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Journal articles on the topic 'Bactrocera tryoni'

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Published: 4 June 2021

Last updated: 20 February 2023

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1

Cruickshank, Leanne, Andrew J. Jessup, and David J. Cruickshank. "Interspecific crosses of Bactrocera tryoni (Froggatt) and Bactrocera jarvisi (Tryon) (Diptera: Tephritidae) in the laboratory." Australian Journal of Entomology 40, no. 3 (July 13, 2001): 278–80. http://dx.doi.org/10.1046/j.1440-6055.2001.00223.x.

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2

Pike, N., W. Y. S. Wang, and A. Meats. "The likely fate of hybrids of Bactrocera tryoni and Bactrocera neohumeralis." Heredity 90, no. 5 (April 25, 2003): 365–70. http://dx.doi.org/10.1038/sj.hdy.6800253.

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3

Wang, Y., H. Yu, K. Raphael, and A. S. Gilchrist. "Genetic delineation of sibling species of the pest fruit fly Bactocera (Diptera: Tephritidae) using microsatellites." Bulletin of Entomological Research 93, no. 4 (July 2003): 351–60. http://dx.doi.org/10.1079/ber2003249.

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AbstractUsing a large set of microsatellites, the genetic relationships between three closely related Australian fruit fly species, Bactrocera tryoni (Froggatt), B. neohumeralis (Hardy) and B. aquilonis(May) were investigated. Bactrocera tryoni and B. neohumeralis are sympatric, while B. aquilonis is allopatric to both. The sympatric species, B. tryoni and B. neohumeralis, were found to be genetically distinct. It is likely that despite differences in mating time between these two species, some gene flow still occurs. In contrast, the sibling species B. tryoni and B. aquilonis were found to be closely related, despite allopatry. The level of genetic divergence was similar to that found within eastern Australian populations of B. tryoni. Consideration of all available genetic data suggests that this similarity is not due to recent (i.e. within the last 30 years) displacement of B. aquilonis by B. tryoni from the B. aquilonis region (north-western Australia). Instead the data suggests that, at least in the areas sampled, asymmetrical hybridization may have occurred over a longer timescale.

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4

Zhao, J. T., M. Frommer, J. A. Sved, and A. Zacharopoulou. "Mitotic and polytene chromosome analyses in the Queensland fruit fly, Bactrocera tryoni (Diptera: Tephritidae)." Genome 41, no. 4 (August 1, 1998): 510–26. http://dx.doi.org/10.1139/g98-053.

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The Queensland fruit fly, Bactrocera tryoni, like the Mediterranean fruit fly, Ceratitis capitata, has a diploid complement of 12 chromosomes, including five pairs of autosomes and a XX/XY sex chromosome pair. Characteristic features of each chromosome are described. Chromosomal homology between B. tryoni and C. capitata has been determined by comparing chromosome banding pattern and in situ hybridisation of cloned genes to polytene chromosomes. Although the evidence indicates that a number of chromosomal inversions have occurred since the separation of the two species, synteny of the chromosomes appears to have been maintained.Key words: tephritid fruit fly, Bactrocera tryoni, polytene chromosomes, in situ hybridisation, chromosomal homology.

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5

Mas, Flore, Lee-Anne Manning, Maryam Alavi, Terry Osborne, Olivia Reynolds, and Andrew Kralicek. "Early detection of fruit infested with Bactrocera tryoni." Postharvest Biology and Technology 175 (May 2021): 111496. http://dx.doi.org/10.1016/j.postharvbio.2021.111496.

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6

Clarke, Anthony R., Katharina Merkel, Andrew D. Hulthen, and Florian Schwarzmueller. "Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) overwintering: an overview." Austral Entomology 58, no. 1 (September 7, 2018): 3–8. http://dx.doi.org/10.1111/aen.12369.

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7

Booth, Yvonne K., William Kitching, and James J. De Voss. "Biosynthesis of the Spiroacetal Suite in Bactrocera tryoni." ChemBioChem 12, no. 1 (December 9, 2010): 155–72. http://dx.doi.org/10.1002/cbic.201000481.

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8

Valerio, Federica, Nicola Zadra, Omar Rota-Stabelli, and Lino Ometto. "The Impact of Fast Radiation on the Phylogeny of Bactrocera Fruit Flies as Revealed by Multiple Evolutionary Models and Mutation Rate-Calibrated Clock." Insects 13, no. 7 (June 30, 2022): 603. http://dx.doi.org/10.3390/insects13070603.

