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Yoshihisa Abe - One of the best experts on this subject based on the ideXlab platform.
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Invasion of Japan by exotic leafminers Liriomyza spp. (Diptera: Agromyzidae) and its consequences
Applied Entomology and Zoology, 2017Co-Authors: Yoshihisa AbeAbstract:Identifying patterns and causes of species displacement is important from the viewpoints of ecology and evolutionary biology as this phenomenon affects community structure. Here I review the species displacement between Liriomyza trifolii (Burgess) and Liriomyza sativae Blanchard (Diptera: Agromyzidae) in Japan. These two species and Liriomyza huidobrensis (Blanchard) originated from the New World and are considered to have invaded Japan from around 1990 to the early 2000s. During this period, L. trifolii was apparently displaced by L. sativae , but the direction of displacement in Japan has been contrary to that observed between the same two species in the USA and China. While the displacement of L. sativae by L. trifolii in these two countries can be attributed to the lower insecticide susceptibility of L. trifolii there, species displacement in the opposite direction in Japan is probably due to the relatively high fecundity of L. sativae and differential effects of the introduced parasitoid Dacnusa sibirica Telenga (Hymenoptera: Braconidae) on both Liriomyza species, except in the south of the country.
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Displacement in two invasive species of leafminer fly in different localities
Biological Invasions, 2008Co-Authors: Yoshihisa Abe, Susumu TokumaruAbstract:Liriomyza sativae was displaced by L. trifolii in the USA probably due to the lower insecticide susceptibility of L. trifolii , but L. trifolii was displaced by L. sativae in Japan. To know the possible causes of the species displacement observed in Japan, differences in the insecticide susceptibility, fecundity, effects of natural enemies, and reproductive interference between L. trifolii and L. sativae were evaluated. As a result, the higher fecundity of L. sativae and differential effects of parasitoids on the two Liriomyza species are considered to be contributing factors.
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seasonal prevalence and species composition of Liriomyza sativae blanchard l trifolii burgess and l bryoniae kaltenbach diptera agromyzidae in kyoto prefecture
Applied Entomology and Zoology, 2007Co-Authors: Susumu Tokumaru, Yasuhiko Ando, Hideki Kurita, Yoshikimi Hayashida, Masahiro Ishiyama, Yoshihisa AbeAbstract:To document the relative abundance of Liriomyza sativae, L. trifolii, and L. bryoniae, the seasonal prevalence of three Liriomyza species infesting commercially grown tomato and cucumber plants was surveyed in four greenhouses in Kyoto Prefecture from 2000 to 2002. In tomato greenhouses, only L. bryoniae was found from April to July 2000 and 2002, but from August to December 2000 and 2002, L. sativae was predominant. Throughout 2001, L. sativae was predominant with a few L. bryoniae. In cucumber greenhouses, only a few L. bryoniae were found from April to June 2002. From August to November 2002, only L. sativae was found, except for one L. trifolii. Additionally, the species composition of the three Liriomyza species infesting commercially grown vegetable plants was occasionally surveyed by collecting full-grown larvae and pupae of Liriomyza found on the foliage of these plants at various locations in Kyoto Prefecture from 1997 to 2002. In 1997 and 1998, only L. trifolii or L. bryoniae was found. In 1999, L. sativae was also collected, but L. trifolii or L. bryoniae was predominant; however, from 2000 to 2002, L. sativae was predominant, and L. trifolii and L. bryoniae populations decreased suddenly.
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coexistence of the vegetable leafminer Liriomyza sativae diptera agromyzidae with l trifolii and l bryoniae on commercially grown tomato plants
Applied Entomology and Zoology, 2001Co-Authors: Yoshihisa Abe, Toshiki KawaharaAbstract:The species composition of Liriomyza leafminers infesting commercially grown tomato plants was surveyed in two contiguous greenhouses in Muko City, Kyoto Prefecture, from August to December 1999. Full-grown larvae and puparia of Liriomyza were collected weekly from the greenhouses, and reared to adult emergence in the laboratory. The male adult flies that emerged were identified on the basis of the shape of their genitalia. The results revealed the occurrence of L. sativae, which has not been recorded in Japan. L. sativae coexisted with L. trifolii and L. bryoniae in one tomato greenhouse and with L. bryoniae in the other. Further, the relative abundance of the three species changed throughout the growing season of tomato plants and the peaks of each species population differed.
