Academic literature on the topic 'Fruit fly'

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Journal articles on the topic "Fruit fly"

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Moneruzzaman Khandaker, Mohammad, Siti Zuriani Ismail, Nurul Hafiza, Nashriyah Mat, and Norhayati Ngah. "Effects of Hydrogen Peroxide and Methyl Eugenol on Fruit Growth, Yield and Fruit Fly Infestation of Syzygium Samarangense." International Journal of Engineering & Technology 7, no. 4.43 (December 29, 2018): 54–58. http://dx.doi.org/10.14419/ijet.v7i4.43.25819.

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A study was conducted to investigate the effects of hydrogen peroxide (H2O2) and methyl eugenol (ME) on fruit growth, yield and fruit fly infestation of wax apple (Syzygium samarangense var Jambu madu). The selected experimental tree branches were either left untreated or sprayed with 20 mM H2O2, 20 mM H2O2 plus ME or ME alone under field condition. The results showed that combine treatment of H2O2 and ME increased the net photosynthetic rate, CO2 assimilation, stomatal conductance and internal CO2 concentration of wax apple leaves. In addition, fruit weight, fruit firmness and TSS content of wax apple fruits significantly improved with H2O2 and ME treatment. The application of Methyl eugenol alone or combined with H2O2 reduced the number of fruit fly in wax apple fruits. There was positive correlation between fruit fly infestation and fruit size and between fruit fly infestation and fruit sweetness (TSS content) in H2O2 and Methyl eugenol treated fruits. Besides, we recorded negative correlation between the fruit fly infestation and firmness of treated wax apple fruits. It was concluded that application of hydrogen peroxide and methyl eugenol stimulated fruit growth and reduced the fruit fly infestation on wax apple under field condition. Â
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Gede Swibawa, I., F. X. Susilo, Indra Murti, and Esti Ristiyani. "SERANGAN DACUS CUCURBITAE ( DIPTERA: TRYPETIDAE) PADA BUAH MENTIMUN DAN PARE YANG DIBUNGKUS PADA SAAT PENTIL." Jurnal Hama dan Penyakit Tumbuhan Tropika 3, no. 2 (September 3, 2003): 43–46. http://dx.doi.org/10.23960/j.hptt.2343-46.

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Dacus cucurbitae ( Diptera: Trypetidae) attacks on cucumber and peria fruits wrapped at cherelle stage. The fruit flies were important pests of cucumber (Cucumis sativus L) and peria (Memordica charantia L.). The flies attacked fruits by laying egg on the fruit surface and their developing immatures caused serious damages from the inside. The objective of this experiment was to determine the effect of the fruit wrapping at cherelle stage on fruit fly infestation on cucumber or peria fruits. The experiment was conducted in villages of Terbanggi Besar (Central Lampung) and Jati Agung (South Lampung) during October—November 2001. A set of cherelle stage fruits, i.e. those just shed off their florescence, were wrapped using plastic bags while another set of adjacent fruits were left unwrapped. Fruits (treated or untreated) were taken soon after they fell off or at their normal harvest time, whichever came first, then were weighed and incubated in the laboratory to observe the fruit fly emergence. The results showed that fruit wrapping significantly reduced the fruit fly infestation and suppressed the fruit fly population on cucumber or peria fruits. The wrapped fruits weighed more than unwrapped fruits
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Zentani, Eman A. "Identification and description of Fruit fly species associated with different hosts in some Tripoli Fruit Orchards." Journal of Misurata University for Agricultural Sciences, no. 01 (October 6, 2019): 338–53. http://dx.doi.org/10.36602/jmuas.2019.v01.01.27.

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The present field study was carried out to identify fruit fly species in Tripoli fruit orchards during 2016 – 2017 seasons by using fruit rearing method. Five hosts were examined in this study namely Guava Psidium guajava L. , Pear Pyrus communis، , Plum Prunus cerasifera, pomegranate Punica granatum and Peach Prunus persica The results revealed that three species of fruit flies that belong to family Tephritidae were identified; the Peach fruit fly, Bactrocera zontana (Saunders) and the Mediterranean fruit fly Ceratitis capitata (Wiedemaan), which were found in all fruit trees examined, and Bactrocera sp.that was recorded for the first time on Guava in the area. The fourth fruit fly species recorded was the African fig fly, Zaprionus indianus (Gupta) in pomegranate and Guava fruits.
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Pangihutan, Josua Crystovel, Danar Dono, and Yusup Hidayat. "The potency of minerals to reduce oriental fruit fly infestation in chili fruits." PeerJ 10 (April 14, 2022): e13198. http://dx.doi.org/10.7717/peerj.13198.

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Introductions In many areas, particularly in Asia, the oriental fruit fly Bactrocera dorsalis (Hendel) causes considerable fruit damage on various plants. The fruit fly causes significant economic losses every year due to reduced fruit quantity and quality as well as export restrictions. This study aimed to examine the potency of minerals in controlling the oriental fruit fly infestation in chili fruits. Methods Experiments were conducted under laboratory and semi-field conditions using randomized block design. Ten minerals (i.e. kaolin, talc, zinc oxide, bentonite, sulfur, dolomite, calcium oxide, calcium hydroxide, calcium carbonate, and zeolite) and an untreated control were tested under laboratory conditions. Twenty chili fruits at a green stage were soaked in each mineral suspension (2%, w/v), air-dried, and placed in a trial cage (23-L plastic container) containing 20 female oriental fruit flies. In a semi-field bioassay using a screen cage (100 cm × 70 cm × 120 cm), 20 female oriental fruit flies were exposed to a fruit-bearing chili plant sprayed with mineral suspension. Results Talc and calcium oxide significantly reduced the numbers of visiting fruit flies, oviposition holes, and eggs laid, as well as the percentage of infested chili fruits in a laboratory bioassay. Calcium hydroxide was substantially better than talc in controlling fruit fly infestation in a semi-field bioassay, although it was not significantly different from calcium oxide and calcium carbonate. Conclusion Overall, calcium oxide is a viable option for the long-term control of the oriental fruit fly on chili fruits. Calcium oxide could be utilized as the push component of a push-pull strategy to manage oriental fruit fly infestation in chili fruits because of its potential to inhibit the number of visiting fruit flies and oviposition.
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Rawat, M., R. Kumar, V. P. Singh, S. Chand, S. Uniyal, N. Singh, O. Singh, and M. Kumar. "Effect of pre-harvest fruit bagging on post-harvest quality of rainy season guava cv. Allahabad Safeda." Journal of Environmental Biology 46, no. 2 (February 27, 2025): 299–307. https://doi.org/10.22438/jeb/46/2/mrn-5356.

