GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Induced mimicry of colony odors in ants (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 1641-1664 
    Details
    ISSN: 1573-1561
    Keywords: Formicinae ; mimicry ; artificial mixed colonies ; cuticular hydrocarbons ; colony recognition ; ants ; Hymenoptera ; Formicidae ; Formica selysi ; Monica rubida
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The cuticular hydrocarbons ofFormica selysi (Formicinae) andMonica rubida (Myrmicinae) reared in single species and in mixed species colonies were determined using gas chromatography (GC) and GC-mass spectrometry. In colonies containing both species, each species modified its species-specific recognition odor. This odor is composed, at least partly, of cuticular hydrocarbons. The cuticular hydrocarbons ofM. rubida consist only of saturated alkanes (n-alkanes and branched alkanes). InF. selysi the mixture also contains unsaturated compounds (monoenes and dienes). In hetero-specific colonies, a new chemical signature developed. This signature resulted from qualitative and quantitative changes in the spectrum of hydrocarbons produced by each species and permitted the two species to inhabit the same nest without displaying interspecific aggression. The readjustment seemed to be more an active synthesis or an active transfer than simply a passive transfer from one species to the other. This may imply that the ants synthesized some components of the hydrocarbon signature of the other species. These synthesizing processes may be activated under particular social environmental conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984695
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Alkenes as a Sexual Pheromone in the Alfalfa Leaf-Cutter Bee Megachile rotundata (1999)
    Springer
    Journal of chemical ecology 25 (1999), S. 471-490 
    Details
    ISSN: 1573-1561
    Keywords: Hymenoptera ; Apoidea ; Megachile rotundata ; solitary bee ; cuticular hydrocarbons ; sexual behavior of males
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Because of its special biological features, the leaf-cutter bee Megachile rotundata is particularly well suited for breeding and use as a pollinator for fodder plants such as alfalfa. Its mating behavior has been extensively studied. Behavioral tests have shown that males explore any black spot as a potential mating partner. However, exclusive selection of young virgin females suggests involvement of olfactory cues in addition to visual stimuli. Experiments demonstrated that mating behavior could be induced in males by lures covered with pentane extracts of the epicuticular waxes of young females. These extracts contain 35% fatty acids, 26% alkanes, and 39% monoenes. Variations in the monoene subfraction allow distinction between young virgin females, which possess more 7-pentacosene and 9-pentacosene, and older females, which have more 5-monoenes. The findings show that male mate-seeking and copulatory activity is stimulated only by young female monoenes. A 40% increase in this activity was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020993518226
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Cuticular hydrocarbons and defensive compounds ofReticulitermes flavipes (Kollar) andR. santonensis (feytaud): Polymorphism and chemotaxonomy (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 3213-3244 
    Details
    ISSN: 1573-1561
    Keywords: Polymorphism ; chemotaxonomy ; Reticulitermes flavipes ; Reticulitermes santonensis ; Isoptera ; termites ; cuticular hydrocarbons ; defensive compounds ; terpenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Colonies ofReticulitermes flavipes andR. santonensis were collected from the southeastern United States (Georgia) and the southwest of France (Charente-maritime). Defensive compounds and cuticular hydrocarbons were identified by gas chromatography-mass spectrometry and quantified by gas chromatography using an internal standard for each caste and all colonies. These analyses show that although the cuticular hydrocarbons ofR. santonensis in Europe andR. flavipes in Georgia are identical, their relative proportions are different. However, the defensive compounds synthesized by their soldiers are different. A strong chemical polymorphism between sympatric colonies ofR. flavipes in the SW United States was detected in terms of both the hydrocarbons of the workers and soldiers and in the defensive secretions of the soldiers. The six defensive secretion phenotypes are based on the presence or absence of terpenes whereas the cuticular hydrocarbon phenotypes are based on significant differences in the proportions of the various components. A multivariate analysis (analysis of principal components) clearly permitted discrimination of four phenotypes (three inR. flavipes and one inR. santonensis) without intermediates. The hydrocarbons responsible for these variations were identified, and it was shown that the variations are neither seasonal nor geographic. The phenotypes of the cuticular hydrocarbons (workers and soldiers) and defensive compounds are linked in each colony, forming in three groups inR. flavipes Georgia, one subdivided into four subgroups according to the defensive secretion phenotypes. The role of these polymorphisms is discussed and ethological tests indicate that the chemical polymorphism do not determine aggressive behavior. The taxonomic significance of these results is considered and two hypothesis are formulated: (1) We only detected a strong genetic polymorphism in one unique species, and we believe thatR. santonensis was introduced into Europe in the last century from oneR. flavipes colony. (2) Chemical variability characterizes the sibling species that can be grouped into the same subspeciesR. flavipes. Unknown mechanisms of reproductive isolation separate them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00982094
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Interspecific recognition among termites of the genusReticulitermes: Evidence for a role for the cuticular hydrocarbons (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 2397-2420 
    Details
    ISSN: 1573-1561
    Keywords: Interspecific recognition ; Isoptera ; termites ; Reticulitermes ; cuticular hydrocarbons ; aggression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two species of termites,Reticulitermes (lucifugus) grassei andR. (l.) banyulensis, show a high degree of aggressivity toward each other. The epicuticular signature, recognized by contact, can be extracted using organic solvents, and the removal of the signature abolished all types of aggressive behavior. The signature can be transferred to lures, where it triggers interspecies aggression. It was found to be mainly present in the apolar fraction of the cuticular extracts, which contained only hydrocarbons, are determined by GC/MS techniques. Chemical recognition contributes towards isolation of the two species belonging to theR. lucifugus complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994590
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...