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  • 1
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    Proteins in a nonvenomous defensive secretion: biosynthetic significance (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-04
    Description: In common with many arthropods, the true bug, Leptoglossus phyllopus, when disturbed, emits a two-phase secretion that consists of an organic phase and an aqueous phase. The organic phase is a mixture of highly reactive low-molecular-weight compounds, analogous to those produced by other arthropods, and is deterrent to many kinds of predators. The aqueous phase, heretofore ignored in most analyses of arthropod defensive secretions, contains proteins. Even though the secretion is not injected, the proteins enzymatically catalyze the derivation of the most reactive components within the impermeable cuticular storage reservoir and, thus, constitute part of the defensive system that appears to be commonly used by arthropods producing irritating chemicals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aldrich, J R -- Blum, M S -- Hefetz, A -- Fales, H M -- Lloyd, H A -- Roller, P -- New York, N.Y. -- Science. 1978 Aug 4;201(4354):452-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17729900" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Chemical attraction of the eastern yellowjacket,Vespula maculifrons (Hymenoptera: Vespidae) (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 420-422 
    Details
    ISSN: 1420-9071
    Keywords: Yellowjacket, eastern ; Vespula maculifrons ; attraction, chemical ; pheromone, attractant ; Podisus maculiventris
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Workers and queens of the eastern yellowjacket,Vespula maculifrons, are attracted to the artificial long-range attractant pheromone of the predaceous pentatomid,Podisus maculiventris. A 1∶1 mixture of linalool or α-terpineol and (E)-2-hexenal is as attractive toV. maculifrons workers as the pheromone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02004538
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  • 3
    Electronic Resource
    Electronic Resource
    Pheromones and colonization: reassessment of the milkweed bug migration model (Heteroptera: Lygaeidae: Lygaeinae) (1999)
    Springer
    Chemoecology 9 (1999), S. 63-71 
    Details
    ISSN: 1423-0445
    Keywords: Key words. insect-plant interactions – parasitoid host-finding – mating strategy –Oncopeltus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary. Research on insect migration has justifiably emphasized females – the so-called “oogenesis-flight syndrome”– since it is the females that place the eggs into new habitats. The large and small milkweed bugs, Oncopeltus fasciatus and Lygaeus kalmii, respectively, have featured prominently in studies of insect migration and sequestration of host plant toxins for chemical defense. Here we report that males of these species, and males of another well-studied lygaeine (Neacoryphus bicrucis), produce pheromones in glands usually considered to serve only a defensive role in Heteroptera (the metathoracic scent glands), and that these pheromones are exploited by a tachinid parasitoid as a host-finding kairomone. The pheromones are mixtures of C6 and C8 saturated and unsaturated esters reminiscent of lepidopteran pheromones, and the key compound of the O. fasciatus pheromone has now been correctly identified as (E)-2,7-octadienyl acetate. It is proposed that the concept of the oogenesis-flight syndrome for these kinds of insects should accommodate the role of males in the migration process. The hypothesis is presented that male-produced pheromones play a significant role in guiding colonization of new habitats in many heteropteran species. In addition, data are presented suggesting that there is a trade-off between the amount of pheromone produced by colonizing males and the host breadth of the species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000490050035
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  • 4
    Electronic Resource
    Electronic Resource
    Pheromone blends of green stink bugs and possible parasitoid selection (1989)
    Springer
    Naturwissenschaften 76 (1989), S. 173-175 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00366402
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  • 5
    Electronic Resource
    Electronic Resource
    Instar-specific defensive secretions of stink bugs (Heteroptera: Pentatomidae) (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 893-896 
    Details
    ISSN: 1420-9071
    Keywords: Allomone ; semiochemical ; aggregation ; Nezara ; Euschistus ; Acrosternum ; Thyanta ; Edessa ; Hemiptera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Defensive secretions (allomones) from first-instar nymphs of stink bugs in the subfamily Pentatominae contain (E)-4-oxo-2-decenal as a major constituent, whereas this compound is absent from later instars. In contrast, first instars ofEdessa meditabunda (Edessinae) produce allomones like those of later instars. The C6 and C8 (E)-4-oxo-2-alkenals are common, characteristic exocrine compounds of nymphal and adult Heteroptera, but (E)-4-oxo-2-decenal is previously unknown as a major natural product for which a biological role has yet to be established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02118429
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  • 6
    Electronic Resource
    Electronic Resource
    Makisterone A: Its distribution and physiological role as the molting hormone of true bugs (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 996-997 
    Details
    ISSN: 1420-9071
