Polyandry in the Fruit Fly Bactrocera dorsalis Hendel (Diptera: Tephritidae)

The Oriental fruit fly, Bactrocera dorsalis (Hendel) is a global pest of a wide variety fruits. Due to its importance, the sterile insect technique (SIT) has raised attention as a safe and sustainable solution to this pest. Successful SIT programs require a comprehensive understanding on the mating behavior of this species. Females of oriental fruit flies are known monandrous which implies that females only mate once with one male. This experiment aimed to confirm that female flies were able to mate more than once with the same (multiple mating) or different males (polyandry) in certain period of time. Four different experiments were conducted to test the hypothesis: receptivity a female to the same male (1) and different males (2) in a cage for 11 days; receptivity a mated female with the same male (3) and different males (4) in a cage for 14 days after the first mating. Results indicated that a part of the female oriental fruit flies was capable to mating more than once with the same or different males.

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Effect of Irradiating Puparia of Oriental Fruit Fly (Diptera: Tephritidae) on Adult Survival and Fecundity for Sterile Insect Technique and Quarantine Purposes

Journal of Economic Entomology ◽

10.1093/jee/toz217 ◽

2019 ◽

Vol 112 (6) ◽

pp. 2808-2816 ◽

Cited By ~ 1

Author(s):

Suhana Yusof ◽

Ahmad Zainuri Mohamad Dzomir ◽

Salmah Yaakop

Keyword(s):

Sex Ratio ◽

Sterile Insect Technique ◽

Adult Emergence ◽

Fruit Fly ◽

Bactrocera Dorsalis ◽

Adult Survival ◽

Adult Longevity ◽

Oriental Fruit Fly ◽

New Findings ◽

Morphological Differences

Abstract The aim of this study was to investigate the effect of gamma irradiation on survivability (adult emergence, sex ratio, adult longevity), fecundity (eggs hatchability, number of eggs produced), and morphological differences in the size of the ovary and testes of unirradiated and irradiated adults of Oriental fruit fly [Bactrocera dorsalis (Hendel)]. A dose of 100 Gy was determined as the minimum needed for inhibitory effects against B. dorsalis that would not deter adult emergence, sex ratio (male:female), and adult longevity, with 82.6 ±7.02, 1:1.09, and 107 ± 24.5, respectively. Doses from 50 to 400 Gy range did not completely prevent the adult emergence; however, the emergence decreased by increasing the radiation dose. Adult survivability significantly decreased among all the treatment groups of B. dorsalis, except for the 50 Gy and unirradiated flies. At a dose of 50 Gy, fertile females showed a significant reduction in fecundity by not producing eggs after mating with the sterile males. Meanwhile, the number of eggs laid decreased with increasing dose and no fertile egg was hatched starting at 100 Gy of irradiation. Testes and ovaries of 20-d old flies irradiated as pupae were smaller than those of control flies. In this study, 100 Gy was concluded as the minimum effective dose for the disinfestation and sterilization of B. dorsalis puparia. Results represent new findings used as a basis for sterile insect technique and quarantine programs for managing B. dorsalis, particularly in Malaysia.

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Optimization of sterile male ratio of oriental fruit fly, Bactrocera dorsalis (HENDEL)

SAARC Journal of Agriculture ◽

10.3329/sja.v13i2.26568 ◽

2016 ◽

Vol 13 (2) ◽

pp. 50-60 ◽

Cited By ~ 1

Author(s):

A Zahan ◽

MA Latif ◽

MA Hossain ◽

SA Khan ◽

MJ Rahman

Keyword(s):

