Article
Biology
Mohamad Azzam-Sayuti, Md Yasin Ina-Salwany, Mohd Zamri-Saad, Salleh Annas, Mohd Termizi Yusof, Md Shirajum Monir, Aslah Mohamad, Mohd Hafiz Ngoo Muhamad-Sofie, Jing Yie Lee, Yong Kit Chin, Zahaludin Amir-Danial, Addenan Asyiqin, Basri Lukman, Mark R. Liles, Mohammad Noor Azmai Amal
Summary: The study identified A. dhakensis 1P11S3 as the only strain able to utilize myo-inositol as a sole carbon source among Aeromonas isolates in Malaysia. While this strain demonstrated some virulence in an experimental challenge test, it exhibited lower pathogenicity compared to other non-myo-inositol utilizing strains. Further research is needed to understand the potential impact of myo-inositol utilization on the pathogenesis of Aeromonas spp.
Article
Fisheries
Hadeer A. Youssef, Hala F. Ayoub, Eman Soror, Aya F. Matter
Summary: This study developed and evaluated live and inactivated vaccines for Aeromonas veronii pathogenicity in Nile tilapia. The results showed that the live vaccine A(HY1) had the best protective efficacy against the highly pathogenic strain A(HY2).
AQUACULTURE INTERNATIONAL
(2023)
Article
Fisheries
Lekshmi Haridas, Mulloorpeedikayil Rosalind George, Kollanoor Riji John, Mohideenpitchai Mohamed Mansoor, Muthumariappan Selvamageswaran, Paulraj Mageshkumar
Summary: The study describes an experimental challenge of Nile tilapia using tilapia lake virus and focuses on the expression profile of immune genes IPS-1 and TLR-7. The results show that IPS-1 gene is downregulated in the liver during early infection, while slightly upregulated in the kidney and brain. TLR-7 gene is downregulated in the liver and upregulated in the brain.
Article
Fisheries
Hala F. Ayoub, Eman Y. Tohamy, Hediat M. Salama, Sara S. Mohamed
Summary: The supplementation of CCE and Nano-Se significantly enhanced the immune response and resistance to A. sobria in Nile tilapia. Furthermore, Nano-Se had a more pronounced effect on antioxidant enzymes compared to CCE.
AQUACULTURE RESEARCH
(2021)
Article
Agriculture, Dairy & Animal Science
Doaa Ibrahim, Sara E. Shahin, Leena S. Alqahtani, Zeinab Hassan, Fayez Althobaiti, Sarah Albogami, Mohamed Mohamed Soliman, Rania M. S. El-Malt, Helal F. Al-Harthi, Nada Alqadri, Mohamed Tharwat Elabbasy, Marwa Abd El-Hamid
Summary: This study investigates the effects of thymol and thymoquinone on the growth, immune response, antioxidant capacity, and resistance to Aeromonas sobria in Nile tilapia. The results show that the dietary inclusion of thymol and thymoquinone significantly improves the growth rate and feed conversion ratio of tilapia, and provides defense against A. sobria infection. Furthermore, the expression of genes related to digestion, antioxidant enzymes, inflammation, and autophagy is influenced by the dietary inclusion of thymol and thymoquinone. Overall, this study highlights the potential benefits of thymol and thymoquinone in enhancing fish productivity and health in aquaculture.
Article
Environmental Sciences
Mahmoud S. Gewaily, Mustafa Shukry, Marwa F. Abdel-Kader, Mohamed Alkafafy, Foad A. Farrag, Eman M. Moustafa, Hien Van Doan, Mohamed F. Abd-Elghany, Ahmed F. Abdelhamid, Azhar Eltanahy, Mahmoud A. O. Dawood
Summary: The study shows that LP20 can enhance the antioxidant capacity and immunity of Nile tilapia, alleviating inflammation caused by DLM and Aeromonas hydrophila infection.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Francis S. Legario, Casiano H. Choresca, Kathryn Grace, James F. Turnbull, Margaret Crumlish
Summary: This study characterized and profiled motile Aeromonas species recovered from sick tilapia farmed in the Philippines. The results showed that Aeromonas veronii is the main pathogen causing motile Aeromonas septicaemia in farmed tilapia, and it exhibits diverse genotypes, biochemical profiles, and antibiotic resistances.
