ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 10 (1965), S. 69-96 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 34 (1969), S. 2180-2182 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 25 (1980), S. 373-380 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Une phéromone sexuelle produite par la femelle de ces chalcidiens parasites est utilisée pour aider à l'accouplement du mâle. ChezBrachymeria lasus (Walker) la réponse du mâle à la phéromone reste constante avec le viellissement de celui-ci, mais l'activité de la phéromone diminue avec l'âge de la femelle. La zone d'action de la phéromone est d'environ 3 cm, à des distances plus grandes les mâles ne répondent plus et poursuivent leurs déplacements au hasard. Le lieu de production de la phéromone de ces espèces est encore indéterminé, mais le thorax détermine la plus forte réponse copulatoire du mâle et la région de la glande de Dufour provoque le plus fort % de réponses sensorielles du mâle.
    Notes: Abstract A female-produced sex pheromone in these chalcid parasitoids serves to aid mate recognition by the male. InBrachymeria lasus (Walker) male response to the pheromone remains constant with increasing male age, but pheromone activity declines with age in females. The active space of the pheromone is approximately 3 cm; at greater distances males do not respond and continue random movements. The site of pheromone production in these species remains undefined, although the thorax elicited greatest male courtship response, and the Dufour's gland area the highest % of male sensory responses.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 25 (1980), S. 349-355 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Le comportement sexuel deBrachymeria lasus (Walker) consiste en une suite de composantes éthologiques discrètes et stéréotypées qui s'achèvent par la copulation. Le comportement d'approche deB. lasus est semblable à celui deB. intermedia (Nees), mais l'accouplement entre ces 2 espèces est empêché par des différences qualitatives dans les composantes comportementales qui précèdent les essais de coït. Il n'y a donc pas d'hybridation entre ces espèces; ce qui est confirmé par le sexe et la morphologie de la descendance de couples réciproques de ces 2 congénères.
    Notes: Abstract Brachymeria lasus (Walker) courtship behavior consists of a sequence of discrete, stereotypic behavioral components which culminate in copulation. Courtship behavior ofB. lasus is similar to that reported for the congener,B. intermedia (Nees); however, interbreeding between these species is obstructed by qualitative differences in behavioral components preceeding copulatory attempts. No hybridization between these species occurred, evidenced by the sex and morphology of resultant progeny of reciprocal pairings of these congeners.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Au cours de la décennie 1961–1971,Exenterus amictorius, est devenu le principal parasite de la TenthrèdeDiprion similis (Hartig), au Wisconsin. Onze parasites secondaires se sont associés àE. amictorius durant la même période: neufs endémiques à l'Amérique du Nord et deux introduits, mais non-récents. De ces parasites, quatre n'avaient jamais été élevés à partir deD. similis auparavant, trois reconnus autrefois comme parasites primaires se sont trouvés être des hyperparasites, et quatre décrits auparavant comme hyperparasites ont étendu leur distribution àE. amictorius. Tous les hyperparasites sont des hyménoptères appartenant aux familles suivantes:Pteromalidae (5),Ichneumonidae (3),Eulophidae (1),Eupelmidae (1), etTorymidae (1).
    Notes: Abstract In a 10 year period,Exenterus amictorius (Panzer) has become the dominant primary parasite of the introduced pine sawfly,Diprion similis (Hartig), in Wisconsin. During this time (1961–71), eleven secondary parasites have associated themselves withE. amictorius. Nine are endemic to North America and two are exotic but not of recent origin. Of these, four had never been reared previously fromD. similis cocoons; three, previously recorded as primaries, were recorded as hyperparasites; and four, previously recorded as hyperparasites, had broadened their range to includeE. amictorius. All hyperparasites are hymenopterans in the familiesPteromalidae (5),Ichneumonidae (3),Eulophidae (1),Eupelmidae (1), andTorymidae (1).
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 963-964 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1961, Esenther et al.4 discovered that woods decayed by the fungus Lenzites trabea Pers. ex Fr. produced a substance which was attractive to the eastern subterranean termite, Reticulitermes flavipes. This substance was later found to function as a trail-following substance for both R. flavipes ...
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-1561
    Keywords: Social wasp ; Polistes fuscatus ; Hymenoptera ; Vespidae ; Formicidae ; ant repellent ; defensive allomone ; fatty acid esters ; methyl myristate ; methyl palmitate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two active components were isolated from the ant repellent secretion produced by glandular cells on the sixth (terminal) gastral sternite ofPolistes fuscatus (F.) females. One of the components was identified as methyl palmitate. Field bioassays with synthetic methyl palmitate showed it had repellent activity againstSolenopsis geminata (F.)Forelius pruinosus (Roger), andPheidole sp. The effectiveness of the repellent was greater againstF. pruinosus andPheidole sp. than againstS. geminata. Four methyl ester homologs of methyl palmitate also were field tested for repellent activity: methyl myristate had repellent activity against all three ant species, whereas methyl stearate, methyl linoleate, and methyl linolenate exhibited no repellency.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-1561
    Keywords: Neodiprion lecontei ; Hymenoptera ; Diprionidae ; 3,7-di-methylpentadecan-2-ol acetate ; trapping ; pheromone ; time of year ; time of day
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Field tests using the sawfly pheromone [3,7-dimethylpentadecan-2-ol acetate with (−)-erythro configuration (2S,3S)] were conducted near Gainesville, Florida, during 1978–1981 to determine the attraction ofNeodiprion lecontei males to baited traps with respect to time of year and time of day. Greatest numbers of males were caught during May, July, and September in traps placed within a pine stand from July 1978 to July 1979. Males were only caught between 1400 and 2000 hr on 10 dates in June and 10 dates in September–October 1980, and 10 dates in June 1981, with greatest catches from 1600–1800 hr. Catches in a synthetic-baited trap and in virgin female-baited traps were similar with respect to time of day.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 5 (1979), S. 237-249 
    ISSN: 1573-1561
    Keywords: Sawflies ; pheromone ; stereospecificity ; (−)-erythro configuration ; enantiomers ; chirality ; optical isomers ; Neodiprion lecontei
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The stereospecificity of the sawfly pheromone 3,7-dimethyl-2-pentadecanol acetate againstNeodiprion lecontei was studied. Twoerythro and a 1∶1 mixture ofthreo isomers (C-2 and C-3) were synthesized for this purpose. It was found that only one isomer with (−)-erythro configuration (2S, 3S) had biological activity. The potency of this synthetic pheromone was roughly identical to the one shown by the naturally occurring pheromone in this species.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-1561
    Keywords: Neodiprion sertifer ; European pine sawfly ; Hymenoptera ; Tenthredinidae ; 3,7-dimethylpentadecan-2-yl acetate and propionate ; optical isomers ; enantiomers ; esters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Among optical isomers of 3,7-dimethylpentadecan-2-ol (diprionol) acetate or propionate tested as synthetic attractants, the 2S, 3S, and 7S isomers were most effective in attracting the males ofNeodiprion sertifer in the field. The 2S, 3S, and 7R isomers showed weak activity, but the other optical isomers were not attractive. Capillary GC analysis showed that the natural pheromone from body extracts of females was identical with the synthetic acetate of diprionol in its GC behavior. However, the natural pheromone was about 100-fold stronger than the most purified synthetic acetate of 2S,3S,7S-diprionol in the field. As a result of various isomer combination studies, it was found that the acetate of 2S,3R,7R-diprionol, when added to 2S,3S,7S-diprionol preparation at a low concentration, increased the catch by the latter. It was therefore concluded that the above combination of the optical isomers could account for the major sex attractancy in this species.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...