Chemical composition of the frontal gland secretion ofSyntermes soldiers (Isoptera, Termitidae)

1981 ◽  
Vol 7 (1) ◽  
pp. 135-145 ◽  
Author(s):  
Raymond Baker ◽  
Helen R. Coles ◽  
Michael Edwards ◽  
David A. Evans ◽  
Philip E. Howse ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Gland Secretion ◽  
Frontal Gland

Chemical composition of the frontal gland secretion from soldiers of nasutitermes lujae (termitidae, nasutitermitinae)

Tetrahedron ◽  
1983 ◽  
Vol 39 (24) ◽  
pp. 4237-4241 ◽  
Author(s):  
J.C. Braekman ◽  
D. Daloze ◽  
A. Dupont ◽  
J.M. Pasteels ◽  
P. Lefeuve ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Gland Secretion ◽  
Frontal Gland

Chemical Composition of the Rectal Gland and Volatiles Released by Female Queensland Fruit Fly, Bactrocera tryoni (Diptera: Tephritidae)

2019 ◽  
Vol 48 (4) ◽  
pp. 807-814 ◽  
Author(s):  
Ashraf M El-Sayed ◽  
Uppala Venkatesham ◽  
C Rikard Unelius ◽  
Andrew Sporle ◽  
Jeanneth Pérez ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Fruit Fly ◽  
Gland Secretion ◽  
Rectal Gland ◽  
Bactrocera Tryoni ◽  
Headspace Volatiles ◽  
Ethyl Palmitate ◽  
Minor Compounds

Abstract The composition of the rectal gland secretion and volatiles emitted by female Queensland fruit fly, Bactrocera tryoni was investigated. Esters were found to be the main compounds in the gland extracts and headspace, while amides were the minor compounds in the gland extracts and headspace. Ethyl dodecanoate, ethyl tetradecanoate, ethyl (Z9)-hexadecenoate and ethyl palmitate were the main esters in the gland extracts, while ethyl dodecanoate and ethyl tetradecanoate were the main esters in the headspace. Four amides (N-(3-methylbutyl)acetamide), N-(2-methylbutyl)propanamide, N-(3-methylbutyl)propanamide, and N-(3-methylbutyl)-2-methylpropanamide were found in the gland extracts and the headspace. Among the amides, N-(3-methylbutyl)acetamide and N-(3-methylbutyl)propanamide were the main amides in the gland extracts and the headspace. Traces of three spiroacetals were found both in the gland extracts and in the headspace. (E,E)-2,8-Dimethyl-1,7-dioxaspiro[5.5]undecane, (E,E)-2-ethyl-8-methyl-1,7-dioxaspiro[5.5]undecane, (E,E)-2-propyl-8-methyl-1,7-dioxaspiro[5.5]undecane. All compounds found in the headspace were present in the extract of the rectal gland suggesting that the rectal gland is the main source of the headspace volatiles, whose function remains to be elucidated. This is the first comprehensive chemical analysis of the rectal gland secretions and volatiles of female B. tryoni, and further laboratory and field bioassays are required to determine the function of compounds identified in this study. Discovery of the same amides previously identified in the male rectal gland in the female rectal gland raises questions about the pheromonal role previously suggested for these compounds.

Schistosoma mansoni Cercariae: Stimulation of Acetabular Gland Secretion Is Adapted to the Chemical Composition of Mammalian Skin

1997 ◽  
Vol 83 (6) ◽  
pp. 1079 ◽  
Author(s):  
Wilfried Haas ◽  
Dirk Diekhoff ◽  
Karin Koch ◽  
Gerold Schmalfuss ◽  
Christina Loy
Keyword(s):  
Chemical Composition ◽  
Schistosoma Mansoni ◽  
Gland Secretion ◽  
Mammalian Skin ◽  
Stimulation Of

Chemical Composition of the Nasal Gland Secretion from the Marsh Deer Odocoileus ( DorcelaphusJ dichotomus (Illiger)

1976 ◽  
Vol 31 (9-10) ◽  
pp. 496-498 ◽  
Author(s):  
Jürgen Jacob ◽  
Ernst Von Lehmann
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Hydroxy Fatty Acids ◽  
Gland Secretion ◽  
Cholesterol Esters ◽  
Double Bonds ◽  
Lipid Mixture

Abstract The secretion of the nasal gland from the marsh deer (Odocoileus dichotomus) has shown to be a lipid mixture predominantly containing cholesterol esters, mono-and diester waxes, the latter of which containing 2-hydroxy fatty acids. The alcoholic constituents of the mono-and diester waxes contain considerable amounts of mono-unsaturated homologues, all with double bonds in(ω-9) position.

Defensive substances from the frontal gland secretion of Nasutitermes nigriceps termite soldiers

1991 ◽  
Vol 56 (12) ◽  
pp. 2969-2977 ◽  
Author(s):  
Irena Valterová ◽  
Miloš Buděšínský ◽  
Jan Vrkoč
Keyword(s):  
Detailed Analysis ◽  
Infrared Spectra ◽  
Nmr Spectra ◽  
Gland Secretion ◽  
Volatile Fraction ◽  
Termite Species ◽  
Frontal Gland ◽  
Derivatives Of ◽  
Termite Soldiers ◽  
C Nmr

The components of the defence secretion of the soldiers of Nasutiterms nigriceps termite species (Isoptera: Termitidae: Nasutitermitinae) have been identified. In the volatile fraction the following components were found: α- and β-pinene, camphene, myrcene, α-terpinene, p-cymene, limonene and terpinolene. Ten diterpenic compounds (I - X), mostly derivatives of the tricyclic trinervitane, were found in the non-volatile fraction. The structure of the so far undescribed 1(15),8(19)-trinervitadiene-2β,3α,14α-triol triacetate (X) was determined on the basis of its mass and infrared spectra and a detailed analysis of 1H and 13C NMR spectra. Considerable differences were found in the composition of the non-volatile fraction of the secretion of the species of termites studied from various localities.

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