Sterile Insect Technique ◽

Wild Population ◽

Fruit Fly ◽

Fixed Number ◽

Field Application ◽

Bactrocera Dorsalis ◽

Sterile Male ◽

Oriental Fruit Fly ◽

Male Ratio ◽

Dose Radiation

The study was conducted to establish the Sterile Insect Technique (SIT) method of controlling oriental fruit fly, Bactrocera dorsalis (Hendel). The sterile male ratio of oriental fruit fly was optimized for possible field application of Sterile Insect Technique. Several batches of 5 and 6-dayold pupae were irradiated at 30, 40, 50 and 60 Gray (Gy) to optimize the radiation dose of sterilization. Highest pupal duration and abnormal adults were found after imposing gamma radiation in 5-day-old pupae treated with 60 Gy dose. Radiation significantly increased the nonemergence percentage and decreased the normal emergence of oriental fruit fly. The sterilizing doses were recorded as 60 Gy for 5-dayold pupae. Fixed number of virgin females of oriental fruit flies were allowed to mate with unirradiated and irradiated males at 1:1, 1:2, 1:5 and 1:9 ratios in different cages to find out the rate of suppression against wild population. Minimum pupal recovery and percent normal emergence observed at 1:9 ratio. Deformed and undeveloped (not emerged) population increased with the ratio of irradiated males. The 1:9 ratio was found as the best for suppression of wild population of B. dorsalis.SAARC J. Agri., 13(2): 50-60 (2015)

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Natural Field Infestation of Mangifera casturi and Mangifera lalijiwa by Oriental Fruit Fly, Bactrocera dorsalis (Diptera: Tephritidae)

International Journal of Insect Science ◽

10.1177/1179543317717735 ◽

2017 ◽

Vol 9 ◽

pp. 117954331771773

Author(s):

Grant T McQuate ◽

Charmaine D Sylva ◽

Nicanor J Liquido

Keyword(s):

Mangifera Indica ◽

Fruit Fly ◽

Fruit Flies ◽

Bactrocera Dorsalis ◽

Oriental Fruit Fly ◽

Limited Data ◽

Breeding Programs ◽

Natural Field ◽

Tephritid Fruit Flies

Mango, Mangifera indica (Anacardiaceae), is a crop cultivated pantropically. There are, however, many other Mangifera spp (“mango relatives”) which have much more restricted distributions and are poorly known but have potential to produce mango-like fruits in areas where mangoes do not grow well or could be tapped in mango breeding programs. Because of the restricted distribution of many of the Mangifera spp, there has also been limited data collected on susceptibility of their fruits to infestation by tephritid fruit flies which is important to know for concerns both for quality of production and for quarantine security of fruit exports. Here, we report on natural field infestation by the oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritidae), of two mango relatives native to Indonesia: Mangifera casturi and Mangifera lalijiwa. Rates of infestation of fruits of these two Mangifera spp by tephritid fruit flies have not previously been reported.

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Neuropeptides and their potential physiological functions in the oriental fruit fly,Bactrocera dorsalis(Hendel)

10.1603/ice.2016.105656 ◽

2016 ◽

Author(s):

Hongbo Jiang

Keyword(s):

Fruit Fly ◽

Bactrocera Dorsalis ◽

Oriental Fruit Fly ◽

Physiological Functions

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Toxicity measurement of spinosad and phloxine B on oriental fruit fly Bactrocera dorsalis

JOURNAL OF HUNAN AGRICULTURAL UNIVERSITY ◽

10.3724/sp.j.1238.2010.00547 ◽

2011 ◽

Vol 36 (5) ◽

pp. 547-549

Author(s):

Ying-gang DU ◽

Hai-bo XIA ◽

Jia-hua CHEN ◽

Qing-e JI

Keyword(s):

Fruit Fly ◽

Bactrocera Dorsalis ◽

Oriental Fruit Fly

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Host Suitability Index for Polyphagous Tephritid Fruit Flies

Journal of Economic Entomology ◽

10.1093/jee/toab035 ◽

2021 ◽

Author(s):

Peter A Follett ◽

Fay E M Haynes ◽

Bernard C Dominiak

Keyword(s):

