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- W2321819259 abstract "DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 96:21-27 (2011) - DOI: https://doi.org/10.3354/dao02374 Natural host-range and experimental transmission of Laem-Singh virus (LSNV) T. Sathish Kumar1, P. Krishnan2, M. Makesh1, A. Chaudhari1, C. S. Purushothaman1, K. V. Rajendran1,* 1Central Institute of Fisheries Education (CIFE), Panch Marg, Off Yari Road, Versova, Andheri (W), Mumbai 400061, India 2Central Agricultural Research Institute, Port Blair, Andaman & Nicobar Islands 744101, India *Email: rajendrankv@hotmail.com ABSTRACT: Slow growth caused by viral diseases has become a major constraint in shrimp aquaculture. Laem-Singh virus (LSNV), a positive-sense single-stranded RNA (ssRNA) virus, has been identified in Penaeus monodon showing slow growth syndrome. To examine the host-range and transmission modes of the virus, 6 species of penaeid shrimp of varying life stages, sourced from the wild and from farms, as well as juvenile mud crabs Scylla serrata, were screened using RT-nested PCR. LSNV was detected in P. monodon, Fenneropenaeus merguiensis, Metapenaeus dobsoni, and Litopenaeus vannamei, but not in F. indicus, Marsupenaeus japonicus or S. serrata. LSNV was most prevalent in P. monodon followed by M. dobsoni, F. merguiensis, and L. vannamei, and real-time quantitative RT-PCR (qRT-PCR) showed that LSNV infection loads were highest in P. monodon, followed by L. vannamei, M. dobsoni, and F. merguiensis. The nucleotide sequence of the LSNV RdRP gene fragment amplified by RT-nested PCR was highly conserved (99% identity) across these 4 penaeid species. LSNV was detected in both small and normal-sized P. monodon collected from the same pond. In experimental infections of both P. monodon and S. serrata, LSNV infection loads increased over time. The present study extends the known natural penaeid host-range and geographical distribution of LSNV and shows for the first time the potential susceptibility of S. serrata. KEY WORDS: Laem-Singh virus (LSNV) · Penaeid shrimp · Penaeus monodon · PCR · Real-time PCR · Host-range · Experimental transmission Full text in pdf format PreviousNextCite this article as: Sathish Kumar T, Krishnan P, Makesh M, Chaudhari A, Purushothaman CS, Rajendran KV (2011) Natural host-range and experimental transmission of Laem-Singh virus (LSNV). Dis Aquat Org 96:21-27. https://doi.org/10.3354/dao02374 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 96, No. 1. Online publication date: August 29, 2011 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2011 Inter-Research." @default.
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- W2321819259 title "Natural host-range and experimental transmission of Laem-Singh virus (LSNV)" @default.
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