Chemical Ecology of Astigmatid Mites LIX Neral, the Alarm Pheromone of Schwiebea elongata (Banks) (Acari: Acaridae).

保正, 桑原; 豊祐, 衣斐; 葉子, 中谷; 篤史, 漁野; 直樹, 森; 知世, 坂田; 貴美子, 岡部

doi:10.2300/acari.10.19

Cited by 13 publications

(9 citation statements)

References 5 publications

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“…In Astigmata, the same compounds-which are probably plesiomorphically present in the group-serve a variety of pheromonal functions. Neral, neryl formate, and less frequently also geranial have been described as alarm pheromones in a number of astigmatid mite species (Akiyama et al 1997;Kuwahara et al 1975Kuwahara et al , 1988Kuwahara et al , 1991aKuwahara et al , 1991bKuwahara et al , 2001. Neral also serves as a sex pheromone in some other Astigmata (Hiraoka et al 2002).…”

Section: Chemoreceptionmentioning

confidence: 99%

Chemical alarm and defence in the oribatid mite Collohmannia gigantea (Acari: Oribatida)

Raspotnig

2006

Exp Appl Acarol

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The multicomponent oil gland secretion of Collohmannia gigantea, a middle-derivative mixonomatan oribatid mite, is demonstrated to possess alarm pheromonal and allomonal properties. Four components of the secretion, namely the monoterpenes neryl formate, neral, geranial and the aromatic 2-hydroxy- 6-methyl-benzaldehyde (2,6-HMBD), showed moderate to strong alarm pheromonal activity in adult mites. Naturally elicited response is due to neral (about 50% of the secretion) and probably 2,6-HMBD (only 5% of the secretion, but strong alarm pheromonal activity). This is the second report of an alarm pheromone in Oribatida. Tridecane and pentadecane (=the hydrocarbon fraction of the secretion) did not evoke evident behavioural reactions, and most likely serve as solvents and spreading agents for the pheromonal-active components. Alarm reactions were characterized by a short recognition phase (waving movements with legs I), followed by shrinking back and panic escape from the scent source. In addition, all six components of the oil gland secretion, including the hydrocarbons, exhibited strong allomonal properties against a model oribatid predator, the scydmaenid beetle, Euconnus (Tetramelus) oblongus. Considering the widespread semiochemical properties of oil gland secretions in astigmatid mites (=a highly derivative oribatid group), these results furnish evidence for a phylogenetically early origin of defensive and communicative roles of oil gland secretions in oribatids. These roles include alarm communication, defence and the production of anti-fungal compounds.

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Section: Chemoreceptionmentioning

confidence: 99%

Chemical alarm and defence in the oribatid mite Collohmannia gigantea (Acari: Oribatida)

Raspotnig

2006

Exp Appl Acarol

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“…Both female and male extracts consisted of 6 peaks (A, B, C, D, E and F). Peak A [retention time (t R ): 9.329 min] was newly realized as one of the gland components, together with the reported compounds [neral as peak B, geranial (3,7-dimethyl-(E)-2,6-octadienal) as peak C, neryl formate as peak D, unidentified m/z 150 as peak E and tridecane as peak F] (Kuwahara et al, 2001). GC/MS analysis of peak A (t R : 9.329 min) gave the molecular ion (M ϩ ) at mass unit (m/z) 154 (2%) and the base ion at m/z 69 (100%) with the following diagnostic ions; 139 (3%), 41 (10%), 93 (12%) and 84 (58%).…”

Section: Analysis Of Secretionsmentioning

confidence: 99%

“…The species was collected in Japan from the sediment of a heated swimming pool (Tagami et al, 1993). The species is also collectable from organic soils in several areas (Kuwahara et al, 2001), and is a possible agricultural pest attacking decaying stored crops. The known alarm pheromone neral, discharged from a pair of the opisthonotal gland upon physical disturbance (Kuwahara et al, 2001), is one of the most widely distributed components in the gland secretion of Astigmata, being present in 23 of 52 species (nine families) examined.…”