Komi K M Fiaboe - One of the best experts on this subject based on the ideXlab platform.
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Acceptability and Suitability of Three Liriomyza Species as Host for the Endoparasitoid Halticoptera arduine (Hymenoptera: Pteromalidae).
Environmental entomology, 2018Co-Authors: Samuel K Muchemi, Komivi Senyo Akutse, Claus P. W. Zebitz, Christian Borgemeister, Caroline N Foba, Sunday Ekesi, Komi K M FiaboeAbstract:In the scope of using Halticoptera arduine (Walker; Hymenoptera: Pteromalidae) in a classical biological control program in East Africa, laboratory bioassays were conducted to evaluate the acceptability and suitability of the three economically important Liriomyza leafminer species to the exotic parasitoid. Searching time, number of oviposition attempts, F1 parasitoid developmental period, parasitism rates, sex ratio, host mortality, and body size indices were assessed. H. arduine parasitized and developed successfully in the three Liriomyza species reported in East Africa. Female parasitoids took on average between 10.45 ± 0.83 to 15.80 ± 0.91 (means ± SE) seconds to encounter their first host and made significantly more oviposition attempts on Liriomyza huidobrensis (Blanchard; Diptera: Agromyzidae) than Liriomyza sativae (Blanchard; Diptera: Agromyzidae) and Liriomyza trifolii (Burgess; Diptera: Agromyzidae) (P = 0.0006). Parasitoid development period from egg to adult ranged between 19.32 ± 0.96 and 22.86 ± 0.27 d. Parasitism rate ranged from 27.96 ± 3.86 to 44.10 ± 4.56 in the three host species and was significantly higher in L. huidobrensis than in L. sativae (P = 0.0397). H. arduine did not induce significant nonreproductive host mortality in any of the three Liriomyza hosts. A female-biased parasitoid sex ratio was observed in L. huidobrensis, a balanced sex ratio in L. sativae and a male-biased in L. trifolii. Parasitoids progeny were significantly larger on L. huidobrensis for both tibia and wing length than L. sativae and L. trifolii (P = 0.0109 and P = 0.0192, respectively). The implication for the environmentally friendly management of Liriomyza leafminers in East Africa is discussed.
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Acceptability and Suitability of Three Liriomyza Leafminer Species as Host for the Endoparasitoid Chrysocharis flacilla (Hymenoptera: Eulophidae).
Journal of economic entomology, 2018Co-Authors: Samuel K Muchemi, Komivi Senyo Akutse, Claus P. W. Zebitz, Christian Borgemeister, Caroline N Foba, Sunday Ekesi, Komi K M FiaboeAbstract:Liriomyza leafminers represent important threats to the horticulture sector in East Africa. Parasitism rates of local parasitoids are reported to be low and the endoparasitoid, Chrysocharis flacilla (Walker) (Hymenoptera: Eulophidae), was introduced in Kenya for a classical biological control program. Acceptability and suitability bioassays were conducted on the three economically important Liriomyza species in Africa (Liriomyza huidobrensis (Blanchard) (Diptera: Agromyzidae), Liriomyza sativae (Blanchard) (Diptera: Agromyzidae), and Liriomyza trifolii (Burgess) (Diptera: Agromyzidae). Foraging behavior, developmental time, sex ratio, parasitism rates, host pupal mortality, and body indices of C. flacilla were assessed. Results showed that the three Liriomyza leafminer species were accepted and suitable to C. flacilla. Foraging time was significantly shorter on L. trifolii than on L. sativae and L. huidobrensis. Ninety-eight per cent of females successfully oviposited in the three-host species. Female parasitoids were significantly aggressive in attempting to oviposit on L. huidobrensis than on L. sativae and L. trifolii. High parasitism rates ranging between 73 and 78% were observed from the three Liriomyza hosts, but no significant difference among hosts. C. flacilla-induced significant nonreproductive pupal mortality ranging from 23 to 35%, an attribute rare among endoparasitoids. In all three Liriomyza hosts, the parasitoid progeny was female biased. Parasitoid development period ranged between 16 and 24 d. Female parasitoids reared on L. huidobrensis were significantly bigger than those reared on L. sativae and L. trifolii. The acceptance to local Liriomyza leafminers and high host suppression ability is potential for considerations of C. flacilla in the management of Liriomyza spp. in Africa.