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Several true fruit flies (Tephritidae) cause major damage to agriculture worldwide. Among them, species of the genus Bactrocera are extensively studied to understand the traits associated with their invasiveness and ecology. Comparative approaches based on a reliable phylogenetic framework are particularly effective, but several nodes of the Bactrocera phylogeny are still controversial, especially concerning the reciprocal affinities of the two major pests B. dorsalis and B. tryoni. Here, we analyzed a newly assembled genomic-scaled dataset using different models of evolution to infer a phylogenomic backbone of ten representative Bactrocera species and two outgroups. We further provide the first genome-scaled inference of their divergence by calibrating the clock using fossil records and the spontaneous mutation rate. The results reveal a closer relationship of B. dorsalis with B. latifrons than to B. tryoni, contrary to what was previously supported by mitochondrial-based phylogenies. By employing coalescent-aware and heterogeneous evolutionary models, we show that this incongruence likely derives from a hitherto undetected systematic error, exacerbated by incomplete lineage sorting and possibly hybridization. This agrees with our clock analysis, which supports a rapid and recent radiation of the clade to which B. dorsalis, B. latifrons and B. tryoni belong. These results provide a new picture of Bactrocera phylogeny that can serve as the basis for future comparative analyses.

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9

Pike, Nathan, and Alan Meats. "Potential for mating between Bactrocera tryoni (Froggatt) and Bactrocera neohumeralis (Hardy) (Diptera: Tephritidae)." Australian Journal of Entomology 41, no. 1 (January 2002): 70–74. http://dx.doi.org/10.1046/j.1440-6055.2002.00256.x.

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10

Drew, R. A. I., and D. M. Lambert. "On the Specific Status of Dacus (Bactrocera) aquilonis and D. (Bactrocera) tryoni (Diptera: Tephritidae)." Annals of the Entomological Society of America 79, no. 6 (November 1, 1986): 870–78. http://dx.doi.org/10.1093/aesa/79.6.870.

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11

BLACKET, MARK J., LINDA SEMERARO, and MALLIK B. MALIPATIL. "Barcoding Queensland Fruit Flies ( Bactrocera tryoni ): impediments and improvements." Molecular Ecology Resources 12, no. 3 (February 27, 2012): 428–36. http://dx.doi.org/10.1111/j.1755-0998.2012.03124.x.

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12

Kempraj, Vivek, Soo Jean Park, and Phillip W. Taylor. "γ‐Octalactone, an effective oviposition stimulant of Bactrocera tryoni." Journal of Applied Entomology 143, no. 10 (October 23, 2019): 1205–9. http://dx.doi.org/10.1111/jen.12711.

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13

Park, Soo J., Gunjan Pandey, Cynthia Castro-Vargas, John G. Oakeshott, Phillip W. Taylor, and Vivian Mendez. "Cuticular Chemistry of the Queensland Fruit Fly Bactrocera tryoni (Froggatt)." Molecules 25, no. 18 (September 12, 2020): 4185. http://dx.doi.org/10.3390/molecules25184185.

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The cuticular layer of the insect exoskeleton contains diverse compounds that serve important biological functions, including the maintenance of homeostasis by protecting against water loss, protection from injury, pathogens and insecticides, and communication. Bactrocera tryoni (Froggatt) is the most destructive pest of fruit production in Australia, yet there are no published accounts of this species’ cuticular chemistry. We here provide a comprehensive description of B. tryoni cuticular chemistry. We used gas chromatography-mass spectrometry to identify and characterize compounds in hexane extracts of B. tryoni adults reared from larvae in naturally infested fruits. The compounds found included spiroacetals, aliphatic amides, saturated/unsaturated and methyl branched C12 to C20 chain esters and C29 to C33 normal and methyl-branched alkanes. The spiroacetals and esters were found to be specific to mature females, while the amides were found in both sexes. Normal and methyl-branched alkanes were qualitatively the same in all age and sex groups but some of the alkanes differed in amounts (as estimated from internal standard-normalized peak areas) between mature males and females, as well as between mature and immature flies. This study provides essential foundations for studies investigating the functions of cuticular chemistry in this economically important species.

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14

Ekanayake, Wasala M. T. D., Anthony R. Clarke, and Mark K. Schutze. "Close‐distance courtship of laboratory reared Bactrocera tryoni (Diptera: Tephritidae)." Austral Entomology 58, no. 3 (August 2018): 578–88. http://dx.doi.org/10.1111/aen.12365.

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15

Ekanayake, Wasala M. T. D., Mudalige S. H. Jayasundara, Thelma Peek, Anthony R. Clarke, and Mark K. Schutze. "The mating system of the true fruit fly Bactrocera tryoni and its sister species, Bactrocera neohumeralis." Insect Science 24, no. 3 (May 25, 2016): 478–90. http://dx.doi.org/10.1111/1744-7917.12337.

