Library

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
    Springer
    Entomologia experimentalis et applicata 38 (1985), S. 195-199 
    ISSN: 1570-7458
    Keywords: melon fly ; Dacus cucurbitae ; demography ; life tables ; host studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Le développement préimaginal et les taux de survie d'une souche sauvage de D. cucurbitae de Hawaí sur six hôtes courants ont été examinés à 25°C. Ces résultats ont été combinés aux informations récoltées sur la survie des adultes, la fécondité et la fertilité pour réaliser des tables de vie. La durée du stade oeuf est légèrement supérieure à un jour pour cette espèce. La durée de développement de l'éclosion de l'oeuf à l'imago et les taux de survie ont été respectivement de 17 à 20 jours et de 35 à 85% suivant les hôtes. La fécondité brute (ponte totale) a été de 1293 oeufs par femelle, tandis qui ‘la fertilité’ (nombre total d'oeufs fertiles pondéré par les taux d'éclosion et de survie des adultes) était de 518 oeufs fertiles par femelle. Le taux d'accroissement (λ) variait de 1,08 à 1,12 suivant l'hôte sur lequel D. cucurbitae a été élevé. La proportion d'adultes dans une distribution en âge stable était d'environ 14% sur tous les hôtes.
    Notes: Abstract Preadult development and survival rates for a wild strain of melon fly in Hawaii were examined when reared on six common hosts at 25°C. These data were combined with information gathered on adult survival, fecundity and fertility in order to construct life tables. The duration of the egg stage was slightly over 1 day for this species. Depending on host, larval-to-adult development and survival rates were 17–20 days and 35–85%, respectively. Gross fecundity (total eggs) was 1293 eggs/♀ while net fertility (total fertile eggs weighted by hatch and adult survival) was 518 fertile eggs/♀. The finite rate of increase (λ) for the species was conditional on the host on which it was reared and ranged from 1.08 to 1.12. The percent of adults in the stable age distribution averaged around 14% over all hosts.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 56 (1990), S. 125-130 
    ISSN: 1570-7458
    Keywords: C. capitata ; oviposition ; irradiation ; sex-ratio
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les comportements de ponte et de repos et le nombre de rencontres de mouches irradiées ou non, d'une souche de laboratoire de C. capitata ont été examinés sur des pommes suspendues sur des goyaviers dans des cages, hors du laboratoire, à Hawaï. Le nombre de femelles non-irradiées stationnant sur les fruits était réduit de plusieurs fois par la présence de femelles irradiées, soit seules, soit avec des mâles irradiés, mais non par la présence exclusive de mâles irradiés. De même, le nombre de femelles non-irradiées en train de pondre, ainsi que la durée des pontes étaient réduits par la présence de femelles irradiées. Dans les cages témoins (sans mouche irradiée), les femelles restent en moyenne 255,9±15,0 sec (SE) sur les fruits, tandis que les femelles nonirradiées et irradiées mélangées dans les cages traitées, séjournent respectivement 157±19,8 et 77,5±7,5 sec sur les fruits. Les femelles irradiées se sont comportées capricieusement sur les fruits et ont souvent eu des contacts physiques avec les autres mouches. En réduisant la ponte des femelles normales, les femelles irradiées peuvent contribuer à supprimer les populations sauvages dans les programmes de lâchers d'insectes stériles.
    Notes: Abstract The behavior of nonirradiated and radiation-sterilized laboratory-adapted Mediterranean fruit flies, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), was observed on apples hung on guava trees in outdoor cages in Hawaii. Oviposition and resting behavior, and physical encounters between flies were recorded. The numbers of nonirradiated females observed resting on fruit were reduced several fold by the presence of irradiated females, either alone or with irradiated males, but not by irradiated males alone. Similarly, the number and duration of nonirradiated females observed ovipositing was reduced by the presence of irradiated females. In control cages (all nonirradiated flies), females averaged 255.9±15.0 (SE) seconds on fruit, while nonirradiated and irradiated females in the mixed (treatment) cage averaged 157±19.8 seconds and 77.5±7.5 seconds on fruit, respectively. Irradiated females behaved skittishly on fruit and frequently engaged in physical encounters with other flies. By reducing oviposition of normal females, irradiated females may help suppress wild populations in sterile-insect release programs.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 37 (1985), S. 207-211 
    ISSN: 1570-7458
    Keywords: oviposition ; Ceratitis capitata ; density ; fruit size of host ; clutch size
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Einem Laboratoriumsstamm von Ceratitis capitata (Wiedemann) wurden Trauben, Pflaumen, Aepfel und Pfirsiche zur Eiablage vorgelegt. Der Fruchtdurchmesser war stark korreliert mit der Eizahl pro Eiablage. Die Grösse der Eihaufen war 3,9±0,3 bei Trauben (20 mm) und 14,0±0,7 bei Aepfeln (70 mm). Wenn geschälte und mit Parafilm® eingehüllte ganze Früchte und Fruchtscheiben vorgelegt wurden, war die Fruchtgrösse wichtiger als der Fruchttyp für die Grösse der Eiablage. Eiablagen, bei denen die Fruchthaut durchbohrt werden musste, waren grösser als Eiablagen durch Parafilm oder in perforierte Früchte.