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interaction between chrysocharis flacilla and diglyphus isaea hymenoptera eulophidae two parasitoids of Liriomyza leafminers
Journal of Economic Entomology, 2018Co-Authors: Komivi Senyo Akutse, Samuel K Muchemi, Claus P. W. Zebitz, Christian Borgemeister, Caroline N Foba, Sunday Ekesi, Komi K M FiaboeAbstract:Agromyzid Liriomyza leafminer flies are a major threat to horticultural production in East Africa with low natural control reported. The endoparasitoid Chrysocharis flacilla (Walker; Hymenoptera: Eulophidae) was introduced from Peru into quarantine facilities at ICIPE in Kenya for a leafminer classical biological control program. Interaction assays with one of the dominant local parasitoids, Diglyphus isaea (Walker; Hymenoptera: Eulophidae), using Liriomyza huidobrensis (Blanchard; Diptera: Agromyzidae) was assessed through sole, simultaneous and sequential releases. C. flacilla resulted to superior host parasitism rates over D. isaea. When used separately, specific parasitism rates of D. isaea and C. flacilla were 26.33 ± 2.07% and 60.27 ± 2.53% respectively but, when simultaneously used, the total parasitism rose to 72.96 ± 4.12%. Presence of C. flacilla after D. isaea reduced significantly parasitism rate of D. isaea. Both parasitoids caused separately and simultaneously additionally significant nonreproductive host mortalities of between 48.33 ± 3.75% and 69.33 ± 3.92 for D. isaea and C. flacilla respectively. Sex ratios of C. flacilla and D. isaea F1 progenies were female biased and were not affected by interspecific interactions. Implications of these results for subsequent combined use of C. flacilla and D. isaea against Liriomyza leafminers in East Africa are discussed.
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species composition distribution and seasonal abundance of Liriomyza leafminers diptera agromyzidae under different vegetable production systems and agroecological zones in kenya
Environmental Entomology, 2015Co-Authors: C N Foba, Daisy Salifu, Zipporah Osiemo Lagat, L M Gitonga, Komivi Senyo Akutse, Komi K M FiaboeAbstract:A longitudinal study to identify the species of Liriomyza leafminer, their distribution, relative abundance, and seasonal variation, including their host range, was conducted in vegetable fields at three altitudes in Kenya from November 2011 to November 2012. Three main species were identified: Liriomyza huidobrensis (Blanchard), Liriomyza sativae Blanchard, and Liriomyza trifolii (Burgess), of which L. huidobrensis was the most abundant across all altitudes irrespective of the cropping season and accounting for over 90% of the total Liriomyza specimens collected. Liriomyza species were collected from all infested incubated leaves of 20 crops surveyed belonging to seven families: Fabaceae, Solanaceae, Cucurbitaceae, Malvaceae, Brassicaceae, Amaranthaceae, and Amaryllidaceae. However, more than 87.5% of the Liriomyza species were obtained from only four of these crops: Pisum sativum L., Phaseolus vulgaris L., Solanum lycopersicum L., and Solanum tuberosum, thereby demonstrating that Fabaceae and Solonaceae crops are the most important hosts with regard to Liriomyza species richness and relative abundance. L. huidobrensis had the widest host range (20 crops), followed by L. sativae (18 crops) and L. trifolii (12 crops). Although L. trifolii has been considered the dominant Liriomyza leafminer in Kenya, this study suggests that this may not be the case anymore, as L. huidobrensis dominates at all altitudes.
