1,3,5,7-Tetramethyldecyl formate, lardolure: Aggregation pheromone of the acarid mite, Lardoglyphus konoi (sasa et asanuma) (Acarina: Acaridae).

Kuwahara, Yasumasa; Yen, Lam Thi My; Tominaga, Yasuhira; Matsumoto, Katsuhiko; Wada, Yoshitake

doi:10.1271/bbb1961.46.2283

Cited by 32 publications

(10 citation statements)

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“…These eluted as the first two peaks in GC, thus confirming the 4,6‐ syn arrangement in the natural 8 . In the mite Lardoglyphus konoi , the related aggregation pheromone lardolure 15 has the all‐ R configuration 15. We therefore chose to synthesize a pure enantiomer of (4 R ,6 R ,8 R )‐ 8 in order to compare it with the natural product.…”

Section: Resultsmentioning

confidence: 99%

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Sriram¹,

Palanisamy²,

Kannan³

et al. 2001

J of Applied Polymer Sci

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ABSTRACT:Vinyl-terminated polyurethane (VTPU) was prepared by end-functionalizing isocyanate-terminated prepolymers with 2-bromoethanol and subsequently quartenizing with 4-vinylpyridine. The vinyl functionality was then effectively utilized for preparing AB crosslinked polymers (ABCPs) with methyl methacrylate (MMA). ABCPs prepared with variable weight ratios on PTMG 1000 -based VTPU/MMA (8/2, 6/4, 5/5, 4/6, 2/8) and those prepared at a 5/5 weight ratio with different polyols (PTMG 1000 , PPG 1000 , and PCL 1250 ) in VTPU were characterized by Fourier transform infrared spectroscopy (FTIR) and further analyzed for thermal and mechanical properties. FTIR spectral results confirm quartenization of heterocyclic nitrogen, leading to crosslinking. Thermogravimetric analyses show enhanced thermal stability of the crosslinked systems. The stress-strain measurements reveal increasing tensile strength with increasing amounts of MMA. Comparison of dynamic mechanical spectra of ABCPs based on PTMG 1000 shows that the 5/5 composition exhibits good damping over a broad temperature range.

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Section: Resultsmentioning

confidence: 99%

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Sriram¹,

Palanisamy²,

Kannan³

et al. 2001

J of Applied Polymer Sci

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“…Parts of these compounds function as alarm, aggregation or sex pheromones (Kuwahara et al 1975(Kuwahara et al , 1982Leal et al 1989a). The profile of secretion has been found to be characteristic for each species, and provides a chemical key which can be used to confirm the identification of a given species based on conventional morphological characters (Leal et al 1989b;Kuwahara 1999).…”

Section: Introductionmentioning

confidence: 99%

Identification of astigmatid mites using the second internal transcribed spacer (ITS2) region and its application for phylogenetic study

et al. 2005

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The second internal transcribed spacer (ITS2) of nuclear ribosomal DNA from 73 specimens of Astigmata was analyzed by PCR amplification and DNA sequencing. The length of the ITS2 region varied from 282 to 592 bp. The interspecific variation based on consensus sequences was more than 4.1%, while the intraspecific or intra-individual variation was from 0 to 5.7%. The variation between geographically separated populations (0-3.2%) was almost the same as the variation within strains. The sequences of the ITS2 region of Astigmata were concluded to be species-specific. The phylogenetic tree inferred from the ITS2 region supported Zachvatkin's morphological classification in the subfamily Rhizoglyphinae. The species-specific ITS2 sequence is useful for the species identification of astigmatid mites and for studying low-level phylogenetic relationships.

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“…Lardoglyphus konoi Sasa et Asanuma provided an exception, having an aggregation pheromone, lardolure (1R,3R,5R,7R-1,3,5,7-tetramethyldecyl formate) (Kuwahara et al 1982;Mori and Kuwahara 1986a, b), and an alarm pheromone, neral [3,7-dimethyl-(Z)-2,6-octadienal] (Kuwahara et al 1980). The alarm pheromone is produced from the opisthonotal glands, whereas evidence has suggested that lardolure is produced from another internal source (Kuwahara 2004).…”

Section: Introductionmentioning

confidence: 99%

S-isorobinal as the female sex pheromone from an alarm pheromone emitting mite, Rhizoglyphus setosus

et al. 2005

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The female sex pheromone of Rhizoglyphus setosus Manson (Astigmata: Acaridae) was identified as S-isorobinal (4S-4-isopropenyl-3-oxo-1-cyclohexene-1-carboxyaldehyde), which stimulated males sexually and enhanced the frequency of the male's tapping and mounting behavior. Although the female hexane extract indicated no sign of sex pheromone activity against tested males, possibly due to the presence of the alarm pheromone neryl formate, an SiO2 column fraction containing isorobinal elicited sex pheromone activity at a dose of one female equivalent. The stereochemistry of natural isorobinal was identified as S by an HPLC using a chiral column. Both S- and R-isorobinals exhibited maximum activity at the same dose of 1 and 10 ng with a convex dose-response relationship. Amounts of S-isorobinal were determined to be 11.7 +/- 1.0 ng per female and 6.4 +/- 1.3 ng per male by GLC. This is the second example of two pheromones (the alarm pheromone neryl formate, and the sex pheromone S-isorobinal) demonstrated to be components of the same opisthonotal gland secretion.

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1,3,5,7-Tetramethyldecyl formate, lardolure: Aggregation pheromone of the acarid mite, Lardoglyphus konoi (sasa et asanuma) (Acarina: Acaridae).

Cited by 32 publications

References 1 publication

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

AB crosslinked polymers based on cationomeric polyurethane and poly(methyl methacrylate): Static and dynamic mechanical studies

Identification of astigmatid mites using the second internal transcribed spacer (ITS2) region and its application for phylogenetic study

S-isorobinal as the female sex pheromone from an alarm pheromone emitting mite, Rhizoglyphus setosus

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