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Aim: Guava crop is severely infested during rainy season by fruit fly that results in low quality fruits and lower yield. In view of this, a study was conducted to reduce the fruit fly infestation through bagging technique by using biodegradable bags. Methodology: The present investigation was carried out at G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand. Four-years-old plants of guava cv. Allahabad Safeda were selected for the experiment, and the fruits were bagged with different colour non-woven and perforated polyethylene bags. Results: Pink colour non-woven bag reduced the time taken for maturity and improved the quality of fruits. Fruit fly infestation was eradicated by fruit bagging and also reduces bird damage. Total soluble solids, pectin content, ascorbic acid, titratable acidity and sugars were found maximum in pink non-woven bagged fruits. Principle Component Analysis (PCA) was also carried out for twelve quality parameters, out of which, component 1 and component 2 showed Eigen value 8.77 and 1.69, respectively. PC1 and PC2 collectively explained 87.237% of total variation. Correlation analysis indicated positive and negative correlation among various quality attributes. Interpretation: This study provides a comprehensive information to reduce fruit fly infestation during rainy season through fruit bagging technique. Key words: Bagging technique, Fruit fly, Guava fruits
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Parajuli, Arpan, Ram Timilsina, Bibechana Paudel, Nabina Karki, Krishna Upadhya, Pitamber Basnet, and Debraj Adhikari. "Monitoring of fruit fly in mandarin orchards of Jajarkot, Nepal: A mixed-method approach." Fundamental and Applied Agriculture 8, no. 1 (2023): 447. http://dx.doi.org/10.5455/faa.142870.

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The study was conducted to access the species diversity of fruit fly and their population dynamics, awareness among mandarin growers on the nature of damage, and factors affecting the awareness in the Jajarkot district of Nepal in 2021. The study consists of two parts: farmer’s survey and monitoring of fruit flies. The farmer’s survey was carried out in randomly selected sixty households whose orchards were at least five years old in command areas of citrus zone, Jajarkot. Fruit fly monitoring was done in three mandarin orchards of Kushe Rural Municipality and Bheri Municipality using cue-lure, methyl eugenol, and great fruit fly bait. The survey revealed that only thirty percent of the farmers were aware of the nature of fruit fly damage. Experience in mandarin cultivation was found to be significantly affecting the awareness of mandarin growers on fruit fly damage. The mandarin growers were practicing pruning, collection and destruction of fallen fruits, use of chemicals, and traps for fruit fly management. Monitoring data revealed that there were four major fruit fly species. Among the lures used, cue-lure attracted more number of fruit flies, followed by methyl eugenol and great fruit fly bait. Cue-lure trap was effective in trapping Bactrocera nigrofemoralis, Zeugodacus tau, and Zeugodacus scutellaris whereas methyl eugenol was found effective in trapping Bactrocera dorsalis. Great fruit fly bait captured Bactrocera nigrofemoralis and Zeugodacus tau, but in lesser number. The number of all the species of fruit fly started increasing in April and reached the highest during May.
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Ningtyas, Sinta Sulvia, I. Wayan Susila, and I. Wayan Supartha. "Jenis dan Kelimpahan Relatif Lalat Buah Famili Lonchaeidae dan Tephritidae serta Parasitoidnya pada Cabai Rawit Putih (Capsicum frutescens L.) di Kabupaten Rembang, Provinsi Jawa Tengah, Indonesia." Agrotrop : Journal on Agriculture Science 13, no. 3 (November 29, 2023): 337. https://doi.org/10.24843/ajoas.2023.v13.i03.p02.

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Types and Relative Abundance of Fruit Flies of the Lonchaeidae and Tephritidae Families and Their Parasitoids on White Cayenne Pepper (Capsicum frutescens L.) in Rembang Regency, Central Java Province, Indonesia. Research on type and relative abundance of fruit flies Lonchaeidae and Tephritidae families and their parasitoids on white chili peppers (Capsicum frutescent L.) in Rembang Regency, Central Java Province, aims to determine the types of fruit flies in the families Lochaeidae (Bactrocera sp.) and Tephritidae (Silba sp.) and parasitoids, abundance, and parasitization rate of fruit fly parasitoids. This research used a purposive method by taking 50 fruits that had symptoms of fruit fly attacks at each location point for 3 repetitions in Kaliori, Sluke, Pamotan, Sedan, and Bulu Districts. The research was conducted from November 2021 to March 2022. The results showed that the fruit fly species was Silba adipata from the Lonchaeidae family and Bactrocera dorsalis from the Tephritidae family. The relative abundance of the fruit fly S. adipata (38.49%) was lower than that of the fruit fly B. dorsalis (61.51%). The fruit fly parasitoids of S. adipata are Asobara Japonica, Fopius arisanus and Diachasmimorpha longicaudata, and the fruit fly parasitoids of B. dorsalis are Fopius arisanus and Diachasmimorpha longicaudata. The average parasitization rate of the fruit fly parasitoid S. adipata was (27.13%) and B. dorsalis was (21.05%).
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Badii, Kongyeli Benjamin, Maxwell Kelvin Billah, Kwame Afreh-Nuamah, and Daniel Obeng-Ofori. "Farmers' Knowledge and Perceptions of Fruit Fly Pests and Their Management in Northern Ghana." Greener Journal of Agricultural Sciences 2, no. 8 (December 26, 2012): 412–23. https://doi.org/10.15580/GJAS.2012.8.110912244.

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Farmer-level knowledge is an important component of the action plan of the fruit fly committee of Ghana. A survey was conducted among 188 fruit growers in 20 districts in northern Ghana between February and May, 2012, to assess their knowledge, perceptions and practices (KPP) regarding fruit fly pests. Semi-structured questions designed in an open- and closed-ended fashion were used to assess farmers’ KPP about the pests. Majority (90 %) of the farmers were already aware of the fruit fly problem in the country with 55.3% perceiving it to be very serious. Majority (80.9%) of farmers however, demonstrated poor knowledge in identifying the fruit fly species of economic importance, especially the new African invader fruit fly, Bactrocera invadens. Farmers were more conversant with the economic impact of fruit flies than their direct damage symptoms on host fruits. A total of 39% growers took no action to control fruit flies in their farms. Recommended fruit fly control strategies such as pheromone trapping, bait application, soil inoculation and biological control were either unknown or inaccessible to growers. A total of (72%) applied chemicals that were not recommended for the control of fruit flies without considering their environmental and health risks. It is important to train fruit growers to improve their capabilities for fruit fly management through farmers’ field schools appropriate for helping them acquire basic knowledge of fruit fly pests and their control, and enable the most receptive farmers to reach a level of independent decision-makers.
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Sultana, MS, MAK Azad, and MS Islam. "Screening of Some Botanicals for Eco-friendly Control of Cucurbit Fruit Fly (Bactrocera cucurbitae) Infestation in Experimental Cucumber Field." Journal of Environmental Science and Natural Resources 13, no. 1-2 (July 6, 2022): 38–42. http://dx.doi.org/10.3329/jesnr.v13i1-2.60685.

