| functional and numerical responses of stethorus gilvifrons mulsant feeding on strawberry spider mite, tetranychus turkestani ugarov and nikolski. | laboratory experiments were conducted to measure the functional and numerical responses of stethorus gilvifrons mulsant feeding on tetranychus turkestani ugarov and nikolski. adult ladybirds were isolated singly for 24 h in 8 cm petri dishes with either 4, 8, 12, 24, 48 or 96 adult females of t. turkestani. results showed a typical type 3 functional response, with up to 65.2 preys attacked when 96 preys were provided. the rate of attack and handling time were 0.0012 and 0.415 (days), respectivel ... | 2007 | 19093534 |
| permanent genetic resources added to molecular ecology resources database 1 january 2009-30 april 2009. | this article documents the addition of 283 microsatellite marker loci to the molecular ecology resources database. loci were developed for the following species: agalinis acuta; ambrosia artemisiifolia; berula erecta; casuarius casuarius; cercospora zeae-maydis; chorthippus parallelus; conyza canadensis; cotesia sesamiae; epinephelus acanthistius; ficedula hypoleuca; grindelia hirsutula; guadua angustifolia; leucadendron rubrum; maritrema novaezealandensis; meretrix meretrix; nilaparvata lugens; ... | 2009 | 21564911 |
| friend or foe?: a plant's induced response to an omnivore. | omnivorous natural enemies of herbivores consume plant-based resources and may elicit induced resistance in their host plant. a greater induction threshold for damage produced by omnivorous predators than for strict herbivores might be expected if omnivore performance is enhanced on noninduced plants, allowing them to reduce future levels of herbivory. currently, it is not known if a plant responds to feeding by omnivorous predators and by herbivores similarly. to examine this question, we chose ... | 2007 | 17540074 |
| its2 sequences as barcodes for identifying and analyzing spider mites (acari: tetranychidae). | the use of dna barcodes, short dna sequences from a standardized region of the genome, has recently been proposed as a tool to facilitate species identification and discovery. here we show that second internal transcribed spacer of nuclear ribosomal dna (rdna-its2) barcodes effectively discriminate among 16 species of spider mites (acari: tetranychidae) from israel. the barcode sequences of each species were unambiguously distinguishable from all other species and formed distinct, nonoverlapping ... | 2007 | 17347920 |
| toxicity of three acaricides to the predatory mite, neoseiulus bicaudus (acari: phytoseiidae) and their impact on the functional response to tetranychus turkestani (acari: tetranychidae). | the use of chemical pesticides particularly acaricides can reduce the control efficacy of natural enemies. the objectives of this study were 1) to evaluate the toxicity of three acaricides to the phytoseiid mite neoseiulus bicaudus (acari: phytoseiidae) by spraying acaricides on n. bicaudus adult females and 2) to determine the effect of these acaricides on the functional response of different stages of n. bicaudus to the prey tetranychus turkestani ugarov & nikolski (acari: tetranychidae). the ... | 2017 | 28962002 |
| functional response and prey preference of neoseiulus bicaudus (mesostigmata: phytoseiidae) to three important pests in xinjiang, china. | knowledge about the prey preference of polyphagous predators is important for determining their ability to suppress pest insects. tetranychus truncatus (tetranychidae), tetranychus turkestani (tetranychidae), and thrips tabaci (thripidae) often coexist in crops. neoseiulus bicaudus (wainstein) is a native predatory mite that was recently observed in the xinjiang uygur autonomous region of northwest china. the objective of this study was to assess the potential of n. bicaudus as a bio-control age ... | 2017 | 28398551 |
| asymmetric reproductive interference between two closely related spider mites: tetranychus urticae and t. turkestani (acari: tetranychidae). | tetranychus turkestani ugarov and nikolskii and tetranychus urticae koch rf (red form) (acari: tetranychidae) are closely related species. previously, the two species were found in separate agricultural habitats in israel. here, additional collections were undertaken and mixed populations of the two species were found. manipulation experiments were conducted in order to test whether sexual interactions occur when t. turkestani and t. urticae rf share the same host. interspecific crosses showed t ... | 2009 | 19160063 |