An Overview of Chilli Thrips, Scirtothrips dorsalis (Thysanoptera: Thripidae) Biology, Distribution and Management
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Key for Identification of Adult Female of Scirtothrips dorsalis (Thysanoptera: Thripidae) Based on External Morphology
Thrips are minute insects and belong to the family thripidae of the order Thysanoptera. Thrips are less than two millimeters long, slender like and agile insects. Head of Scirtothrips dorsalis is pale in colour longer than broad, 217.5-237 μm long and 175-194 μm wide across the eyes. Eyes are redish in colour, 75-89 μm long and 63-70 μm wide at the middle and three occili are arranged triangula...
متن کاملSilicon APPlicATionS hAve MiniMAl effecTS on ScirtothripS dorSaliS (ThYSAnoPTeRA: ThRiPiDAe) PoPUlATionS on PePPeR PlAnT, capSicum annum l
Silicon (Si) is the second most abundant element in soils, and at elevated concentration levels in plant tissue Si is reported to improve plant resistance to a range of biotic and abiotic stresses. in the present study, Si solutions at 100, 300 or 500 mg l-1 made from potassium silicate (K2Sio3) were applied as foliar sprays or soil drenches to pepper (capsicum annum l.) plants, and their effec...
متن کاملEvaluation of Entomopathogenic Fungi Against Chilli Thrips, Scirtothrips dorsalis
Commercial strains of entomopathogenic fungi were evaluated for control of chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), an invasive pest of ornamental and vegetable plants in the Caribbean and southeastern United States. In laboratory assays, LC50 values against adult S. dorsalis were 5.1 × 10(4) CFU/mL for Beauveria bassiana GHA, with higher values 3.1 × 10(5) for Metar...
متن کاملDevelopment of a Ribosomal DNA ITS2 Marker for the Identification of the Thrips, Scirtothrips dorsalis
The thrips Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) is an invasive pest that poses a significant economical threat to U.S. agriculture and trade. In this study, DNA sequence data and polymerase chain reaction (PCR) were utilized to develop a molecular diagnostic marker for S. dorsalis. The DNA sequence variation from the internal transcribed spacer 2 (ITS2) region of nuclear ribosom...
متن کاملRelationships Among Species of Scirtothrips (Thysanoptera: Thripidae, Thripinae) Using Molecular and Morphological Data
Results of analyses of molecular sequence (COI, 28S-D2) and morphology (21 character states) data, both alone and combined, were used to determine relationships between 18 species of Scirtothrips (Thysanoptera: Thripidae, Thripinae). Two species of Neohydatothrips from Panama were used as the outgroup. Five major pest Scirtothrips were included in these analyses: S. aurantii, S. citri, S. dorsa...
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