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Cucurbit fruit fly (Bactrocera cucurbitae) is the major pest of Cucumber (Cucumis sativus L.), which severely damage the cucumber production. This study was carried to evaluate the efficacy of fourteen botanicals such as Chili (Capsicum frutescens), Garlic (Allium sativum), Onion (Allium cepa), Ginger (Zingiber officinale), Carrot leaves(Daucuscarota subsp. Sativus), Bitter gourd (Momordic acharantia), young Tomato (Solanum lycopersicum), Mahogany seed (Swietenia macrophylla), Eucalyptus leaves (Eucalyptus globulus), Black plum leaves (Syzygium cumini), Jackfruit leaves (Artocarpus heterophyllus), Neem leaves (Azadirachta indica), Black pepper (Piper nigrum) and Garden croton leaves (Codiaeum variegatum) to control the cucurbit fruit fly infestation in experimental cucumber (Green Rohini F1 Hybrid Cucumber) field during March 15, 2021– May 14, 2021. This study observed a less number of cucurbit fruit fly attack on cucumber fruits in Ginger treatment. In this treatment, only 7.06% fruits were infested by cucurbit fruit fly. The Ginger treatment reduced 14.17 times fruit fly infestation compare to control. However, a high number of cucurbit fruit fly infestations were found in Bitter gourd, young Tomato, Mahogany and Garden croton treatments. Cucurbit fruit fly infestation was low (12.50%) in Neem treatment. This treatment showed best performance on cucumber size (cm) and yield (gm). The lowest yield was found in Bitter gourd treatment. The Neem treatment kept about 3.54 times better performance in respect to cucumber yield than that of control treatment. Therefore, Neem leaves (Azadirachta indica) and Ginger (Zingiber officinale) extracts can be used as bio-pesticide for eco-friendly control of cucurbit fruit fly infestation in cucumber field.
 Environ. Sci. & Natural Resources, 13(1&2): 38-42, 2020
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Rai, A., L. P. Sah, K. Adhikari, and K. Shrestha. "Farmer's Perception of Fruit Fly Bactrocera spp. in Mandarin Orange and their Management in Sankhuwasabha District of Nepal." Journal of the Plant Protection Society 7, no. 01 (August 8, 2022): 45–52. http://dx.doi.org/10.3126/jpps.v7i01.47287.

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The study was conducted from October to December, 2020 to evaluate farmers' understanding of loss incurred by Bactrocera spp. on mandarin orange and practices adopted by farmers for their management. Eighty households of mandarin orange growers and 15 agro-vets were purposively selected and information was collected using a semi structured questionnaire. The findings indicated severe infestation of fruit fly in mandarin with 53% of the farmers having low (>15%), 36% having medium (15-30%) and 11% having high (>30%) level of fruit damage in their orchards. The survey identified several management practices like collection and destruction of fallen fruits, pruning, use of traps and chemical pesticides in controlling fruit fly. About two-third (61.25%) of the respondents used chemicals and 15% of the farmers collected and destroyed affected fallen fruits. Some farmers also practiced pruning in the study area for the control of fruit fly. The use of traps was a rarity and its use was limited to only 10% of the total respondents. Since farmers were not much aware of the impact, life cycle and different species of fruit fly, lacked adequate training, support, and supervision, effective management of fruit fly was not possible and resulted in a much greater damage in mandarin fruit.
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Dissertations / Theses on the topic "Fruit fly"

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Cameron, Emilie C. "Fruit Fly Pests of Northwestern Australia." University of Sydney, 2007. http://hdl.handle.net/2123/1711.

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Doctor of Philosophy(PhD),<br>Until recently, Northwestern Australia was thought to be relatively free of serious fruit fly pests. Although a noxious strain, present in Darwin since 1985, was widely believed to be an infestation of the Queensland fruit fly, Bactrocera tryoni, from the East coast, the fruit flies present outside this area were believed to be the benign endemic species, B. aquilonis. However, during the year 2000, infestations of fruit flies were discovered on major commercial crops in both Western Australia and the Northern Territory. It was not known whether these outbreaks were due to an invasion of the major pest species, Bactrocera tryoni, a change in the behaviour of B. aquilonis, or a hybridisation event between the two species. Finding the source of these outbreaks has been complicated by the fact that, since B. tryoni and B. aquilonis are virtually indistinguishable morphologically, it was not known which species are present in the region. Traditionally any tryoni complex fly caught in the Northwest was called B. aquilonis based solely on location. In order to get a good population profile of the region, an extensive trapping program was set up to include flies from urban areas, commercial crops and natural areas where the benign strain is thought to remain. Tests of genetic differentiation and clustering analyses revealed a high degree of homogeneity in the Northwest samples, suggesting that just one species is present in the region. The Northwest samples were genetically differentiated from the Queensland samples but only to a small degree (FST =0.0153). MtDNA sequencing results also showed a small degree of differentiation between these regions. A morphological study of wing shape indicated that there are some minor identifiable morphological differences between East coast and Northwest laboratory reared flies. This difference was greater than that seen between B. jarvisi populations across the same geographic range. The results suggest that the flies caught in the Northwest are a separate population of B. tryoni. Soon after pest flies were discovered in Darwin, a population became established in Alice Springs. This population had a low genetic diversity compared with Queensland and Darwin populations, and showed evidence of being heavily founded. In 2000, an outbreak was discovered in the nearby town of Ti Tree. Due to the geographic and genetic similarity of these populations, Alice Springs was determined to be the source of the Ti Tree outbreak. To investigate the founding of these populations, a program was developed to estimate the propagule size. Using a simulation method seven different statistics were tested for estimating the propagule size of an outbreak population. For outbreaks originating from populations with high genetic diversity, the number of alleles was a good estimator of propagule size. When, however, the genetic diversity of the source population was already reduced, allele frequency measures, particularly the likelihood of obtaining the outbreak population from the source population, gave more accurate estimates. Applying this information to the Alice Springs samples, it was estimated that just five flies were needed to found the major population in and around Alice Springs. For Ti Tree, the propagule size was estimated to be 27 flies (minimum 10). In 2000, a much larger outbreak occurred in the developing horticultural region of Kununurra in northern Western Australia. An important question for the management of the problem is whether there is an established fly population or the flies are reinvading each year. This population was found to have a large amount of gene flow from the Northern Territory. Within the Kununurra samples, one group of flies was genetically differentiated from all the other samples. This group came from a small geographic area on the periphery of Kununurra and appeared to be the result of an invasion into this area at the time when the population was building up following the dry season. A further threat to the Northwest horticultural regions comes from B. jarvisi. A recent increase in the host range of this species has lead to speculation that it may become a greater pest in Northwestern Australia. At the present time, protocols for the population monitoring and disinfestation of this species are not in place. Here it is shown that B. jarvisi eggs are more heat tolerant than B. tryoni eggs and that monitoring of B. jarvisi populations is possible using cue lure traps placed according to fruiting time and location of their favoured host, Planchonia careya.
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Cameron, Emilie C. "Fruit Fly Pests of Northwestern Australia." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1711.

