Contributions to the knowledge of conifer aphid fauna in Turkey and their zoogeographical distribution

The Aphidoidea (Homoptera) has 29 species which attack coniferous trees in Turkey. The family Aphididae has 25 (Aphidinae, 1; Lachninae, 22; Mindarinae, 2) species and the Adelgidae, 4. The tribe Cinarini in Lachninae has alone 22 species most of which are important. Especially Cinara cedri Mimeur on Cedrus libani and C. pilicornis (Hartig) on Picea spp. are harmful species. Schizolachnus pineti (Fabricius) is also very important. An Eastern Palearctic species in the tribe Macrosiphini in Aphidinae, Elatobium momii (Shinji), is numerous on Abies bornmülleriana in Bursa-Uluda forests. Pineus orientalis (Dreyfus) in the family of Adelgidae (Chermesidae) is the most destructive in our Picea orientalis forests in Artvin area (Eastern Black-Sea Section). 21 species out of 29 aphids on coniferous trees are of European origin; only 4 are Mediterranean, 2 Caucasus and Turkistan, one Eastern Palearctic and one of Cosmopolitan origin.     

Contributions to the leafminer fauna (Diptera: Agromyzidae) from Turkey, with four new records

In a study carried out during 2002 and 2004 in Diyarbakıir and Mardin provinces, southeast Turkey, specimens were collected twice a month from cultivated and non-cultivated plants. Sixteen leafminer (Diptera: Agromyzidae) species were identified. Among them,Agromyza abiens Zetterstedt, 1848;Napomyza elegans (Meigen, 1830);Phytoliriomyza dorsata (Siebke, 1864); andPhytomyza aquilonia Frey, 1964 are new records for the Turkish leafminer http://www.phytoparasitica.org posting July 24, 2005.     

麦蚜混合种群田间动态分布及空间分布型

本文基于田间系统调查的基础上，对麦蚜种群田间动态分布及空间分布型方面进行探讨，通过曲线图形象地显示麦蚜在麦株不同部位不同时期的种群变化，并进一步用Lloyd提出的聚集指标m^*／m及lwao的m^*-m线性回归关系式法，测定麦蚜分布格局的内在结构，阐明了麦蚜种群空间分布为聚集分布，且个体间存在相互吸引的关系，为准确地预测预报提供理论依据。     

Employing pheromone traps to establish the distribution and seasonal activity of Theresimima ampellophaga in Turkey

The vine bud moth, Theresimima ampellophaga (Bayle-Barelle 1808) (Lepidoptera: Zygaenidae; Procridinae), is a pest on grape vine, Vitis vinifera (L.), and on the ornamental vine Parthenocissus quinquefolia (L.) and other Parthenocissus species. Its recent distribution in Europe is relatively well known, but there is a paucity of locality data for Turkey. As a consequence, we began a large-scale investigation into its distribution and seasonal activity in this country in 2008. The main tools for these investigations were pheromone traps that were baited with the synthetic pheromone of the species, viz. (2R)-butyl (Z7)-tetradecenoate. As a result of field work carried out in the eastern Mediterranean region of Turkey in 2008 and 2009, Th. ampellophaga was recorded in five provinces, viz. Adana, Mersin, Hatay, Kahramanmara? and Kilis. The only province where the pest was not found was Gaziantep. Theresimima ampellophaga produces one or two generations per year, depending on the local conditions and other unknown factors. The moths of the first generation fly in June, while those of the second generation occur in August. To the best of our knowledge the present paper provides the first well-documented evidence of the occurrence of a second generation of the vine bud moth in Turkey.     

Aelia Species and their Economic Importance in Turkey

The commonest and most important species of Aelia in Turkey is A. rostrata. It is a primary pest, especially in Central Anatolia. Two other species, namely A. acuminate and A. syriaca , are secondary pests which damage wheat to some extent. The other species so far known from Turkey are of minor importance.     

Primary studies on the parasitoid fauna of Coccoidea in cultivated and non-cultivated areas in the east Mediterranean region of Turkey

The parasitoid fauna of Coccoidea in cultivated and noncultivated areas was studied in the east Mediterranean region of Turkey in 1994–1997. In total, 25 parasitoid species belonging to Aphelinidae, Encyrtidae, and Eulophidae (Hymenoptera) were reared from 21 different scale hosts. On crop plants, mainly citrus and peach, 13 parasitoids from eleven Coccoidea hosts were determined while 14 parasitoid species were obtained from twelve scale insects on non-cultivated plants. Seven parasitoid species are new records for the Turkish insect fauna. Only one of them was found on citrus, while the other six species were sampled in non-cultivated areas. The most common parasitoids encountered wereAphytis melinus DeBach,Encarsia berlesei (Howard) (Aphelinidae),comperiella bifasciata Howard (Encyrtidae), andMetaphycus flavus (Howard) (Eulophidae) in cultivated areas andCoccophagus lycimnia (Walker) (Aphelinidae) in non-cultivated areas. All other parasitoids species were obtained only from a few scale insects hosts.

