upregulate metabolic pathways for fatty acid, glycolic acid, and carbohydrate production to support fast growth. Under low light conditions, diatoms conserve energy through upregulation of carbon retention pathways and regulate metabolites associated with light harvesting, energy storage, and signaling. These findings provide important insights for predicting and manipulating diatom growth and bio-production.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Environmental Sciences
Bokun Chen, Hui Song, Xue Yang, Ge Xu, Wei Zhao, Yue Meng, Gang Li
Summary: Anthropogenic activities and climate change worsen marine deoxygenation, affecting both aerobic and photoautotrophic organisms. Reduced oxygen levels in the ocean result in decreased protein content in phytoplankton cells, potentially disrupting marine food chains.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Sudalayandi Kannappan, Krishnamoorthy Sivakumar, Karingalakkandy P. Jithendran, Balasubramaniam Sivamani, Peter E. Praveena
Summary: The study showed that the extract of R. mucronata had inhibitory effects on the growth and virulence of Vibrio harveyi, reducing mortality rates in shrimp larvae culture. The presence of volatile compounds like tetramethyl-6,7,8,8a-tetrahydro-5H-naphthalene-1-one and squalene in the extract may contribute to its effectiveness in controlling V. harveyi populations.
SPANISH JOURNAL OF AGRICULTURAL RESEARCH
(2021)
Article
Ecology
Rickard Stenow, Elizabeth K. Robertson, Martin J. Whitehouse, Helle Ploug
Summary: This study investigates the cell-specific activities of a chain-forming diatom and its interactions with attached bacteria using stable isotopic tracers and secondary ion mass spectrometry (SIMS). The results show that, under nutrient limitation, there is low variance of assimilation within diatom chains, with attached bacteria able to obtain nutrients from the assimilates. However, as the chain length decreases, assimilation in the solitary cells becomes more significant. In the late stationary phase, cells with different activities coexist within the same chain, and bacterial remineralization and nutrient transfer between neighboring cells may play an important role in cell survival under nitrogen-limited conditions.
Article
Engineering, Environmental
C. M. Vineeth Kumar, V Karthick, D. Inbakandan, V. Ganesh Kumar, Eldon R. Rene, T. Stalin Dhas, M. Ravi, P. Sowmiya, C. G. Anjali Das
Summary: The study found that selenium nanoparticles (SeNPs) have toxicity on marine diatom Chaetoceros gracilis and can cause cellular level alterations. Exposure to SeNPs resulted in significant damage to cell membranes and lipid peroxidation within 96 hours.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Agriculture, Dairy & Animal Science
Ximing Li, Ruixiang Liu, Zhe Wang, Guotai Zheng, Junlin Lv, Lanfen Fan, Yubin Guo, Yuefang Gao
Summary: To enhance farming efficiency, most farmers prefer to purchase Penaeus larvae as opposed to hatching them themselves. However, counting small and highly congested larvae during transactions is a challenging task to accomplish manually. We propose an equal keypoint regression method to improve counting precision and decrease human labor costs.
Article
Fisheries
Suparat Taengchaiyaphum, Jiraporn Srisala, Piyachat Sanguanrut, Chalermporn Ongvarrasopone, Timothy W. Flegel, Kallaya Sritunyalucksana
Summary: LSNV, discovered in 2006, is proposed as a cause of retarded growth in giant tiger shrimp. Recent research suggests that LSNV and WZSV 9 may be different isolates of the same virus species.
Article
Plant Sciences
Zhengke Li, Yong Zhang, Wei Li, Andrew J. Irwin, Zoe V. Finkel
Summary: Marine planktonic diatoms, including Thalassiosira pseudonana, play a vital role in phytoplankton blooms and marine primary production due to their ability to respond quickly to environmental changes. Through RNA-Seq analysis, this study identified a subset of 1076 genes termed the diatom environmental stress response (d-ESR) that are differentially expressed in response to various stressors affecting energy balance and metabolic capacity. It was found that the d-ESR mainly consists of genes involved in maintaining proteome homeostasis and primary metabolism. Additionally, the study revealed the regulation of photosynthesis and the unique role of chloroplast in managing environmental stress in diatoms.