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Until recently, Northwestern Australia was thought to be relatively free of serious fruit fly pests. Although a noxious strain, present in Darwin since 1985, was widely believed to be an infestation of the Queensland fruit fly, Bactrocera tryoni, from the East coast, the fruit flies present outside this area were believed to be the benign endemic species, B. aquilonis. However, during the year 2000, infestations of fruit flies were discovered on major commercial crops in both Western Australia and the Northern Territory. It was not known whether these outbreaks were due to an invasion of the major pest species, Bactrocera tryoni, a change in the behaviour of B. aquilonis, or a hybridisation event between the two species. Finding the source of these outbreaks has been complicated by the fact that, since B. tryoni and B. aquilonis are virtually indistinguishable morphologically, it was not known which species are present in the region. Traditionally any tryoni complex fly caught in the Northwest was called B. aquilonis based solely on location. In order to get a good population profile of the region, an extensive trapping program was set up to include flies from urban areas, commercial crops and natural areas where the benign strain is thought to remain. Tests of genetic differentiation and clustering analyses revealed a high degree of homogeneity in the Northwest samples, suggesting that just one species is present in the region. The Northwest samples were genetically differentiated from the Queensland samples but only to a small degree (FST =0.0153). MtDNA sequencing results also showed a small degree of differentiation between these regions. A morphological study of wing shape indicated that there are some minor identifiable morphological differences between East coast and Northwest laboratory reared flies. This difference was greater than that seen between B. jarvisi populations across the same geographic range. The results suggest that the flies caught in the Northwest are a separate population of B. tryoni. Soon after pest flies were discovered in Darwin, a population became established in Alice Springs. This population had a low genetic diversity compared with Queensland and Darwin populations, and showed evidence of being heavily founded. In 2000, an outbreak was discovered in the nearby town of Ti Tree. Due to the geographic and genetic similarity of these populations, Alice Springs was determined to be the source of the Ti Tree outbreak. To investigate the founding of these populations, a program was developed to estimate the propagule size. Using a simulation method seven different statistics were tested for estimating the propagule size of an outbreak population. For outbreaks originating from populations with high genetic diversity, the number of alleles was a good estimator of propagule size. When, however, the genetic diversity of the source population was already reduced, allele frequency measures, particularly the likelihood of obtaining the outbreak population from the source population, gave more accurate estimates. Applying this information to the Alice Springs samples, it was estimated that just five flies were needed to found the major population in and around Alice Springs. For Ti Tree, the propagule size was estimated to be 27 flies (minimum 10). In 2000, a much larger outbreak occurred in the developing horticultural region of Kununurra in northern Western Australia. An important question for the management of the problem is whether there is an established fly population or the flies are reinvading each year. This population was found to have a large amount of gene flow from the Northern Territory. Within the Kununurra samples, one group of flies was genetically differentiated from all the other samples. This group came from a small geographic area on the periphery of Kununurra and appeared to be the result of an invasion into this area at the time when the population was building up following the dry season. A further threat to the Northwest horticultural regions comes from B. jarvisi. A recent increase in the host range of this species has lead to speculation that it may become a greater pest in Northwestern Australia. At the present time, protocols for the population monitoring and disinfestation of this species are not in place. Here it is shown that B. jarvisi eggs are more heat tolerant than B. tryoni eggs and that monitoring of B. jarvisi populations is possible using cue lure traps placed according to fruiting time and location of their favoured host, Planchonia careya.
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Van, der Merwe Cornelia. "Longevity and oviposition of Mediterranean fruit fly (Ceratitis capitata) (Diptera : Tephritidae) fed on a predominantly sugar and a predominantly protein diet." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52326.

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Thesis (MSc)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Experiments using the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), were conducted to determine the mortality of males and females and the ovipositing ability of females fed on two diets. The sugar diet consisted of 5: 1 sugar:protein and the protein diet consisted of 5:1 protein: sugar. Dilutions of 80%, 60%, 40%, 20% and 10% with water of both diets were also provided to the flies. Female longevity was shorter than male longevity. There was no difference in female longevity between fruit flies fed on the two diets. However, males fed on the sugar diet lived longer than those fed on the protein diet. More eggs per female per day were laid by those fed the sugar diet than by those fed the protein diet. There were no differences m oviposition between flies fed on the different concentrations of the two diets.<br>AFRIKAANSE OPSOMMING: Proewe met die Mediterreense vrugtevlieg, Ceratitis capitata (Wiedemann), is uitgevoer om die mortaliteit van die mannetjies en wyfies, asook eierlegging van wyfies wat met twee verskillende diëte voorsien is, te bepaal. Die onderskeie diëte het uit 'n mengsel van proteïen en suiker (5 dele suiker en 1 deel proteïen) en (5 dele proteïen en 1 deel suiker) bestaan. Verdunnings van 80%, 60%, 40%, 20% en 10% is van die onderskeie diëte gemaak en aan die vlieë voorsien. Daar was geen verskil in die lewensduur van wyfies wat op die twee diëte gevoed is nie. Mannetjies wat op die oorwegende suiker dieët gevoed is, het langer as dié wat op die proteïen dieët gevoed is, geleef. Vlieë wat op die suiker dieët gevoed het, het regdeur 'n hoër gemiddelde daaglikse eierlegging per wyfie as dié wat op die proteïen dieët gevoed het, getoon. Geen noemenswaardige verskil in eierlegging vir vlieë wat op verskillende konsentrasies van die twee diëte gevoed het, is gevind nie.
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Tasnin, Mst Shahrima. "Demographic structure and aging in Bactrocera tryoni (Diptera: Tephritidae) in subtropical Australia." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207465/1/Mst%20Shahrima_Tasnin_Thesis.pdf.

