Population Fluctuation of Bactrocera zonata and Bactrocera dorsalis in Guava Orchard Agro-Ecosystem in Sindh Region

Abro, Zain-ul-Aabdin; Baloch, Naheed; Memon, Raza Muhammad; Khuhro, Niaz Hussain

doi:10.17582/journal.pjz/20191012081034

Cited by 7 publications

(6 citation statements)

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“…The results of the present study strongly affirm the results of Hasnain et al [9], who concluded that traps should be hung at a height of 5 feet above the ground to get the maximum catch of oriental fruit flies, and that traps placed at ground level obtained the minimum catch of the pests. Moreover, Marwat et al [17] stated that pheromone traps hung at 5 feet above the ground trapped a higher number of fruit flies which was confirmed by the present results. The present study also supports with the study of El-Gendy [18], who revealed that the optimal trap height for hanging pheromone-baited traps in mango orchards was 5 feet above the ground.…”

Section: Effects Of Trap Height On the Population Catch Of Oriental F...supporting

confidence: 89%

Effects of Trap Height on the Capture of Bactrocera spp. (Diptera: Tephritidae) in Mango Orchard of Tagum City, Davao del Norte, Philippines

Amparo Bausin,

Fritze Sibay Sampiano,

Sarnillo Bayang

et al. 2024

Curr. Appl. Sci. Technol.

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Fruit flies are one of the major pests infesting varieties of economically important fruits worldwide. This pest represents one of the most damaging groups of polyphagous flies. One of the alternatives for the control of the fruit fly that attacks mangoes is the use of pheromone-baited traps. The effectiveness of the pheromone traps depends on several factors such as field conditions, trap location, and environmental conditions. Therefore, this study evaluated the effect of different trap heights (1, 2, 3, 4, 5, 6, and 7 feet above the ground) on fruit fly trapping with traps baited with methyl eugenol. The trap installed at 5 feet above the ground had the highest number (p<0.05) of captured fruit flies compared to other heights evaluated. These results imply that for the effective monitoring and management of fruit flies, pheromone baited traps must be placed 5 feet from the ground level. The results further revealed that weather parameters did not appear to have a significant correlation (p<0.05) with the average population count of the pest. Because of the importance and usefulness of the findings of this study, further research that integrates this technology with other pest management tactics against the tephritid flies infesting mango at farmers’ level is recommended. Optimizing this technology may offer a cost-effective and practical pest management approach for small hold mango farmers.

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Section: Effects Of Trap Height On the Population Catch Of Oriental F...supporting

confidence: 89%

Effects of Trap Height on the Capture of Bactrocera spp. (Diptera: Tephritidae) in Mango Orchard of Tagum City, Davao del Norte, Philippines

Amparo Bausin,

Fritze Sibay Sampiano,

Sarnillo Bayang

et al. 2024

Curr. Appl. Sci. Technol.

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“…Our results are in agreement with those by (Vargas et al, 2002) who conducted surveys on comparative demography of six parasitoids species. The maximum infestation of B. zonata were recorded in guava, likewise (Abro et al, 2021)…”

Section: Resultsmentioning

confidence: 84%

Population Survey of Natural Enemies of Bactrocera Flies from Mango and Guava Septic Fruits of Sindh Region

Abro¹,

Baloch²,

Memon³

et al. 2022

JIS

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“…Variance data from the original sources is not included, and where data had to be read from graphs exact values are not guaranteed. Sources [ 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 ]; these sources were selected simply for the ease by which their data could be read.…”

Section: Figurementioning

confidence: 99%

The Fallacy of Year-Round Breeding in Polyphagous Tropical Fruit Flies (Diptera: Tephritidae): Evidence for a Seasonal Reproductive Arrestment in Bactrocera Species

Clarke

Measham²

2022

Insects

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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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Population Fluctuation of Bactrocera zonata and Bactrocera dorsalis in Guava Orchard Agro-Ecosystem in Sindh Region

Cited by 7 publications

References 0 publications

Effects of Trap Height on the Capture of Bactrocera spp. (Diptera: Tephritidae) in Mango Orchard of Tagum City, Davao del Norte, Philippines

Effects of Trap Height on the Capture of Bactrocera spp. (Diptera: Tephritidae) in Mango Orchard of Tagum City, Davao del Norte, Philippines

Population Survey of Natural Enemies of Bactrocera Flies from Mango and Guava Septic Fruits of Sindh Region

The Fallacy of Year-Round Breeding in Polyphagous Tropical Fruit Flies (Diptera: Tephritidae): Evidence for a Seasonal Reproductive Arrestment in Bactrocera Species

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