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  • Coleoptera  (8)
  • 42.80
  • Springer  (8)
  • 1990-1994  (8)
  • 1980-1984
  • 1970-1974
  • 1993  (8)
Collection
Keywords
Publisher
  • Springer  (8)
Years
  • 1990-1994  (8)
  • 1980-1984
  • 1970-1974
Year
  • 1
    Electronic Resource
    Electronic Resource
    Distribution of overwintering Colorado potato beetle in and near Massachusetts potato fields (1993)
    Springer
    Entomologia experimentalis et applicata 66 (1993), S. 191-196 
    Details
    ISSN: 1570-7458
    Keywords: Leptinotarsa decemlineata (Say) ; Coleoptera ; Chrysomelidae ; distribution ; diapause ; overwintering ; mortality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02382289
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  • 2
    Electronic Resource
    Electronic Resource
    Geometrical and optical isomerism of pheromones in two sympatricDryocoetes species (Coleoptera: Scolytidae), mediates species specificity and response level (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 2169-2182 
    Details
    ISSN: 1573-1561
    Keywords: Semiochemicals ; pheromones ; Dryocoetes confusus ; Dryocoetes affaber ; Coleoptera ; Scolytidae ; enantiomers ; diastereoisomers ; exo-brevicomin ; endo-brevicomin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In a field-trapping experiment, western balsam bark beetles,Dryocoetes confusus Swaine, were highly attracted to a 5∶1 mixture of (±)-exo-and (±)-endo-brevicomin. Beetles in the sympatric speciesD. affaber (Mann.), were best attracted to a 1∶1 blend of these semiochemicals [either (±)∶(±) or (±)∶(±)], suggesting that both geometrical isomers are pheromone components in these species. In laboratory bioassays and further field experiments, attraction ofD. confusus was greatest when the (+) enantiomers of both geometrical isomers of brevicomin were presented in a 9∶1 ratio. Responses by maleD. confusus to attractive mixtures were reduced in the presence of (−)-exo-brevicomin. Exploitation of the complete range of variability in pheromone structure (both geometrical and optical isomerism) would allow for optimization and regulation of response levels within a species and also could maintain reproductive isolation among sympatric congeneric species primarily through production and response to species-specific blends.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00979655
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  • 3
    Electronic Resource
    Electronic Resource
    The behaviour of 9 stored product beetles at pitfall trap arenas and their capture in millet (1993)
    Springer
    Entomologia experimentalis et applicata 66 (1993), S. 161-169 
    Details
    ISSN: 1570-7458
    Keywords: avoidance behaviour ; capture efficiency ; Coleoptera ; time-lapse video ; visual recording
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Pitfall trap capture forSitophilus oryzae (L.),S. zeamais (Motschulsky),S. granarius (L.),Tribolium confusum (Duval),T. castaneum (Herbst);Oryzaephilus surinamensis (L.),Cryptolestes pusillus (Schonherr),Rhyzopertha dominica (Fabr.), andProstephanus truncatus (Horn) in millet was assessed by visual and time-lapse video recordings. The behaviour of different beetle species in arenas containing millet was monitored over 24 h and the frequency of encounters with the trap rim resulting in capture recorded. The capture efficiency of four types of pitfall traps (i.e. polystyrene, polythene, glass and tin-plated steel can) with rims exposed or submerged below the millet surface level were compared. Capture was related to beetle size, locomotory rate, and beetle behaviour at the trap rim as well as trap design and placement. The lighter and smaller species were least captured. Glass jars were more effective than plastic and metal containers. Traps placed with their rims submerged below the grain surface level were more efficient than those with rims exposed. Capture rate was unrelated to trap size. The frequency of encounters with trap rims was not correlated with capture rate. Three types of avoidance behaviours at the trap rims i.e. probing, skirting and spontaneous retreat, were related to capture rate, spontaneous retreat being the most effective escape mechanism and probing least.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02382285
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  • 4
    Electronic Resource
    Electronic Resource
    Behavioural responses of three stored product Coleoptera species to extract of carob (Locust bean),Ceratonia siliqua (1993)
    Springer
    Entomologia experimentalis et applicata 68 (1993), S. 9-13 
    Details
    ISSN: 1570-7458
    Keywords: bioassay ; behavioural response ; Coleoptera ; carob extract ; stored product
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The behavioural responses ofCryptolestes pusillus Oryzaephilus surinamensis andProstephanus truncatus to different doses of carob extract were assessed in a two-choice pitfall bioassay and in plastic grain probe traps. The extract evoked a quick directional response and induced high beetle attraction to treated pitfall arenas compared with the controls. Overall, the extract improved probe trap efficiency by about 50% compared to unbaited probes. Beetle response was dose-dependent with the medium dose of 10 μl probably eliciting optimum response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02380576
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  • 5
    Electronic Resource
    Electronic Resource
    Impact of acidic deposition onEncelia farinosa gray (Compositae: Asteraceae) and feeding preferences ofTrirhabda geminata horn (Coleoptera: Chrysomelidae) (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 97-105 
    Details
    ISSN: 1573-1561
