Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans

ABSTRACT The avocado red mite, Oligonychus yothersi (McGregor) (Acari: Tetranychidae), is a polyphagous pest that causes damage to a wide range of plants. In Chile, is commonly found in avocado (Persea americana Mill.) orchards, and the plant damage is expressed as a reduction of photosynthetic acti...

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Autores principales:	Rioja,Tommy, Ceballos,Ricardo, Holuigue,Loreto
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Avocado red mite Coccinellidae methyl salicylate monoterpenes olfactory responses Persea americana Staphylinidae.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300447
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spelling	oai:scielo:S0718-583920180003004472018-11-14Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopteransRioja,TommyCeballos,RicardoHoluigue,Loreto Avocado red mite Coccinellidae methyl salicylate monoterpenes olfactory responses Persea americana Staphylinidae. ABSTRACT The avocado red mite, Oligonychus yothersi (McGregor) (Acari: Tetranychidae), is a polyphagous pest that causes damage to a wide range of plants. In Chile, is commonly found in avocado (Persea americana Mill.) orchards, and the plant damage is expressed as a reduction of photosynthetic activity in leaves, causing defoliation of trees under severe attack conditions. Oligotapygmaea (Solier) (Staphylinidae) and Parastethorus histrio (Chazeau) (Coccinellidae) micro-coleopteran predators are found on 'Hass' avocado orchards, infested by O. yothersi. This study investigated the role of volatile compounds released by avocado in response to O. yothersi infestation in the tritrophic interaction avocado-O. yothersi-O.pygmaea-P. histrio. Plant volatiles were collected from live plants by headspace technique on Porapak Q traps and analyzed by gas chromatography coupled to mass spectrometry (GC-MS). In the chemical analysis, several chemical groups were identified including terpenes, aromatic compounds, and green leaf volatiles. Eight chemical compounds were detected only in the infested plants volatile profile, and differences were observed in the emission of 10 compounds between infested and uninfested plants (P < 0.05). The behavioral responses of the insects to plant volatiles were evaluated in a choice-test using a Y-tube as olfactometer. Uninfested plant volatiles were significantly attractive to O. yothersi, while infested plants volatile extract repelled the mites. Two compounds, i?-limonene and (-pinene, elicit an attractant behavioral response from O. yothersi. Oligota pygmaea and P. histrio females registered a strong attraction to volatiles from infested plants, and the compounds (Z)-(-ocimene and methyl salicylate detected only in infested plant also were attractive to predators.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.3 20182018-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300447en10.4067/S0718-58392018000300447
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Avocado red mite Coccinellidae methyl salicylate monoterpenes olfactory responses Persea americana Staphylinidae.
spellingShingle	Avocado red mite Coccinellidae methyl salicylate monoterpenes olfactory responses Persea americana Staphylinidae. Rioja,Tommy Ceballos,Ricardo Holuigue,Loreto Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
description	ABSTRACT The avocado red mite, Oligonychus yothersi (McGregor) (Acari: Tetranychidae), is a polyphagous pest that causes damage to a wide range of plants. In Chile, is commonly found in avocado (Persea americana Mill.) orchards, and the plant damage is expressed as a reduction of photosynthetic activity in leaves, causing defoliation of trees under severe attack conditions. Oligotapygmaea (Solier) (Staphylinidae) and Parastethorus histrio (Chazeau) (Coccinellidae) micro-coleopteran predators are found on 'Hass' avocado orchards, infested by O. yothersi. This study investigated the role of volatile compounds released by avocado in response to O. yothersi infestation in the tritrophic interaction avocado-O. yothersi-O.pygmaea-P. histrio. Plant volatiles were collected from live plants by headspace technique on Porapak Q traps and analyzed by gas chromatography coupled to mass spectrometry (GC-MS). In the chemical analysis, several chemical groups were identified including terpenes, aromatic compounds, and green leaf volatiles. Eight chemical compounds were detected only in the infested plants volatile profile, and differences were observed in the emission of 10 compounds between infested and uninfested plants (P < 0.05). The behavioral responses of the insects to plant volatiles were evaluated in a choice-test using a Y-tube as olfactometer. Uninfested plant volatiles were significantly attractive to O. yothersi, while infested plants volatile extract repelled the mites. Two compounds, i?-limonene and (-pinene, elicit an attractant behavioral response from O. yothersi. Oligota pygmaea and P. histrio females registered a strong attraction to volatiles from infested plants, and the compounds (Z)-(-ocimene and methyl salicylate detected only in infested plant also were attractive to predators.
author	Rioja,Tommy Ceballos,Ricardo Holuigue,Loreto
author_facet	Rioja,Tommy Ceballos,Ricardo Holuigue,Loreto
author_sort	Rioja,Tommy
title	Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
title_short	Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
title_full	Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
title_fullStr	Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
title_full_unstemmed	Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans
title_sort	herbivore-induced plant volátiles emitted from avocado shoots infested by oligonychus yothersi (acari: tetranychidae) increases the attraction of micro-coleopterans
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000300447
work_keys_str_mv	AT riojatommy herbivoreinducedplantvolatilesemittedfromavocadoshootsinfestedbyoligonychusyothersiacaritetranychidaeincreasestheattractionofmicrocoleopterans AT ceballosricardo herbivoreinducedplantvolatilesemittedfromavocadoshootsinfestedbyoligonychusyothersiacaritetranychidaeincreasestheattractionofmicrocoleopterans AT holuigueloreto herbivoreinducedplantvolatilesemittedfromavocadoshootsinfestedbyoligonychusyothersiacaritetranychidaeincreasestheattractionofmicrocoleopterans
_version_	1714205381487493120

Herbivore-induced plant volátiles emitted from avocado shoots infested by Oligonychus yothersi (Acari: Tetranychidae) increases the attraction of micro-coleopterans

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