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Queensland fruit fly is a destructive horticultural insect pest. Knowing the age-structure of fly populations, that is the relative proportion of young, middle-age, and old-age flies within a population at a given time, is critical for effective management. The thesis combined behavioural ecology with a novel mathematical analysis to identify the seasonal changes in the age of a wild Queensland fruit fly population. The study showed that the abundance and age-structure of the fly changed predictably with the season, strongly suggestive of an endogenous mechanism that helps the fly cope with seasonal changes in resource availability.
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Corcoran, R. J. "Fruit fly (Diptera:Tephritidae) responses to quarantine heat treatment /." St. Lucia, Qld, 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16489.pdf.

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Wallace, Erin Louise. "Investigating Life History Stages and Methods to Interrupt the Life Cycle, and Suppress Offspring Production, in the Queensland Fruit Fly (Bactrocera tryoni)." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/365473.

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Outbreaks of insect pests pose a serious threat to local economies and global food production, with as much as 15% of global crop production lost to herbivorous insects annually. Outbreaks of transboundary pests and diseases that affect food crops have increased in frequency in conjunction with globalization, international trade and the impacts of climate change. Indeed, increasing global temperatures are predicted to increase the distribution, rate of development, survival and population density of many pest insects. Such changes have important ramifications for host plant exploitation. The Queensland fruit fly (Bactrocera tryoni) is Australia’s worst horticultural pest, and is feared by international buyers of Australian produce. Like other Tephritid fruit fly species, B. tryoni has the potential to breach quarantine barriers via human mediated transport, and can rapidly establish in ‘new’ environments. This pest species is responsible for an estimated AU$28.5 million in annual yield loss, management costs and loss to domestic and international markets. Increasing and ongoing outbreaks of B. tryoni in Australia’s major growing regions has put international trade in jeopardy.<br>Thesis (PhD Doctorate)<br>Doctor of Philosophy (PhD)<br>Griffith School of Environment<br>Science, Environment, Engineering and Technology<br>Full Text
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Kölling, Nils. "Quantitative genetics of gene expression during fruit fly development." Thesis, University of Cambridge, 2016. https://www.repository.cam.ac.uk/handle/1810/256090.

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Over the last ten years, genome-wide association studies (GWAS) have been used to identify genetic variants associated with many diseases as well as quantitative phenotypes, by exploiting naturally occurring genetic variation in large cohorts of individuals. More recently, the GWAS approach has also been applied to highthroughput RNA sequencing (RNA-seq) data in order to find loci associated with different levels of gene expression, called expression quantitative trait loci (eQTL). Because of the large amount of data that is required for such high-resolution eQTL studies, most of them have so far been carried out in humans, where the cost of data collection could be justified by a possible future impact in human health. However, due to the rapidly falling price of high-throughput sequencing it is now also becoming feasible to perform high-resolution eQTL studies in higher model organisms. This enables the study of gene regulation in biological contexts that have so far been beyond our reach for practical or ethical reasons, such as early embryonic development. Taking advantage of these new possibilities, we performed a high-resolution eQTL study on 80 inbred fruit fly lines from the Drosophila Genetic Reference Panel, which represent naturally occurring genetic variation in a wild population of Drosophila melanogaster. Using a 3′ Tag RNA-sequencing protocol we were able to estimate the level of expression both of genes as well as of different 3′ isoforms of the same gene. We estimated these expression levels for each line at three different stages of embryonic development, allowing us to not only improve our understanding of D. melanogaster gene regulation in general, but also investigate how gene regulation changes during development. In this thesis, I describe the processing of 3′ Tag-Seq data into both 3′ isoform expression levels and overall gene expression levels. Using these expression levels I call proximal eQTLs both common and specific to a single developmental stage with a multivariate linear mixed model approach while accounting for various confounding factors. I then investigate the properties of these eQTLs, such as their location or the gene categories enriched or depleted in eQTLs. Finally, I extend the proximal eQTL calling approach to distal variants to find gene regulatory mechanisms acting in trans. Taken together, this thesis describes the design, challenges and results of performing a multivariate eQTL study in a higher model organism and provides new insights into gene regulation in D. melanogaster during embryonic development.
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Knowles-Barley, Seymour Francis. "Proteins, anatomy and networks of the fruit fly brain." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/6177.

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Our understanding of the complexity of the brain is limited by the data we can collect and analyze. Because of experimental limitations and a desire for greater detail, most investigations focus on just one aspect of the brain. For example, brain function can be studied at many levels of abstraction including, but not limited to, gene expression, protein interactions, anatomical regions, neuronal connectivity, synaptic plasticity, and the electrical activity of neurons. By focusing on each of these levels, neuroscience has built up a detailed picture of how the brain works, but each level is understood mostly in isolation from the others. It is likely that interaction between all these levels is just as important. Therefore, a key hypothesis is that functional units spanning multiple levels of biological organization exist in the brain. This project attempted to combine neuronal circuitry analysis with functional proteomics and anatomical regions of the brain to explore this hypothesis, and took an evolutionary view of the results obtained. During the process we had to solve a number of technical challenges as the tools to undertake this type of research did not exist. Two informatics challenges for this research were to develop ways to analyze neurobiological data, such as brain protein expression patterns, to extract useful information, and how to share and present this data in a way that is fast and easy for anyone to access. This project contributes towards a more wholistic understanding of the fruit fly brain in three ways. Firstly, a screen was conducted to record the expression of proteins in the brain of the fruit fly, Drosophila melanogaster. Protein expression patterns in the fruit fly brain were recorded from 535 protein trap lines using confocal microscopy. A total of 884 3D images were annotated and made available on an easy to use website database, BrainTrap, available at fruitfly.inf.ed.ac.uk/braintrap. The website allows 3D images of the protein expression to be viewed interactively in the web browser, and an ontology-based search tool allows users to search for protein expression patterns in specific areas of interest. Different expression patterns mapped to a common template can be viewed simultaneously in multiple colours. This data bridges the gap between anatomical and biomolecular levels of understanding. Secondly, protein trap expression patterns were used to investigate the properties of the fruit fly brain. Thousands of protein-protein interactions have been recorded by methods such as yeast two-hybrid, however many of these protein pairs do not express in the same regions of the fruit fly brain. Using 535 protein expression patterns it was possible to rule out 149 protein-protein interactions. Also, protein expression patterns registered against a common template brain were used to produce new anatomical breakdowns of the fruit fly brain. Clustering techniques were able to naturally segment brain regions based only on the protein expression data. This is just one example of how, by combining proteomics with anatomy, we were able to learn more about both levels of understanding. Results are analysed further in combination with networks such as genetic homology networks, and connectivity networks. We show how the wealth of biological and neuroscience data now available in public databases can be combined with the Brain- Trap data to reveal similarities between areas of the fruit fly and mammalian brain. The BrainTrap data also informs us on the process of evolution and we show that genes found in fruit fly, yeast and mouse are more likely to be generally expressed throughout the brain, whereas genes found only in fruit fly and mouse, but not yeast, are more likely to have a specific expression pattern in the fruit fly brain. Thus, by combining data from multiple sources we can gain further insight into the complexity of the brain. Neural connectivity data is also analyzed and a new technique for enhanced motifs is developed for the combined analysis of connectivity data with other information such as neuron type data and potentially protein expression data. Thirdly, I investigated techniques for imaging the protein trap lines at higher resolution using electron microscopy (EM) and developed new informatics techniques for the automated analysis of neural connectivity data collected from serial section transmission electron microscopy (ssTEM). Measurement of the connectivity between neurons requires high resolution imaging techniques, such as electron microscopy, and images produced by this method are currently annotated manually to produce very detailed maps of cell morphology and connectivity. This is an extremely time consuming process and the volume of tissue and number of neurons that can be reconstructed is severely limited by the annotation step. I developed a set of computer vision algorithms to improve the alignment between consecutive images, and to perform partial annotation automatically by detecting membrane, synapses and mitochondria present in the images. Accuracy of the automatic annotation was evaluated on a small dataset and 96% of membrane could be identified at the cost of 13% false positives. This research demonstrates that informatics technology can help us to automatically analyze biological images and bring together genetic, anatomical, and connectivity data in a meaningful way. This combination of multiple data sources reveals more detail about each individual level of understanding, and gives us a more wholistic view of the fruit fly brain.
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Ant, Thomas. "Genetic control of the olive fruit fly, Bactrocera oleae." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:43f97545-f631-43cc-991c-7edb6dd71d2d.