    Keywords: Milkweed bug ; Oncopeltus fasciatus ; makisterone A ; molting hormone ; ecdysteroid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Makisterone A, a 28-carbon (C-24 alkyl) hexahydroxy steroid, has been identified by mass spectrometry as the major ecdysteroid in last-stage larvae of the large milkweed bug,Oncopeltus fasciatus, a phytophagous hemipteran. Similarly, it is a major molting hormone in 2 phytophagous and 1 predacious species of Hemiptera belonging to the group, Pentatomomorpha. It is not, however, a major ecdysteroid in another group of Hemiptera, the Cimicomorpha, where 1 predacious and 2 hematophagous species contain ecdysone and 20-hydroxyecdysone as their major molting hormones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946477
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  • 7
    Electronic Resource
    Electronic Resource
    Identification of a new predaceous stink bug pheromone and its attractiveness to the eastern yellowjacket (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 583-585 
    Details
    ISSN: 1420-9071
    Keywords: Pheromone ; kairomone ; semiochemical ; attractant ; Vespula maculifrons ; Podisus fretus ; Hemiptera ; honeybee
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Males ofPodisus fretus (Hemiptera: Pentatomidae) release a long-range attractant pheromone containing linalool (49.0%), (E)-2-hexenal (34.5%), benzyl alcohol (12.0%), nerolidol (2.0%),α-terpineol (1.1%), and traces of several other compounds. The eastern yellowjacket,Vespula maculifrons (Hymenoptera: Vespidae), is attracted to artificial pheromones forP. fretus and for the sympatric species,Podisus maculiventris.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946714
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  • 8
    Electronic Resource
    Electronic Resource
    In vivo inactivation of denervated corpora allata by precocene II in the bug,Oncopeltus fasciatus (1980)
    Springer
    Cellular and molecular life sciences 36 (1980), S. 362-364 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Transection of the nervous connections between the brain and the corpus allatum (CA) inOncopeltus fasciatus does not alter the susceptibility of the CA to precocene II in vivo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01952328
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  • 9
    Electronic Resource
    Electronic Resource
    Semiochemistry of aposematic seed bugs (1997)
    Springer
    Entomologia experimentalis et applicata 84 (1997), S. 127-135 
    Details
    ISSN: 1570-7458
    Keywords: Hemiptera ; Heteroptera ; Lygaeidae ; Oncopeltus ; Tropidothorax ; Neacoryphus ; pheromone ; attractant ; aposematic ; Asclepiadaceae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract (E)-2,7-Octadienyl acetate and (E) -2-octenyl acetate (1:10 by volume) were identified as a pheromone attractive to both sexes of the lygaeid bug, Tropidothorax cruciger. In a parallel investigation of Neacoryphus bicrucis (Lygaeidae), (E, E) -2,4-hexadienyl acetate and phenethyl acetate (≈9:1) were identified from males, and found attractive to both sexes of adults in the field plus a tachinid fly parasitoid of the bugs. In N. bicrucis, the pheromone was clearly shown to come from the tubular accessory glands of the metathoracic scent gland; this evidence, plus earlier literature reports for other species, indicate that male lygaeids are the pheromone emitters. In another lygaeid, Oncopeltus fasciatus, 2-isobutyl-3-methoxypyrazine was identified in the cardiac glycoside-laden fluid sequestered from milkweed hosts and expelled by these bugs when they are attacked. Alkyl methoxypyrazines are warning odorants associated with poisonous insect secretions, and their presence in O. fasciatus indicates that the plant-derived chemical defense of lygaeines is more elaborate than previously appreciated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003096317524
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  • 10
    Electronic Resource
    Electronic Resource
    Influence of Host Pheromone on Egg Parasitism by Scelionid Wasps: Comparison of Phoretic and Nonphoretic Parasitoids (2000)
    Springer
    Journal of insect behavior 13 (2000), S. 165-173 
    Details
    ISSN: 1572-8889
    Keywords: Telenomus ; Podisus maculiventris ; Euschistus obscurus ; Scelionidae ; kairomone ; biological control ; phoresy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The kairomonal activity of the attractant pheromone for the “spined soldier bug,” Podisus maculiventris (Hemiptera: Pentatomidae), was investigated by exposing fresh pentatomid egg masses in field traps with or without synthetic pheromone. Predominantly two parasitoids were recovered from exposed eggs of P. maculiventris and Euschistus obscurus: Telenomus podisi Ashmead (a generalist pentatomid egg parasitoid) and Telenomus calvus Johnson (a phoretic specialist on Podisus eggs) (Hymenoptera: Scelionidae). The incidences of T. podisi from P. maculiventris and E. obscurus eggs placed in pheromone-baited and nonbaited traps were not significantly different, suggesting that this oophagous wasp does not use the spined soldier bug attractant pheromone as a kairomone. However, T. calvus was reared almost exclusively from egg masses of P. maculiventris placed inside pheromone-baited traps. These results suggest that T. calvus females orient to volatile chemicals emitted by spined soldier bug males as a searching strategy to find areas likely to contain host eggs, in addition to the previously discovered strategy of using the pheromone to guide their phoretic behavior. The data also indicate that T. calvus can distinguish between the egg masses of these pentatomid hosts at close range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007728012482
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