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Wssv susceptibility in the early life stages of penaeus vannamei shows relationship with bodyweight. J Invertebr Pathol 2023; 198:107912. [PMID: 36924987 DOI: 10.1016/j.jip.2023.107912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023]
Abstract
White Spot Syndrome Virus (WSSV) continues to cause considerable loss to shrimp farmers globally with frequent outbreaks even in specific pathogen free Peneaus vannamei. Our studies showed that the bodyweight (BW) of PL has a bearing on their susceptibility to the virus. To test this hypothesis, PL of the same age group and family were grouped according to BW (10-20, 30-40, and 50-60 mg) and challenged through immersion route with two viral doses (106 and 107 virus copies/L of water). It was observed that the PL became susceptible to WSSV at ≥50 mg BW. In the 50-60 mg PL group, the higher challenge dose shows a sharp mortality curve with 100% mortality at 10 days post immersion, while the lower dose shows a steady increase in cumulative mortality that reaches 100% on the 13th day post immersion. The study also brings out that an in vivo viral load of approximately 3.5 to 4.5×107WSSV copies/100 ng shrimp DNA results in mortality. This is the first report on the relationship between BW and WSSV susceptibility in shrimp PL. Also reported here is a quantitative assessment of WSSV infection in P. vannamei PL and an optimized challenge protocol.
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Feng SY, Liang GF, Xu ZS, Li AF, Du JX, Song GN, Ren SY, Yang YL, Jiang G. Meta-analysis of antiviral protection of white spot syndrome virus vaccine to the shrimp. FISH & SHELLFISH IMMUNOLOGY 2018; 81:260-265. [PMID: 30010021 DOI: 10.1016/j.fsi.2018.07.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 06/08/2023]
Abstract
Currently, white spot syndrome virus (WSSV) is one of the most serious pathogens that impacts shrimp farming around the world. A WSSV vaccine provides a significant protective benefit to the host shrimp. Although various types of vaccines against WSSV have emerged, the immune effects among them were not compared, and it remains unclear which type of vaccine has the strongest protective effect. Meanwhile, due to the lack of effective routes of administration and immunization programs, WSSV vaccines have been greatly limited in the actual shrimp farming. To answer these questions, this study conducted a comprehensive meta-analysis over dozens of studies and compared all types WSSV vaccines, which include sub-unit protein vaccines, whole virus inactivated vaccines, DNA vaccines and RNA-based vaccines. The results showed that the RNA-based vaccine had the highest protection rate over the other three types of vaccines. Among the various sub-unit protein vaccines, VP26 vaccine had the best protective effects than other sub-unit protein vaccines. Moreover, this study demonstrated that vaccines expressed in eukaryotic hosts had higher protection rates than that of prokaryotic systems. Among the three immunization modes (oral administration, immersion and injection) used in monovalent protein vaccines, oral administration had the highest protection rate. In natural conditions, shrimp are mostly infected by the virus orally. These results provide a guide for exploration of a novel WSSV vaccine and help facilitate the application of WSSV vaccines in shrimp farming.
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Affiliation(s)
- Shu-Ying Feng
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Gao-Feng Liang
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Zheng-Shun Xu
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Ai-Fang Li
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Jing-Xia Du
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Guan-Nan Song
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Shai-Yu Ren
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Yu-Lin Yang
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Guanglong Jiang
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, IN, 46202, USA; Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, IN, 46202, USA.
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Zhao C, Fu H, Sun S, Qiao H, Zhang W, Jin S, Jiang S, Xiong Y, Gong Y. Experimental inoculation of oriental river prawn Macrobrachium nipponense with white spot syndrome virus (WSSV). DISEASES OF AQUATIC ORGANISMS 2017; 126:125-134. [PMID: 29044042 DOI: 10.3354/dao03165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The oriental river prawn Macrobrachium nipponense is an economically important species that is widely farmed in China. White spot syndrome virus (WSSV) is one of the most devastating pathogens of the cultured shrimp Litopenaeus vannamei, responsible for massive loss of its commercial products worldwide. We investigated the infectivity and pathogenicity of WSSV in adult M. nipponense using standardized conditions for L. vannamei. The median lethal dose of WSSV in adult M. nipponense was 103.84±0.06 copies g-1, which was about 1000-fold higher than in L. vannamei (100.59±0.22 copies g-1). WSSV was detected by 2-step PCR in the gills, hepatopancreas, muscle, stomach, heart, gut, nerve, integument, pereopod, eyestalk, testis, and ovary of experimentally infected dead M. nipponense. Lesions were observed histologically following WSSV injection, showing basophilic intranuclear inclusion bodies in the hepatopancreas and subsequently in the gills. The clearance of WSSV was observed in hepatopancreas and gills at 48 and 96 h post-inoculation, respectively. No histological lesions were detected in muscle from 0-96 h post-injection. The results show that the oriental river prawn M. nipponense can be infected by WSSV and the infections are self limiting over time; therefore, M. nipponense may serve as a useful model for studying resistance to WSSV.
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Affiliation(s)
- Caiyuan Zhao
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
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Chaudhari A, Pathakota GB, Annam PK. Design and Construction of Shrimp Antiviral DNA Vaccines Expressing Long and Short Hairpins for Protection by RNA Interference. Methods Mol Biol 2016; 1404:225-240. [PMID: 27076302 DOI: 10.1007/978-1-4939-3389-1_16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
DNA vaccines present the aquaculture industry with an effective and economically viable method of controlling viral pathogens that drastically affect productivity. Since specific immune response is rudimentary in invertebrates, the presence of RNA interference (RNAi) pathway in shrimps provides a promising new approach to vaccination. Plasmid DNA vaccines that express short or long double stranded RNA in vivo have shown protection against viral diseases. The design, construction and considerations for preparing such vaccines are discussed.
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Affiliation(s)
- Aparna Chaudhari
- ICAR-Central Institute of Fisheries Education, Versova, Andheri West, Mumbai, 400061, India.
| | - Gireesh-Babu Pathakota
- ICAR-Central Institute of Fisheries Education, Versova, Andheri West, Mumbai, 400061, India
| | - Pavan-Kumar Annam
- ICAR-Central Institute of Fisheries Education, Versova, Andheri West, Mumbai, 400061, India
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