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  • 1
    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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  • 2
    Electronic Resource
    Electronic Resource
    Drosophila melanogaster does not dealkylate [14C]sitosterol (1989)
    Springer
    Cellular and molecular life sciences 45 (1989), S. 983-985 
    Details
    ISSN: 1420-9071
    Keywords: Drosophila melanogaster ; sterol metabolism ; phytosterols ; dealkylation ; desmosterol ; sitosterol ; radiolabeled sterols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Drosophila melanogaster was unable to dealkylate and convert [14C]sitosterol to cholesterol and no evidence was found for conversion of [14C]desmosterol to cholesterol. Therefore,D. melanogaster is incapable of dealkylating and converting C28 and C29 phytosterols to cholesterol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01953056
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  • 3
    Electronic Resource
    Electronic Resource
    Degradation of pheromone biosynthesis-activating neuropeptide (PBAN) by hemolymph enzymes of the tobacco hornworm,Manduca sexta, and the corn earworm,Helicoverpa zea (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 961-966 
    Details
    ISSN: 1420-9071
    Keywords: Bis-norleucine Hez-PBAN ; Manduca sexta ; Helicoverpa zea ; hemolymph peptidases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The tritium-labeled bis-norleucine analog ofHelicoverpa zea pheromone biosynthesis-activating neuropeptide ([3H]NLPBAN) was incubated in vitro with hemolymph fromManduca sexta orH. zea adult females. The incubations resulted in the formation of several tritium-labeled degradation products. At a [3H]NLPBAN concentration of 0.9 μM the degradation proceeded at a very slow but physiologically plausible rate (2–10 fmol/min/μl hemolymph). The primary [3H]NLPBAN degradation reaction inM. sexta hemolymph was not inhibited by 20 μM leupeptin, 0.1 mM amastatin, 1 mM EDTA, 1 mM EGTA, 1 mM 1,10-phenanthroline, or 2 mM 4-(2-aminoethyl)benzenesulfonyl fluoride; but secondary reactions may have been affected, as some of the inhibitors changed the radio-HPLC profile of the degradation products. It is concluded that hemolymph ofM. sexta andH. zea contains peptidase(s) capable of inactivating circulating PBAN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01921748
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Variability of sterol utilization in stored-products insects (1994)
    Springer
    Cellular and molecular life sciences 50 (1994), S. 72-74 
    Details
    ISSN: 1420-9071
    Keywords: Stored-products insects ; sterol metabolism ; Tribolium castaneum ; Tenebrio molitor ; Plodia interpunctella ; C28 and C29 phytosterols ; 7-dehydrocholesterol ; cholesterol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A comparison of sterol utilization by 3 stored-products insects revealed very different capabilities. The fluor beetle,Tribolium castaneum dealkylates and converts dietary sitosterol to about equal amounts of cholesterol (43.7%) and 7-dehydrocholeterol (39.8%), whereas another flour beetle,Tenebrio molitor, produces considerably less 7-dehydrocholesterol (16.8%) and relatively more cholesterol (66.7%) from sitosterol. The lepidopteran,Plodia interpunctella, utilized dietary sterol very similar to plant-feeding lepidoptera, producing primarily cholesterol (86.5%) from sitosterol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01992053
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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    Identification of male-specific volatiles from nearctic and neotropical stink bugs (Heteroptera: Pentatomidae) (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 1103-1111 
    Details
    ISSN: 1573-1561
    Keywords: Heteroptera ; Pentatomidae ; pheromone ; attractant ; Euschistus ; soybean ; methyl 2,6,10-trimethyltridecanoate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males of the Central American stink bug species,Euschistus obscurus, produce an attractant pheromone composed of a blend of compounds characteristic of North AmericanEuschistus spp. and the South American soybean pest,E. heros. The range ofE. obscurus extends into the southern United States, the species is easy to rear, and males produce an exceptionally large quantity of pheromone (〉0.5µg/day/male). These factors madeE. obscurus useful for characterizing the novel pheromone components ofE. heros without importing this pest species into the United States.Euschistus obscurus males produce methyl (2E,4Z)-decadienoate (61 %) in abundance, which is characteristic of North American species, and methyl 2,6,10-trimethyltridecanoate (27%), the main male-specific ester ofE. heros. The chirality ofEuschistus spp. methyl-branched esters, and field activity of synthetic formulations, remain to be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02059746