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16

Weldon, C. W., S. Yap, and P. W. Taylor. "Desiccation resistance of wild and mass-reared Bactrocera tryoni (Diptera: Tephritidae)." Bulletin of Entomological Research 103, no. 6 (July 18, 2013): 690–99. http://dx.doi.org/10.1017/s0007485313000394.

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AbstractIn pest management programmes that incorporate the sterile insect technique (SIT), the ability of mass-reared insects to tolerate dry conditions may influence their survival after release in the field. In the present study, desiccation resistance of adult mass-reared Queensland fruit flies, Bactrocera tryoni (Frogatt) (Diptera: Tephritidae), that are routinely released in SIT programmes was compared with that of wild flies at 1, 10 and 20 days after adult eclosion. Under dry conditions without access to food or water, longevity of mass-reared B. tryoni was significantly less than that of their wild counterparts. Desiccation resistance of mass-reared flies declined monotonically with age, but this was not the case for wild flies. The sharp decline in desiccation resistance of mass-reared flies as they aged was likely explained by decreased dehydration tolerance. As in an earlier study, desiccation resistance of females was significantly lower than that of males but this was particularly pronounced in mass-reared females. Female susceptibility to dry conditions corresponded with declining dehydration tolerance with age and associated patterns of reproductive development, which suggests that water content of their oocyte load is not available for survival during periods of water stress.

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17

Muthuthantri, Sakuntala, Derek Maelzer, Myron P. Zalucki, and Anthony R. Clarke. "The seasonal phenology of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in Queensland." Australian Journal of Entomology 49, no. 3 (August 22, 2010): 221–33. http://dx.doi.org/10.1111/j.1440-6055.2010.00759.x.

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18

PEREZ-STAPLES, D., A. M. T. HARMER, and P. W. TAYLOR. "Sperm storage and utilization in female Queensland fruit flies (Bactrocera tryoni)." Physiological Entomology 32, no. 2 (June 2007): 127–35. http://dx.doi.org/10.1111/j.1365-3032.2006.00554.x.

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19

Dominiak, B. C., H. S. Mavi, and H. I. Nicol. "Effect of town microclimate on the Queensland fruit fly Bactrocera tryoni." Australian Journal of Experimental Agriculture 46, no. 9 (2006): 1239. http://dx.doi.org/10.1071/ea04217.

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Weekly data from the urban and rural environments of numerous Australian inland towns were used to assess the impact of urban environments on the potential growth rate of the Queensland fruit fly. The urban environments were warmer and more moist than adjacent rural environments, making rural landscapes less attractive for fruit fly. Further analysis of climatic data revealed an acute negative water balance during the summer season. Under this harsh environment, the health and greenness of urban backyards and parks is maintained with frequent use of urban irrigation. This study aims to quantify the impact of urban hydrology on environmental conditions for the population potential of Queensland fruit fly in south-eastern New South Wales. CLIMEX, a climate-driven simulation model, was used in this study. Results indicated that throughout the winter season, low temperatures kept the Queensland fruit fly under control, irrespective of any other factor, including favourable moisture conditions. During summer, moisture was the major limiting factor. Even partial irrigation reduced the limiting effects of the deficiency of rainfall often experienced during midsummer. Irrigation also resulted in a large increase in the duration of the favourable period for the potential growth of fruit fly and an almost complete removal of unfavourable periods. When irrigation water was applied at optimal or excessive levels, the duration of favourable conditions for the Queensland fruit fly extended beyond the summer season. For the Queensland fruit fly, towns appear to be oases compared with the surrounding rural desert. Queensland fruit fly is unlikely to travel freely between towns, minimising chances of reinvasion once a resident population has been eliminated.

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20

Zhao, J. T. "Genetic and Molecular Markers of the Queensland Fruit Fly, Bactrocera tryoni." Journal of Heredity 94, no. 5 (September 1, 2003): 416–20. http://dx.doi.org/10.1093/jhered/esg088.

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21

Lawson, Kiaran K. K., and Mandyam V. Srinivasan. "Contrast sensitivity and visual acuity of Queensland fruit flies (Bactrocera tryoni)." Journal of Comparative Physiology A 206, no. 3 (February 3, 2020): 419–28. http://dx.doi.org/10.1007/s00359-020-01404-y.

