Cuticular lipids of insects. VI. Cuticular lipids of the grasshoppers Melanoplus sanguinipes and Melanoplus packardii

The cuticular lipids of the grasshoppers Melanoplus sanguinipes and Melanoplus packardii contain 60 and 68% alkanes and 28 and 18% secondary alcohol wax esters, respectively, with lesser amounts of normal and sterol wax esters, triglycerides, alcohols, sterols, and free fatty acids. All the hydrocar...

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Bibliographic Details
Published in:Journal of lipid research 1974-07, Vol.15 (4), p.399-405
Main Authors: Soliday, C L, Blomquist, G J, Jackson, L L
Format: Article
Language:English
Subjects:
Alkanes - analysis
Animals
Chromatography, Gas
Chromatography, Thin Layer
Esters - analysis
Fatty Acids - analysis
Fatty Acids, Nonesterified - analysis
Fatty Alcohols - analysis
Grasshoppers
Lipids - analysis
Male
Mass Spectrometry
methyl-branched alkanes
secondary alcohols
Sterols - analysis
Triglycerides - analysis
Waxes - analysis
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Summary:The cuticular lipids of the grasshoppers Melanoplus sanguinipes and Melanoplus packardii contain 60 and 68% alkanes and 28 and 18% secondary alcohol wax esters, respectively, with lesser amounts of normal and sterol wax esters, triglycerides, alcohols, sterols, and free fatty acids. All the hydrocarbons are saturated, and four types of alkanes are present: n-alkanes, 3-methylalkanes, internally branched monomethylalkanes, and internally branched dimethylalkanes. The principal n-alkanes in both insects are C(29) and C(27), with a range from C(21) to C(33). Trace amounts of 3-methylalkanes of 28, 30, and 32 total carbons are present. The principal internally branched monomethylalkanes are C(32) and C(34), whereas the main dimethylalkane contains 35 carbons. The n-alkanes do not correspond in chain length to the secondary alcohols. The primary alcohols range from C(22) to C(32) in both insects, with C(24) and C(26) predominating. The fatty acids in the triglyceride and free fatty acid fractions range from C(12) to C(24) in M. sanguinipes and from C(12) to C(18) in M. packardii.
ISSN:0022-2275
DOI:10.1016/S0022-2275(20)36788-2