Virus Research 238 (2017) 148–155 Contents lists available at ScienceDirect Virus Research journal homepage: www.elsevier.com/locate/virusres Discovery of a novel Picornavirales, Chequa iﬂavirus, from stressed redclaw MARK crayﬁsh (Cherax quadricarinatus) from farms in northern Queensland, Australia a,b a a, Kitikarn Sakuna , Jennifer Elliman , Leigh Owens College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, 4811, Australia Faculty of Veterinary Science, Rajamangala University of Technology Srivijaya, 80240, Thailand ARTICLE I NFO ABSTRACT Keywords: In 2014, northern Queensland crayﬁsh from farms aﬀected by particularly transportation and translocation Iﬂavirus stress, started to die with mortality reaching 20–40% after about three weeks and then mortalities subsided. Redclaw crayﬁsh Crayﬁsh from 1 farm had 65% mortalities within 11 weeks. With histological examination of broodstock and Cherax quadricarinatus juveniles, the muscle ﬁbres were fractured with haemocytic inﬁltration reminiscent of viral infection or vitamin Stressed E/selenium deﬁciencies. Sequence dependent and independent PCRs failed to identify a viral aetiology. Chequa iﬂavirus However, the whole transcriptomes of a case crayﬁsh and an unaﬀected crayﬁsh from a diﬀerent population Picornavirales were assembled producing over 500,000 contigs. The complete sequence of a positive sense, single stranded RNA virus (+ve ssRNA virus; 9933 bp) and the large
Virus Research – Elsevier
Published: Jun 15, 2017
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