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22

Tasnin, Mst Shahrima, Rehan Silva, Katharina Merkel, and Anthony R. Clarke. "Response of Male Queensland Fruit Fly (Diptera: Tephritidae) to Host Fruit Odors." Journal of Economic Entomology 113, no. 4 (May 15, 2020): 1888–93. http://dx.doi.org/10.1093/jee/toaa084.

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Abstract The surveillance and management of Dacini fruit fly pests are commonly split by fly gender: male trapping focuses on the dacine ‘male-lures’, whereas female trapping focuses on lures based on host-fruit volatiles. Although the males of several Dacini species have been reported to be attracted to host fruit volatiles, the option of using host-fruit traps for males has, to date, been ignored. Males of the cue-lure responsive fruit fly Bactrocera tryoni (Froggatt) have been recorded as responding to host-fruit volatile blends, but it is not known how frequently this happens, if it is age-dependent, or the strength of the response relative to cue-lure throughout the year. Here, we conducted an olfactometer experiment to test the lifetime (weeks 1–15) response of B. tryoni males to the odor of tomato, a known host of this fly, and compare catches of wild males to tomato-based traps and cue-lure traps in the field. Bactrocera tryoni males started to respond to tomato odor as they sexually matured (2 to 3 wk olds) and thereafter showed consistent olfactory response until advanced age (15 wk). In the field, wild males were captured by tomato-based traps throughout the year at a level not significantly different from cue-lure traps. The reason for the consistent B. tryoni male response to host fruit odor at this stage is not known, but it certainly occurs at a level greater than can be continued to be ignored for both basic and applied research.

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23

Zambetaki, Anna, Antigone Zacharopoulou, Zacharias G. Scouras, and Penelope Mavragani-Tsipidou. "The genome of the olive fruit fly Bactrocera oleae: localization of molecular markers by in situ hybridization to the salivary gland polytene chromosomes." Genome 42, no. 4 (August 1, 1999): 744–51. http://dx.doi.org/10.1139/g99-017.

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Nine specific DNA probes (genomic or cDNA) from Ceratitis capitata have been mapped by in situ hybridization to the salivary gland polytene chromosomes of the olive fruit fly Bactrocera oleae, a major agricultural pest, thus establishing molecular markers for the 5 autosomal chromosomes. Taking into account the present results, as well as previous data obtained mainly by in situ hybridizations, chromosomal homologies among B. oleae, C. capitata and B. tryoni are established. Data show extensive linkage group conservation among the 3 taxa of the economically important and globally distributed family, the Tephritidae.Key words: Bactrocera oleae, Tephritidae, salivary gland, polytene chromosomes, in situ hybridization, mapping.

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24

Gilchrist, A. Stuart, and Alison E. Ling. "DNA microsatellite analysis of naturally occurring colour intermediates between Bactrocera tryoni (Froggatt) and Bactrocera neohumeralis (Hardy) (Diptera: Tephritidae)." Australian Journal of Entomology 45, no. 2 (May 2006): 157–62. http://dx.doi.org/10.1111/j.1440-6055.2006.00522.x.

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25

WELDON, CHRISTOPHER W., and PHILLIP W. TAYLOR. "Desiccation resistance of adult Queensland fruit flies Bactrocera tryoni decreases with age." Physiological Entomology 35, no. 4 (November 15, 2010): 385–90. http://dx.doi.org/10.1111/j.1365-3032.2010.00744.x.

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26

COLLINS, SAMUEL R., and PHILLIP W. TAYLOR. "Fecundity, fertility and reproductive recovery of irradiated Queensland fruit fly Bactrocera tryoni." Physiological Entomology 36, no. 3 (June 20, 2011): 247–52. http://dx.doi.org/10.1111/j.1365-3032.2011.00790.x.

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27

Waddell, B. C., V. M. Jones, R. J. Petry, F. Sales, D. Paulaud, J. H. Maindonald, and W. G. Laidlaw. "Thermal conditioning in Bactrocera tryoni eggs (Diptera: Tephritidae) following hot-water immersion." Postharvest Biology and Technology 21, no. 1 (December 2000): 113–28. http://dx.doi.org/10.1016/s0925-5214(00)00170-8.

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28

Fanson, Benjamin G., Ingrid E. Petterson, and Phillip W. Taylor. "Diet quality mediates activity patterns in adult Queensland fruit fly (Bactrocera tryoni)." Journal of Insect Physiology 59, no. 7 (July 2013): 676–81. http://dx.doi.org/10.1016/j.jinsphys.2013.04.005.

