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Bacterial communities of two populations of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)
Zare Banadkuki Shahnaz,Rahmani Shima,Bandani Ali R. 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.3
The tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is a highly destructive insect pest in Solanaceae, particularly in tomato crops. In this study, bacteria symbionts of eggs, the whole body, and different tissues of the fourth instar larvae of two populations, Rasht and Karaj, were isolated and identified. Using the 16S rRNA procedure, all symbiont bacteria, whether cultured or non-cultured, were classified at the phylum level as Proteobacteria and Firmicutes. BLASTn analyses revealed an overlap of Wolbachia, Enterobacter, Pseudomonas, Staphylococcus, and Acinetobacter genera in both populations. However, Bacillus subtilis, and Serratia marcescens were found only in Rasht, while Paenibacillus sp. and P. pasadenensis were identified solely in the Karaj population. Phylogenetic analysis of all bacterial sequences, except Wolbachia, revealed a distant evolutionary relationship between the leafminer’s symbionts and those of other lepidopterans. Thus, we could demonstrate the microbiota diversity of this insect pest across different locations. Furthermore, this research will provide insights for discovering new biorational control methods for T. absoluta based on the parasitic or mutualist symbionts.
Baucas, Nicasio S.,Joshi, Ravindra C.,Verzola, Elizabeth A.,Sacla, Geraldine L. 경상대학교 농업생명과학연구원 2003 농업생명과학연구 Vol.37 No.1
A survey was conducted from July 2000 to December 2001 to generate information on leafminer flies belonging to the family Agromyzidae, their host plants, and indigenous parasitoids in selected municipalities of the Cordillera, Philippines. Leaf samples of vegetable crops, ornamental plants, and weeds infested with leafminer flies were collected from the fields and reared in the laboratory for emergence of leafminer flies and parasitoids. We identified 26 vegetable crops and 19 ornamental plants and weeds that were infested by leafminer flies. Five leafminer flies species were identified. Four species belonged to genus Liriomyza and one species belonged to genus Chrotomyia. Their taxonomic identification were Liriomyza huidobrensis (Blanchard), Liriomyza trifolli (Burgess), Liriomyza satibae Blanchard, Liriomyza chinensis (Kato), and Chrotomyia horticola. The indigenous parasitoids identified were Asecodes delucchii (Boucek), Diglyphus isaea (Walker), Hemiptarsenus varicornis (Girault), Neochrysocharis formosa (Westwood), Neochrysocharis okazakii Kamijo, Pnigalio katonis (Ishii), Quadrastichus liriomyzae Hansson & LaSalle, Opius sp., and Zagrammosoma sp.
Jiwon Kim,Se Jin Kim,Dong-Hyuk Lee,Jong-Chul Nam,Wonsu Cheon 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
The apple leafminer moth, Phyllonorycter ringoniella Matsumura is known an important insect pest of apple. This study was conducted from 1992 to 2017 in the major apple producing districts in Gyeongbuk area including 4~6 cities (18~30 orchards), and examined the occurrence and damaged leaf (%) of leafminer at monthly interval in “Fuji” apple orchards. The damaged leaf was the highest in 1992 (5%), the gradually decreased until 2004, After damage rate was again increased until 2008, after which it decreased. Leaf damage was not significant between rootstocks including seedling rootstock, M.9, and M.26.
Lee Doo Hyung,Park Jung-Joon,Park Heungsun,Cho Kijong Korean Society of Applied Entomology 2005 Journal of Asia-Pacific Entomology Vol.8 No.1
This study was conducted to develop sequential sampling plans to estimate leafmine density by Liriomyza trifolii (Burgess) at three fixed-precision levels in commercial tomato greenhouses. The within-greenhouse spatial patterns of leafmines were aggregated. The slopes and intercepts of Taylor's power law did not differ between greenhouses and years. A fixed-precision level sampling plan was developed using the parameters of Taylor's power law generated from total number of leafmines in a tomato leaf (consisted of 7 leaflets) at three precision levels (D) of 0.20, 0.25, and 0.30. The resulting sampling plans were tested with sequential bootstrap simulations (n = 500) using 9 independent data sets for validation. Bootstrap simulation within a wide range of densities demonstrated that actual D' values at desired D = 0.30 averaged < 0.29 in all cases. Even at the lowest density of leafmine (0.16 mines per leaf), the actual mean D' value was 0.24 at D = 0.30. This result shows that the sampling plan developed in this study is effective and reliable for estimating the mine densities in tomato greenhouses.