Fruit Fly ◽

Fruit Production ◽

General Purpose ◽

Fruit Flies ◽

Host Suitability ◽

Bactrocera Dorsalis ◽

Infestation Rate ◽

Suitability Index ◽

Host Status ◽

Tephritid Fruit Flies

Abstract Tephritid fruit flies are major economic pests for fruit production and are an impediment to international trade. Different host fruits are known to vary in their suitability for fruit flies to complete their life cycle. Currently, international regulatory standards that define the likely legal host status for tephritid fruit flies categorize fruits as a natural host, a conditional host, or a nonhost. For those fruits that are natural or conditional hosts, infestation rate can vary as a spectrum ranging from highly attractive fruits supporting large numbers of fruit flies to very poor hosts supporting low numbers. Here, we propose a Host Suitability Index (HSI), which divides the host status of natural and conditional hosts into five categories based on the log infestation rate (number of flies per kilogram of fruit) ranging from very poor (<0.1), poor (0.1–1.0), moderately good (1.0–10.0), good (10–100), and very good (>100). Infestation rates may be determined by field sampling or cage infestation studies. We illustrate the concept of this index using 21 papers that examine the host status of fruits in five species of polyphagous fruit flies in the Pacific region: Bactrocera tryoni Froggatt, Bactrocera dorsalis (Hendel), Bactrocera latifrons (Hendel), Zeugodacus cucurbitae (Coquillett), and Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). This general-purpose index may be useful in developing systems approaches that rely on poor host status, for determining surveillance and detection protocols for potential incursions, and to guide the appropriate regulatory response during fruit fly outbreaks.

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Non-host status of papaya cultivars to the oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritidae), in relation to the degree of fruit ripeness

International Journal of Tropical Insect Science ◽

10.1017/s1742758416000242 ◽

2016 ◽

Vol 37 (01) ◽

pp. 19-29 ◽

Cited By ~ 2

Author(s):

Domingos Cugala ◽

João Jone Jordane ◽

Sunday Ekesi

Keyword(s):

Fruit Ripening ◽

Market Access ◽

Fruit Fly ◽

Fruit Flies ◽

Bactrocera Dorsalis ◽

Laboratory Evaluation ◽

Ripening Stage ◽

Field Cage ◽

Major Barrier ◽

Ripening Stages

AbstractPhytosanitary measures are a major barrier to trade in papaya. We assessed the infestation of tephritid fruit flies on different stages of maturity of papaya, to determine its non-host stage of maturity, for market access. Papaya fruits were collected from Kilifi and Embu counties, Kenya from March 2013 to December 2014, to assess the level of infestation by fruit flies according to the degree of fruit ripening. In all locations, no fruit fly infestation was recorded on papaya when fruits were at the 0, 25 and 50% yellow fruit ripening stage.Bactrocera dorsalis(Hendel) was, however, observed attacking fruits when papaya fruits were at 75 and 100% all yellow (fully ripe fruit ripening stage) with infestations of 0.19−0.51B. dorsalis/kg fruit and 0.24−1.24B. dorsalis/kg fruit, respectively, in all locations. Field cage exposure ofB. dorsalisto fruits of five papaya cultivars—‘Papino’, ‘Neo Essence’, ‘Sunrise Solo’, ‘Tainung No. 1’ and ‘Tainung No. 2’ in Manica Province, Mozambique—showed thatB. dorsalisdid not infest fruits at 0, 25 and 50% yellow ripening stages at the densities of 50 and 100 flies per cage. However, at 75% yellow ripening stage, up to 13.1 pupae/kg of fruits was recorded at a density of 150 flies per cage in Tainung No. 1, and infestation ranged from 4.5 to 136 pupae/kg fruits at 100% yellow ripening stage across all the cultivars and infestation densities. Laboratory evaluation of volatiles emanating from freshly crushed papaya pulp of four cultivars: ‘Sunrise Solo’, ‘Red Lady’, ‘Papayi’ and ‘Apoyo’ on egg viability ofB. dorsalisshowed that at 0, 25 and 50% yellow, egg hatchability was inhibited, suggesting that semiochemical compounds present in green tissues of papaya prevent egg development, although this effect was variable across the four cultivars and ripening stages. Export papaya is harvested at less than 40% yellow ripening stage. Our results, therefore, suggest that quarantine treatment for fruits at this ripening stage is inconsequential, asB. dorsalisdoes not infest papaya fruits at this stage; thus, authorities should permit entry of these papaya cultivars of less than 40% yellow ripening stage to quarantine-sensitive markets.

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