Cuticular lipids of insects—VII Cuticular hydrocarbons of the crickets Achet a domesticus, gryllus pennsylvanicus and Nemobius fasciatus

Blomquist, Gary J.; Blailock, Thomas T.; Scheetz, Raymond W.; Jackson, Larry L.

doi:10.1016/0305-0491(76)90261-3

“…This result is consistent with previous analysis of cuticular hydrocarbons in orthopterans (Soliday et al. , 1974; Nelson & Sukkestad, 1975; Warthen & Uebel, 1980), and is particularly characteristic of crickets (Blomquist et al. , 1976).…”

Section: Discussionsupporting

confidence: 93%

“…Moreover, we found that a high proportion (approximately 80%) of the compounds, are n-alkanes and n-alkenes ranging in chain length from 31 to 33 carbons. This result is consistent with previous analysis of cuticular hydrocarbons in orthopterans (Soliday et al, 1974;Nelson & Sukkestad, 1975;Warthen & Uebel, 1980), and is particularly characteristic of crickets (Blomquist et al, 1976). Using peak retention times in our data analysis, rather than the actual identification of compounds, may have led to the overlooking of hidden variation in chemical profiles.…”

Section: Discussionsupporting

confidence: 89%

“…Although precise identification of cuticular hydrocarbons did not form part of this study (i.e. position of double bonds and methyl branches), the mass spectrometry of peak 3 is consistent with the mass spectrometry of 2methyltriacontane found in the cricket Gryllus pennsylvanicus (Blomquist et al, 1976). Moreover, we found that a high proportion (approximately 80%) of the compounds, are n-alkanes and n-alkenes ranging in chain length from 31 to 33 carbons.…”

Section: Discussionsupporting

confidence: 81%

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Cuticular hydrocarbons are heritable in the cricket Teleogryllus oceanicus

Thomas

¹

,

Simmons

²

2008

J of Evolutionary Biology

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The ability of individuals to respond differentially to conspecifics depending on their genetic relatedness is a widespread phenomenon across the animal kingdom. Despite this, little is known about the selection processes that act on the phenotypic variation of traits used during recognition. Here we use a quantitative genetic approach to examine the patterns of genetic variation in cuticular hydrocarbon (CHC) profiles, a pheromonal system used extensively in insect communication. Using gas chromatography, we found family specificity in the CHC profiles of male crickets, Teleogryllus oceanicus. Across CHC peaks, our mean coefficient of additive genetic variation was 10.8%. Multivariate principal component analysis showed that most axes of variation were weighted by CHC peaks with significant additive genetic variation. Our results provide evidence that variation in CHC profiles can reflect genetic relatedness, supporting the widely held belief that this phenotypic trait is used as a mechanism for chemosensory kin recognition.

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“…In respect to synthesis of 2-methylalkanes either by the parasitized nymph or by the Eretmocerus female, the biosynthetic mechanisms for possible formation of a mono-methyl branched alkane at the 2 position have been established. Various studies on the biosynthesis of 2-methylalkanes in plants (Kolattukudy et al, 1976) and insects Blomquist et al, 1976Blomquist et al, , 1987 suggest that the methyl branch originates from the iso-branched starter piece (isobutyryl-CoA) derived from the branched amino acid, valine. The use of isobutyryl-CoA as the starter for the biosynthetic pathway for the synthesis of alkanes in insects (Nelson, 1993;Nelson and Blomquist, 1995) results in the synthesis of even-carbon numbered alkanes with a methyl branch at the carbon-2 position .…”

Section: Discussionmentioning

confidence: 99%

Effect of whitefly parasitoids on the cuticular lipid composition of Bemisia argentifolii (Homoptera: Aleyrodidae) nymphs

Buckner

¹

,

Poprawski²,

Jones³

et al. 2000

Arch. Insect Biochem. Physiol.