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29

Fanson, Benjamin G., Christopher W. Weldon, Diana Pérez-Staples, Stephen J. Simpson, and Phillip W. Taylor. "Nutrients, not caloric restriction, extend lifespan in Queensland fruit flies (Bactrocera tryoni)." Aging Cell 8, no. 5 (October 2009): 514–23. http://dx.doi.org/10.1111/j.1474-9726.2009.00497.x.

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30

Moadeli, Tahereh, Phillip W. Taylor, and Fleur Ponton. "High productivity gel diets for rearing of Queensland fruit fly, Bactrocera tryoni." Journal of Pest Science 90, no. 2 (November 17, 2016): 507–20. http://dx.doi.org/10.1007/s10340-016-0813-0.

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31

Reynolds, Olivia L., Damian Collins, Bernard C. Dominiak, and Terry Osborne. "No Sting in the Tail for Sterile Bisex Queensland Fruit Fly (Bactrocera tryoni Froggatt) Release Programs." Insects 13, no. 3 (March 9, 2022): 269. http://dx.doi.org/10.3390/insects13030269.

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Global markets do not tolerate the presence of fruit fly (Tephritidae) in horticultural produce. A key method of control for tephritidae pests, is the sterile insect technique (SIT). Several countries release a bisex strain, i.e., males and females, however the sterile male is the only sex which contributes to wild population declines when released en masse. In commercial orchards, there are concerns that sterile females released as part of bisex strains, may oviposit, i.e., ‘sting’ and cause damage to fruit, rendering it unmarketable. Australia has released a bisex strain of sterile Queensland fruit fly, Bactrocera tryoni Froggatt, for several decades to suppress wild pest populations, particularly in peri-urban and urban environments. Here, we assessed fruit damage in two commercially grown stone fruit orchards where bisex sterile B. tryoni were released, and in an orchard that did not receive sterile flies. The number of detected stings were higher in only one SIT release orchard, compared with the control; however, there was no difference between SIT and control orchards in the number of larvae detected. We showed that there is no evidence that sterile female B. tryoni released in large numbers caused stings, or damage that led to downgraded or unsaleable fruit. The bisex strain of sterile B. tryoni is recommended for use in commercial stone-fruit orchards, under the conditions in which this trial was conducted.

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32

Reynolds, O. L., and B. A. Orchard. "Effect of adult chill treatments on recovery, longevity and flight ability of Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae)." Bulletin of Entomological Research 101, no. 1 (July 8, 2010): 63–71. http://dx.doi.org/10.1017/s0007485310000210.

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AbstractControl of Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), populations or outbreaks may be achieved through the mass-rearing and inundative release of sterile B. tryoni. An alternative release method is to release chilled adult sterile fruit flies to decrease packaging and transport requirements and potentially improve release efficiencies. Two trials were conducted to determine the effect of chilling on the performance of two separate batches of adult B. tryoni, fed either a protein and sucrose diet or sucrose only diet. The first trial compared chill times of 0, 0.5, 2 and 4 h; the second trial compared chill times of 0, 2, 4, 8 and 24 h. Overall, there was little or no affect of chilling on the recovery, longevity and flight ability of B. tryoni chilled at 4°C. Recovery time can take up to 15 min for chilled adult flies. There was no effect of chill time on longevity although females generally had greater longevity on either diet compared with males. Propensity for flight was not adversely affected by chilling at the lower chill times in trial 1; however, in trial 2, adults fed on a protein and sucrose diet had a decreased tendency for flight as the chilling time increased. Fly body size did not affect recovery times although the smaller adult B. tryoni in trial 1 had significantly reduced longevity compared to the larger adults in trial 2. Implications of these findings for B. tryoni SIT are discussed.

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33

Clarke, Anthony R., Peter Leach, and Penelope F. Measham. "The Fallacy of Year-Round Breeding in Polyphagous Tropical Fruit Flies (Diptera: Tephritidae): Evidence for a Seasonal Reproductive Arrestment in Bactrocera Species." Insects 13, no. 10 (September 28, 2022): 882. http://dx.doi.org/10.3390/insects13100882.

