Olfactory response of predatory mites to vegetative and reproductive parts of coconut palm infested by Aceria guerreronis

Melo, José Wagner da Silva; Lima, Debora B.; Pallini, Ângelo; Oliveira, J. E. M.; Gondim, Manoel G. C.

doi:10.1007/s10493-011-9465-1

Cited by 32 publications

(21 citation statements)

References 39 publications

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“…Despite the common occurrence of several predatory mites in association with the coconut mite, field and laboratory observations suggest that many potential predators have difficulties to invade the refuge used by the coconut mite (Lawson-Balagbo et al 2007a;Aratchige et al 2007;Negloh et al 2010;Galvão et al 2011;Lima et al 2012). Among the predators, species of Neoseiulus (Acari: Phytoseiidae) are the most widely tested species in the laboratory (Fernando et al 2003;Aratchige et al 2007;Lawson-Balagbo et al 2007b;Domingos et al 2010;Melo et al 2011;Lima et al 2012) and in field studies (LawsonBalagbo et al 2007a;Fernando et al 2010;Negloh et al 2010). Species of Neoseiulus found on coconuts are dorso-ventrally flattened and have short legs (Chant and McMurtry 2003), which enables them to move in small spaces.…”

Section: Introductionmentioning

confidence: 99%

Evidence of Amblyseius largoensis and Euseius alatus as biological control agent of Aceria guerreronis

et al. 2015

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Amblyseius largoensis (Muma) (Acari: Phytoseiidae) and Euseius alatus De Leon (Acari: Phytoseiidae) are predatory mites that are mostly found on leaves and on the exposed fruit surface of coconut plants. Their morphology hampers the access to the microhabitat occupied by Aceria guerreronis Keifer (Acari: Eriophyidae), the most important pest of coconut fruits throughout the world. However, it was suggested that they can prey on A. guerreronis under natural conditions when this pest leaves its refuge to disperse. Since the trophic interactions between A. largoensis or E. alatus and A. guerreronis are unknown, we compare the frequencies of occurrence of A. largoensis and E. alatus under the bracts of coconut fruits and on coconut leaflets. In addition, because phytoseiids feed by liquid ingestion, we used molecular analysis to confirm the potential role of A. largoensis or E. alatus as predators of A. guerreronis and to assess how fast the A. guerreronis DNA fragment is degradated in the A. largoensis digestive tract. Our study demonstrated that E. alatus was only present on coconut leaflets whereas A. largoensis was found mostly on leaflets and, to a much lesser extent, under the bracts of coconuts. Species-specific ITS primers designed for A. guerreronis were shown to have a high degree of specificity for A. guerreronis DNA and did not produce any PCR product from DNA templates of the other insects and mites associated with the coconut agroecosystem. Based on molecular analysis, we confirmed that the predatory mites, A. largoensis and E. alatus, had preyed on the coconut mite in the field. Overall the predatory mites collected in the field exhibited low levels of predation (26.7% of A. largoensis and 8.9% of E. alatus tested positive for A. guerreronis DNA). The fragment of A. guerreronis DNA remained intact for a very short time (no more than 6 h after feeding) in the digestive tract of A. largoensis.

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Section: Introductionmentioning

confidence: 99%

Evidence of Amblyseius largoensis and Euseius alatus as biological control agent of Aceria guerreronis

et al. 2015

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“…These predatory mites have been extensively studied and represent a potential biological control strategy for A. guerreronis (Kumar and Singh 2000;Moraes and Zacarias 2002;LawsonBalagbo et al 2007aLawsonBalagbo et al , b, 2008Fernando et al 2010;Domingos et al 2010). Among the predators, Neoseiulus baraki (Athias-Henriot) is one of the most widely tested species in the laboratory (Aratchige et al 2007;Domingos et al 2010;Melo et al 2011;Lima et al 2012) and in field studies (Fernando et al 2010), which showed great potential for use in biological control. However, these predators may be affected acaricides used against A. guerreronis (Ramaraju et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…In addition to lower costs for producers, reducing the number of applications of acaricides is highly desirable, as this practice is difficult to implement with large crop sizes (Melo et al 2011). The objective of the present study was to identify acaricides that can preserve and increase the native fauna of natural enemies of A. guerreronis.…”

Section: Introductionmentioning

confidence: 99%

Survival and behavioural response to acaricides of the coconut mite predator Neoseiulus baraki

et al. 2012

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The coconut mite, Aceria guerreronis Keifer, is a major pest of coconut palm in the world. The control of this pest species is done through acaricide applications at short time intervals. However, the predators of this pest may also be affected by acaricides. Among the predators of A. guerreronis, Neoseiulus baraki (Athias-Henriot) has potential for biological control. The objective of this study was to assess the effect of acaricides on the survival and behavior of N. baraki. The survivorship of N. baraki was recorded in surface-impregnated arenas. Choice and no-choice behavioral bioassays were carried out using a video tracking system to assess the walking behavior of the predator under acaricide exposure. Although all acaricides negatively affected the survival of N. baraki, chlorfenapyr and azadirachtin caused lower effect than the other acaricides. No significant differences in walking behavior were observed under exposure to fenpyroximate, chlorfenapyr and chlorpyrifos on fully-contaminated arenas. Azadirachtin and chlorpyrifos caused repellence. Irritability was observed for all acaricides, except for abamectin. Chlorfenapyr was the most suitable product for managing the coconut mite because of its low effect on survival and behavior of N. baraki.

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“…baraki was described by Melo et al. (), who showed that N . baraki detected chemical cues emitted by coconut plants infested by A .…”

Section: Introductionmentioning

confidence: 74%

Acaricides impair prey location in a predatory phytoseiid mite

Lima

Oliveira

Melo

et al. 2016

J Applied Entomology

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The use of predatory mites as the sole management tactic in biological control programmes frequently does not fully and reliably prevents damage of phytophagous mites on plants. Therefore, as an alternative, the integration of predatory mites with acaricides can provide more effective control of phytophagous mites than that of the predators only. However, for such integration, acaricides minimal negative impacts on predatory mites are required. In this study, we evaluated the sublethal effects of three acaricides on the foraging behaviour of Neoseiulus baraki (AthiasHenriot) (Acari: Phytoseiidae) in a coconut production system. The acaricides were assessed for interference with the location of prey habitat using a Y-tube olfactometer and for interference with the location of the prey colony within the habitat using a video-tracking system. In addition to the choice of odour source, the time required and the distance walked to make the choice were assessed. The acaricides tested were abamectin, azadirachtin and fenpyroximate. The predatory mite preferred coconuts infested with the coconut mite Aceria guerreronis Keifer (Acari: Eriophyidae) over uninfested coconuts when not exposed to acaricides. However, when exposed to acaricides, the predator did not distinguish between infested and uninfested fruits. When exposed to abamectin, N. baraki spent more time resting and walked greater distances before making the choice of an odour source. Thus, the acaricides impair the ability of the predatory mite N. baraki to locate a prey habitat and to locate a prey within that habitat. The acaricides differentially affected prey foraging by interfering with odour perception.

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Olfactory response of predatory mites to vegetative and reproductive parts of coconut palm infested by Aceria guerreronis

Cited by 32 publications

References 39 publications

Evidence of Amblyseius largoensis and Euseius alatus as biological control agent of Aceria guerreronis

Evidence of Amblyseius largoensis and Euseius alatus as biological control agent of Aceria guerreronis

Survival and behavioural response to acaricides of the coconut mite predator Neoseiulus baraki

Acaricides impair prey location in a predatory phytoseiid mite

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