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Shimano, Satoshi; Sakata, Taizo; Mizutani, Y.; Kuwahara, Yasumasa; Aoki, Jun-ichi

doi:10.1023/a:1020517319363

Cited by 36 publications

(14 citation statements)

References 1 publication

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“…Nerol and neryl propionate have not been found in the headspace of D. pteronyssinus so far. Interestingly, no volatiles were found in the headspace of tritonymphs, supporting the idea that the release of pheromones in D. pteronyssinus is stage specific, as has been reported also for other mite species [ 13 , 14 ].…”

Section: Discussionsupporting

confidence: 80%

“…Furthermore, studies with house dust mites so far only addressed pheromone release and reaction to pheromones in adult mites while the role of pheromones for nymphs remained unclear. The characteristic opisthosomal glands (“oil glands”), which are made responsible for the release of most pheromones in astigmatid mites [ 5 ] are present in nymphs as well [ 12 ] and they have also been reported to release pheromones [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Pheromonal Communication in the European House Dust Mite, Dermatophagoides pteronyssinus

Steidle

Barcari

Hradecky

et al. 2014

Insects

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Despite the sanitary importance of the European house dust mite Dermatophagoides pteronyssinus (Trouessart, 1897), the pheromonal communication in this species has not been sufficiently studied. Headspace analysis using solid phase micro extraction (SPME) revealed that nerol, neryl formate, pentadecane, (6Z,9Z)-6,9-heptadecadiene, and (Z)-8-heptadecene are released by both sexes whereas neryl propionate was released by males only. Tritonymphs did not produce any detectable volatiles. In olfactometer experiments, pentadecane and neryl propionate were attractive to both sexes as well as to tritonymphs. (Z)-8-heptadecene was only attractive to male mites. Therefore it is discussed that pentadecane and neryl propionate are aggregation pheromones and (Z)-8-heptadecene is a sexual pheromone of the European house dust mite D. pteronyssinus. To study the potential use of pheromones in dust mite control, long-range olfactometer experiments were conducted showing that mites can be attracted to neryl propionate over distances of at least 50 cm. This indicates that mite pheromones might be useable to monitor the presence or absence of mites in the context of control strategies.

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Pheromonal Communication in the European House Dust Mite, Dermatophagoides pteronyssinus

Steidle

Barcari

Hradecky

et al. 2014

Insects

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“…Their food generally consists of decaying higher plant material and saprophytic fungi (31,32), although stable isotope studies indicate that necrophagy or predation on small invertebrates is common, especially in tropical soils (32,33). Oribatid mites posses paired exocrine glands (34), called opisthonotal or oil glands, that secrete a wide range of organic compounds, including monoterpenes, sesquiterpenes, aromatics, aliphatic aldehydes, a ketone, fatty acids, fatty acid esters, an alkyl formate, and hydrocarbons (12,(35)(36)(37)(38)(39)(40)(41)(42). The functions of these compounds have been little studied but include alarm signals and chemical defenses (34,38).…”

Section: Ecologymentioning

confidence: 99%

“…Oribatid mites posses paired exocrine glands (34), called opisthonotal or oil glands, that secrete a wide range of organic compounds, including monoterpenes, sesquiterpenes, aromatics, aliphatic aldehydes, a ketone, fatty acids, fatty acid esters, an alkyl formate, and hydrocarbons (12,(35)(36)(37)(38)(39)(40)(41)(42). The functions of these compounds have been little studied but include alarm signals and chemical defenses (34,38). In the better-studied and closely related mite group Astigmata (not occurring in our samples), compounds from homologous glands also function as aggregation signals and sex pheromones (40).…”