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Experiments were conducted to determine the effects of whitefly parasitoids on the cuticular lipid composition of the silverleaf whitefly, Bemisia argentifolii Bellows and Perring [=sweetpotato whitefly, Bemisia tabaci (Gennadius), Biotype B] nymphs. The cuticular lipids of B. argentifolii nymphs that had been attacked by parasitic wasps, either Eretmocerus mundus Mercet or Encarsia pergandiella Howard, were characterized by capillary gas chromatography and CGC-mass spectrometry and the results compared with the cuticular lipids of unparasitized nymphs. Previous studies with B. argentifolii nymphs had shown that wax esters were the major components of the cuticular lipids with lesser amounts of hydrocarbons, long-chain aldehydes, and long-chain alcohols. No appreciable changes in lipid composition were observed for the cuticular lipids of E. pergandiella-parasitized nymphs as compared to unparasitized controls. However, the cuticular lipids from nymphs parasitized by E. mundus contained measurable quantities of two additional components in their hydrocarbon fraction. Analyses and comparisons with an authentic standard indicated that the two hydrocarbons were the even-numbered chain length methyl-branched alkanes, 2-methyltriacontane and 2-methyldotriacontane. The occurrences and possible functions of 2-methylalkanes as cuticular lipid components of insects are discussed and specifically, in regard to host recognition, acceptance, and discrimination by parasitoids. Published 2000 Wiley-Liss, Inc.

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“…Various studies on the biosynthesis of 2-methylalkanes in plants (Kolattukudy et al, 1976) and insects Blomquist et al, 1976Blomquist et al, , 1987 suggest that the methyl branch originates from the iso-branched starter piece (isobutyryl-CoA) derived from the branched amino acid, valine. The use of isobutyryl-CoA as the starter for the biosynthetic pathway for the synthesis of alkanes in insects (Nelson, 1993;Nelson and Blomquist, 1995) results in the synthesis of even-carbon numbered alkanes with a methyl branch at the carbon-2 position .…”

Section: Discussionmentioning

confidence: 99%

Effect of whitefly parasitoids on the cuticular lipid composition ofBemisia argentifolii (Homoptera: Aleyrodidae) nymphs

Buckner

¹

,

Poprawski

²

,

Jones

³

et al. 2000

Arch. Insect Biochem. Physiol.

6

0

View full text Add to dashboard Cite

Experiments were conducted to determine the effects of whitefly parasitoids on the cuticular lipid composition of the silverleaf whitefly, Bemisia argentifolii Bellows and Perring [=sweetpotato whitefly, Bemisia tabaci (Gennadius), Biotype B] nymphs. The cuticular lipids of B. argentifolii nymphs that had been attacked by parasitic wasps, either Eretmocerus mundus Mercet or Encarsia pergandiella Howard, were characterized by capillary gas chromatography and CGC-mass spectrometry and the results compared with the cuticular lipids of unparasitized nymphs. Previous studies with B. argentifolii nymphs had shown that wax esters were the major components of the cuticular lipids with lesser amounts of hydrocarbons, long-chain aldehydes, and long-chain alcohols. No appreciable changes in lipid composition were observed for the cuticular lipids of E. pergandiella-parasitized nymphs as compared to unparasitized controls. However, the cuticular lipids from nymphs parasitized by E. mundus contained measurable quantities of two additional components in their hydrocarbon fraction. Analyses and comparisons with an authentic standard indicated that the two hydrocarbons were the even-numbered chain length methyl-branched alkanes, 2-methyltriacontane and 2-methyldotriacontane. The occurrences and possible functions of 2-methylalkanes as cuticular lipid components of insects are discussed and specifically, in regard to host recognition, acceptance, and discrimination by parasitoids. Published 2000 Wiley-Liss, Inc.

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Cuticular lipids of insects—VII Cuticular hydrocarbons of the crickets Achet a domesticus, gryllus pennsylvanicus and Nemobius fasciatus

Cited by 8 publications

References 17 publications

Cuticular hydrocarbons are heritable in the cricket Teleogryllus oceanicus

Cuticular hydrocarbons are heritable in the cricket Teleogryllus oceanicus

Effect of whitefly parasitoids on the cuticular lipid composition of Bemisia argentifolii (Homoptera: Aleyrodidae) nymphs

Effect of whitefly parasitoids on the cuticular lipid composition ofBemisia argentifolii (Homoptera: Aleyrodidae) nymphs

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