Population studies of arthropods on Melia azedarach in Seville (Spain), with special reference to Eutetranychus orientalis (Acari: Tetranychidae) and its natural enemies

González-Zamora, José E.; López, Cosme; Avilla, C.

doi:10.1007/s10493-011-9476-y

Cited by 10 publications

(6 citation statements)

References 24 publications

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“…In 2001, E. orientalis was recorded for the first time in Spain, in the province of Málaga. In 2002, the infested area was larger and the pest was observed in the provinces of Seville and Cordova (EPPO, 2004;González-Zamora et al, 2011;Vela et al, 2013). In the next years the pest continued to be observed in Andalusia (EPPO, 2005(EPPO, , 2007, and in 2010 its area of distribution had expanded to Murcia and south of Comunidad Valenciana too (EPPO, 2010).…”

Section: Spread Capacitymentioning

confidence: 99%

“…Negative effects on ornamental trees have been observed in the city of Seville (southern Spain) since 2003, involving the premature fall of leaves in Melia azedarach (González-Zamora et al, 2011). E. orientalis has been cited as an important pest of date palms in Egypt (El-Halawany et al, 2001).…”

Section: Conclusion Regarding Endangered Areasmentioning

confidence: 99%

“…In India, E. orientalis is considered a major pest of citrus, and also reported from pear, peach, ber, cucurbits and cotton (Singh and Raghuraman, 2011). The species has also caused significant damage on the ornamental tree, Melia azedarach, in the area of Seville in Spain, with a highest density of more than 300 mites per leaflet (González-Zamora et al, 2011). In addition, E. orientalis is considered as a potential invasive pest threatening the horticultural industry in Florida and Brazil (Klassen et al, 2002;Navia and Mendonça, 2005).…”

Section: 15mentioning

confidence: 99%

“…As described above, E. orientalis is almost always controlled effectively by its natural enemy complex. Therefore, natural control is expected to occur in unsprayed orchards unless plants are under abiotic stress (drought, high temperatures), which could be the case of ornamentals in some urban areas (Seville; González-Zamora et al, 2011).…”

Section: 6mentioning

confidence: 99%

“…The damage is mainly aesthetic and therefore particularly relevant on ornamentals. Infestations that are particularly severe, or on stressed trees, may cause leaf fall, die-back of branches and defoliation(Anagnou-Veroniki et al, 2008;González-Zamora et al, 2011;Ledesma et al, 2011).…”

mentioning

confidence: 99%

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Scientific Opinion on the risk to plant health posed by Eutetranychus orientalis Klein in the EU territory, with the identification and evaluation of risk reduction options

2013

EFS2

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The Panel on Plant Health conducted a pest risk assessment for Eutetranychus orientalis in the European Union (EU) and evaluated the effectiveness of phytosanitary measures in Council Directive 2000/29/EC. Entry through the plants for planting pathway is assessed as very likely, while entry through other pathways is estimated as moderately likely to unlikely owing to the different probability of transfer to a suitable host. Establishment is rated as very likely in Mediterranean areas and from moderately likely to unlikely in non-Mediterranean areas, because of unfavourable environmental conditions. Spread is rated as very likely because of the many ways the pest can spread, its polyphagy and the wide distribution of hosts. Impact is rated as minor, with an expected increase in the damage when populations of natural enemies are severely affected by control measures and/or when environmental conditions are stressful for the host. However, the lack of information resulted in an overall medium level of uncertainty. The Panel evaluated the effectiveness of current EU phytosanitary measures and concluded that the removal of E. orientalis from Annex IIAII would not affect its probability of entry, because the importation from Third countries of some host plants regulated for this pest (Citrus, Fortunella, Poncirus species and their hybrids) is prohibited in Annex III. However, spread could be affected since there would no longer be a requirement to inspect for this pest before issuing a plant passport (Annex V). However, since the regulated Rutaceae species constitute an extremely small proportion of the potential host plants of E. orientalis, the current phytosanitary measures are mostly ineffective in preventing further introduction and spread of E. orientalis in the EU. The Panel identified surveillance at the production site and treatment of the consignment as the most effective and technically feasible risk reduction options, particularly when applied together.

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Section: Spread Capacitymentioning

confidence: 99%

Section: Conclusion Regarding Endangered Areasmentioning

confidence: 99%

Section: 15mentioning

confidence: 99%

Section: 6mentioning

confidence: 99%

mentioning

confidence: 99%

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Scientific Opinion on the risk to plant health posed by Eutetranychus orientalis Klein in the EU territory, with the identification and evaluation of risk reduction options

2013

EFS2

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Mite diversity (Acari: Tetranychidae, Tydeidae, Iolinidae, Phytoseiidae) and within-tree distribution in citrus orchards in southern Spain, with special reference to Eutetranychus orientalis

et al. 2017

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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 was the dominant tetranychid species in orange and lemon trees, whereas T. urticae was slightly more abundant in mandarines. The most abundant tydeid in clementine and orange was Tydeus californicus, in lemon it was L. formosa. The iolinid P. ubiquitus was found in very low numbers. With respect to phytoseiids, E. stipulatus was dominant in the three citrus species. Eutetranychus orientalis had a unimodal phenology, peaking only in autumn, whereas the other two tetranychids had two maxima. Tydeus californicus showed one or two peaks depending upon the citrus species, and E. stipulatus also had two peaks, one in spring and one in autumn. The mites displayed a non-random distribution in the tree. Eutetranychus orientalis preferred the outer and upper leaves. On the contrary, tydeids (mainly T. californicus) and phytoseiids (mainly E. stipulatus) preferred inner and lower leaves. These preferences had not been sufficiently described previously, and they are important for sampling plans.

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Insects and other arthropods

Taylor¹

2019

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Population studies of arthropods on Melia azedarach in Seville (Spain), with special reference to Eutetranychus orientalis (Acari: Tetranychidae) and its natural enemies

Abstract: 7Eutetranychus orientalis has become an important pest of the ornamental tree Melia 8 azedarach in the city of Seville (Spain). Trees suffer total defoliation at the end of summer.

Cited by 10 publications

References 24 publications

Scientific Opinion on the risk to plant health posed by Eutetranychus orientalis Klein in the EU territory, with the identification and evaluation of risk reduction options

Scientific Opinion on the risk to plant health posed by Eutetranychus orientalis Klein in the EU territory, with the identification and evaluation of risk reduction options

Mite diversity (Acari: Tetranychidae, Tydeidae, Iolinidae, Phytoseiidae) and within-tree distribution in citrus orchards in southern Spain, with special reference to Eutetranychus orientalis

Insects and other arthropods

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