Article
Fisheries
Zhi-Bin Lu, Yun-Dong Li, Shi-Gui Jiang, Qi-Bin Yang, Song Jiang, Jian-Hua Huang, Li-shi Yang, Xu Chen, Fa-Lin Zhou
Summary: The decrease of seawater pH can negatively affect the metabolism, acid-base balance, immune response, and immunopro-tease activity of aquatic animals. In this study, differentially expressed genes related to lipid metabolism, induction of oxidative stress, and inflammatory response in the muscle of penaeus monodon under low pH stress were identified through high-throughput sequencing analysis. These genes provide valuable reference information for future breeding of low pH-tolerant shrimp.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Infectious Diseases
Yuttapong Thawornwattana, Ha Thanh Dong, Kornsunee Phiwsaiya, Pakkakul Sangsuriya, Saengchan Senapin, Pakorn Aiewsakun
Summary: Tilapia lake virus (TiLV) is an emerging virus that rapidly spread worldwide over the past 6 years, its origin and epidemiology characteristics are still largely unknown.
TRANSBOUNDARY AND EMERGING DISEASES
(2021)
Article
Zoology
Nukul Saengphan, Bhinyo Panijpan, Saengchan Senapin, Parames Laosinchai, Auaree Suksomnit, Kornsunee Phiwsaiya
Summary: A new species of small freshwater prawn was discovered in the upper southern peninsula of Thailand. This new species, M. prachuapense sp. nov., has distinct characteristics that differentiate it from closely related species, and phylogenetic analysis confirms its unique status.
Article
Fisheries
Terawut Prasitporn, Saengchan Senapin, Akapon Vaniksampanna, Siwaporn Longyant, Parin Chaivisuthangkura
Summary: The study introduced a new method for detecting SDDV virus, utilizing UDG-assisted CPA combined with HNB and LFD technologies, which proved to be rapid, simple, and effective.
JOURNAL OF FISH DISEASES
(2021)
Article
Fisheries
Le Thanh Dien, Nguyen Vu Linh, Pattiya Sangpo, Saengchan Senapin, Sophie St-Hilaire, Channarong Rodkhum, Ha Thanh Dong
Summary: The research demonstrated that using NB-O-3 is a safe and effective method to control bacterial diseases in aquaculture, and it significantly improves the survival rate of Nile tilapia against a lethal pathogen challenge.
JOURNAL OF FISH DISEASES
(2021)
Article
Fisheries
Thao Thu Mai, Pattanapon Kayansamruaj, Suwimon Taengphu, Saengchan Senapin, Janina Z. Costa, Jorge del-Pozo, Kim D. Thompson, Channarong Rodkhum, Ha Thanh Dong
Summary: The study developed heat-killed and formalin-killed vaccines for prevention of Tilapia tilapinevirus disease, with both vaccines showing significant protection and different gene expressions in the immune response.
JOURNAL OF FISH DISEASES
(2021)
Article
Fisheries
Jantana Kampeera, Sirintip Dangtip, Rapheephat Suvannakad, Pakapreud Khumwan, Saengchan Senapin, Wansika Kiatpathomchai
Summary: Tilapia is a globally significant aquaculture species facing mortality issues due to infectious pathogens like TiLV. A novel colorimetric assay based on RT-LAMP and AuNP has been developed for rapid onsite detection, showing high agreement with conventional PCR methods recommended by OIE but requiring significantly less time to perform.
JOURNAL OF FISH DISEASES
(2021)
Article
Fisheries
Jerome Delamare-Deboutteville, Suwimon Taengphu, Han Ming Gan, Pattanapon Kayansamruaj, Partho Pratim Debnath, Andrew Barnes, Shaun Wilkinson, Minami Kawasaki, Chadag Vishnumurthy Mohan, Saengchan Senapin, Ha Thanh Dong
Summary: This study successfully demonstrated a rapid diagnostic and genotyping method for tilapia lake virus using a combination of specific PCR assay and ONT-based amplicon sequencing, with high accuracy and operational feasibility. The approach is suitable for deployment in regional aquatic animal health diagnostic laboratories in low- and medium-income countries, allowing for fast identification and genotyping of emerging infectious pathogens from field samples within a single day.
JOURNAL OF FISH DISEASES
(2021)
Article
Biotechnology & Applied Microbiology
Wasusit Somsoros, Takeshi Sangawa, Katsuki Takebe, Jakrada Attarataya, Kanokpan Wongprasert, Saengchan Senapin, Triwit Rattanarojpong, Mamoru Suzuki, Pongsak Khunrae
Summary: The study revealed the crystal structure of the C-terminal domain of VP37 from WSSV, showing a trimeric assembly, sulphate binding sites, and the importance of these sites in binding to heparin. Mutagenesis of R213 and K257 resulted in significant loss of heparin binding activity, further demonstrating the essential role of these sites for VP37 binding to sulphate molecules.
