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  • 1
    Electronic Resource
    Electronic Resource
    Effect of physiological and experiential state ofBactrocera tryoni flies on intra-tree foraging behavior for food (bacteria) and host fruit (1991)
    Springer
    Oecologia 87 (1991), S. 394-400 
    Details
    ISSN: 1432-1939
    Keywords: Physiological state ; Experience ; Foraging ; Bacteria as insect food ; Bactrocera tryoni
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Using caged host trees on which we manipulated food and oviposition sites, we investigated the foraging behavior of individually-releasedBactrocera tryoni (Diptera: Tephritidae) females in relation to state of fly hunger for protein, presence or absence of bacteria as a source of protein, degree of prior experience with host fruit, and quality of host fruit for oviposition. One aim was to evaluate whether it is immature or matureB. tryoni females that are responsible for initially inoculating host fruit surfaces with “fruit-fly-type” bacteria, the odor of which is known to attractB. tryoni females. We found that 3-week-old immature females provided with sucrose but deprived of protein from eclosion had a much greater propensity than 3-week-old protein-fed mature females to visit vials containing fruit-fly-type bacteria, irrespective of whether vials were associated with adjacent host fruit or not. In the absence of associated bacteria in vials, immature females had a much lower propensity than mature females to visit host fruit. In the presence of bacteria in vials, however, propensity of immature and mature females to visit fruit was about equal. Mature (but not immature) females were more inclined to visit fruit that ranked higher for oviposition (nectarines) than fruit that ranked lower (sweet oranges). Mature females that attempted oviposition during a single 3-min exposure period to a nectarine prior to release were much more likely to find a nectarine than were mature females naive to fruit or immature females with or without prior contact with fruit. Exposure to a nectarine before release did not affect the propensity of either mature or immature females to alight on an odorless visual model of a nectarine, however. As judged by numbers of leaves visited, protein-deprived immature females were more active than protein-fed mature females, irrespective of the sorts of resources on a tree. Together, our findings lead us to conclude that (1) the firstB. tryoni females to arrive on the fruit of a host tree and therefore inoculate the fruit with fruit-fly-type bacteria are unlikely to be sexually immature, but to be mature as a result of having earlier acquired protein elsewhere, (2) the odor of colonies of fruit-fly-type bacteria when associated with host fruit will attract protein-hungry but not protein-fed females, and (3) the odor of the fruit itself will attract mature females (especially experienced ones) but not immature females. These findings illustrate the value of considering jointly the state of a resource patch together with the physiological and experiential state of the individual when investigating the foraging behavior of an insect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00634597
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  • 2
    Electronic Resource
    Electronic Resource
    Facilitation in Ovipositional Behavior of Bactrocera tryoni Flies (1999)
    Springer
    Journal of insect behavior 12 (1999), S. 815-832 
    Details
    ISSN: 1572-8889
    Keywords: Bactrocera tryoni ; social facilitation ; contests ; encounters ; oviposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mature female Queensland fruit flies, Bactrocera tryoni Froggatt, released into canopies of field-caged trees containing host fruit, did not discriminate between fruit having or lacking two resident conspecific females when selecting fruit on which to alight. When released individually onto a fruit, mature females showed no greater or lesser propensity to initiate boring with the ovipositor into fruit having or lacking a resident female engaged in pre-ovipositional or post-ovipositional behavior. However, boring propensity of introduced females was significantly enhanced or facilitated when released onto fruit on which a conspecific female was in the act of ovipositing. Introduced females were significantly more prone to initiate boring into high-ranking fruit (nectarines) than low-ranking fruit (lemons) and to do so when having a high rather than a low egg load. Neither fruit type nor egg load of introduced females had a significant effect on the occurrence of encounters between introduced and resident females, on the occurrence of contests, or on the propensity of introduced females to initiate boring in the presence of a resident female. Among introduced females, there was a consistent trend to initiate boring earlier in the presence than in the absence of a resident female. We discuss circumstances, likely to be narrow, under which boring propensity of an intruding female might be facilitated in the presence of a resident female.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1020909227680
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  • 3
    Electronic Resource
    Electronic Resource
    Chemistry of fruit flies: Nature of glandular secretion and volatile emission ofBactrocera (bactrocera) cacuminatus (Héring) (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 485-495 
    Details
    ISSN: 1573-1561
    Keywords: Bactrocera cacuminatus ; Bactrocera oleae ; Diptera ; Tephritidae ; olive fly ; spiroacetal ; ketoalcohol ; chirality
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The major component of the rectal glandular extract and volatile emission of maleBactrocera cacuminatus is racemic 1,7-dioxaspiro[5.5]undecane. l-Hydroxy-5-nonanone as its open chain form, together with 6-n-butyl-3,4-dihydro-2H-pyran are minor components. 1,7-Dioxaspiro[5.5]undecan-4-ol is present at a low level and is shown to be exclusively the diastereomer with an equatorial hydroxy group by comparison with synthesized samples of both epimers. Examination of the trifiuoroacetate by chiral gas chromatography has established the (4S,6S) stereochemistry (ca. 80% ee). The presence of 1,7-dioxaspiro[5.5]undecan-3-ol, or its isomerization product, 1,6-dioxaspiro[4.5]decan-2-ylmethanol, could not be confirmed. Trapping of the volatiles released by sexually mature male flies at dusk revealed that a number of the glandular components described above are released at mating time. Reexamination of the glandular secretion of sexually mature female olive flies (B. oleae) has failed to confirm the presence of any 1,7-dioxaspiro[5.5]undecanols, with the only volatile component (other than fatty acids) being 1,7-dioxaspiro[5.5]undecane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994347
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  • 4
    Electronic Resource
    Electronic Resource
    Chemistry of fruit flies: Glandular secretion ofBactrocera (Polistomimetes) visenda (Hardy) (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 2169-2176 
    Details
    ISSN: 1573-1561
    Keywords: Bactrocera visenda ; Diptera ; Tephritidae ; fruit fly ; 3-methyl-2-butenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The major component (〉90% of volatiles) of the male rectal glandular extract of the nonpest speciesBactrocera visenda (Hardy) is 3-methyl2-butenyl acetate, with minor components being the isomeric 3-methyl-3-butenyl acetate, the homologous esters, 3-methyl-2-butenyl propanoate and 3-methyl-2-butenyl formate, along with 3-methyl-2-buten-1-ol, 3-methyl-2-butenal, and 3-methylbutyl acetate. None of these compounds has been identified previously from aBactrocera species, supporting the view thatBactrocera visenda is taxonomically distant from otherBactrocera species identified from the Australian mainland. This collection of compounds adds to the known types utilized by dipteran species and emphasizes their extensive biosynthetic capability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984944
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  • 5
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    Adoption of a national antimicrobial guide (SWAB-ID) in the Netherlands (2015)
    Springer
    Details
    Publication Date: 2015-10-22
    Print ISSN: 0031-6970
    Electronic ISSN: 1432-1041
    Topics: Chemistry and Pharmacology , Medicine
    Published by Springer
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  • 6
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    Effect of physiological and experiential state ofBactrocera tryoni flies on intra-tree foraging behavior for food (bacteria) and host fruit (1991)
    Springer
    Details
    Publication Date: 1991-01-01
    Print ISSN: 0029-8549
    Electronic ISSN: 1432-1939
    Topics: Biology
    Published by Springer
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