Genome size and base composition in Oryzaephilus surinamensis (Coleoptera: Sylvanidae) and differences between native (feral) and silo pest populations in Israel

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Authors

KAMAL Sharaf HOROVÁ Lucie PAVLÍČEK Tomáš EVIATAR Nevo BUREŠ Petr

Year of publication 2010
Type Article in Periodical
Magazine / Source Journal of Stored Products Research
MU Faculty or unit

Faculty of Science

Citation
Web http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T8Y-4X9NCD5-1&_user=835458&_coverDate=01%2F31%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1249688928&_rerunOrigin=scholar.google&_acct=C000045159&_version
Field Botany
Keywords Genome size; AT/CG; Oryzaephilus surinamensis; Wolbachia
Description In this study, flow cytometry was used for assessing and comparing the genome size (GS) and the whole genome base composition (AT/GC ratio) of the saw toothed grain beetle Oryzaephilus surinamensis (L.). In addition, the presence and frequency of endosymbiotic Wolbachia bacteria was studied. The haploid GS was estimated to lie within the range from 151.5 to 154 Mbp in O. surinamensis, making it the smallest value of haploid GS known among beetles. Furthermore, it was found that in eight silo pest populations GS was significantly smaller than in eight feral (native) populations obtained from fallen oak acorns. The ability of O. surinamensis to colonize different habitats globally could be connected with an unusually ATrich (for an invertebrate) genome (ATbase content ranging from 68 to 76%). Native (feral) populations of O. surinamensis appear to have genetically diverged from the storage-pest populations tested.
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