| search for effective natural enemies of tetranychus evansi (acari: tetranychidae) in northwest argentina. | the mite tetranychus evansi baker & pritchard (tetranychidae) probably originated in south america. because of its importance as a tomato pest in africa, an extensive project has been conducted to detect potentially effective natural enemies in south america for the classical biological control of the pest in africa. a search for the natural enemies of t. evansi was conducted in the province of tucumán, northwestern argentina, in december 2004, and this report describes the results. one hundred ... | 2007 | 17851767 |
| risk assessment of cry toxins of bacillus thuringiensis on the predatory mites euseius concordis and neoseiulus californicus (acari: phytoseiidae). | genetically modified plants carrying cry toxins of bacillus thuringiensis (bt) are widely used for pest control. possible adverse effects as a result of the use of this control technique to non-target organisms is still a concern; however, few studies have addressed the effects of bt crops on phytoseiid predatory mites. phytoseiids are important for the natural control of phytophagous mites, but they can also feed on pollen, plant exudates, etc. thus, phytoseiids may ingest bt toxins through sev ... | 2013 | 23053912 |
| [populational dynamics of mites (acari) in the mate-tea tree (ilex paraguariensis st. hil.: aquifoliaceae)]. | the objective of this research was to analyze the populational dynamic of the phytophagous mites, as well as that of their natural predators in the plants ilex paraguariensis st. hil. (aquifoliaceae). this study was conduced in dois vizinhos, state of paraná, from august 2001 to july 2002. leaf samples from different parts of the plant were taken and the number of mites was registered. during this period, two species of phytophagous mites, dichopelmus notus keifer, and oligonychus yothersi (mcgr ... | 2006 | 17352075 |
| sequence variation of ribosomal internal transcribed spacers (its) in commercially important phytoseiidae mites. | preliminary work is needed to assess the usefulness of different markers at different taxonomic scales when a new group is analyzed, such as the commercially important phytoseiidae mites. we investigate here the level of sequence variation of the nuclear ribosomal spacers its 1 and 2 and the 5.8s gene in six species of phytoseiidae: neoseiulus culifornicus, n. fallacis, euseius concordis, metaseiulus occidentalis, typhlodromus pyri and phytoseiulus persimilis. as expected, the 5.8s gene (148 bas ... | 1999 | 10668860 |
| reproductive compatibility between mite populations previously identified as euseius concordis (acari: phytoseiidae). | the objective of the present research is to study the reproductive compatibility between populations of predatory mites previously identified as euseius concordis (chant) based on morphological characteristics. colonies of these mite populations were established in the lab with specimens collected from different localities and host plants. reproductive compatibility was evaluated through crosses and backcrosses within and between populations and the subsequent observation of females' oviposition ... | 2004 | 15176732 |
| suitability of the predatory mites iphiseiodes zuluagai and euseius concordis in controlling polyphagotarsonemus latus and tetranychus bastosi on jatropha curcas plants in brazil. | one of the most promising plant species for biofuel production in brazil is the physic nut jatropha curcas. major phytosanitary problems include the attack of two pest mite species, the broad mite polyphagotarsonemus latus and the spider mite tetranychus bastosi. owing to pesticide-related problems, there is an increasing demand for sustainable environmental-friendly control methods such as biological control. in this study we evaluated the suitability of the predatory mite species iphiseiodes z ... | 2011 | 20844929 |
| functional response of euseius concordis to densities of different developmental stages of the cassava green mite. | both prey density and developmental stage of pests and natural enemies are known to influence the effectiveness of biological control. however, little is known about the interaction between prey density and population structure on predation and fecundity of generalist predatory mites. here, we evaluated the functional response (number of prey eaten by predator in relation to prey density) of adult females and nymphs of the generalist predatory mite euseius concordis to densities of different dev ... | 2014 | 24867060 |