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differential effects of pesticide applications on Liriomyza huidobrensis diptera agromyzidae and its parasitoids on pea in central kenya
Journal of Economic Entomology, 2015Co-Authors: Daisy Salifu, Komivi Senyo Akutse, M M Guantai, C P K O Ogol, J M Kasina, Komi K M FiaboeAbstract:Three Liriomyza species [Liriomyza huidobrensis (Blanchard), Liriomyza trifolii (Burgess), and Liriomyza sativae Blanchard] have been reported as the most important leafminer pests in vegetable production systems in Africa. In Kenya, farmers rely on indiscriminate synthetic insecticides use. On-farm field investigations were set up at three different locations (Sagana, Kabaru, and Naromoru) in central Kenya to determine the effect of pesticide application on the abundance of leafminers and their parasitoids under three management practices, namely: farmer practice (FP), reduced pesticide use (RP), and a control with no use of pesticides (CO). In addition, laboratory experiments were designed to test the effect of commonly used pesticides in pea production systems in central Kenya--Dimethoate, Dynamec, Thunder, Cyclone, Bestox, Folicur, Milraz, and Bulldock--on L. huidobrensis and two of its parasitoids, Diglyphus isaea Walker and Phaedrotoma scabriventris Nixon. The mean numbers of leafminer flies in control treatment were higher than in RP and FP in both first and second seasons across all sites, but RP and FP did not differ significantly. Parasitoid numbers were very low and there was no much variation between treatments at each location in both first and second seasons. No significant differences were observed between the three management practices with regards to the yield measurements. In the laboratory, the estimated LD50 values for L. huidobrensis larvae were all more than two times higher than the recommended dosages, while the LD50 of adults were below the recommended dosages. The estimated LD50 values for the parasitoids were much lower than recommended dosages for all pesticides except Thunder. This study, therefore, demonstrates that the pesticides currently used do not control the Liriomyza leafminer larvae that constitute the most destructive stage of the pest, but are rather detrimental to their parasitoids. In addition, the current low level of parasitoids recorded under field conditions even where no pesticide was used during this study, warrants consideration of classical biological control programs.
Susumu Tokumaru - One of the best experts on this subject based on the ideXlab platform.
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Primer design for identifying economically important Liriomyza species (Diptera: Agromyzidae) by multiplex PCR
Molecular ecology resources, 2012Co-Authors: Shigeo Nakamura, Toshio Masuda, Atsushi Mochizuki, Kazuhiko Konishi, Susumu Tokumaru, Keiichiro Ueno, Takuhiro YamaguchiAbstract:Leafminer flies, especially, Liriomyza huidobrensis, Liriomyza sativae and Liriomyza trifolii, are quarantine species in many countries. Their morphological similarity makes identification difficult. To develop a rapid, reliable, sensitive and simple molecular identification method using multiplex PCR, we newly sequenced the mitochondrial cytochrome oxidase I (COI) genes of Liriomyza bryoniae, Liriomyza chinensis, L. huidobrensis, L. sativae, L. trifolii, Chromatomyia horticola and four parasitoid species. We aligned them with all the COI sequences of the leafminer flies found in the international DNA nucleotide sequence databases (DDBJ/EMBL/GenBank). We then designed species-specific primers to allow us to differentiate between L. bryoniae, L. chinensis, L. huidobrensis, L. sativae, and L. trifolii.
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Displacement in two invasive species of leafminer fly in different localities
Biological Invasions, 2008Co-Authors: Yoshihisa Abe, Susumu TokumaruAbstract:Liriomyza sativae was displaced by L. trifolii in the USA probably due to the lower insecticide susceptibility of L. trifolii , but L. trifolii was displaced by L. sativae in Japan. To know the possible causes of the species displacement observed in Japan, differences in the insecticide susceptibility, fecundity, effects of natural enemies, and reproductive interference between L. trifolii and L. sativae were evaluated. As a result, the higher fecundity of L. sativae and differential effects of parasitoids on the two Liriomyza species are considered to be contributing factors.