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The genus Bactrocera (Diptera: Tephritidae) is endemic to the monsoonal rainforests of South-east Asia and the western Pacific where the larvae breed in ripe, fleshy fruits. While most Bactrocera remain rainforest restricted, species such as Bactrocera dorsalis, Bactrocera zonata and Bactrocera tryoni are internationally significant pests of horticulture, being both highly invasive and highly polyphagous. Almost universally in the literature it is assumed that Bactrocera breed continuously if temperature and hosts are not limiting. However, despite that, these flies show distinct seasonality. If discussed, seasonality is generally attributed to the fruiting of a particular breeding host (almost invariably mango or guava), but the question appears not to have been asked why flies do not breed at other times of the year despite other hosts being available. Focusing initially on B. tryoni, for which more literature is available, we demonstrate that the seasonality exhibited by that species is closely correlated with the seasons of its endemic rainforest environment as recognised by traditional Aboriginal owners. Evidence suggests the presence of a seasonal reproductive arrest which helps the fly survive the first two-thirds of the dry season, when ripe fruits are scarce, followed by a rapid increase in breeding at the end of the dry season as humidity and the availability of ripe fruit increases. This seasonal phenology continues to be expressed in human-modified landscapes and, while suppressed, it also partially expresses in long-term cultures. We subsequently demonstrate that B. dorsalis, across both its endemic and invasive ranges, shows a very similar seasonality although reversed in the northern hemisphere. While high variability in the timing of B. dorsalis population peaks is exhibited across sites, a four-month period when flies are rare in traps (Dec–Mar) is highly consistent, as is the fact that nearly all sites only have one, generally very sharp, population peak per year. While literature to support or deny a reproductive arrest in B. dorsalis is not available, available data is clear that continuous breeding does not occur in this species and that there are seasonal differences in reproductive investment. Throughout the paper we reinforce the point that our argument for a complex reproductive physiology in Bactrocera is based on inductive reasoning and requires specific, hypothesis-testing experiments to confirm or deny, but we do believe there is ample evidence to prioritise such research. If it is found that species in the genus undergo a true reproductive diapause then there are very significant implications for within-field management, market access, and biosecurity risk planning which are discussed. Arguably the most important of these is that insects in diapause have greater stress resistance and cold tolerance, which could explain how tropical Bactrocera species have managed to successfully invade cool temperate regions.

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34

Reynolds, O. L., B. A. Orchard, S. R. Collins, and P. W. Taylor. "Yeast hydrolysate supplementation increases field abundance and persistence of sexually mature sterile Queensland fruit fly, Bactrocera tryoni (Froggatt)." Bulletin of Entomological Research 104, no. 2 (January 23, 2014): 251–61. http://dx.doi.org/10.1017/s0007485313000758.

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AbstractThe sterile insect technique (SIT) is a non-chemical approach used to control major pests from several insect families, including Tephritidae, and entails the mass-release of sterile insects that reduce fertility of wild populations. For SIT to succeed, released sterile males must mature and compete with wild males to mate with wild females. To reach sexual maturity, the Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), must obtain adequate nutrition after adult emergence; however, in current SIT programs sterile B. tryoni receive a pre-release diet that lacks key nutrients required to sustain sexual development. The chief objective of this study was to determine whether pre-release yeast hydrolysate (YH) supplements affect the persistence and abundance of sexually mature sterile male B. tryoni under field conditions. Experiments were run in outdoor cages under conditions of low and high environmental stress that differed markedly in temperature and humidity, and in the field. Under low environmental stress conditions, survival of sterile B. tryoni was monitored in cages under three diet treatments: (i) sugar only, (ii) sugar plus YH or (iii) sugar plus YH for 48 h and sugar only thereafter. Under high environmental stress conditions survival of sterile B. tryoni was monitored in cages under four diet treatments: (i) white sugar only, (ii) brown sugar only, (iii) white sugar plus YH and (iv) brown sugar plus YH. In a replicated field study, we released colour-marked sterile B. tryoni from two diet regimes, YH-supplemented or YH-deprived, and monitored abundance of sexually mature males. In the low-stress cage study, there was no effect of diet, although overall females lived longer than males. In the high stress cage study, mortality was lower for YH-fed flies than YH-deprived flies and females lived longer than males. In the field, YH supplementation resulted in higher abundance of sexually mature sterile males, with 1.2 YH-fed flies trapped for every YH-deprived fly trapped. Under field conditions, YH supplementation can increase over-flooding ratios and hence may improve the effectiveness of SIT programmes.

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35

Royer, Jane E., Keng Hong Tan, and David G. Mayer. "Comparative Trap Catches of Male Bactrocera, Dacus, and Zeugodacus Fruit Flies (Diptera: Tephritidae) With Four Floral Phenylbutanoid Lures (Anisyl Acetone, Cue-Lure, Raspberry Ketone, and Zingerone) in Queensland, Australia." Environmental Entomology 49, no. 4 (June 9, 2020): 815–22. http://dx.doi.org/10.1093/ee/nvaa056.

