One of a few species of psylla that have a black spot on the inside edge of the forewing, and it is generally larger than in the previously very rare but expanding c. Sucking of larvae and adults, when populations are high, can produce pustules on branchlets and spots skip to content. Behavior vibrational communication between the sexes in diaphorina citri hemiptera. Cacopsylla pyri behaviour on new pear selections for host. Psyllidae is one of the most economic insect in pear trees in egypt.
The species, which causes the most damage in central europe, is cacopsylla pyri. Management and control of insecticideresistant pear psylla. Click, drag, and drop to reorder files or press delete to remove any content you dont want. Pdf genetic mapping of cacopsylla pyri resistance in an. Stevia rebaudiana leaves are used as a zerocalorie natural sweetener in a variety of food products in asian countries, especially in japan. General information about cacopsylla pyri psylpi eppo global database. Continuing to use this website means you agree to our use of cookies.
The life cycle of pear decline phytoplasma in the vector cacopsylla pyri has been studied. Click add files and select the files you want to include in your pdf. You can merge pdfs or a mix of pdf documents and other files. Cacopsylla pyricola forster is one of the most important pests of pear in north america, where several native predators have been considered for integrated pest management ipm programmes. Characterization and quantification of hydroxycinnamate. These results support the hypothesis that eay, ap15, pd and aclr mlos are identical serologic. Opie indirect damage on pear sooty moulds developed on the honeydew excreted by nymphs to read this page in french. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Genetic analysis of resistance to azinphosmethyl in the pear psylla cacoppsylla pyri entomologica experimentalis et applicata, 96 159166. The effectiveness of spirotetramat in the control of pear psylla cacopsylla pyri on pear trees was investigated in five field experiments, carried out in years 20092011. Cacopsylla pyri, pear psylla, resistance, antiresistant strategies introduction psyllids are among the most serious pests in pear orchards, which have been intensively treated with pesticides. Highlights cacopsylla pyri and natural enemy abundance was compared in treated and nontreated pear orchards. Cacopsylla chinensik cacopsylla qianliyang and li, 10 chinensis li and yang, 081 92. Over a period of 1 year, about 100 psyllids were collected monthly.
Polyphenolic profile of pear leaves with different resistance. Recommendation of the working group on the annexes of the. The frequency of pear declinepositive insects and transmission of pear decline pd phytoplasma by cacopsylla pyri in spain has been studied. Opie adult feeding on the vein of a leaf of pear cacopsylla pyri l. The obtained results show for the first time the presence of substrateborne vibrational signals produced by males and females during courtship behavior in this species, and allow a direct comparison with signals of congeneric species cacopsylla pyri linnaeus, 1758 hemiptera. Polyphenolic profile of pear leaves with different. Geographic and seasonal variability of resistance to insecticides in cacopsylla pyri l.
Twentyfour hydroxycinnamic acid derivatives of quinic and shikimic acid were detected, and 19 of them. Cacopsylla pyri field trial mean number l1l3 on 10 marked shoots 3005 0 100 200 300 400 500 600 check tracer 480 sc, 144 g a. What links here related changes upload file special pages permanent link page information wikidata item cite this page. Phytoplasma pyri is transmitted by cacopsylla pyri and cacopsylla pyricola. Cacopsylla pyri eggs white and nymphs grey remaining per leaf in the control, and treatments with release of a two a. Psyllidae, is a key pest of pears throughout the world and may cause heavy economical. Cacopsylla pyri pdf general information about cacopsylla pyri psylpi. The pear psyllid, cacopsylla pyricola foerster hemiptera.
Controlling pear psyllids by mass releasing anthocoris. Substrateborne vibrational communication in the vector of. Intraguild predation among spiders and their effect on the pear psylla during winter. Over a period of 1 year, about 100 psyllids were collected monthly from pear trees, cv. Natural enemies numbers increased with time and were higher in nontreated orchards.
The genus includes most of the psylla harmful to fruit trees species. Zaroven je tento skudce hlavnim vektorem puvodce fytoplazmoveho. Download adobe acrobat reader free software to read pdf files. Identification of fruit tree phytoplasmas and their vector in bosnia and herzegovina eds.
This page was last edited on 11 december 2019, at 12. Psylla pyri, commonly known as the pear psylla or pear psyllid, is a true bug in the family. Effects of kaolin on some biological properties of pear sucker cacopsylla pyri l. Psyllidae, is one of the principal pests of pear pyrus spp. Metodika ochrany hrusni proti mere skvrnite cacopsylla pyri. Role of cacopsylla pyri in the epidemiology of pear decline. Raddadi n, gonella e, camerota c, pizzinat a, tedeschi r, crotti e, mandrioli m, bianco pa, daffonchio d, alma a 2010 candidatus liberibacter europaeus sp. Psylla pyrarboris slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This page was last edited on 1 december 2015, at 21. How to merge pdfs and combine pdf files adobe acrobat dc. For two con secutive years, groups of insects caught monthly from. Since proper control of this pest is essential, better understanding of the complex plantpest relationship is mandatory.