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seasonal prevalence and species composition of Liriomyza sativae blanchard l trifolii burgess and l bryoniae kaltenbach diptera agromyzidae in kyoto prefecture
Applied Entomology and Zoology, 2007Co-Authors: Susumu Tokumaru, Yasuhiko Ando, Hideki Kurita, Yoshikimi Hayashida, Masahiro Ishiyama, Yoshihisa AbeAbstract:To document the relative abundance of Liriomyza sativae, L. trifolii, and L. bryoniae, the seasonal prevalence of three Liriomyza species infesting commercially grown tomato and cucumber plants was surveyed in four greenhouses in Kyoto Prefecture from 2000 to 2002. In tomato greenhouses, only L. bryoniae was found from April to July 2000 and 2002, but from August to December 2000 and 2002, L. sativae was predominant. Throughout 2001, L. sativae was predominant with a few L. bryoniae. In cucumber greenhouses, only a few L. bryoniae were found from April to June 2002. From August to November 2002, only L. sativae was found, except for one L. trifolii. Additionally, the species composition of the three Liriomyza species infesting commercially grown vegetable plants was occasionally surveyed by collecting full-grown larvae and pupae of Liriomyza found on the foliage of these plants at various locations in Kyoto Prefecture from 1997 to 2002. In 1997 and 1998, only L. trifolii or L. bryoniae was found. In 1999, L. sativae was also collected, but L. trifolii or L. bryoniae was predominant; however, from 2000 to 2002, L. sativae was predominant, and L. trifolii and L. bryoniae populations decreased suddenly.
Tong-xian Liu - One of the best experts on this subject based on the ideXlab platform.
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Hymenopteran Parasitoids and Their Role in Biological Control of Vegetable Liriomyza Leafminers
Recent Advances in Entomological Research, 2011Co-Authors: Tong-xian Liu, Le Kang, Zhongren Lei, Ricardo HernándezAbstract:Many Liriomyza leafminers are economically important pests of vegetables, ornamentals and field crops worldwide. At present, chemical insecticides are still the most common method for leafminer control worldwide. The effectiveness of these insecticides has been dogged by their indiscriminate use, impact on natural enemies and the development of resistance to several groups of insecticides and their natural enemies are eliminated by overuse and misuse of insecticides. Extensive investigations of natural enemies of Liriomyza have been conducted worldwide, and more than 150 species of hymenopteran parasitoids have been reported. Several species of parasitoids have been commercially mass-reared and used for biological control of some important Liriomyza species on ornamental and vegetable crops under protected environmental conditions. Conservation biological control promoting natural control and using biorational management strategies should be harmoniously integrated in leafminer management programs.
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Impact of insecticides on parasitoids of the leafminer, Liriomyza trifolii, in pepper in south Texas.
Journal of insect science (Online), 2011Co-Authors: Ricardo Hernández, Marvin K. Harris, Tong-xian LiuAbstract:Liriomyza leafminers (Diptera: Agromyzidae) are cosmopolitan, polyphagous pests of horticultural plants and many are resistant to insecticides. Producers in South Texas rely on insecticides as the primary management tool for leafminers, and several compounds are available. The objective of this study is to address the efficacy of these compounds for controlling Liriomyza while minimizing their effects against natural enemies. Research plots were established at Texas AgriLife research center at Weslaco, Texas in fall 2007 and spring 2008 seasons, and peppers were used as a model crop. Plots were sprayed with novaluron, abamectin, spinetoram, lambda-cyhalothrin and water as treatments according to leafminer infestation; insecticide efficacy was monitored by collecting leaves and infested foliage. Plant phenology was also monitored. Novaluron was the most effective insecticide and lambda-cyhalothrin showed resurgence in leafminer density in fall 2007 and no reduction in spring 2008. Other compounds varied in efficacy. Novaluron showed the least number of parasitoids per leafminer larva and the lowest parasitoid diversity index among treatments followed by spinetoram. Liriomyza trifolii (Burgess) was the sole leafminer species on peppers, and 19 parasitoid species were found associated with this leafminer. Application of these insecticides for management of leafminers with conservation of natural enemies is discussed.
