| population studies of arthropods on melia azedarach in seville (spain), with special reference to eutetranychus orientalis (acari: tetranychidae) and its natural enemies. | eutetranychus orientalis has become an important pest of the ornamental tree melia azedarach in the city of seville (spain). trees suffer total defoliation at the end of summer. studies were conducted in a regular plantation of this tree in the miraflores park in 2008 and 2009, to determine the arthropod faunal composition, with particular interest in the possible natural enemies of e. orientalis. eutetranychus orientalis accounted for 98.3% of the arthropods found on the leaflets. two species o ... | 2011 | 21755411 |
| isolation and characterization of polymorphic microsatellite markers in tetranychus urticae and cross amplification in other tetranychidae and phytoseiidae species of economic importance. | tetranychus urticae koch is a cosmopolitan phytophagous mite considered as the most polyphagous species among spider mites. population genetic studies using molecular markers such as microsatellites have proven to be extremely informative to address questions about population structure, phylogeography and host preferences. the aim of this study was to increase the available molecular tools to gain insight into the genetic structure of t. urticae populations of citrus orchards, which might help i ... | 2012 | 22349944 |
| can exotic phytoseiids be considered 'benevolent invaders' in perennial cropping systems? | numerous natural enemies were adopted worldwide for the control of major pests, including exotic phytoseiid species (acari: mesostigmata: phytoseiidae) that had been moved from continent to continent in protected and perennial agricultural systems. however, relatively fewer successes were recorded in perennial agricultural systems. in this manuscript we focus on the question: can and will exotic phytoseiids provide better pest control than indigenous species in perennial agricultural systems? to ... | 2013 | 22669275 |
| disentangling mite predator-prey relationships by multiplex pcr. | gut content analysis using molecular techniques can help elucidate predator-prey relationships in situations in which other methodologies are not feasible, such as in the case of trophic interactions between minute species such as mites. we designed species-specific primers for a mite community occurring in spanish citrus orchards comprising two herbivores, the tetranychidae tetranychus urticae and panonychus citri, and six predatory mites belonging to the phytoseiidae family; these predatory mi ... | 2015 | 25824504 |
| when do predatory mites (phytoseiidae) attack? understanding their diel and seasonal predation patterns. | predatory mites of the phytoseiidae family are considered one of the most important groups of natural enemies used in biological control. the behavioral patterns of arthropods can differ greatly daily and seasonally; however, there is a lack of literature related to phytoseiidae diel and seasonal predation patterns. the predatory activity of three phytoseiid species (two tetranychidae-specialists, phytoseiulus persimilis and neoseiulus californicus, and one omnivore, euseius stipulatus) that occ ... | 2017 | 28620988 |
| the quality of nonprey food affects cannibalism, intraguild predation, and hyperpredation in two species of phytoseiid mites. | generalist arthropod predators not only prey on herbivores but also may engage in competitive interactions by attacking and consuming conspecifics (cannibalism) or other predators (intraguild predation [igp] and hyperpredation). these types of interactions are quite common among predators used in biological control. although there is evidence that nonprey food relaxes cannibalism and igp, there is little information regarding the impact of the quality of the nonprey food. herein, we examined how ... | 2017 | 29182769 |
| intraguild predation between phytoseiid mite species might not be so common. | it is widely acknowledged that intraguild predation (igp) occurs frequently between species of phytoseiid mites. however, in the presence of a shared resource many species of phytoseiid mites considerably reduce, or even cease, predation on each other. that being the case, igp would then be minimal, or non-existent, and its theoretical effects on communities negligible. the aim of this work was two-fold. on the one hand, we aimed at determining the occurrence of igp between two species of phytos ... | 2016 | 26715542 |
