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  • 1
    Electronic Resource
    Electronic Resource
    Leo Pardi (1900–1990) (1991)
    Springer
    Insectes sociaux 38 (1991), S. 219-220 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01240973
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  • 2
    Electronic Resource
    Electronic Resource
    Unrelated helpers in a social insect (2000)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 405 (2000), S. 784-787 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] High-resolution genetic markers have revolutionized our understanding of vertebrate mating systems, but have so far yielded few comparable surprises about kinship in social insects. Here we use microsatellite markers to reveal an unexpected and unique social system in what is probably the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35015552
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic relatedness in primitively eusocial wasps (1989)
    [s.l.] : Nature Publishing Group
    Nature 342 (1989), S. 268-270 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Methods for using genetic markers to estimate relatedness, with standard errors, have been available for a decade4'8. But they have been applied to only three species of primitively eusocial insects (a halictid bee9'10, an anthophorid bee11 and a sphecid wasp12), whose lack of morphologically ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/342268a0
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  • 4
    Electronic Resource
    Electronic Resource
    The origin and evolution of social life in the Stenogastrinae (Hymenoptera, Vespidae) (1989)
    Springer
    Journal of insect behavior 2 (1989), S. 649-661 
    Details
    ISSN: 1572-8889
    Keywords: sociality ; evolution ; Vespidae ; Stenogastrinae ; brood rearing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Stenogastrinae are a subfamily of the Vespidae. The main difference between these and other social wasps (Polistinae and Vespinae) is a jelly-like substance that the Stenogastrinae secrete from the Dufour 's gland and use in many functions of their biology. It is suggested that this substance greatly contributed to the evolution of social life in these wasps by making it possible to nourish the brood with liquid food and store it in the nest, thus favoring also the evolution of the behavioral mechanisms which facilitated interactions between adults. Social organization of the colonies may have been kept at a low level through a basic system of continuous temporary helper replacement, while the evolution of large colonies was restrained, as well as by the poor quality of construction material, low egg-laying capacity and limited production of abdominal substance, imperfect social regulatory mechanisms, and the absence of defensive mechanisms of the colonies against large predators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01065784
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  • 5
    Electronic Resource
    Electronic Resource
    Chemical analysis of sternal gland secretion of paper waspPolistes dominulus (Christ) and its social parasitePolistes sulcifer (Zimmermann) (Hymenoptera: Vespidae) (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 1709-1718 
    Details
    ISSN: 1573-1561
    Keywords: Vespidae ; Polistinae ; Polistes ; sternal glands ; long-chain carboxylic acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The secretion of the tegumental glands of the fifth and sixth gastral sternites ofP. dominulus and of its social parasiteP. sulcifer was analyzed by gas chromatography-mass spectrometry. Seven long-chain carboxylic acids have been identified: hexadecanoic, octadecadienoic and octadecenoic acids are the major components of the gland secretion ofP. dominulus and octadecenoic acid the main compounds ofP. sulcifer sternal gland secretion. The same carboxylic acids have been found on the nest pedicel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033671
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  • 6
    Electronic Resource
    Electronic Resource
    The dufour gland and the secretion placed on eggs of two species of social wasps,Liostenogaster flavolineata andParischnogaster jacobsoni (vespidae: Stenogastrinae) (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 279-290 
    Details
    ISSN: 1573-1561
    Keywords: Hymenoptera ; Vespidae ; Stenogastrinae ; Dufour gland ; Larval food ; egg secretion ; ant guard ; emulsifier ; eicosyloxyethanol ; hydrocarbons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The secretion placed on eggs and fed to larvae and the “ant guard” placed on the nest stalk ofParischnogaster jacobsoni contain the same hydrocarbons and in approximately the same proportions as is found in the Dufour gland. The secretion on eggs is a mixture of the contents of the Dufour gland and nectar. The emulsifying agent is a palmitic acid salt. Similarly, inLiostenogaster flavolineata, the egg secretion is an emulsion of nectar and Dufour gland secretion, which contains alkoxyethanol emulsifiers, found in nature for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00993695
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  • 7
    Electronic Resource
    Electronic Resource
    Ant repellent effect of the sternal gland secretion ofPolistes dominulus (Christ) andP. sulcifer (Zimmermann). (Hymenoptera: Vespidae) (1996)
    Springer
    Journal of chemical ecology 22 (1996), S. 37-48 
    Details
    ISSN: 1573-1561
