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RNA viruses found in the varroa mite, Varroa destructor by transcriptome sequencing
The varroa mite, Varroa destructor, is a small ectoparasitic mite which attacks honeybee, Apis mellifera, and also known to harbor small RNA viruses which infect honeybees. To survey the transcriptome of varroa mite, total RNA of female adult mites was subjected to RNA-seq to construct an in silico cDNA library. 2 × 8.3 Gbase of quality filtered paired-end nucleotide sequences were obtained to construct 28,302 of protein-coding contigs by de novo assembly, and subsequent BLAST search revealed the viruses infect honeybee or associated with varroa mites. Six of the contigs showed high sequence identity to Iflavirus, picorna-like virus, rhabdovirus, and macula-like virus were discovered. It implies that the viral flora in varroa mites and honeybees might be more complex than previously studied, and suggests the importance of further virome studies for better understanding of honeybee health.