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The olive fruit fly, Bactrocera oleae, (Rossi) (Diptera:Tephritidae), is a key pest of olive crops. The sterile insect technique (SIT) is an environmentally benign and species-specific method of pest control, aiming to reduce the reproductive potential of a wild population through the mass-release of sterile insects. Previous olive fly SIT trials, involving the release of gamma-ray sterilised mixed-sex populations, achieved limited success. Key problems included altered diurnal mating rhythms of the laboratory-reared insects, leading to assortative mating between released and wild populations, and low competitiveness of the radiation sterilised mass-reared flies. Consequently, the production of competitive, male-only release cohorts is seen as essential. The RIDL (Release of Insects carrying a Dominant Lethal) system is a transgene-based derivative of SIT, one version of which involves the mass release of insects carrying a female specific lethal transgene (fsRIDL). This thesis describes: 1) the development of fsRIDL olive fly strains and the molecular analysis of transgene insertion and function; 2) the analysis of strain life-history parameters; 3) studies into sexual selection and mating compatibility; 4) a caged proof-of-principle population suppression trial; and, 5) selection dynamics on the fsRIDL trait in caged populations. Olive fly fsRIDL strains were developed with full female-lethal penetrance and repressibility. The lead strain displayed similar life-history and sexual competitiveness traits to those of the wild-type strain from which they were derived. In addition, transgenic males showed photoperiod compatibility and strong sexual competitiveness with field-collected wild olive flies. The feasibility of the fsRIDL approach was demonstrated when repeated male releases caused eradication of caged olive fly populations. Although needing field confirmation, these results suggest that fsRIDL olive fly strains may help to mitigate key problems experienced in previous olive fly SIT trials, and could help form the basis of a renewed effort towards olive fly SIT control.
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Wessendorf, Lisa H. V. "Genetic and molecular characterization of wing development in Drosophila." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309358.

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Books on the topic "Fruit fly"

1

Christian, Thompson F., United States. Dept. of Agriculture., and Beltsville Agricultural Research Center, eds. Fruit fly (Diptera: Tephritidae) literature. Washington, D.C: United States Dept. of Agriculture, Beltsville Agricultural Research Center, 1998.

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United States. Animal and Plant Health Inspection Service. Beware of the Mediterranean fruit fly! Riverdale, Md.?]: U.S. Dept. of Agriculture, Animal and Plant Heath Inspection Service, 1999.

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Retan, Arthur H. Walnut husk fly. Pullman: Cooperative Extension, College of Agriculture & Home Economics, Washington State University, 1987.

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United States. Animal and Plant Health Inspection Service. Please help prevent foreign fruit-fly outbreaks. [United States]: USDA Animal and Plant Health Inspection Service, 2004.

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Stibick, Jeffrey N. L. Action plan: Malaysian fruit fly, Bactrocera latifrons (Hendel). Hyattsville, Md.]: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 1993.

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J, Spencer G., and Ontario. Dept. of Agriculture., eds. Cherry fruit-flies. Toronto: Dept. of Agriculture, 1997.

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California. Legislature. Assembly. Office of Research., ed. Return of the medfly: The battle continues. Sacramento, CA: Joint Publications Office, 1990.

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International Cherry Fruit Fly Symposium (1995 Oregon State University). Biology and control of the cherry fruit flies: A worldwide perspective. Corvallis, Or: Agricultural Experiment Station, Oregon State University, 1996.

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Mangel, Marc, James R. Carey, and Richard E. Plant, eds. Pest Control: Operations and Systems Analysis in Fruit Fly Management. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70883-1.

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United States. Animal and Plant Health Inspection Service., ed. Fruit fly cooperative control program: Draft environmental impact statement, 1999. [Riverdale, MD: U.S. Dept. of Agriculture, Marketing and Regulatory Programs, Animal and Plant Health Inspection Service, 1999.

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Book chapters on the topic "Fruit fly"

1

Shelly, Todd E. "Fruit Fly Alphabets." In Trapping and the Detection, Control, and Regulation of Tephritid Fruit Flies, 3–11. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9193-9_1.

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Poluektova, E. V., V. G. Mitrofanov, G. M. Burychenko, E. N. Myasnyankina, and E. D. Bakulina. "The Fruit Fly Drosophila." In Animal Species for Developmental Studies, 179–201. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0503-3_7.

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Xing, Bo, and Wen-Jing Gao. "Fruit Fly Optimization Algorithm." In Innovative Computational Intelligence: A Rough Guide to 134 Clever Algorithms, 167–70. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03404-1_11.

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Thompson, F. C., A. L. Norrbom, L. E. Carroll, and I. M. White. "The Fruit Fly Biosystematic Information Data Base." In Fruit Flies, 3–7. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_1.