Ji-won Jeong,Jinsol Hong,Taechul Park,SoEun Eom,Kimoon Son,Kijong Cho,Jung-Joon Park 한국응용곤충학회 2023 한국응용곤충학회 학술대회논문집 Vol.2023 No.10
Climate change and biological invasions are the greatest threats to biodiversity, agriculture, health and the global economy. Tomato leafminer(Tuta absoluta) (Meyrick) (Lepidoptera: Gelechiidae) is one of the most important threats to agriculture worldwide. This pest is characterized by rapid reproduction, strong dispersal ability, and highly overlapping of generations. Plants are damaged by direct feeding on leaves, stems, buds, calyces, young ripe fruits and by the invasion of secondary pathogens which enter through the wounds made by the pest. Since it invaded Spain in 2006, it has spread to Europe, the Mediterranean region, and, in 2010, to some countries in Central Asia and Southeast Asia. In East Asia, Tomato leafminer was first detected in China in Yili, Xinjiang Uygur Autonomous Region, in 2017. There is a possibility that this pest will invade South Korea as well. This study provides this by the use of MaxEnt algorithm for modelling the potential geographical distribution of Tomato Leafminer in South Korea Using presence-only data.
Hiroaki Sato,Natsuki Tabe 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.3
We describe a new leafminer, Phyllonorycter quintinipponicella Sato sp. nov. (Lepidoptera: Gracillariidae:Lithocolletinae), of an evergreen oak, Quercus phillyreoides A. Gray (Fagaceae), from Japan. This species istetravoltine, overwintering as larvae in mines without diapause. It belongs to the P. nipponicella complexassociated with oaks. As a result, this complex consists of five species (the others are P. acutissimae(Kumata), P. nipponicella (Issiki), P. similis Kumata, and P. persimilis Fujihara, Sato & Kumata), which arealmost indistinguishable from each other in appearance. Nevertheless, the new species can be sharplydistinguished from the others by the pupal cremaster as well as male genitalia, but not by the femalegenitalia. In addition, P. quintinipponicella larvae, unlike those of the other species, do not form the frassinto a pile but leave it loose in the mine. Molecular analysis based on sequences of mitochondrial cy tochrome c oxidase subunit I showed that the new species is genetically distinct from the others. Theirhost-plant ranges indicated that evolutionary divergence in the complex should be linked to that of hostoaks. Further genetic and ecological studies are needed to clarify the evolutionary history of theP. nipponicella complex in combination with oak divergence.
Shubao Geng,정철의 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.3
Asiatic apple leafminer, Phyllonorycter ringoniella (Matsumura), is an important insect pest of apple. Overwintering pupae were collected from the apple orchards on February 11, February 25, and March 15, 2016, respectively. The three cohorts were subjected to six constant temperatures (12.0, 15.0, 20.9, 26.1, 29.9, and 35.6 °C, RH 75 ± 5%) and further development into adults was studied. The developmental period decreased with increasing temperature up to 29.9 °C and no development occurred at high temperature (35.6 °C). The development period was longest at 12.0 °C (56.44 ± 2.72 days) and shortest at 29.9 °C (13.33 ± 1.65 days) from the second sampling colony (February 25, 2016). Based on the linear relationship between developmental rates and temperatures, the lower developmental threshold (LT) and thermal constant (K) of overwintering pupae were estimated to 7.06 °C and 307.6 DD, respectively. The nonlinear Logan-6 model provided good description of temperature-dependent development especially with high temperature inhibition (r2=0.99). The cumulative emergence of P. ringoniella from overwintering pupae was well described by the two-parameter Weibull function (r2=0.83) using the accumulated degree-days based on the LT 7.06 °C. This model was validated with actual spring emergence data in both semi-field and field conditions in 2015 and 2016. The model would be useful in predicting the spring emergence of P. ringoniella and establishing management tactics against P. ringoniella in apple orchards.
Rameswor Maharjan,Chuleui Jung 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.3
The development of Liriomyza huidobrensis (Blanchard), is an important pest of potato, was examined at six constant temperatures (10, 15, 20, 25, 27 and 30 °C) on kidney bean, Phaseolus vulgaris L. Results showed the temperature-related ecological niche of L. huidobrensis might be narrow. The total development period (egg to adult) decreased with increasing temperature from15–27 °C, although no egg hatched at 10 °C and no pupae survived at 30 °C. The linear model estimated the lower developmental threshold of eggs, larvae, pupae, and total immature stage as 10.17, 10.37, 9.08 and 9.64 °C, respectively, and the thermal requirement as 34.54, 65.51, 137.62 and 247.04 degree-days (DD), respectively. The development rates were fitted to Lactin's nonlinear model, and the lower, upper, and optimal temperatures for development were estimated as 9.8, 30.0 and 26.0 °C, respectively. Female sex ratio of the surviving individuals was 0.62. Thermal requirements and temperature thresholds can be used to forecast the occurrence, number of generations, and population dynamics of L. huidobrensis.
A new species of the genus Coptotriche (Lepidoptera: Tischeriidae) from Okinawa Island, Japan
김형규,Sadahisa Yagi,Shigeki Kobayashi,Toshiya Hirowatari 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.3
A new Symplocos trumpet leafminer, Coptotriche yanbarensis Kim & Yagi sp. nov., feeding on S. stellaris and S. okinawensis (Symplocaceae) is described from Okinawa Island, Japan. The new species is distin guishable from the Japanese Symplocos feeding described species, C. symplocosella Kobayashi & Hir owatari, 2016 by the forewing coloration, the shape of genitalia, and also DNA barcode.