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  • 1
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    Potential for suppressingDiprion similis (Hymenoptera: Diprionidae) with pheromone trapping: A population model (1975)
    Springer
    Details
    Publication Date: 1975-09-01
    Print ISSN: 1438-3896
    Electronic ISSN: 1438-390X
    Topics: Biology
    Published by Springer
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    PAPER CURRENT
  • 2
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    Population density effects on fecundity of Hippelates pusio Loew (Diptera: Chloropidae) (1972)
    Springer
    Details
    Publication Date: 1972-01-01
    Print ISSN: 0029-8549
    Electronic ISSN: 1432-1939
    Topics: Biology
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    Daily rhythm ofSynanthedon pictipes (Lepidoptera: Aegeriidae) female calling behavior in Wisconsin: Temperature effects (1975)
    Springer
    Entomologia experimentalis et applicata 18 (1975), S. 367-376 
    Details
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Le comportement d'appel sexuel des femelles deSynanthedon pictipes est étudié à diverses températures constantes et le rythme journalier de ce comportement d'appel est précisé, dans les conditions du milieu naturel, à Door County, dans le Wisconsin. Pour des températures constantes, inférieures à 21° ou supérieures à 41°, aucun appel sexuel des femelles ne se manifeste. A l'intérieur de ces limites, la température influence fortement l'intensité de l'appel, apprécié par la durée moyenne du temps d'appel par femelle et par le pourcentage de femelles qui manifestent ce comportement. La température optimum est comprise entre 27° et 32°. Dans les conditions du milieu naturel l'appel sexuel des femelles se produit uniquement pendant le jour. Il ne commence pas avant 7 h 45 le matin et ne se prolonge pas au-delà de 18 h 15 le soir, d'après nos observations journalières poursuivies pendant 12 jours consécutifs. L'activité maximum des femelles (comportement d'appel) se terminant entre 10 h 45 et 13 h 15. Les matinées fraîches tendent à retarder le déclenchement du comportement d'appel sexuel, mais la phase d'appel se termine d'autant plus tôt qu'elle commence plus tôt. Au dessous de 18° on n'observe plus d'activité d'appel sexuel des femelles. Des femelles soumises à une température de 14° en début ou au milieu de la matinée reprennent leur comportement d'appel dès le retour dans des conditions favorables. L'appel sexuel des femelles se déroule selon des périodes d'environ 68 min., qui se dépètent, en moyenne, 2,7 fois par jour. Le premier appel des femelles intervient en moyenne 3 heures 7 après l'émergence, dans les conditions naturelles.
    Notes: Abstract Female calling behavior ofSynanthedon pictipes at various constant temperatures and the daily calling rhythm under field conditions at Door County, Wisconsin were determined. At constant temperatures, no calling occurred below 21° or above 41°. Both the mean calling time per female and the percentage of females which called during the replicated 3-h observational period were strongly affected by temperature within the above limits. The optimum was between 27° and 32°. Calling activity in the field occurred only during daytime hours. It began not earlier than 7:45 AM and was terminated not later than 6:15 PM during the 12-day period of our study. Peak calling occurred between 10:45 AM and 1:15 PM (mean 11:45 AM). Cool mornings tended to delay calling. Also, the earlier the initiation of calling the earlier the termination No calling occurred at temperatures below 18°. Females exposed experimentally to 14° during the early or middle part of the day resumed calling upon return to favorable conditions. Females called 2.7 times per day for 68 min per period. The mean time from emergence to initiation of calling was 3.7 hr under field conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00628366
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  • 4
    Electronic Resource
    Electronic Resource
    Population density effects on fecundity of Hippelates pusio Loew (Diptera: Chloropidae) (1972)
    Springer
    Oecologia 9 (1972), S. 341-348 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A schematic model is constructed illustrating the pathways and mechanisms of adult density effects on birth rate that have been reported to operate in various taxa of insects. With this model as a guide, experimetal data were collected from laboratory populations of Hippelates pusio Loew within the range of 0.15 to 25 flies per cm3 (sex ratio 1:1), which revealed: a) that adult density did not affect oviposition rate via competition for oviposition site, b) the rates of oviposition for virgin and mated females were not significantly different, and c) density did not affect frequency of copulation to a degree detectable in the hatchability of eggs. These data and previous knowledge on the reproductive biology of Hippelates pusio indicate that the birth rate of this species is independent of adult density, within then density range investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345337
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  • 5
    Electronic Resource
    Electronic Resource
    Field evidence of synergism and inhibition in the sesiidae sex pheromone system (1977)
    Springer
    Journal of chemical ecology 3 (1977), S. 57-64 
    Details
    ISSN: 1573-1561
    Keywords: Sesiidae ; Synanthedon ; sex pheromones ; inhibition ; synergism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The E,Z, Z,Z, and Z,E geometric isomers of 3,13 octadecadien-1-ol acetate were used singly and in binary combinations to trap sesiids in Wisconsin cherry orchards. The Z,E isomer alone did not capture any sesiids. A synergistic effect, however, of Z,E onSynanthedon pictipes response to its pheromone E,Z was demonstrated for the first time. Strong inhibitory effects of the Z,Z isomer onS. pictipes response to E,Z, and of the E,Z isomer onS. scitula response to Z,Z, were found. As little as 0.5% of Z,Z in E,Z completely inhibited theS. pictipes response. This species' response was also reduced by 85% when Z,Z was evaporated at 4 points, each ca. 6 m from the pheromone trap. Consistencies and discrepancies of the data with relevant experimental results from other geographical areas are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988133
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