    Keywords: Encelia farinosa ; Asteraceae ; Trirhabda geminata ; Coleoptera ; Chrysomelidae ; feeding preferences ; acidic deposition ; plant stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Container grownEncelia farinosa were exposed to three 3-hr episodes of acidic fog (pH 2.5) typical of events in southern California. Adults and larvae of the specialist leaf-feeding herbivore,Trirhabda geminata, preferred to feed on the acidic-treated foliage compared to control fogged (pH 6.3–6.5) foliage. Previous feeding damage on the plants did not affect feeding preference. The acidic-fogged foliage was significantly higher in total nitrogen and soluble protein but not different from control-treated tissue in water content. Stress on native populations of this drought-deciduous shrub caused by atmospheric pollutants may also result in altered feeding ecology of the beetle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987475
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  • 6
    Electronic Resource
    Electronic Resource
    Toxicity of allyl isothiocyanate-amended soil toLimonius californicus (Mann.) (Coleoptera: Elateridae) wireworms (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 1033-1046 
    Details
    ISSN: 1573-1561
    Keywords: Rapeseed ; Brassica spp. ; allyl isothiocyanate ; glucosinolates ; allelochemicals ; Limonius californicus (Mann.) ; Coleoptera ; Elateridae ; toxicity ; sublethal effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Acute toxicity of soil amended with allyl isothiocyanate (AITC) to three size classes ofLimonius californicus (Mann.) wireworms was determined in the laboratory. Wireworms were exposed to AITC at initial concentrations of 120–300 nmol/g soil for one day. During this time, extractable AITC concentrations decreased by 66 to 93 %. Probit analysis estimated LC50 values of 238 and 226 nmol/g soil at one day posttreatment for medium and large wireworms, respectively. For small wireworms, LC50 values decreased from 211 to 157 nmol/g soil during 1–137 days posttreatment. Sublethal concentrations of AITC significantly reduced feeding activity of treated wireworms at three posttreatment times and over the entire 137 days. Wireworm weight was not significantly affected by AITC. The potential exists to use glucosinolate-containing plant tissue as an isothiocyanate (ITC) source to reduce crop damage caused byL. californicus wireworms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987366
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  • 7
    Electronic Resource
    Electronic Resource
    Identification of the sex pheromone of the guernsey carpet beetle,Anthrenus sarnicus Mroczkowski (Coleoptera: Dermestidae) (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 971-983 
    Details
    ISSN: 1573-1561
    Keywords: Anthrenus sarnicus ; Coleoptera ; Dermestidae ; pheromone ; decyl butyrate ; decanol ; volatile components ; EAG ; bioassay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract It has been confirmed that adult virgin females ofAnthrenus sarnicus Mroczkowski exhibit a characteristic headstand posture that is associated with the release of a sex pheromone. Volatiles trapped on filter papers suspended above calling females were attractive to adult virgin males when tested in a two-choice target bioassay. Separate aeration extracts of males and females were analyzed by gas chromatography-mass spectrometry and showed that decanol and decyln-butyrate were released by females only. These components were present in approximately equal amounts and accounted for about 90% of the total area of the chromatogram. Decyl butyrate produced an electroantennogram response with a larger response from males than females. Behaviorally, a mixture of 10μg of decanol and 10μg of decyl butyrate attracted 88% of males and 10μg of decyl butyrate alone attracted 82% of males in the bioassay. The role of decyl butyrate as a sex pheromone is convincing, but this is not the case for decanol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00992532
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  • 8
    Electronic Resource
    Electronic Resource
    Selectively fluorinated analogs reveal differential olfactory reception and inactivation of green leaf volatiles in insects (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 1981-1991 
    Details
    ISSN: 1573-1561
    Keywords: Green leaf volatile ; olfaction ; reception ; inactivation ; electroantennogram ; fluorinated analogs ; Spodoptera exigua ; Leptinotarsa decemlineata ; Schistocerca gregaria ; insect ; Lepidoptera ; Noctuidae ; Coleoptera ; Chrysomelidae ; Orthoptera ; Acrididae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The role of the alkyl terminus of green leaf volatile (GLV) molecules in olfactory reception and inactivation was examined in three diverse insect species: the beet armyworm,Spodoptera exigua (Lepidoptera); the Colorado potato beetle,Leptinotarsa decemlineata (Coleoptera); and the desert locust,Schistocerca gregaria (Orthoptera), using selectively fluorinated analogs of GLVs and electroantennograms (EAGs). When only the magnitude of the depolarization of the EAG is considered (a measure of reception), the order of effectiveness was 1-hexanol (6:OH)=(Z)-3-6:OH 〉 5,5,6,6,6-pentafluoro-(Z)-3-6:OH =5,5-difluoro-(Z)-3-6:OH ≫ 5,5,6,6,6-pentafluoro-6: OH. Percent recovery of the EAG (a measure of inactivation) was greater for the pentafluoro-(Z)-3-6: OH analog than for the difluoro-(Z)-3-6: OH analog. Our results show that the alkyl end of GLV molecules plays an important role not only in reception, but also inactivation processes in insect olfaction. Furthermore, specificities of these two processes may differ.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00983801
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