Article
Fisheries
P. Rameshkumar, C. Balachandran, S. Vairamuthu, G. Dhinakar Raj, J. John Kirubaharan, K. Nagarajan, B. M. Nazeera, P. Ezhil Praveena, K. P. Jithendran
Summary: Two disease outbreaks occurred in cage-cultured cobia fingerlings in Palk Bay and Gulf of Mannar during the summer months. The mortality rate was high, and the clinical signs and gross lesions indicated viral nervous necrosis and bacterial infection. Higher water temperature and other stress factors were identified as potential causes for the mass mortality.
Article
Microbiology
Lorena Biasini, Paola Berto, Miriam Abbadi, Alessandra Buratin, Marica Toson, Andrea Marsella, Anna Toffan, Francesco Pascoli
Summary: European sea bass is an important species for Mediterranean aquaculture and is susceptible to betanodavirus infections. This study evaluated the pathogenicity of different RGNNV/SJNNV strains in European sea bass and found that reassortants of these strains can cause varying levels of mortality. Additionally, high viral loads were detected in asymptomatic survivors, suggesting a possible reservoir role for the species. Comparison of complete genomic segments identified amino acid residues likely involved in the variable pathogenicity of RGNNV/SJNNV strains in European sea bass.
Article
Fisheries
Venkata Satyanarayana Nallala, M. Makesh, K. Radhika, T. Sathish Kumar, P. Raja, R. Subburaj, M. Kailasam, K. K. Vijayan
Summary: In this study, nervous necrosis virus was successfully isolated from asymptomatic wild Asian seabass, and its genome was analyzed. The virus showed infectivity to Asian seabass larvae, causing 100% mortality, making it a potential candidate for developing a vaccine against viral nervous necrosis.
Article
Agriculture, Dairy & Animal Science
Emilie Delpuech, Marc Vandeputte, Romain Morvezen, Anastasia Bestin, Mathieu Besson, Joseph Brunier, Aline Bajek, Boudjema Imarazene, Yoannah Francois, Olivier Bouchez, Xavier Cousin, Charles Poncet, Thierry Morin, Jean-Sebastien Bruant, Beatrice Chatain, Pierrick Haffray, Florence Phocas, Francois Allal
Summary: This study identified a genomic region associated with VNN resistance, including the ZDHHC14 and IFI6/IFI27-like genes. The findings can contribute to the improvement of sea bass breeding programs through marker-assisted genomic selection for more resistant fish.
GENETICS SELECTION EVOLUTION
(2023)
Article
Immunology
Janlin Chan, Lee Ching Pei Carmen, Si Qi Lee, Mookkan Prabakaran
Summary: This study describes the sequence and expression of immunoglobulin T (IgT) in Asian sea bass (ASB) for the first time. IgT was found to be present in the gills and intestines of ASB, and its expression was upregulated in response to viral infection. This research suggests that ASB IgT may play a crucial role in mucosal immune responses against viral infection and could be utilized for evaluating mucosal vaccines and adjuvants.
FRONTIERS IN IMMUNOLOGY
(2023)
Article
Fisheries
Sofie Barsoe, Francois Allal, Alain Vergnet, Marc Vandeputte, Niels Jorgen Olesen, Jacob Gunther Schmidt, Cathrine Agnete Larsen, Argelia Cuenca, Niccolo Vendramin
Summary: The study compared the resistance to two strains of betanodavirus among three populations of sea bass, finding that the Eastern Mediterranean population had the highest survival rate, possibly due to lower levels of viral RNA in the brain.
AQUACULTURE REPORTS
(2021)
Article
Virology
Murat Kaplan, Mehmet Taner Karaoglu
Summary: The study in Turkey investigated the prevalence of betanodavirus in sea bass hatcheries and farms, revealing the presence of the virus in fingerling-sized sea bass without causing significant clinical symptoms.
ARCHIVES OF VIROLOGY
(2021)
Article
Immunology
Yulema Valero, Jose G. Olveira, Carmen Lopez-Vazquez, Carlos P. Dopazo, Isabel Bandin
Summary: Nervous necrosis virus (NNV) is a serious threat to marine and freshwater fish species, and Senegalese sole in Mediterranean aquaculture is highly susceptible to NNV outbreaks. Vaccines for aquaculture, such as those based on formalin or binary ethylenimine (BEI) inactivation, have shown promise in inducing immune responses and improving survival rates in NNV-infected fish. Further research is needed to enhance the protection effectiveness of these vaccines and gain a deeper understanding of the immune mechanisms involved.