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Landolt, P. J. "Chemical Ecology of the Papaya Fruit Fly." In Fruit Flies, 207–10. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_39.

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Vargas, R. I. "Fruit Fly Eradication Research Programs in Hawaii." In Fruit Flies, 415–18. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_79.

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Boller, E. F. "Current Research on Fruit Fly Host Marking Pheromones." In Fruit Flies, 195–99. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_37.

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Quilici, S., and B. Trahais. "Improving Fruit Fly Trapping Systems in Reunion Island." In Fruit Flies, 235–40. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_45.

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Hentze, F., R. Mata, and N. Urbina. "A Central American Program for Fruit Fly Control." In Fruit Flies, 449–54. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_84.

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Buchinger, D. E. "California Fruit Industry Comments Regarding Fruit Fly Research." In Fruit Flies, 473–74. New York, NY: Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4757-2278-9_87.

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Conference papers on the topic "Fruit fly"

1

Medina-Ramos, Carlos, Henrique De Aguiar-Minami, Daniel Carbonel-Olazabal, Jhon Zelada-Rodriguez, Michael Vera-Panez, and Alonso Tenorio-Trigoso. "Object Detection Algorithms Identifying Ceratitis Capitata Fruit Fly." In 2024 IEEE Biennial Congress of Argentina (ARGENCON), 1–8. IEEE, 2024. http://dx.doi.org/10.1109/argencon62399.2024.10735981.

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Gregor, Benedikt, Tye Dougherty, David van Herpt, Alexa Smith, Noel Prangley, Jake Devlin, Nawanjani Pathinayake, et al. "Fruit Fly Smoke Generation and Exposure Chamber Apparatus." In 2024 IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 638–42. IEEE, 2024. http://dx.doi.org/10.1109/ccece59415.2024.10667154.

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Wahyuni, Indah Desri, Nabila Husna Shabrina, and Suputa. "Deep Learning-based Method for Automatic Fruit Fly Detection and Counting." In 2024 IEEE International Conference on Computing (ICOCO), 84–89. IEEE, 2024. https://doi.org/10.1109/icoco62848.2024.10928236.

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Shum, Angela J., and Babak A. Parviz. "Vacuum microfabrication on live fruit fly." In 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2007. http://dx.doi.org/10.1109/memsys.2007.4433046.

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Epsky, Nancy D. "Caribbean fruit fly (Diptera: Tephritidae) and small fruit in Florida." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.93467.

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Sinha, Kaushik, and Parikshit Ram. "Fruit-fly Inspired Neighborhood Encoding for Classification." In KDD '21: The 27th ACM SIGKDD Conference on Knowledge Discovery and Data Mining. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3447548.3467246.

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Zhang, Shuiping, Yang Chen, and Yangdan Geng. "Fruit Fly Algorithm Based on Extremal Optimization." In 2016 12th International Conference on Computational Intelligence and Security (CIS). IEEE, 2016. http://dx.doi.org/10.1109/cis.2016.0130.

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Liu, Yuke, Qingyong Zhang, and Lijuan Yu. "Adaptive multi-group fruit fly optimization algorithm." In 2019 34rd Youth Academic Annual Conference of Chinese Association of Automation (YAC). IEEE, 2019. http://dx.doi.org/10.1109/yac.2019.8787618.

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Iscan, Hazim, and Mesut Gunduz. "A Survey on Fruit Fly Optimization Algorithm." In 2015 11th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS). IEEE, 2015. http://dx.doi.org/10.1109/sitis.2015.55.

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Peng, Yingqiong, Muxin Liao, Weiji Huang, Hong Deng, Ling Ao, and Jing Hua. "Fruit Fly Classification via Convolutional Neural Network." In 2018 Chinese Automation Congress (CAC). IEEE, 2018. http://dx.doi.org/10.1109/cac.2018.8623178.

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Reports on the topic "Fruit fly"

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Salazar, Lina, Alessandro Maffioli, Julián Aramburu, and Marcos Agurto Adrianzén. MOSCA Peru: The Fruit Fly Plague. Inter-American Development Bank, July 2017. http://dx.doi.org/10.18235/0000772.

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Audsley, Neil, Gonzalo Avila, Claudio Ioratti, Valerie Caron, Chiara Ferracini, Tibor Bukovinszki, Marc Kenis, et al. Oriental fruit fly, Bactrocera dorsalis (Hendel). Euphresco, 2023. http://dx.doi.org/10.1079/20240228451.

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Bactrocera dorsalis, also known as the Oriental fruit fly, is a highly polyphagous invasive pest originating from tropical south east Asia. It has invaded over 50 countries, causing significant economic damage to a wide range of fruit and vegetable crops through oviposition and larval development. The species thrives in tropical and subtropical climates, with potential to spread to warm temperate regions under irrigation or climate change. Classical biological control efforts against B. dorsalis have primarily involved the introduction of parasitic wasps, such as Fopius arisanus and Diachasmimorpha longicaudata. F. arisanus has shown high effectiveness, with significant reductions in B. dorsalis populations in Hawaii, French Polynesia, and parts of Africa, while D. longicaudata has been less successful. F. arisanus is considered the most promising biological control agent due to its high parasitism rates and adaptability, though it has not established in all regions. Other natural enemies, including various hymenopteran parasitoids and the predatory ant Oecophylla longinoda, have shown limited effectiveness and potential ecological drawbacks. Combining F. arisanus with other biological control agents targeting different life stages of B. dorsalis could enhance overall control efforts.
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Audsley, Neil, Gonzalo Avila, Claudio Ioratti, Valerie Caron, Chiara Ferracini, Tibor Bukovinszki, Marc Kenis, et al. Peach fruit fly, Bactrocera zonata (Saunders). Euphresco, 2023. http://dx.doi.org/10.1079/20240228454.

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Bactrocera zonata, commonly known as the peach fruit fly, is a polyphagous pest native to tropical Asia, causing significant damage to various fruit crops, especially guava, mango and peach. It has spread to Southern and south east Asia, Egypt and other North African countries. The introduction of the pest to new areas is primarily driven by international tourism and trade of infested fruit. Its ability to establish in new regions is influenced by temperature and humidity, with potential for expansion under climate change. Despite its severity, few biological control efforts have been documented due to limited knowledge of potential natural enemies. Efforts in Africa have included releasing parasitoids, such as Aganaspis daci, Fopius arisanus, Diachasmimorpha longicaudata and Psyttalia incisi, with partial success. F. arisanus shows promise as a biological control agent, capable of parasitizing B. zonata in laboratory conditions, but may face climatic challenges in North Africa. Other natural enemies have been identified, but their low parasitism rates make them less viable for biological control. Further research is needed to assess the potential of various parasitoids for controlling B. zonata effectively.
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Audsley, Neil, Gonzalo Avila, Claudio Ioratti, Valerie Caron, Chiara Ferracini, Tibor Bukovinszki, Marc Kenis, et al. Mexican fruit fly, Anastrepha ludens (Loew). Euphresco, 2023. http://dx.doi.org/10.1079/20240228445.