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Abstract The male fruit fly attractants, cue-lure (CL) and raspberry ketone (RK), are important in pest management. These volatile phenylbutanoids occur in daciniphilous Bulbophyllum Thouar (Orchidaceae: Asparagales) orchids, along with zingerone (ZN) and anisyl acetone (AA). While these four compounds attract a similar range of species, their relative attractiveness to multiple species is unknown. We field tested these compounds in two fruit fly speciose locations in north Queensland, Australia (Lockhart and Cairns) for 8 wk. Of 16 species trapped in significant numbers, 14 were trapped with CL and RK, all in significantly greater numbers with CL traps than RK traps (at least in higher population locations). This included the pest species Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) (CL catches ca. 5× > RK), Bactrocera neohumeralis (Hardy) (Diptera: Tephritidae) and Bactrocera bryoniae (Tryon) (Diptera: Tephritidae) (CL catches ca. 3× > RK), and Bactrocera frauenfeldi (Schiner) (Diptera: Tephritidae) (in Cairns—CL catches ca. 1.6× > RK). Seven species were trapped with AA, and all were also caught in CL and RK traps in significantly greater numbers, with the exception of B. frauenfeldi. For this species, catches were not statistically different with CL, RK, and AA in Lockhart, and RK and AA in Cairns. Seven species were trapped with ZN, two at this lure only, and the remainder also with CL or RK but in significantly greater numbers. This is the first quantitative comparison of the relative attractiveness of CL, RK, AA, and ZN against multiple species, and supports the long-held but untested assumption that CL is broadly more attractive lure than RK.

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36

KINNEAR, M. W., H. S. BARIANA, J. A. SVED, and M. FROMMER. "Polymorphic microsatellite markers for population analysis of a tephritid pest species, Bactrocera tryoni." Molecular Ecology 7, no. 11 (November 1998): 1489–95. http://dx.doi.org/10.1046/j.1365-294x.1998.00480.x.

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Collins, S. R., C. W. Weldon, C. Banos, and P. W. Taylor. "Optimizing Irradiation Dose for Sterility Induction and Quality of Bactrocera tryoni." Journal of Economic Entomology 102, no. 5 (October 1, 2009): 1791–800. http://dx.doi.org/10.1603/029.102.0509.

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38

Nguyen, V. L., A. Meats, G. A. C. Beattie, R. Spooner-Hart, Z. M. Liu, and L. Jiang. "Behavioural responses of female Queensland fruit fly, Bactrocera tryoni, to mineral oil deposits." Entomologia Experimentalis et Applicata 122, no. 3 (March 2007): 215–21. http://dx.doi.org/10.1111/j.1570-7458.2006.00504.x.

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39

Moadeli, T., B. Mainali, F. Ponton, and P. W. Taylor. "Evaluation of yeasts in gel larval diet for Queensland fruit fly, Bactrocera tryoni." Journal of Applied Entomology 142, no. 7 (June 2, 2018): 679–88. http://dx.doi.org/10.1111/jen.12520.

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40

Langford, Eliza A., Uffe N. Nielsen, Scott N. Johnson, and Markus Riegler. "Susceptibility of Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), to entomopathogenic nematodes." Biological Control 69 (February 2014): 34–39. http://dx.doi.org/10.1016/j.biocontrol.2013.10.009.

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41

Jessup, A. J., R. F. Sloggett, and N. M. Quinn. "Quarantine Disinfestation of Blueberries Against Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) by Cold Storage." Journal of Economic Entomology 91, no. 4 (August 1, 1998): 964–67. http://dx.doi.org/10.1093/jee/91.4.964.

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42

Heather, N. W., P. M. Peterson, and R. A. Kopittke. "Quarantine disinfestation of capsicums against Queensland fruit fly (Diptera : Tephritidae) with dimethoate." Australian Journal of Experimental Agriculture 39, no. 7 (1999): 897. http://dx.doi.org/10.1071/ea97149.

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Summary. A postharvest dimethoate treatment at 400 mg/L applied through a packing-line spray system achieved >99.99% efficacy as a quarantine disinfestation method against Queensland fruit fly, Bactrocera tryoni (Froggatt) infesting capsicums (peppers), Capsicum annuum L. There were no survivors in confirmatory tests on fruit containing 77 130 eggs, the most tolerant life stage. The spray system thoroughly wetted fruit at a delivery rate of 9.2 L/min.m2 for a minimum time of 1 min.

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43

Heather, N. W., R. A. Kopittke, and E. A. Pike. "A heated air quarantine disinfestation treatment against Queensland fruit fly (Diptera: Tephritidae) for tomatoes." Australian Journal of Experimental Agriculture 42, no. 8 (2002): 1125. http://dx.doi.org/10.1071/ea01022.