Article
Biochemistry & Molecular Biology
Hong-Jun Tai, Mon-Chien Lee, Yi-Ju Hsu, Chun-Yen Kuo, Chi-Chang Huang, Ming-Fu Wang
Summary: Sea bass, a fish rich in protein and omega-3, has been found to have many health benefits. This study investigated the effects of supplementing with Hi-Q sea bass essence on exercise performance and fatigue resistance. The results showed that sea bass essence supplementation significantly improved endurance exercise performance and glycogen storage in the liver and muscles. It also reduced fatigue-related biochemical markers. Overall, sea bass essence supplementation effectively improved exercise performance and had anti-fatigue effects.
Article
Biotechnology & Applied Microbiology
Athira Raveendran, K. L. Dhanya Lenin, Anju M.V., Neelima S., Anooja V.V., Athira P. P., Archana K., Rosamma Philip, Swapna P. Antony
Summary: Antimicrobial peptides (AMPs) are crucial components of the innate immune system in all living organisms, with fishes such as the Asian sea bass being a potential source of AMPs, particularly from beta-defensins known for their antimicrobial and immunomodulatory activities. The molecular characterization of a beta-defensin AMP sequence (Lc-BD) from the Asian sea bass revealed key features such as the presence of intramolecular disulphide bonds and a close phylogenetic relationship with beta-defensins from other fish species.
PROBIOTICS AND ANTIMICROBIAL PROTEINS
(2021)
Article
Fisheries
Yuting Fu, Yong Li, Wenfeng Zhang, Weixuan Fu, Wangdong Li, Zhiming Zhu, Shaoping Weng, Jianguo He, Chuanfu Dong
Summary: A bivalent inactivated vaccine against ISKNV/RSIV and SDDV was developed and evaluated in Asian seabass. The survival rates of immunized fish were between 86.67% and 96.7%. The study also provided important information on the clinical symptoms and pathological changes caused by the viruses, contributing to the prevention and control of megalocytiviruses in Asian seabass.
Article
Fisheries
Krishnapriya Raji Sathyan, Avinash Premraj, Sajeevan Thavarool Puthiyedathu
Summary: The intensification of Asian Seabass aquaculture has led to the emergence of viral diseases such as viral nervous necrosis (VNN), which cause massive mortalities and enormous economic losses in the region. Currently, there are no effective prophylactic or therapeutic measures against the etiological agent of the disease-the nervous necrosis virus (NNV). We report the cloning and characterization of two 2-cysteine-containing type I IFNs from Lates calcarifer, which play an important role in the host innate immune response against betanodavirus and other emerging viruses threatening Lates aquaculture.
AQUACULTURE RESEARCH
(2022)
Article
Immunology
Zahaludin Amir-Danial, Mohd Zamri-Saad, Mohammad Noor Azmai Amal, Salleh Annas, Aslah Mohamad, Sutra Jumria, Tilusha Manchanayake, Ali Arbania, Md Yasin Ina-Salwany
Summary: This study determines the immune response and protective efficacy of a monovalent vaccine against vibriosis in Asian seabass. The results show that the vaccinated group has significantly higher innate and adaptive immune responses compared to the non-vaccinated group. This study reveals that feed-based vaccination improves growth performance, stimulates innate and adaptive immune responses, and increases protection against vibriosis in Asian seabass.
Article
Food Science & Technology
Krisana Nilsuwan, Saowakon Pomtong, Afeefah Chedosama, Pornsatit Sookchoo, Soottawat Benjakul
Summary: Asian sea bass scales have collagen and calcium, and their value can be increased by producing biocalcium. The optimal alkaline pretreatment for removing non-collagenous proteins from scales was found to be using a 2 M NaOH solution for 10 minutes. The study also showed that boiling the scales resulted in lower loss of hydroxyproline (HYP) and decreased hardness, while high-pressure heating produced biocalcium powder with higher ash, calcium, and phosphorus contents.
Article
Fisheries
N. Venkata Satyanarayana, M. Makesh, Avtar Sain, N. S. Jayaprakash, M. Kailasam, K. K. Vijayan
Summary: Viral nervous necrosis (VNN) is a serious viral disease in fish that can be screened using ELISA, and the immune response of Asian seabass can be monitored through antibody detection and RT-PCR.
FISH AND SHELLFISH IMMUNOLOGY REPORTS
(2021)