Section: Introductionmentioning

confidence: 99%

“…The species is also collectable from organic soils in several areas (Kuwahara et al, 2001), and is a possible agricultural pest attacking decaying stored crops. The known alarm pheromone neral, discharged from a pair of the opisthonotal gland upon physical disturbance (Kuwahara et al, 2001), is one of the most widely distributed components in the gland secretion of Astigmata, being present in 23 of 52 species (nine families) examined. Its alarm pheromone function is also reported in the following four species (Kuwahara, 1999) together with the present species: Carpoglyphus lactis (L.), L. konoi, Glyciphagus domesticus (De Geer), and Suidasia medanensis Oudemans.…”

Section: Introductionmentioning

confidence: 99%

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Chemical ecology of astigmatid mites. LXIV. The alarm pheromone neral functions as an attractant in Schwiebea elongata(Banks)(Acari: Acaridae).

Nishimura

Shimizu

Mori

et al. 2002

Appl. Entomol. Zool.

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Although neral [(Z)-3,7-dimethyl-2,6-octadienal] has been known as the alarm pheromone of Schwiebea elongata, reinvestigation of the pheromone resulted in recognition of another function as an attractant. The alarm pheromone activity was confirmed at a dose of one female equivalent of the hexane extract, whereas the attractant pheromone activity was observed at 0.1 female equivalent. Although no attractant activity was recovered in fractions of the silica gel (SiO 2) column eluate, the synthetic neral manifested both activities; the attractant activity at 3 ng and 1 ng with a convex dose-response relationship, and the alarm pheromone activity at 30 ng. A female contained 30.4 ng of neral on average and a male 0.7 ng on average. This is the first example among astigmatid mites demonstrating that a single mite compound emitted from the opisthonotal gland exhibits two pheromonal functions, alarm pheromone and also attractant, at different doses.

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“…Neral [(Z)-3,7-dimethyl-2,6-octadienal] has been identified as an alarm pheromone in 6 species of astigmatid mites [Carpoglyphus lactis, Lardoglyphus konoi (Kuwahara et al, 1980), Suidasia medanensis (Leal et al, 1989), Glycyphagus domesticus (Kuwahara et al, 1991), Schwiebea elongata (Kuwahara et al, 2001) and Oulenzia sp. (Shimizu et al, 2004)].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Neral in Carpoglyphus lactis (Acari: Carpoglyphidae) and Detection of Its Key Enzyme, Geraniol Dehydrogenase, by Electrophoresis

浩二¹,

真輝子²,

剛³

et al. 2005

J. Acarol. Soc. Jpn.

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The biosynthetic pathway of neral and its key enzyme(s) in Carpoglyphus lactis were elucidated using a crude enzyme solution obtained from C. lactis. Geraniol, which was biosynthesized via the mevalonate pathway, was first oxidized to geranial, and then geranial was isomerized to neral in C. lactis. Geraniol's geometrical isomer, nerol, was not converted by the crude enzyme solution. The body of C. lactis contained geraniol dehydrogenase (GeDH) dependent on NAD + and a factor that catalyzes the isomerization of geranial to neral. Four GeDHs were found in the crude enzyme solution of C. lactis when subjected to electrophoresis followed by staining with nitro blue tetrazolium and phenazine methosulfate in the presence of geraniol as a substrate. This is the first report of GeDHs from an animal.

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Chemical Ecology of Astigmatid Mites LIX Neral, the Alarm Pheromone of Schwiebea elongata (Banks) (Acari: Acaridae).

Cited by 13 publications

References 5 publications

Chemical alarm and defence in the oribatid mite Collohmannia gigantea (Acari: Oribatida)

Chemical alarm and defence in the oribatid mite Collohmannia gigantea (Acari: Oribatida)

Chemical ecology of astigmatid mites. LXIV. The alarm pheromone neral functions as an attractant in Schwiebea elongata(Banks)(Acari: Acaridae).

Biosynthesis of Neral in Carpoglyphus lactis (Acari: Carpoglyphidae) and Detection of Its Key Enzyme, Geraniol Dehydrogenase, by Electrophoresis

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