György Csóka

University of Sopron - Forest Research Institute

A sárgafarú darázscincér, Plagionotus detritus L. (Coleoptera: Cerambycidae) Európa nagy részén és a Közel-Keleten elterjedt cincérfaj. Munkánk fő célja a faj feromonkomponenseinek azo-nosítása volt, amelyek felhasználhatóak lehetnek egy feromon alapú monitoring rendszer kifejleszté-sére növényvédelmi céllal, azokon a területeken, ahol kártevőként...

1. A blend of longhorn beetle pheromones was tested as a generic attractant in a Central European oak forest. Overall, 20 cerambycid species totalling 1250 specimens were captured using two trap types. 2. More adults of Phymatodes testaceus and Leiopus nebulosus nebulosus were attracted to pheromone-baited traps compared to solvent controls. Signif...

Here we present an analysis of the nocturnal macro‑moth fauna in Répáshuta (Bükk National Park) based on the catches of a Jermy‑type automatic light‑trap between 2014‑2019. Over the six years, a total of 43,487 individuals of 488 species were caught by the trap. Species composition varied greatly between years, with a total of 141 species occurring...

International trade in plants and climate change are two of the main factors causing damaging tree pests (i.e. fungi and insects) to spread into new areas. To mitigate these risks, a large-scale assessment of tree-associated fungi and insects is needed. We present records of endophytic fungi and insects in twigs of 17 angiosperm and gymnosperm gene...

International trade in plants and climate change are two of the main factors causing damaging tree pests (i.e. fungi and insects) to spread into new areas. To mitigate these risks, a large-scale assessment of tree-associated fungi and insects is needed. We present records of endophytic fungi and insects in twigs of 17 angiosperm and gymnosperm gene...

Novel interactions between introduced oaks and their natural enemies across different continents provide an opportunity to test the enemy release hypothesis (ERH) at local and global scales. Based on the ERH, we assessed the impacts of native seed-feeding insects on introduced and native oaks within and among continents. We combined a common-garden...

The oak lace bug (OLB) Corythucha arcuata (Say, 1832) is an invasive alien species (IAS) that potentially could have many negative impacts on European oak health. Certain measures can be applied to counteract these effects. However, these measures may not be acceptable for forest managers or other stakeholder groups, such as private forest owners,...

(1) Background: The principal aim of our work was to identify pheromone components for Plagionotus detritus (L.) (Coleoptera: Cerambycidae), which could be exploited for developing a pheromone-based monitoring system for the complementary purposes of plant protection in areas where it might become a pest, and natural conservation in areas where it...

Numerous recent studies report an alarming decrease in diversity, biomass, or abundance of arthropods in various habitats. Given that they are important food for other organisms, the ecological consequences of such a decline could be severe. We used data from the Hungarian Forestry Light Trap Network to examine whether the spring caterpillar biomas...

The oak lace bug (Corythucha arcuata, Say 1832) is a new invasive sap-sucking species in the European oak forests that was first recorded in Central Europe in 2013. It invaded the region from Southeastern Europe, spreads rapidly, and shows no signs of receding after establishment. In this study, focusing on the oak forests in the transboundary area...

A tölgylisztharmat (Erisyphe spp.) a tölgyek (különösen a kocsányos tölgy) erdész szakma által jól ismert kórokozója. Az európai növénykórtan és erdészettudomány is hatalmas tudást halmozott már fel arról, hogy milyen károkat képes okozni csemetekertekben, tarvágás vagy fokozatos felújító vágást követõ felújításokban, pótlá- sokban vagy éppen fiata...

The North American oak lace bug (Corythucha arcuata) was first discovered in Europe (Norhern Italy) in 2000. It started a rapid area expansion in the last decade and has been reported in 20 countries so far. Almost all European oaks are suitable hosts. On top of the host availability, abiotic factors like weather/climate may also have a decisive im...