Section: Ecologymentioning

confidence: 99%

Oribatid mites as a major dietary source for alkaloids in poison frogs

Saporito

Donnelly²,

Norton³

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

160

181

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Alkaloids in the skin glands of poison frogs serve as a chemical defense against predation, and almost all of these alkaloids appear to be sequestered from dietary arthropods. Certain alkaloid-containing ants have been considered the primary dietary source, but dietary sources for the majority of alkaloids remain unknown. Herein we report the presence of ≈80 alkaloids from extracts of oribatid mites collected throughout Costa Rica and Panama, which represent 11 of the ≈24 structural classes of alkaloids known in poison frogs. Forty-one of these alkaloids also occur in the dendrobatid poison frog, Oophaga pumilio , which co-occurs with the collected mites. These shared alkaloids include twenty-five 5,8-disubstituted or 5,6,8-trisubstituted indolizidines; one 1,4-disubstituted quinolizidine; three pumiliotoxins; and one homopumiliotoxin. All but the last of these alkaloid classes occur widely in poison frogs. In addition, nearly 40 alkaloids of unknown structure were detected in mites; none of these alkaloids have been identified in frog extracts. Two of these alkaloids are homopumiliotoxins, five appear to be izidines, four appear to be tricyclics, and six are related in structure to poison frog alkaloids that are currently unclassified as to structure. Mites are common in the diet of O. pumilio , as well as in the diets of other poison frogs. The results of this study indicate that mites are a significant arthropod repository of a variety of alkaloids and represent a major dietary source of alkaloids in poison frogs.

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“…In fact, it has been shown that oribatid exocrine secretions-though only known from a small number of species for the time being-play an unexpectedly important role in their life and survival strategies. These secretions serve a variety of functions, comprising microbial and fungal protection, chemically-mediated predator defence or intraspecific communication by pheromones (Shimano et al 2002;Raspotnig 2006a). Besides semiochemical properties, exocrine secretions of oribatids are also considered involved in building up secretion layers on the cuticular surface.…”

Section: Introductionmentioning

confidence: 99%

Wearing a raincoat: exocrine secretions contain anti-wetting agents in the oribatid mite, Liacarus subterraneus (Acari: Oribatida)

Raspotnig

Leis²

2008

Exp Appl Acarol

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Liacarus subterraneus is a large, soil-dwelling oribatid mite species that possesses a conspicuously shiny, clean and not wettable cuticular surface. The exocrine cuticular chemistry of this species was investigated by means of gas chromatography-mass spectrometry. Besides a fraction of hydrocarbons and a terpene, hexane extracts of whole mite bodies exhibited free carboxylic acids and their glycerides as main components. The compounds were arranged in three distinct extract profiles. Based on data from individual extracts, (1) the majority (more than 3/4) of specimens showed large amounts of 1,2-dioctanoyl-glycerol (and three other related esters) but no (or only traces of) free carboxylic acids. (2) In about 1/8 of extracts, free acids (mainly octanoic (caprylic) acid) and glycerides were detected. This second type of profile highly varied with respect to the relative abundance of acids and esters. (3) The third profile (in about 7% of specimens) exclusively exhibited free acids and no (or only traces of) glycerides. In addition, a few extracts exhibited no components at all. The extract compounds most likely originate from the lipid layer of the cerotegument of L. subterraneus. The cuticle of individuals that possessed extractable cerotegumental compounds (profile I, II, III) exhibited strong water repellent properties, while the cuticle of individuals that possessed no components in their extract did not. After hexane extraction, water repellent properties got lost. The distinct extract profiles detected most likely portray the stepwise generation of an anti-wetting, exocrine surface lipid layer of glycerides: If this layer is lost, fatty acids may be discharged again (profile III) and may subsequently esterify (profile II) to larger and more stable esters (diacyl-glycerols), eventually building up the "raincoat" (mainly profile I) of L. subterraneus.

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Cited by 36 publications

References 1 publication

Pheromonal Communication in the European House Dust Mite, Dermatophagoides pteronyssinus

Pheromonal Communication in the European House Dust Mite, Dermatophagoides pteronyssinus

Oribatid mites as a major dietary source for alkaloids in poison frogs

Wearing a raincoat: exocrine secretions contain anti-wetting agents in the oribatid mite, Liacarus subterraneus (Acari: Oribatida)

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