| effects of euseius stipulatus on establishment and efficacy in spider mite suppression of neoseiulus californicus and phytoseiulus persimilis in clementine. | the two-spotted spider mite, tetranychus urticae, is one of the most problematic phytophagous pests in spanish clementine orchards. the most abundant predatory mites in this ecosystem are euseius stipulatus, phytoseiulus persimilis and neoseiulus californicus. euseius stipulatus is dominant but poorly adapted to utilize t. urticae as prey. it mainly persists on pollen and citrus red mite, panonychus citri. a recent study suggested that the more efficacious t. urticae predators p. persimilis and ... | 2010 | 19777356 |
| intraguild interactions between euseius stipulatus and the candidate biocontrol agents of tetranychus urticae in spanish clementine orchards: phytoseiulus persimilis and neoseiulus californicus. | spanish clementine orchards are frequently infested by the two-spotted spider mte tetranychus urticae. natural control of t. urticae is insufficient despite the presence of neoseiulus californicus and phytoseiulus persimilis. the phytoseiid community is dominated by the generalist euseius stipulatus which is poorly adapted to exploit t. urticae. having the intention to promote biological control of t. urticae by augmentative releases we were interested whether p. persimilis and n. californicus a ... | 2010 | 19517257 |
| alternative food improves the combined effect of an omnivore and a predator on biological pest control. a case study in avocado orchards. | ecological communities used in biological pest control are usually represented as three-trophic level food chains with top-down control. however, at least two factors complicate this simple way of characterizing agricultural communities. first, agro-ecosystems are composed of several interacting species forming complicated food webs. second, the structure of agricultural communities may vary in time. efficient pest management approaches need to integrate these two factors to generate better pred ... | 2009 | 19061535 |
| comparative life-history traits of three phytoseiid mites associated with tetranychus urticae (acari: tetranychidae) colonies in clementine orchards in eastern spain: implications for biological control. | the management of tetranychus urticae, a key pest of clementine trees, is mainly based on the use of acaricides. however, more environmentally safe measures, such as biological control, are being encouraged. life-history traits of the three most abundant phytoseiid mites associated with t. urticae on this crop (euseius stipulatus, phytoseiulus persimilis and neoseiulus californicus) were studied. the experiments were performed under laboratory conditions (25 degrees c, 80 +/- 5% rh and 16:8 h (l ... | 2009 | 18931925 |
| influence of selected fruit tree pollen on life history of euseius stipulatus (acari: phytoseiidae). | euseius stipulatus (athias-henriot) is a predatory mite widespread in the mediterranean region considered to be important for the biological control of spider mites in citrus orchards. development, survival and reproduction of this phytoseiid mite feeding on seven commercially obtained pollen were studied under constant laboratory conditions (20 +/- 1 degrees c, rh 65 +/- 5%, photoperiod 16l: 8d h). mites were kept individually at rearing units with ample quantity of almond (prunus amygdalus bat ... | 2005 | 16082919 |
| mite diversity (acari: tetranychidae, tydeidae, iolinidae, phytoseiidae) and within-tree distribution in citrus orchards in southern spain, with special reference to eutetranychus orientalis. | mite diversity of selected citrus orchards in andalusia (southern spain) was studied during 2002-2007. the following species were found: eutetranychus orientalis, tetranychus urticae, panonychus citri (tetranychidae), tydeus californicus, lorryia formosa (tydeidae), pronematus ubiquitus (iolinidae), euseius stipulatus, typhlodromus phialatus, neoseiulus californicus, euseius scutalis, phytoseiulus persimilis, paraseiulus talbii and neoseiulus cucumeris (phytoseiidae). eutetranychus orientalis wa ... | 2017 | 29022207 |
| comparative toxicity of pesticides in three phytoseiid mites with different life-style occurring in citrus: euseius stipulatus, neoseiulus californicus and phytoseiulus persimilis. | conservation and augmentative biological control strategies have been developed to take full advantage of the natural enemies that occur in spanish citrus orchards. among them, the predatory mites euseius stipulatus, neoseiulus californicus and phytoseiulus persimilis play an important role in the biological control of tetranychid mites. however, these predatory mites are often affected by pesticides and information about the side-effects of these products against these beneficial arthropods is ... | 2014 | 23979655 |