| susceptibility of euseius concordis (mesostigmata: phytoseiidae) to pesticides used in citrus production systems. | euseius concordis (chant) is an important predatory mite found in citrus orchards. the toxicity of 19 pesticides used in citrus orchards on biological and population parameters of this mite was assessed. our results indicated that formetanate hydrochloride, dimethoate and phosmet were highly harmful (100% mortality) to e. concordis. carbosulfan, diflubenzuron, fenpropathrin, gamma-cyhalothrin, imidacloprid, lambda-cyhalothrin, lambda-cyhalothrin + thiamethoxam, mineral and vegetable oils, spinos ... | 2017 | 28866797 |
| rearing system for the predatory phytoseiid euseius concordis (acari: phytoseiidae). | several species of predatory mites, especially those of the family phytoseiidae, are potentially useful for the control of pest mites and insects. among the phytoseiids, euseius concordis (chant), a species commonly found in south america, has been studied for possible use as biological control agent of pest mites. given that euseius species are known to feed on plant leaves and on pollen, the objective of this study was to determine plant species and pollen sources suitable to establish a pilot ... | 2018 | 29374843 |
| definition of the concordis species group of the genus euseius (acari: phytoseiidae), with a morphological reassessment of the species included. | phytoseiidae (acari) is the best known family of predatory mites. within this family, euseius wainstein is one of the largest genera. the species of this genus have generalist feeding behavior, including in their diet mites and pollen. some studies have demonstrated the potential of certain euseius species to control pest mites. euseius concordis (chant) has been mentioned in the literature as potentially useful for the control of the tomato russet mite, aculops lycopersici (tryon) (eriophyidae) ... | 2015 | 26624744 |
| effect of insecticides and fungicides on the interaction between members of the mite families phytoseiidae and stigmaeidae on citrus. | the study was carried out to evaluate the effect of some insecticides and fungicides on the interaction between predacious mites of the families phytoseiidae and stigmaeidae on citrus. euseius citrifolius denmark and muma, euseius concordis (chant) (phytoseiidae), and agistemus aff. bakeri (stigmaeidae) were the most abundant species of predacious mites. no significant reduction of the population of stigmaeids was detected following the pesticide treatment. on the contrary, the population of tho ... | 2001 | 12455872 |
| [occurrence and fluctuation of mite populations associated with rubber tree crop neighbor of fragments of cerrado]. | the basic knowledge of the seasonal occurrence of mites can supply data for elaboration of programs of ecological management to be implanted with success in the future. the objective of this study was to determine the species richness and the seasonality of mites present in two areas of rubber tree crops neighboring to native areas in itiquira, mt. along one year, 25 quantitative samplings were accomplished in rubber tree crop neighboring to two fragments of cerrado (cerradão and mata ripária). ... | 2007 | 17420870 |
| population dynamics of phytophagous and predaceous mites on coffee in brazil, with emphasis on brevipalpus phoenicis (acari: tenuipalpidae). | the objective of this work was to study the population dynamics of brevipalpus phoenicis (geijskes) and predaceous mites (phytoseiidae and stigmaeidae), as well as the interactions among these mite species, in a coffee plantation in the state of são paulo, brazil. tydeids were also evaluated because of the high frequency of these mites on coffee plants. samples of leaves, branches and fruits were taken fortnightly, from april 2001 to june 2003, from plants randomly chosen in the coffee plantatio ... | 2008 | 18404408 |
| seasonal variation in the populations of polyphagotarsonemus latus and tetranychus bastosi in physic nut (jatropha curcas) plantations. | studies on the seasonal variation of agricultural pest species are important for the establishment of integrated pest control programs. the seasonality of pest attacks on crops is affected by biotic and abiotic factors, for example, climate and natural enemies. besides that, characteristics of the host plant, crop management, location and the pests' bioecology also affect this seasonality. the mites polyphagotarsonemus latus (prostigmata: tarsonemidae) and tetranychus bastosi (prostigmata: tetra ... | 2015 | 25910991 |
| factitious food for mass production of predaceous phytoseiid mites (acari: phytoseiidae) commonly found in brazil. | phytoseiid mites are commonly used as biological control agents of mite and small insect pests. to facilitate the production of phytoseiids, alternative food sources have been evaluated. the aim of this study was to evaluate the suitability of different food sources for the rearing of the phytoseiids amblyseius tamatavensis blommers, euseius concordis (chant) and neoseiulus anonymus (chant and baker). this study evaluated the levels of oviposition of these predators when fed with 15 astigmatina ... | 2016 | 27631763 |