Az eddigi ismereteink nagy része a díszbogarak tájékozódásáról és kommunikációjáról az ázsiai kőrisrontó karcsúdíszbogár (Agrilus planipennis) kutatásával elért eredményekből származik, amely mostanra erdőkben és városi parkokban egyaránt az egyik legpusztítóbb inváziós kártevővé vált Észak-Amerikában és Oroszországban is. Európai nézőpontból az A....

Introduced pathogen microorganisms are important drivers of ecosystem change. This paper highlights the impact of the non-native pathogen mildew multi-species complex on the natural regeneration dynamics of pedunculate oak (Quercus robur). Pedunculate oak is a European keystone tree species, hosting a great amount of biodiversity, but its future ro...

Aim The strength of species interactions is traditionally expected to increase toward the Equator. However, recent studies have reported opposite or inconsistent latitudinal trends in the bottom‐up (plant quality) and top‐down (natural enemies) forces driving herbivory. In addition, these forces have rarely been studied together thus limiting previ...

The influence of meteorological parameters on the health status of beech (Fagus sylvatica L.) was analyzed using long term datasets (1989-2010) collected in 15 sample plots located in Hungary’s main beech regions. Leaf loss values were correlated with different meteorological parameters as explanatory variables. Analysis was performed by the CReMIT...

The North American oak lace bug (OLB, Corythucha arcuata) was first found in Europe in northern Italy in 2000, and up to 2019 it was recorded in 20 countries. Almost all Eurasian deciduous oak species are suitable hosts and the species can also feed on many other woody plants. At least 30 million hectares of oak forests provide suitable hosts for t...

Invasive alien species (IAS) are an important threat to forests. One of the best ways to manage potential IAS is through early detection and rapid response (EDRR) strategies. However, when dealing with IAS in forests, EU regulations are divided between phytosanitary regulations and IAS regulations. A version of EDRR for the former has been in place...

The known species richness of oak gallwasps in Asia has increased tremendously in the past decade. However, the vast majority of taxa have been described from the east coast of Asia, and knowledge of oak gallwasps from Central Asia is still scant. Here we use molecular and morphological characters to describe a new genus of cynipid oak gallwasp, He...

Az észak-amerikai származású tölgy-csipkéspoloskát Európában először 2000-ben, Észak- Olaszországban észlelték. Hazánkban 2013-ban, a Szarvasi Arborétumban azonosították. Az azóta eltelt hat évben gyorsan terjeszkedett. 2019 őszére már Magyarország összes megyéjéből előkerült, több megyében már nagyterületű, állományszintű tömeges fellépését is ész...

Scientific knowledge in the field of ecology is increasingly enriched by data acquired by the general public participating in citizen science (CS) programs. Yet, doubts remain about the reliability of such data, in particular when acquired by schoolchildren. We built upon an ongoing CS program, 'Oak Bodyguards', to assess the ability of schoolchild...

Aim The strength of species interactions is traditionally expected to become stronger toward the Equator. However, recent studies have reported opposite or inconsistent latitudinal trends in the bottom-up (plant quality) and top-down (natural enemies) forces driving insect herbivory, possibly because these forces have rarely been studied concomitan...

Most of the current understanding of the orientation and communication of jewel beetles arose fromresearch on the Asian emerald ash borer (EAB), Agrilus planipennis, which has become one of the most destructive invasive forest insect pests in history following its introduction to North America and European Russia. From a European perspective, a num...

A 2017. április 19-i bükki hótörés és széldöntés nyomán 4409 hektáron keletkezett erdőkár. A kala-mitás leginkább az 500-600 m tszfm. régióban éreztette hatását. Ebben a magasságban vizsgáltuk a Bükk-hegységet sújtó károsodást távérzékelési módszerekkel, MODIS és Sentinel-2 műholdképeken, majd összehasonlítottuk az eredményeket az erdővédelmi kárbe...

Most of the current understanding of the orientation and communication of jewel beetles arose from research on the Asian emerald ash borer (EAB), Agrilus planipennis, which has become one of the most destructive invasive forest insect pests in history following its introduction to North America and European Russia. Based on research using this spec...