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The Mexican fruit fly (Anastrepha ludens) is a major pest of mango and citrus, causing significant damage through larval tunneling and fruit rotting. Native to Central America, it has also been found in the southern USA and poses a potential threat to the Mediterranean region. Classical biological control efforts began in the 1950s with the introduction of various parasitoids, though only Diachasmimorpha longicaudata and Aceratoneuromyia indica established successfully. Diachasmimorpha longicaudata remains the most effective, achieving up to 33% parasitism in augmentative releases. Other promising natural enemies include Doryctobracon crawfordi and Coptera haywardii, both native to the Neotropics. Numerous other parasitoids and predators, such as ants and spiders, contribute to A. ludens control, but their specific impacts and potential for biological control programs require further study.
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Saul, Stephen, and Yoram Rossler. Genetic Sexing of the Mediterranean Fruit Fly. United States Department of Agriculture, September 1985. http://dx.doi.org/10.32747/1985.7566587.bard.

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Aguilar, Glenn, Dan Blanchon, Hamish Foote, Christina Pollonais, and Asia Mosee. Queensland Fruit Fly Invasion of New Zealand: Predicting Area Suitability Under Future Climate Change Scenarios. Unitec ePress, October 2017. http://dx.doi.org/10.34074/pibs.rs22015.

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The Queensland fruit fly (Bactrocera tryoni) is a significant horticultural pest in Australia, and has also established in other parts of the Pacific. There is a significant risk to New Zealand of invasion by this species, and several recent incursions have occurred. The potential effects of climate change on the distribution and impacts of invasive species are well known. This paper uses species distribution modelling using Maxent to predict the suitability of New Zealand to the Queensland fruit fly based on known occurrences worldwide and Bioclim climatic layers. Under current climatic conditions the majority of the country was generally in the lower range, with some areas in the medium range. Suitability prediction maps under future climate change conditions in 2050 and 2070, at lower emission (RCP 2.6) and higher emission (RCP 8.5) scenarios generally show an increase in suitability in both the North and South Islands. Calculations of the shift of suitable areas show a general movement of the centroid towards the south-east, with the higher emission scenario showing a greater magnitude of movement.
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Salazar, Lina, Marcos Agurto Adrianzen, and Luis Alvarez. Estimating the Long-term Effects of a Fruit Fly Eradication Program Using Satellite Imagery. Inter-American Development Bank, August 2023. http://dx.doi.org/10.18235/0005056.

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This analysis applies a regression discontinuity approach combined with remote sensing data to measure the productivity impacts linked to a fruit-fly eradication program, implemented in Peru. For this purpose, satellite imagery was used to estimate a vegetation index over a 10-year span for a sample of 305 producers -155 treated and 150 controls-. The results confirmed that program participation increased agricultural productivity in the short and long terms, in a range from 12% to 49%. However, quantile regression methods suggest that most productive farmers were able to obtain greater impacts.
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Jurkevitch, Edouard, Carol Lauzon, Boaz Yuval, and Susan MacCombs. role of nitrogen-fixing bacteria in survival and reproductive success of Ceratitis capitata, the Mediterranean fruit fly. United States Department of Agriculture, September 2005. http://dx.doi.org/10.32747/2005.7695863.bard.

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Objectives: to demonstrate nitrogen fixation in the gut of Ceratitiscapitata, the Mediterranean fruit fly and that fixed nitrogen is important for the fly. Background: Fruit flies (Diptera: Tephritidae) are a highly successful, widespread group of insects causing enormous economic damage in agriculture. They are anautogenous, i.e. the acquisition of nitrogenous compounds by both male and female is essential for the realization of their reproductive potential. Nitrogen, although abundant in the atmosphere, is paradoxically a limiting resource for multicellular organisms. In the Animalia, biological nitrogen fixation has solely been demonstrated in termites. Major achievements and conclusions: We found that all individuals of field-collected medflies harbor large diazotrophicenterobacterial populations that express dinitrogenreductase in the gut. Moreover, nitrogen fixation was demonstrated in isolated guts and in live flies and may significantly contribute to the fly’s nitrogen intake. Specific components of these communities were shown to be transmitted vertically between flies. Moreover, we found that the gut bacterial community changes during the fly’s active season both in composition and complexity. Moreover, strong changes in community structure were also observed between the fly's various developmental stages. An initial analysis using SuPERPCR, a technology enabling the detection of minor populations by selective elimination of the dominant 16S rDNA sequences revealed that Pseudomonasspp. may also be part of the gut community. Implications: The presence of similar bacterial consortia in additional insect orders suggests that nitrogen fixation occurs in vast pools of terrestrial insects. On such a large scale, this phenomenon may have a considerable impact on the nitrogen cycle.
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Salazar, Lina, Alessandro Maffioli, Julián Aramburu, and Marcos Agurto Adrianzen. Estimating the Impacts of a Fruit Fly Eradication Program in Peru: A Geographical Regression Discontinuity Approach. Inter-American Development Bank, March 2016. http://dx.doi.org/10.18235/0012282.

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In this paper, we evaluate the short term impact of a Fruit Fly Eradication Program in the coastal areas of Peru. Exploiting arbitrary variation in the program's intervention borders, as well as precise geographic location data of farmer's households, we use a Geographical Regression Discontinuity (GRD) approach to identify the program's effects on agricultural outcomes. For this purpose, baseline and follow up surveys were collected for 615 households -307 treated and 308 controls- . Baseline data shows that producer and farm-level characteristics in treated and control areas are balanced. This confirms that the program's intervention borders were set only as a function of financial and logistic restrictions and independently of the pest incidence levels and/or other producer and/or farm characteristics. The results show that farmers in treated areas improved pest knowledge and are more likely to implement best practices for plague prevention and control. Beneficiary farmers also present increased fruit crops productivity and sales. The robustness of these findings is confirmed using placebo tests.
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Salazar, Lina, Alessandro Maffioli, Julián Aramburu, and Marcos Agurto Adrianzen. Estimating the Impacts of a Fruit Fly Eradication Program in Peru: A Geographical Regression Discontinuity Approach. Inter-American Development Bank, March 2016. http://dx.doi.org/10.18235/0000253.

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