An Empirical Model for the Prediction of the Onset of Upward-Movement of Overwintered Caccopsylla pyricola (Homoptera: Psyllidae) in Pear Orchards

Kim, Dong‐Soon; Yang, Chang-Yeol; Jeon, Heung-Yong

doi:10.5532/kjafm.2007.9.4.228

Cited by 4 publications

(14 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously, the two east Palaearctic species C. burckhardti and C. jukyungi were misidentified as the west Palaearctic C. pyrisuga and C. pyricola , respectively (Paik, 1963; Kwon, 1983; Park, 1996; Kim et al ., 2000, 2007; Inoue, 2010; Kang et al ., 2012; Park et al ., 2013, 2016; Kwon et al ., 2016; Cho et al ., 2017). By including C. pyrisuga samples from central Europe in our analyses we show that the records and sequences of ‘ C. pyrisuga ’ from Japan (Katoh et al ., 2013) belong, in fact, to C. burckhardti which is also known from Korea.…”

Section: Discussionmentioning

confidence: 99%

DNA barcoding of pear psyllids (Hemiptera: Psylloidea: Psyllidae), a tale of continued misidentifications

Cho

Malenovský

Burckhardt³

et al. 2020

Bull. Entomol. Res.

View full text Add to dashboard Cite

AbstractPear psyllids (Hemiptera: Psylloidea: Psyllidae: Cacopsylla spp.) belong to the most serious pests of pear (Pyrus spp.). They damage pear trees by excessive removal of phloem sap, by soiling the fruits with honeydew which, in turn, provides a substrate for sooty mould, and by transmission of Candidatus Phytoplasma spp., the causal agents of the pear decline disease. The morphological similarity, the presence of seasonal dimorphism that affects adult colour, size and wing morphology and uncritical use of species names, led to much confusion in the taxonomy of pear psyllids. As a result, pear psyllids have been frequently misidentified. Many of the entries attributed to Cacopsylla pyricola and other species in the GenBank are misidentifications which led to additional, unnecessary confusion. Here we analysed DNA barcodes of 11 pear psyllid species from eastern Asia, Europe and Iran using four mitochondrial gene fragments (COI 658 bp, COI 403 bp, COI-tRNAleu-COII 580 bp and 16S rDNA 452 bp). The efficiency of identification was notably high and considerable barcoding gaps were observed in all markers. Our results confirm the synonymies of the seasonal forms of Cacopsylla jukyungi ( = C. cinereosignata, winter form) and C. maculatili ( = C. qiuzili, summer form) previously suggested based on morphology. Some previous misidentifications (C. chinensis from China, Japan and Korea = misidentification of C. jukyungi; C. pyricola and C. pyrisuga from East Asia = misidentification of C. jukyungi and C. burckhardti, respectively; C. pyricola from Iran = misidentification of C. bidens, C. pyri and Cacopsylla sp.) are also corrected. There is no evidence for the presence of European pear psyllid species in East Asia.

show abstract

Section: Discussionmentioning

confidence: 99%

DNA barcoding of pear psyllids (Hemiptera: Psylloidea: Psyllidae), a tale of continued misidentifications

Cho

Malenovský

Burckhardt³

et al. 2020

Bull. Entomol. Res.

View full text Add to dashboard Cite

show abstract

“…Pears rank fifth in production quantity and first in export quantity among fruits cultured in South Korea [1]. Cacopsylla jukyungi (Kwon, 1983) (Hemiptera: Psyllidae) [2] is the most damaging insect pest to commercial pears [3,4]. The species was once misidentified as C. pyricola (Foerster, 1848) [3,5,6] until Cho et al [7] corrected psyllid taxonomy.…”

Section: Introductionmentioning

confidence: 99%

“…Cacopsylla jukyungi (Kwon, 1983) (Hemiptera: Psyllidae) [2] is the most damaging insect pest to commercial pears [3,4]. The species was once misidentified as C. pyricola (Foerster, 1848) [3,5,6] until Cho et al [7] corrected psyllid taxonomy. C. jukyungi, which undergoes 4-5 generations a year [3,4] displays seasonal dimorphism, converting from a light-colored summer form to a dark overwintering winter form in late summer and autumn when the photoperiod shortens [8].…”