The box tree moth, Cydalima perspectalis (Lepidoptera: Crambidae), is native to East Asia and was introduced in Europe more than a decade ago. It causes severe damage to box trees (Buxus spp.) in both urban and natural habitats. The occurrence of this invasive pest in southeastern Europe has not been documented in a comprehensive way yet. The main...

Aprostocetus eriophyes (Taylor, 1909) (Hymenoptera: Eulophidae) is reported as new to the Hungarian fauna. Female specimens were reared from galls of the hazelnut big bud mite (Phytoptus avellanae Nalepa, 1889) (Phytoptidae) collected in February to April 2017 at six different locations in Hungary. Diagnosis, hosts, biology and distribution of A. e...

Kivonat Az erdei vöröshangyák generalista ragadozók. Tömegesen zsákmányolnak különféle herbivor rovarokat, miáltal jelentősen csökkenthetik azok népességét. Az erdei vöröshangya fajok táplálékukat elsősorban a fák lombkoronájában szerzik, ezáltal a lombfogyasztó rovarok számát hatékonyan csökkenthetik. Az európai irodalom meglehetősen tág határokat...

The North American oak lace bug feeds on leaves of ‘white oaks” in its native range. In Europe, it was first discovered in northern Italy in 2000. In recent years, it has subsequently spread rapidly and population outbreaks have been observed in several European countries. In the present study, we summarize the steps of its expansion. To predict it...

V tejto knihe nájdete najhojnejšie a najnápadnejšie druhy hmyzu a húb, ktoré škodia v našich lesoch. Kniha je druhým, doplneným vydaním úspešnej publikácie, ktorá vyšla v roku 2008 a získala veľkú obľubu v lesníckych aj nelesníckych kruhoch. Pôvodný obsiahly, detailný a bohato ilustrovaný atlas bol doplnený o niektoré nové druhy, ktoré v posledných...

Cover pages of the book

Pictures of the book

Selected invertebrate groups of the landscape protected area of Sopron-mts including Collembola, Arachnoidea, Orthoptera, Ephemeroptera, Plecoptera, Odonata and other aquatic invertebrates, Macrolepidoptera, Coleoptera (xilofag and saproxil groups), gall inducing insects with general descriptions and praeface

Landscape Protected Area of Sopron-mts. - Monographic studies of the natural and cultural values of the Sopron-mountains

Scientific knowledge in the field of ecology is increasingly enriched by data acquired by the general public participating in citizen science (CS) programs. Yet, doubts remain about the reliability of such data, in particular when acquired by school children. We built upon an ongoing CS program - Oak bodyguards - to assess the ability of European s...

Aceria fraxiniflora (Felt, 1906) is reported from Europe for the first time. This mite has never been described before and we therefore describe and illustrate the female and the nymph. The species was collected from the galled inflorescences and fruits of the introduced species Fraxinus pennsylvanica Marshall (Oleaceae) in Hungary, and from Fraxin...

Entomophaga maimaiga is an important host-specific fungal pathogen of gypsy moth larvae in North America. In 1999, this entomopathogenic fungus was successfully introduced into Bulgaria. At present, it is spreading fast in southeastern and central Europe. It has been recorded from Serbia, Greece, Macedonia, Romania, Hungary, Slovakia, and the Czech...

Kivonat Az 1962-2011 közötti 50 évben Magyarországon az aszályok gyakorisága nőtt. A növekvő trenden túl az időszak máso-dik felében a kifejezetten extrém aszályok is egyre gyakoribbá váltak. Ezzel szoros összefüggésben jelentősen növeked-tek az erdeinkben bekövetkező aszálykárok is. Az évente bejelentett aszálykárok rendkívül szoros, szignifikáns...

A rovarok és környezetük kapcsolata rendkívül szoros, ezért ha abban-például a klímaváltozás miatt-a legkisebb változás is bekövetkezik, arra érzékenyen reagálnak. Ez a reakció igen változatos lehet. Megváltozhat elterjedési területük, megváltozhat fejlődési idejük és ezen keresztül a generációs viszonyaik, illetve a populáció nagyságát befolyásoló...