JOURNAL OF APPLIED MICROBIOLOGY
(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
Physiology
Mohamed Hamed, Alaa G. M. Osman, Ahmed E. A. Badrey, Hamdy A. M. Soliman, Alaa El-Din H. Sayed
Summary: This study assessed the impact of microplastics on erythrocytes in Nile tilapia, revealing a significant increase in eryptosis, poikilocytosis, and nuclear abnormalities caused by microplastic exposure. Even after a recovery period, fish exposed to microplastics still showed higher levels of abnormalities compared to the control group.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Salem Hamad Almarri, Alshimaa A. Khalil, Abdallah Tageldein Mansour, Walaa El-Houseiny
Summary: The study found that the addition of custard apple leaf extract in the diet of Nile tilapia improved their growth performance, physiological status, and stress resistance. The extract was able to improve hematological parameters, vital organ functions, and redox status in the fish, as well as enhance their resistance against bacterial infection. Therefore, custard apple leaf extract has the potential to be used as a feed additive in Nile tilapia diets.
Article
Fisheries
Morteza Yousefi, Seyyed Morteza Hoseini, Baki Aydin, Ali Taheri Mirghaed, Evgeny Vladimirovich Kulikov, Stanislav Gennadievich Drukovsky, Sergey Borisovich Seleznev, Pavel Anatolyevich Rudenko, Seyed Hossein Hoseinifar, Hien Van Doan
Summary: The study involved two experiments to explore the anesthetic efficiency, hematological, and biochemical effects of thymol on Nile tilapia. Thymol was found to induce anesthesia at concentrations ranging from 20 to 100 mg L-1 within 56.3-491s. Anesthesia had no significant effects on various blood parameters, but led to significant changes in plasma cortisol, glucose, lactate, and other indicators. Thymol may induce less stress and oxidative stress compared to eugenol, but further research is needed for conclusive results.
Article
Fisheries
Yan Zhao, Yanling Wang, Lingyuan Song, Shuaishuai Li, Xiaowu Chen, Shoujie Tang, Jinliang Zhao
Summary: Under suitable environmental conditions, fish with a functional immune system displayed high disease resistance, growth rate, and reproductive activity. This study investigated the effects of chronic alkalinity stress on the immune response in Nile tilapia and found that long-term feeding of tilapia in low concentration carbonate water promoted immune function and reduced mortality from bacterial infection.
Article
Fisheries
Salah M. Aly, Mohamed E. Abou-El-Atta, Heba S. El-Mahallawy, Ahmed Elaswad, Fatma A. ElAbyad, Noha I. ElBanna
Summary: This study investigated the bacterial causes of ulcerative syndrome in Nile tilapia and the associated environmental stressors. Clinical, bacteriological, histopathological, and molecular techniques were used to identify bacteria (Aeromonas veronii biovar sobria and A. caviae), assess their antibiotic resistance, and analyze water quality parameters. Results indicated that water temperature and ammonia concentrations increased significantly in July and August, while pH levels were highest in August. Overall, improving water quality is important for maintaining the health of farmed fish.
AQUACULTURE INTERNATIONAL
(2023)
Article
Fisheries
Rowida E. Ibrahim, Shimaa A. Amer, Khaled Yehia Farroh, Naif A. Al-Gabri, Amany Ahmed, Doaa A. El-Araby, Shaimaa A. A. Ahmed
Summary: This study found that dietary supplementation with CVCN had a significant impact on the growth, antioxidant activity, immune status, and disease resistance of Nile tilapia fingerlings. The highest concentration of CVCN (400 mg/kg diet) showed the best results in improving these factors.
Article
Biochemistry & Molecular Biology
Shuai Zhang, Lang Xie, Shuqing Zheng, Baoyue Lu, Wenjing Tao, Xiaoshuang Wang, Thomas D. Kocher, Linyan Zhou, Deshou Wang
Summary: This study conducted genome-wide identification and comprehensive analysis of the SDR superfamily in 29 animal species, revealing that the number of SDR genes in animals increased with whole genome duplication, and vertebrate SDRs were clustered into five categories. Tandem duplication of specific SDR genes was observed in different animal groups, and sexually dimorphic expression of certain SDRs in adult fish gonads was confirmed by in situ hybridization and qPCR, suggesting their potential roles in steroidogenesis and gonadal differentiation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)