    Notes: Abstract A laboratory strain of Ceratitis capitata (Wiedemann) was presented with grapes, plums, apples and peaches for oviposition. Fruit diameter was highly correlated with the number of eggs/oviposition. Clutch size was 3.9±0.3 for grapes (20 mm) compared with 14.0±0.7 for apples (70 mm). When Parafilm®-enveloped whole peeled fruits and smaller spheres of fruit flesh were offered, fruit size proved more important than fruit type in determining egg clutch sizes. Ovipositions that required the puncture of fruit skin gave larger clutches than ovipositions through Parafilm or into punctured fruit.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1573-1561
    Keywords: Dacus cucurbitae ; Diptera ; Tephritidae ; melon fly ; cue-lure ; age effects ; pheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Laboratory-reared and wild adults of the melon fly,Dacus cucurbitae Coquillett, were tested for response to cue-lure at various ages. Virgin laboratory (4, 6, 8, 10, 12, and 14 days old) and wild (10, 12, 14, 16, 18, 20, and 22 days old) flies were released into outdoor field cages and trapped from 0800 until 1600 hr. Response of males to cue-lure increased with age and corresponded with sexual maturity for each strain. Females of both strains were relatively nonresponsive to cue-lure. Failure to eradicate in past male annihilation programs againstD. cucurbitae may be explained in part by the fact that only older males, which may have already mated with gravid females, respond to cue-lure.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 23 (1997), S. 1891-1900 
    ISSN: 1573-1561
    Keywords: Coffee fruit ; Coffea arabica ; host ; Mediterranean fruit fly ; Ceratitis capitata ; medfly ; analysis of volatiles ; attractant ; lure ; Diptera ; Tephritidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Twenty-eight volatile compounds from freshly crushed, ripe, dark red coffee fruit, Coffea arabica, were identified by dynamic headspace analysis techniques. Identifications were made on the basis of a comparison of Kovats indices and GC-MS spectra for unknowns and authentic samples. Of the compounds identified, 10 were alcohols, nine were aldehydes, five were ketones, and four were monoterpenes. The five most abundant volatiles in decreasing order were hexanal (21%), 2-(E)-hexenal (11%), 3-methyl-1-butanol (9.0%), 3-methyl-1-butanal (8.5%), and 1-hexanol (8.4%). The five least abundant volatiles of the 28 identified, in increasing order, were decanal (0.19%), methyl hexanoate (0.33%), pulegone (0.44%), α-isomenthone (0.45%), and 2-nonanone (0.55%). In preliminary tests, many of the identified volatiles attracted more female Mediterranean fruit flies than the control.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 15 (1989), S. 1931-1946 
    ISSN: 1573-1561
    Keywords: Litchi chinensis ; Sapindaceae ; Ficus refusa ; Ficus benjamina ; Ficus benghalensis ; Moraceae ; Ceratitis capitata ; Diptera ; Tephritidae ; Mediterranean fruit fly ; medfly ; α-copaene ; α-ylangene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Short-range attraction/feeding stimulation of male Mediterranean fruit flies [Ceratitis capitata (Wiedemann), (Diptera: Tephritidae)] to a stem extract of a host plant,Litchi chinensis Sonn. (Sapindaceae), and to milky exudates from stems of nonhost plants,Ficus retusa L. andF. benjamina L. (Moraceae), were attributed to the presence of the sesquiterpene α-copaene. The presence of α-copaene in the milky exudate from stems ofF. benghalensis L. is also suggested as eliciting similar behavioral responses in male medflies. The presence of minor quantities of α-ylangene in the plants and its contributory effects to the behavioral response of male medflies is discussed. Short-range attraction/feeding stimulation of male medflies to equal amounts of α-ylangene-free α-copaene samples (94.5%+), prepared from α-copaene-enriched angelica seed oil and copaiba oil, respectively, showed no difference in intensity of response. α-Ylangene elicited a slightly less intense response for male medflies than α-copaene.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...