A critical review on some closely related species of Tetranychus sensu stricto (Acari: Tetranychidae) in the public DNA sequences databases

• Published in: Experimental & applied acarology Vol. 55; no. 1; pp. 1 - 23
• Main Authors: de Mendonça, Renata S., Navia, Denise, Diniz, Ivone R., Auger, Philippe, Navajas, Maria
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.09.2011; Springer; Springer Nature B.V; Springer Verlag
• Subjects: Acari; Animal biology; Animal Ecology; Animal Genetics and Genomics; Animal Systematics/Taxonomy/Biogeography; Animals; Arachnida; Biological and medical sciences; Biomedical and Life Sciences; Databases, Genetic - standards; Deoxyribonucleic acid; DNA; DNA, Ribosomal Spacer - genetics; Electron Transport Complex IV - genetics; Entomology; Fundamental and applied biological sciences. Psychology; Invertebrates; Life Sciences; Mites; Phylogeny; Tetranychidae; Tetranychidae - classification; Tetranychidae - genetics; Tetranychus; Tetranychus urticae; Cytochrome Oxidase 1; Spider mites; Internal Transcribed Spacer, ITS; Tetranychoidea; Molecular systematics; Misidentification; Tetranychidae; Enzyme; Cytochrome-c oxidase; ITS; Internal Transcribed Spacer; Acariformes; Arachnida; Pest; Acari; Tetranychus; Actinedida; Arthropoda; DNA; Database; Critical study; Oxidoreductases; Invertebrata; COI; misidentification; spider mites; internal transcribed spacer; conflits d'intérêts; tétranyques; tetranychoidea; systématique moléculaire; molecular systematics; cytochrome oxidase 1; erreur d'identification
• ISSN: 0168-8162; 1572-9702
• DOI: 10.1007/s10493-011-9453-5

Taxonomic misidentification of the specimens used to obtain DNA sequences is a growing problem reported for different groups of organisms, which threatens the utility of the deposited sequences in public DNA databases. This paper provides new evidence of misidentifications in molecular DNA public databases in phytophagous mites of the Tetranychidae family belonging to the group Tetranychus ( Tetranychus ). Several species in this group are of economic and quarantine importance in agriculture and among them Tetranychus urticae , a highly polyphagous mite causing outbreaks in many crops worldwide, is certainly the most studied. We analyzed and evaluated the identity of 105 GenBank accessions of ITS2 rDNA and 138 COI mtDNA sequences which were deposited as T. urticae and those of 14 other taxa morphologically closely related to Tetranychus sensu stricto. In addition, ITS2 and COI sequences of 18 T. urticae samples collected for this study and identified by morphological criteria, were generated and included in the analyzed dataset. Among the deposited sequences in the GenBank database, numerous cases of apparently mistaken identities were identified in the group Tetranychus s. str., especially between T. urticae , T. cinnabarinus , T. kanzawai and T. truncatus . Unreliable sequences (misidentified or dubious) were estimated at nearly 30%. In particular the analysis supports the invalidity of the controversial species status of T. cinnabarinus . More generally, it highlights the need of using combined morphological and molecular approaches to guarantee solid species diagnostics for reliable sequence accessions in public databases.