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  • 7
    Electronic Resource
    Electronic Resource
    Sex pheromone of the stable fly (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 353-361 
    Details
    ISSN: 1573-1561
    Keywords: Stable fly ; Stomoxys calcitrans (L) ; pheromone ; mating stimulants ; alkenes ; cuticular lipids ; copulatory behavior
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The cuticular alkenes of the female stable fly,Stomoxys calcitrans (L), which were responsible for inducing male fly copulatory behavior are (Z)-9-hentriacontene, (Z)-9-tritriacontene, 13-methyl-1-hen-triacontene and 13-methyl-1-tritriacontene. The identifications of the branched alkenes and the synthesis of these four compounds are described. Bioassays indicate that these materials in combination with previously described methyl branched alkanes are more active than the individual components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987921
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  • 8
    Electronic Resource
    Electronic Resource
    Volatile compounds from the predatory insectPodisus maculiventris (Hemiptera: Pentatomidae) (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 561-568 
    Details
    ISSN: 1573-1561
    Keywords: Podisus maculiventris ; spined soldier bug ; Hemiptera ; Pentatomidae ; allomone ; pheromone ; kairomone ; linalool
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In the predatory spined soldier bug,Podisus maculiventris, the dorsal abdominal glands are much smaller in adult females than males. Females produce a mixture of (E)-2-hexenal, (E)-2-octenal, (E)-2-hexenoic acid, benzaldehyde, and nonanal in these glands. The female dorsal abdominal gland secretion may be a close-range pheromone since the dorsal abdominal gland secretion from males has been shown to be a long-range aggregation pheromone in this species. The metathoracic scent gland secretions of male and female spined soldier bugs are apparently identical, and similar to that of other pentatomids, except for the presence of the monoterpene alcohol, linalool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994221
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  • 9
    Electronic Resource
    Electronic Resource
    Identification of feeding stimulants for boll weevils from cotton buds and anthers (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 1229-1238 
    Details
    ISSN: 1573-1561
    Keywords: Boll weevil ; Anthonomus grandis ; Coleoptera ; Curculionidae ; feeding stimulants ; cotton buds ; anthers ; phytol ; geranylgeraniol esters ; phytol oleate ; phytol dodecanoate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Column chromatography of the pentane extract of freeze-dried cotton buds or anthers yielded a wax-sterol ester fraction that exhibited potent feeding stimulant activity for the cotton boll weevil. The waxes of the wax-sterol ester mixture were responsible for the feeding activity. Saponification of the wax-sterol ester fraction yielded about 15% alcohols and 85% sterols. A C18∶1 alcohol, dihydrophytol, phytol, and geranylgeraniol constituted 15, 36, 26, and 23%, respectively, of the total alcohols, implicating certain of their long-chain esters as feeding stimulants. Several esters of dihydrophytol, phytol, and geranylgeraniol were identified among the waxes by GC-MS. Certain phytol, geranylgeraniol, and oleyl alcohol esters containing C12 to C26 acid moieties were synthesized and were found to induce high feeding stimulant activity in the cotton boll weevil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01024111
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Acyclohexanediones from setal exudate of Hawthorn lace bug nymphCorythucha cydoniae (Hemiptera: Tingidae) (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 2369-2378 
    Details
    ISSN: 1573-1561
    Keywords: Hawthorn lace bug ; Corythucha cydoniae ; Hemiptera ; Tingidae ; 3,6-dihydroxy-2-[1-oxo-6(E) ; 8(E)-tetradecadienyl]cyclohex-2-en-1-one ; 3,6-dihydroxy-2-[1-oxo-dodecanyl]-cyclohex-2-en-1-one ; 3,6-dihydroxy-2-[1-oxo-8-dodecenyl]cyclohex-2-en-1-one ; 3,6-dihydroxy-2-acyl-cyclohex-2-en-1-ones ; setal exudate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The three major components of setal exudate from nymphs of the Hawthorn lace bug,Corythucha cydoniae, were identified as 3,6-dihydroxy-2-[1-oxo-6(E),8(E)-tetradecadienyl]cyclohex-2-en-1-one; 3,6-dihydroxy-2-[1-oxo-dodecanyl]-cyclohex-2-en-1-one; 3,6-dihydroxy-2-[1-oxo-8-dodecenyl] cyclohex-2-en-1-one. An additional 10 minor components were partially characterized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012088
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