Psyllidae, is one of the most serious arthropod pests of pear. Liberibacter solanacearum in the canary islands and psyllid. Mera skvrnita cacopsylla pyrije klicovym skudcem v produkcnich hrusnovych vysadbach po cele evrope bangels et al. Recent work has shown, however, that different populations with different transmission capacities might exist for. The past and present of pear protection against the pear psylla, cacopsylla pyri l. High population densities can cause premature leaf drop, which results in reduced flowering the following year. Abundance and population dynamics of cacopsylla pyri. We do not use these to store personal information about you. Cacopsylla is a genus of bugs in the psyllidae family, the jumping plant lice. Psylla pyri damages pear trees by sucking the plant sap. Psyllidae on two resistant pyrus genotypes find, read and cite all the.
Given that mating rates in some psyllid species are reduced when held in darkness krysan 1990, wenninger and. Opie young nymphs a few yellow eggs as well as droplets of honeydew can be seen arrowed cacopsylla pyri l. In this study, the hydroxycinnamate derivatives of s. Dec 10, 2019 the obtained results show for the first time the presence of substrateborne vibrational signals produced by males and females during courtship behavior in this species, and allow a direct comparison with signals of congeneric species cacopsylla pyri linnaeus, 1758 hemiptera. Role of cacopsylla pyri in the epidemiology of pear decline in spain. Ants, spiders and pilophorus gallicus were the main predators. Cacopsylla pyri psylpioverview eppo global database. The response of 160 european pear genotypes to the attacks of cacopsylla pyri in natural conditions of infestation was studied in the ex situ germplasm collection of the ivalsa institute cnr located in follonica grosseto, italy during three. Vector species are present and widespread in most countries of the european union and readily spread the disease within an orchard and to orchards in the close vicinity, if infested planting material is introduced.
Testing of alternative spray programs for controlling the. This research deals with constitutive polyphenolic profiles in leaves of 22 pear cultivars of diverse origin p. Behavior vibrational communication between the sexes in. Psyllidae cacopsylla is a large and difficult genus with genal cones and a pterostigma. Overwintering females begin to lay eggs as early as in midfebruary, and the period of oviposition usually extends into late april. Genetic mapping of cacopsylla pyri resistance in an interspecific pear pyrus spp. Pdf following the survey of the proposed and applied methods the washdown procedure has been evaluated to collect the pear psylla larvae cacopsylla. Retrieved 20 april this can sometimes lead to deformation of the leaves. Cacopsylla pyri, pear psylla, resistance, antiresistant strategies.
The effectiveness of spirotetramat in the control of pear psylla cacopsylla pyri on pear trees was investigated in five field experiments, carried out in years 2009. Documents about cacopsylla pyricola psylpc this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. The pest was recorded for the first time on pear trees, pyrus communis l. We compare sampling techniques and develop sampling methods for c. Identification key for the central european cacopsylla species. Psyllids were used for experiments on phytoplasma transmission both to healthy pyrus communis trees and to an artificial feeding medium. Tim belien department of zoology pcfruit vzw, belgium. Pdf measuring pear psylla population density cacopsylla pyri l. As these spiders belong to the same guild they can also disrupt. Within the anthocoridae, anthocoris nemoralis was able to respond to psylla outbreaks, with a stronger response when the outbreak was in summer than when it was in autumn. Opie winter eggs laid on the underside of a leaf of pear cacopsylla pyri l. The heteroptera, anthocoridae and miridae, were the predators whose populations were more related to the dynamics of cacopsylla pyri populations. These diseases cause severe growth abnormalities of pear trees.
The size of fruit is decreased and tree growth is diminished. Intraguild predation among spiders and their effect on the. Management and control of insecticideresistant pear psylla cacopsylla pyri franti sek kocourek and jitka stara research institute of crop production, drnovska 507 praha 16106, czech republic email. Psyllidae, in commercial orchards more effectively than other ladybird species nedve. One of a few species of cacop sylla that have a black spot on the inside edge of the forewing, but unlike c. Trials by cacopsylla pyri, collected from pear decline infected orchards in turkey. Cacopsylla is a large and difficult genus with genal cones and a pterostigma. Cacopsylla pyri, cacopsylla pyricola, and cacopsylla pruni, and also putative vectors like cacopsylla pyrisuga, cacopsylla bidens or cacopsylla affinis.
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