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Title

Effectiveness of the postponed isolation (post-frozen isolation) method for PCR-quality Sarcoptes mite gDNA

AuthorsAlasaad, Samer ; Soglia, D.; Maione, Sabatino; Sartore, S.; Soriguer, Ramón C. ; Pérez, Jesús M.; Rasero, Mario; Rossi, Luca
Issue Date2009
PublisherKluwer Academic Publishers
CitationExperimental and Applied Acarology 47: 173- 178 (2009)
AbstractThe aim of the present study was to assess whether individual Sarcoptes mites collected from frozen skin ('postponed isolation' method) are suitable sources of PCR-quality genomic DNA, and to test the effectiveness of this method in comparison with the 'direct isolation' method, often used through force of habit. Hundreds of single Sarcoptes scabiei samples, resulting from direct (live) or postponed (post-frozen) isolation, were tested using a ∼450 bp product (ITS-2) and multi-locus 10x genotyping with microsatellite markers. No statistical difference in yield of soluble DNA was found between the two isolation methods. Nevertheless, 19% of the reactions were classified as failed preparations in the direct isolation method, whereas the rate of unsuccessful reactions was 34% in the postponed isolation method. Consequently, post-frozen isolation is suitable and recommendable for Sarcoptes mite gDNA preparation, particularly when performing a balancing act among safety, practicability and profitability. These results have implications for mite collection for DNA extraction, and hence the needed wider leap of Sarcoptes into the genetic era. © 2008 Springer Science+Business Media B.V.
URIhttp://hdl.handle.net/10261/56583
DOI10.1007/s10493-008-9196-0
Identifiersdoi: 10.1007/s10493-008-9196-0
issn: 0168-8162
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