    Keywords: Vespidae ; Polistinae ; Polistes ; sternal glands ; nest defense ; ant repellents ; allomones ; unsaturated carboxylic acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The long-chain carboxylic acids identified in the sternal gland secretion ofPolistes dominulus andP. sulcifer females were tested individually on three species of ants,Crematogaster scutellaris, Formica cunicularia, andLasius sp., in order to verify if they have a repellent effect. The unsaturated acids (palmitoleic, linoleic, and oleic) act as repellents of all three ant species, while the saturated acids (lauric, myristic, palmitic, and stearic) have no effect. The mixture reproducing the secretion of the sternal glands ofP. dominulus maintained its repellency for at least four days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040198
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  • 8
    Electronic Resource
    Electronic Resource
    Species-Specific Volatile Substances in the Venom Sac of Hover Wasps (1998)
    Springer
    Journal of chemical ecology 24 (1998), S. 1091-1104 
    Details
    ISSN: 1573-1561
    Keywords: Stenogastrinae ; Vespidae ; venom ; pheromones ; hydrocarbons ; spiroacetals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Analyses of the volatile compounds in the venom sacs of seven species of stenogastrine wasps, belonging to three different genera, have revealed a mixture of linear alkanes and alkenes, with a chain length ranging from C11 to C17 in all the species. Among conspecifics, the composition of the mixture was consistent, while clear differences have been found between different species. Venom glands of some species also contained oxygenated compounds and, in one species, some pyrazines. Most of these compounds were found to be species-specific but were not always found in every individual of a species. In the genus Parischnogaster, P jacobsoni and P. mellyi showed the presence of some spiroacetals that were not found in P. alternata and P. striatula. The possible functions of the venom sac volatiles in the biology of the Stenogastrinae are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022358604352
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  • 9
    Electronic Resource
    Electronic Resource
    Alternative mating tactics in males of Polistes dominulus (Hymenoptera: Vespidae) (1988)
    Springer
    Behavioral ecology and sociobiology 22 (1988), S. 257-264 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In summer, males of Polistes dominulus form large aggregations at sunny landmarks. We identified two size-correlated behavioural categories: residents (R) and transient (T). R males, which constitute 20%–25% of the total population, are larger than T males, territorial, aggressive, and more site-faithful, while T males range more widely, are non-aggressive, and show little site tenacity. Field and laboratory data suggest that R males have an advantage in mating, particularly if they engage in frequent flights while on their territories. These alternative mating tactics within the same population are combined with behavioural flexibility in some individuals, which switch from one option to the other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299840
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  • 10
    Electronic Resource
    Electronic Resource
    Nestmate recognition in three species of stenogastrine wasps (Hymenoptera, Vespidae) (1996)
    Springer
    Behavioral ecology and sociobiology 39 (1996), S. 311-316 
    Details
    ISSN: 1432-0762
    Keywords: Key words Nestmate recognition ; Immature brood recognition ; Nest recognition ; Stenogastrinae ; Vespidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The capacity to recognise a conspecific intruder was investigated in Parischnogaster jacobsoni, Liostenogaster flavolineata and L. vechti, three species of primitively social wasps of the subfamily Stenogastrinae. Results of behavioural experiments carried out in the field showed that females of all three species react pacifically if presented with female nestmates, but aggressively reject an intruder from a conspecific colony. As L. flavolineata and L. vechti both build large clusters of nests, often very close to each other, the recognition capacity among females from different nests, but in the same conspecific cluster, was also investigated. Females of both species were more aggressive towards females from a different colony in the same cluster than towards their female nestmates. Additional experiments on L. flavolineata showed that there was no difference in reaction towards females from colonies nearer or further from the tested colony but within the same cluster, nor towards females from a different cluster. The capacity to recognise an alien conspecific nest containing immature brood was investigated in P. jacobsoni. Adult females of this species, invited to land on an alien nest which had experimentally been exchanged for their own, accepted the new nest and partially destroyed the immature brood. The behaviour of the females when they land on an alien nest, however, suggests that they do recognise the nest as foreign. Acceptance of foreign nests coupled with low immature brood destruction is probably due to the high energetic costs of egg-deposition and larval rearing in stenogastrine wasps. These results suggest that nestmate recognition in these wasps is very efficient, even though they belong to the most primitive subfamily of social wasps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002650050294
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