Section: Introductionmentioning

confidence: 99%

“…The species was once misidentified as C. pyricola (Foerster, 1848) [3,5,6] until Cho et al [7] corrected psyllid taxonomy. C. jukyungi, which undergoes 4-5 generations a year [3,4] displays seasonal dimorphism, converting from a light-colored summer form to a dark overwintering winter form in late summer and autumn when the photoperiod shortens [8]. In the late fall, C. jukyungi winter form adults move underneath coarse bark scales closer to the bottom of pear trees for overwintering, and during February and March of the subsequent year, the winter forms move upward to tree branches when daily maximum air temperature increases to a certain level [3,4,9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Population Genetic Characterization of the Pear Pest, Cacopsylla jukyungi (Kwon, 1983) (Hemiptera: Psyllidae), Using Novel Microsatellite Markers

Kang,

Park,

Kim

et al. 2023

Agronomy

View full text Add to dashboard Cite

The pear pest, Cacopsylla jukyungi (Hemiptera: Psyllidae), is the most damaging insect to commercial pears in South Korea. An assessment of the population genetic characteristics of the species will raise the potential of effective control. In the present study, we developed eight microsatellite markers specific to C. jukyungi and genotyped 132 individuals collected from 11 localities throughout South Korea. Populations showed lower observed heterozygosity than expected heterozygosity and slightly or highly positive values of inbreeding coefficients, suggesting that C. jukyungi is subjected to inbreeding. A strong dependence on commercial pear trees throughout the whole life cycle, even during overwintering, and a nationwide targeting of the overwintered adults are likely contributors to such heterozygosity deficiency. On the other hand, population analyses consistently indicated strong gene flow among populations, implying the presence of persistent factors that have facilitated this process. The nationwide expansion of pear orchards and the replacement with a popular new cultivar during the last 50 years, which may have accompanied the spread of C. jukyungi-bearing pear grafts and scions, are likely causes of such facilitated dispersal. Thus, a management strategy against unintended anthropogenic dispersal of the pear psyllid will be required for better control of C. jukyungi.

show abstract

“…Some of them were reported to be able to predict their incidence by combined consideration of environmental conditions including temperature. For example, about 80% of overwintered adult pear psylla, Cacopsylla pyricola Foerster (Hemiptera: Psyllidae), was reported to complete their climbing up to the pear tree branches from the overwintering coarse underneath bark when the days with daily maximum air temperature that is higher than 6 o C are accumulated to 12 days from 1 February (Kim et al, 2007). Thus, these days…”

Section: Introductionmentioning

confidence: 99%

Establishment of Pest Forecasting Management System for the Improvement of Pass Ratio of Korean Exporting Pears

Park¹,

Park²,

Kang³

et al. 2012

International Journal of Industrial Entomology

View full text Add to dashboard Cite

A decrease in pass ratio of Korean exporting pears causes several negative effects including an increase in pesticide dependency. In this study, we attempted to establish the pest forecasting management system, composed of weekly field forecasting by pear farmers, meteorological data obtained by automatic weather station (AWS), newly designed internet web page (http://pearpest.jnu.ac.kr/) as information collecting and providing ground, and information providing service. The weekly field forecasting information on major pear diseases and pests was collected from the forecasting team composed of five team leaders from each pear exporting complex. Further, an abridged weather information for the prediction of an infestation of major disease (pear scab) and pest (pear psylla and scale species) was obtained from an AWS installed at Bonghwang in Naju City. Such information was then promptly uploaded on the web page and also publicized to the pear famers specializing in export. We hope this pest forecasting management system increases the pass ratio of Korean exporting pears throughout establishment of famer-oriented forecasting, inspiring famers' effort for the prevention and forecasting of diseases and pests occurring at pear orchards.

show abstract

An Empirical Model for the Prediction of the Onset of Upward-Movement of Overwintered Caccopsylla pyricola (Homoptera: Psyllidae) in Pear Orchards

Cited by 4 publications

References 5 publications

DNA barcoding of pear psyllids (Hemiptera: Psylloidea: Psyllidae), a tale of continued misidentifications

DNA barcoding of pear psyllids (Hemiptera: Psylloidea: Psyllidae), a tale of continued misidentifications

Population Genetic Characterization of the Pear Pest, Cacopsylla jukyungi (Kwon, 1983) (Hemiptera: Psyllidae), Using Novel Microsatellite Markers

Establishment of Pest Forecasting Management System for the Improvement of Pass Ratio of Korean Exporting Pears

Contact Info

Product

Resources

About