Climate change particularly threatens the xeric limits of temperate-continental forests. In Hungary, annual temperatures have increased by 1.2 °C-1.8 °C in the last 30 years and the frequency of extreme droughts has grown. With the aim to gain stand-level prospects of sustainability, we have used local forest site variables to identify and project...

Population fluctuations of the well-known oak defoliator, the oak processionary moth (Thaumetopoea processionea L.), were studied using light trap data and basic meteorological parameters (monthly average temperatures, and precipitation) at three locations in Western Hungary over a period of 15 years (1988-2012). The fluctuations in the numbers cau...

We evaluated the presence and impact of Entomophaga maimaiga on both target and non-target phytophagous larvae. All six study plots, with low gypsy moth population density, were situated in Central and Southeastern European oak forests and E. maimaiga had previously been reported from these plots. Totally, 45 of 4,045 (1.13%) collected non-target l...

1. Studies of transient population dynamics have largely focused on temporal changes in dynamical behavior, such as the transition between periods of stability and instability. The present study explores a related dynamic pattern, namely transient synchrony during a 49-year period among populations of five sympatric species of forest insects that s...

Authors made regular insect collections between 2010 and 2017, especially on ornamental trees and shrubs, on streets, parks, in city greenery, forests, botanical gardens and private gardens, in various localities of Hungary. Trioza soniae Rapisarda, 1994 and Trioza scottii L, 1880 are reported for the first time in Hungary. New host, locality and h...

Kivonat Az észak-amerikai tölgy csipkéspoloskát (Corythucha arcuata) Európában először Észak-Olaszországban észlelték (2000). Magyarországon 2013-ban találták meg, az azóta eltelt öt évben, különösen pedig 2016-ban és 2017-ben gyors terjeszke-dést mutatott. 2017 őszéig öt kivételével (Borsod-Abaúj-Zemplén, Nógrád; Győr-Moson-Sopron, Vas és Veszprém...

Bird predation on gypsy moth Lymantria dispar L. (Lepidoptera Erebidae) egg masses may have a significant role in the gypsy moth population regulation; therefore the understanding of this process is a key issue to prevent large scale damage. In this paper, we aimed to quantify the winter predation of egg masses by birds and to reveal what factors a...

Gall-inducing insects cause the development of specialised plant tissues (galls) that provide them with nutrition and some measure of protection from physical and biotic stresses. Their interaction with the plant is the most intimate metabolically of any herbivore group and is often associated with high host specificity. We survey the gall inducers...

Approximate Bayesian computation (ABC) is a powerful and widely used approach in inference of population history. However, the computational effort required to discriminate among alternative historical scenarios often limits the set that is compared to those considered more likely a priori. While often justifiable, this approach will fail to consid...

This guide is intended as an aid for managers of sentinel plantings, botanical gardens or arboreta, as well as phytosanitary inspectors, who may have knowledge of common pests and diseases of woody plants, but may not know the likely cause of damage that they have not encountered before. It aims to provide a tentative identification of relatively b...

This guide is intended as an aid for managers of sentinel plantings, botanical gardens or arboreta, as well as phytosanitary inspectors, who may have knowledge of common pests and diseases of woody plants, but may not know the likely cause of damage that they have not encountered before. It aims to provide a tentative identification of relatively b...

This guide is intended as an aid for managers of sentinel plantings, botanical gardens or arboreta, as well as phytosanitary inspectors, who may have knowledge of common pests and diseases of woody plants, but may not know the likely cause of damage that they have not encountered before. It aims to provide a tentative identification of relatively b...

This guide is intended as an aid for managers of sentinel plantings, botanical gardens or arboreta, as well as phytosanitary inspectors, who may have knowledge of common pests and diseases of woody plants, but may not know the likely cause of damage that they have not encountered before. It aims to provide a tentative identification of relatively b...

As global biodiversity continues to decline steeply, it is becoming increasingly important to understand diversity patterns at local and regional scales. Changes in land use and climate, nitrogen deposition and invasive species are the most important threats to global biodiversity. Because land use changes tend to benefit a few species but impede m...