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A circulated heated-air treatment at 92% RH to achieve and maintain a minimum fruit core temperature of 44°C for 2 h is shown to disinfest tomatoes against Queensland fruit fly, Bactrocera tryoni (Froggatt) for market access quarantine purposes. The efficacy of the treatment exceeded 99.99%, tested at the 95% confidence level. An estimated 78 439 eggs were used for large-scale trials, as the stage of the pest most tolerant of heat at the treatment temperature.

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Cruz, Carlos, Alison Tayler, and Steve Whyard. "RNA Interference-Mediated Knockdown of Male Fertility Genes in the Queensland Fruit Fly Bactrocera tryoni (Diptera: Tephritidae)." Insects 9, no. 3 (August 10, 2018): 96. http://dx.doi.org/10.3390/insects9030096.

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The Queensland fruit fly, Bactrocera tryoni, is Australia’s most important horticultural pest. The Sterile Insect Technique (SIT) has been used to control this species for decades, using radiation to sterilize males before field-release. This method of sterilization can potentially reduce the insects’ abilities to compete for mates. In this study, RNA interference (RNAi) techniques were examined for their potential to sterilize male B. tryoni without adversely affecting mating competitiveness. B. tryoni adults were injected or fed double-stranded RNAs (dsRNAs) targeting spermatogenesis genes (tssk1, topi and trxt); quantitative reverse-transcriptase PCR analyses confirmed that transcript levels were reduced 60–80% for all three genes following injections. Feeding produced a significant gene knockdown for tssk1 and trxt after three days, but interestingly, two genes (trxt and topi) produced an excess of transcripts after 10 days of feeding. Despite these fluctuations in transcript levels, all three dsRNAs impacted the fecundity of treated males, with tssk1- and topi-dsRNA-treated males producing 75% fewer viable offspring than the negative controls. Mating competition assays demonstrated that dsRNA-treated males can actively compete with untreated males. These findings suggest that RNAi technology could serve as an alternative to radiation as a means of sterilizing these insects in an SIT program.

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Weldon, Christopher W. "Influence of male aggregation size on female visitation in Bactrocera tryoni (Froggatt) (Diptera: Tephritidae)." Australian Journal of Entomology 46, no. 1 (February 2007): 29–34. http://dx.doi.org/10.1111/j.1440-6055.2007.00587.x.

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Dominiak, Bernard C. "Review of Dispersal, Survival, and Establishment of Bactrocera tryoni (Diptera: Tephritidae) for Quarantine Purposes." Annals of the Entomological Society of America 105, no. 3 (May 1, 2012): 434–46. http://dx.doi.org/10.1603/an11153.

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Choo, A., P. Crisp, R. Saint, L. V. O'Keefe, and S. W. Baxter. "CRISPR/Cas9-mediated mutagenesis of the white gene in the tephritid pest Bactrocera tryoni." Journal of Applied Entomology 142, no. 1-2 (June 1, 2017): 52–58. http://dx.doi.org/10.1111/jen.12411.

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Hull, Craig D., and Bronwen W. Cribb. "Ultrastructure of the antennal sensilla of Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae)." International Journal of Insect Morphology and Embryology 26, no. 1 (January 1997): 27–34. http://dx.doi.org/10.1016/s0020-7322(97)00005-6.

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Dominiak, B. C., A. E. Westcott, and I. M. Barchia. "Release of sterile Queensland fruit fly, Bactrocera tryoni (Froggatt) (Diptera: Tephritidae), at Sydney, Australia." Australian Journal of Experimental Agriculture 43, no. 5 (2003): 519. http://dx.doi.org/10.1071/ea01146.

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Four releases of sterile Queensland fruit flies were used in Sydney to assess their flight and distribution characteristics. Flies were detected within 400 m of the release site but did not reach the 5 km trapping array. The distribution was more pronounced towards the north-east and it may have been linked with strong wind prevailing in that direction. CLIMEX was used to indicate that the distribution was not limited by adverse weather. The distribution tended to agree with the formula predicted by Meats (1998). Flies marked with orange dye resulted in the highest recapture rate compared with pink, green and blue dyes. The possible reduction in quarantine radius, following a declared outbreak, is discussed.

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Kumaran, Nagalingam, Chloé A. van der Burg, Yujia Qin, Stephen L. Cameron, Anthony R. Clarke, and Peter J. Prentis. "Plant-Mediated Female Transcriptomic Changes Post-Mating in a Tephritid Fruit Fly, Bactrocera tryoni." Genome Biology and Evolution 10, no. 1 (December 6, 2017): 94–107. http://dx.doi.org/10.1093/gbe/evx257.

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