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  • Ceratitis capitata  (2)
  • Springer  (2)
  • American Institute of Physics
  • Wiley
  • 1
    Electronic Resource
    Electronic Resource
    Behavioral responses of Ceratitis capitata flies to bait spray droplets and natural food (1992)
    Springer
    Entomologia experimentalis et applicata 64 (1992), S. 247-257 
    Details
    ISSN: 1570-7458
    Keywords: Ceratitis capitata ; bait sprays ; bird feces ; physiological state
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In studies carried out on field-caged non-fruiting host trees, we examined effects of environmental and adult physiological and experiential state factors on responses of released Mediterranean fruit flies, Ceratitis capitata (Wiedemann), to droplets of proteinaceous bait (PIB-7) with or without 20% insecticide (malathion). We confirmed that fresh PIB-7 is both attractive and phagostimulatory to protein-deprived medflies and found that presence of 20% malathion ultra low volume concentrate (ULVC) in PIB-7 droplets does not significantly repel medflies from approaching droplets but does significantly deter feeding on them. A single relatively fresh deposit of bird feces, an important source of protein for medflies in natural environments, attracted several times more laboratory-cultured and wild medflies than 20 droplets of 80% PIB-7/20% malathion ULVC (about the average number of droplets per m2 of plant canopy in aerial bait spray programs). Attraction to protein was significantly greater among wild medflies deprived of protein continuously from eclosion than among wild medflies that had recent (within 3 days) or continuous access to protein. Attraction to protein increased significantly with increasing age (2, 7 and 12 days) of protein-deprived wild medflies. But we found no significant positive impact of recent brief experience of wild medflies with protein on degree of subsequent attraction to protein. In final experiments that mimicked the size, density and distribution of bait spray droplets on tree foliage typical for an aerial medfly control program, very few (4%) or no released protein-deprived wild medflies found a bait droplet within the 15 min test period even though most found a single deposit of bird feces. We conclude that the effectiveness of aerial bait sprays against medflies might be enhanced substantially (and the proportion of infested area treated with bait spray reduced considerably) by (1) including synthetic equivalents of attractive components of bird feces in the spray mixture, and (2) adjusting spatial and temporal patterns of bait spray applications according to estimates of the composition and abundance of natural medfly food and the age structure of medfly adult populations in infested regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341088
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Survivorship, potential, and realized fecundity ofBiosteres tryoni [Hymenoptera: Braconidae], a larval parasitoid ofCeratitis capitata [Diptera: Tephritidae] (1989)
    Springer
    BioControl 34 (1989), S. 291-297 
    Details
    ISSN: 1573-8248
    Keywords: Biosteres tryoni ; Ceratitis capitata ; survivorship potential fecundity ; realized fecundity ; Biosteres tryoni ; Ceratitis capitata ; survie ; fécondité potentielle ; fécondité réelle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé LesBiosteres tryoni élevés en laboratoire atteignaient le sommet de leur maturation ovarienne le 5e jour après l'émergence chez les ♀♀ vierges et le 7e jour chez les ♀♀ accouplées. Quand il n'était pas permis aux ♀♀ de pondre, le contenu des oocytes était hydrolysé et réabsorbé. Cependant, quand des hôtes étaient disponibles pour la ponte, on notait une augmentation significative du taux de maturation des œufs. La moyenne de la fécondité réalisée durant la vie était 71,7±8,1 et 69,0±6,7 et la longévité moyenne était 13,5±0,9 et 15,1±0,6 jours pour les ♀♀ accouplées et les ♀♀ vierges respectivement.
    Notes: Abstract Laboratory-rearedBiosteres tryoni (Cameron) reached peak ovarian maturation on the 5th and 7th days after emergence in unmated and mated ♀♀, respectively. When ♀♀ were not allowed to oviposit, contents of the oocytes were hydrolyzed and reabsorbed. However, when hosts were available for oviposition a significant increase of egg maturation rate was noticed. Mean realized fecundity during the life span was 71.7±8.1 and 69.0±6.7, and mean longevity was 13.5±0.9 and 15.1±0.6 days for mated and unmated ♀♀ respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372468
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