JOURNAL OF GENERAL VIROLOGY
(2021)
Article
Fisheries
Thanwarat Sukonta, Saengchan Senapin, Watcharachai Meemetta, Thawatchai Chaijarasphong
Summary: A novel detection platform for SDDV based on CRISPR-Cas12a and recombinase polymerase amplification technology has been developed, showing high sensitivity and specificity for rapid and accurate diagnosis of SDDV. This user-friendly method can be completed within an hour at room temperature, potentially serving as a valuable tool for combating large-scale epidemics in fish farming communities.
JOURNAL OF FISH DISEASES
(2022)
Article
Fisheries
Partho Pratim Debnath, Nguyen Dinh-Hung, Suwimon Taengphu, Vuong Viet Nguyen, Jerome Delamare-Deboutteville, Saengchan Senapin, Chadag Vishnumurthy Mohan, Ha Thanh Dong, Channarong Rodkhum
Summary: Sixteen countries have reported the presence of tilapia lake virus (TiLV), an emerging pathogen affecting tilapia. In Bangladesh, 20% of farms tested positive for TiLV in tilapia, while co-cultivated fish species and invertebrates did not show signs of TiLV infection. Experimental infection only showed clinical signs in Nile tilapia, suggesting that species in polycultures may not be susceptible to TiLV.
JOURNAL OF FISH DISEASES
(2022)
Article
Fisheries
Ha Thanh Dong, Pattiya Sangpo, Le Thanh Dien, Thao Thu Mai, Nguyen Vu Linh, Jorge del-Pozo, Krishna R. Salin, Saengchan Senapin
Summary: CAIB in the pancreas of adult Nile tilapia infected with TiPV serves as a diagnostic feature, indicating exclusive replication of TiPV in pancreatic tissues, often accompanied by co-infection with Streptococcus agalactiae and secondary granulomas.
JOURNAL OF FISH DISEASES
(2022)
Review
Fisheries
Ha Thanh Dong, Thawatchai Chaijarasphong, Andrew C. Barnes, Jerome Delamare-Deboutteville, Peiyu Alison Lee, Saengchan Senapin, Chadag Vishnumurthy Mohan, Kathy F. J. Tang, Sharon E. McGladdery, Melba G. Bondad-Reantaso
Summary: The article "Diagnostics for diseases of tilapia: From basic to molecular diagnosis" explores the importance of the three levels of diagnostics for diseases of tilapia, particularly the frequently overlooked basic procedures. The article also covers current and emerging molecular diagnostic technologies for tilapia pathogens, and discusses future developments for transferring these technologies to farmers and stakeholders for a sustainable aquatic food system transformation.
REVIEWS IN AQUACULTURE
(2023)
Article
Fisheries
Ramida Phasunon, Suwimon Taengphu, Wattana Panphut, Satid Chatchaiphan, Ha Thanh Dong, Saengchan Senapin
Summary: A newly developed probe-based qPCR method for the detection of S. iniae was reported in this study. The method demonstrated high specificity and sensitivity, and can be applied for the diagnosis and surveillance of S. iniae infections in fish populations.
JOURNAL OF FISH DISEASES
(2023)
Article
Fisheries
Nguyen Vu Linh, Nareerat Khongcharoen, Dinh-Hung Nguyen, Le Thanh Dien, Naruporn Rungrueng, Chayuda Jhunkeaw, Pattiya Sangpo, Saengchan Senapin, Toungporn Uttarotai, Wattana Panphut, Sophie St-Hilaire, Hien Van Doan, Ha Thanh Dong
Summary: This study investigated the effects of oxygen nanobubble treatment on Nile tilapia. The results showed that both short-term and long-term exposure to high oxygen levels did not have obvious adverse effects on the fish, although there were some changes in the gut microbiome.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Fisheries
Onanong Charoenwai, Saengchan Senapin, Ha Thanh Dong, Molruedee Sonthi
Summary: Non-destructive sampling methods are beneficial for detecting and monitoring viral pathogens in economically important farmed fish. Blood was found to be the best non-destructive sample source for detecting scale drop disease virus in farmed Asian sea bass.
JOURNAL OF FISH DISEASES
(2021)