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Biological control of Liriomyza leafminers: progress and perspective
Cab Reviews: Perspectives in Agriculture Veterinary Science Nutrition and Natural Resources, 2009Co-Authors: Tong-xian Liu, Le Kang, Kevin M. Heinz, John Trumble, E. HighwayAbstract:There are more than 330 Liriomyza species (Diptera: Agromyzidae) and many are economically important pests of field crops, ornamentals and vegetables. Given the substantial economic losses associated with various aspects of Liriomyza feeding as well as the ability of these insects to rapidly develop resistance to insecticides, researchers from many countries have attempted to use biological control to manage these pests. Unfortunately, progress on the science and implementation of effective Liriomyza biological control is hampered by the literature being scattered widely and in many different languages. A primary goal of this review is to consolidate the available information and provide an analysis of the published work. Investigations of natural enemies of Liriomyza have identified approximately 140 species of parasitoids, a few species of predators (including nematodes), and some entomopathogens. Some species of parasitoids and nematodes have been mass-reared and used for biological control of Liriomyza species under confined environmental conditions. While chemical control is still used extensively, conservation biological control and inoculative releases are being adopted as a primary strategy for Liriomyza suppression in select situations.
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Roles of thermal adaptation and chemical ecology in Liriomyza distribution and control.
Annual review of entomology, 2009Co-Authors: Le Kang, Bing Chen, Jianing Wei, Tong-xian LiuAbstract:Many Liriomyza species are pests of agricultural and ornamental plants. In the past two decades, the occurrence and distribution of certain Liriomyza species have changed dramatically, leading to an extensive body of research papers. First, we review the association of thermal tolerance with population dynamics, geographic distribution, and species displacement. Differences in thermal tolerances between species result in their differential geographic locations and overwintering ranges. Displacements among Liriomyza species are associated with their temperature adaptation. We examine the chemical linkage of plants, Liriomyza, and their parasitoids. Chemical compounds from host and nonhost plants mediate the behavior of Liriomyza and their parasitoids. Liriomyza and their parasitoids use chemical cues to locate their hosts. Induced compounds can be used as attractants of parasitoids or repellents of Liriomyza. Thus, understanding the thermal tolerances and chemical ecology of Liriomyza may enable researchers to predict geographic distribution and to develop novel control strategies.
Takuhiro Yamaguchi - One of the best experts on this subject based on the ideXlab platform.
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Primer design for identifying economically important Liriomyza species (Diptera: Agromyzidae) by multiplex PCR
Molecular ecology resources, 2012Co-Authors: Shigeo Nakamura, Toshio Masuda, Atsushi Mochizuki, Kazuhiko Konishi, Susumu Tokumaru, Keiichiro Ueno, Takuhiro YamaguchiAbstract:Leafminer flies, especially, Liriomyza huidobrensis, Liriomyza sativae and Liriomyza trifolii, are quarantine species in many countries. Their morphological similarity makes identification difficult. To develop a rapid, reliable, sensitive and simple molecular identification method using multiplex PCR, we newly sequenced the mitochondrial cytochrome oxidase I (COI) genes of Liriomyza bryoniae, Liriomyza chinensis, L. huidobrensis, L. sativae, L. trifolii, Chromatomyia horticola and four parasitoid species. We aligned them with all the COI sequences of the leafminer flies found in the international DNA nucleotide sequence databases (DDBJ/EMBL/GenBank). We then designed species-specific primers to allow us to differentiate between L. bryoniae, L. chinensis, L. huidobrensis, L. sativae, and L. trifolii.