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Erste Untersuchungen zur Parasitoiden-Fauna der Coccoidea in landwirtschaftlich genutzten und nicht genutzten Gebieten der ?stlichen Mittelmeer-Region der Türkei

Zusammenfassung  In der vorliegenden Arbeit wurde die Parasitoiden-Fauna der Coccoidea in landwirtschaftlich genutzten und nicht genutzten Gebieten der ?stlichen Mittelmeer-Region der Türkei in der Zeit von 1994–1997 untersucht. Insgesamt konnten 25 Parasitoiden-Arten aus den Familien Aphelinidae, Encyrtidae und Eulophidae (Hymenoptera) aus 21 verschiedenen Schildlaus-Wirten gezogen werden. Von den Kulturpflanzen, vor allem von Zitrus und Pfirsich, wurden 13 Parasitoide aus 11 Coccoidea-Wirten gewonnen, w?hrend 14 Parasitoiden-Arten aus 12 Schildlaus-Wirten von den Wildpflanzen stammten. Bei sieben Parasitoiden-Arten handelt es sich um Neubeschreibungen der türkischen Insektenfauna. Nur eine von diesen wurde auf Zitrus beobachtet, w?hrend die anderen sechs Arten aus nicht bewirtschafteten Gebieten stammten. Die gel?ufigsten der ermittelten Parasitoiden-Arten warenAphytis melinus DeBach,Encarsia berlesei (Howard) (Aphelinidae),Comperiella bifasciata Howard (Encyrtidae) sowieMetaphycus flavus (Howard) (Eulophidae) auf den bewirtschafteten undCoccophagus lycimnia (Walker) (Aphelinidae) auf den nicht bewirtschafteten Fl?chen. Alle anderen Parasitoiden-Arten wurden auf nur wenigen Schildlaus-Wirten beobachtet.

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The paper was gratefully dedicated to Prof. Dr. Niyazi Lodos.     

Investigation of threatened arable weeds and their conservation status in Turkey

Agronomic operations carried out in arable lands may cause changes in weed populations and also decrease the number of animal species that depend on these weed species. An emerging paradigm is the conservation and sustainability of weed species. In this study, risk status of arable weeds in Turkey was evaluated and it was determined that 112 of them (76 endemic and 36 non-endemic species) were at risk according to the IUCN Red List. Turkey is extremely diverse, with over 3000 endemic plant species out of nearly 12 000 recorded. Considering endemic weeds, they are classified in the following risk categories: critically endangered (four weed species), endangered (EN) (six), vulnerable (VU) (14), near threatened (seven), least concern (41) and data deficient (DD) (four species). Among the non-endemic weeds, three species are EN, 31 VU and two are DD. The families with the highest threatened weed species are Scrophulariaceae, Fabaceae, Asteraceae, Brassicaceae and Lamiaceae. The identification of weed species in arable habitats and their risk status is a useful tool for assessing and monitoring how the sustainability of weed populations is affected by farming practices. The results show the necessity of adopting new environment-friendly agricultural methods to conserve the high number of endemic weed species under threat in Turkey.     

The characteristics of mineral oils in relation to their inhibitory activity on the aphid transmission of potato virus Y

In greenhouse trials paraffinic mineral oils, characterized by a viscosity gravity constant (VGC) of 0.790–0.819, and with viscosities between 12 and 30 cSt at 37°C (66–150 SUS) proved to have the best aphid transmission inhibiting activity of potato virus Y to red peppers. The activity decreased rapidly with decreasing viscosities but only slowly with increasing values.Effective oils are further characterized by an unsulfonated residue (USR) of 95–100, indicating the near or total absence of aromatic structures, which are inactive and known to be phytotoxic. The paraffine-pourpoint should be below 0°C, indicating that n-paraffines do not form a very important part of the oil, since they are also inactive. Naphthenic structures seem equally inert, their percentage in the oil depending on the origin of the crude oil, because they cannot be separated from the paraffinic structures by refining procedures.Mineral oils which one commercialize for agricultural practice normally have an USR above 95 and a paraffine-pourpoint below 0°C. Therefore, the information on the classification, based on a VGC value and on the viscosity, is already sufficient to allow an evaluation of those oils of their suitability as inhibitor of the virus transmission by aphids.Samenvatting In kasproeven bleken minerale paraffine oliën, gekenmerkt door een VGC (viscositeits-dichtheidsconstante) van 0.790–0.819 en een viscositeit tussen 12 en 30 cSt bij 37°C (66–150 SUS) de beste werking te bezitten tegen de overdracht van aardappelvirus Y naar paprika door bladluizen. De werking verminderde snel bij afnemende viscositeiten beneden 12 cSt, slechts langzaam bij toenemende waarden boven 30 cSt.De minerale olie met de meest gunstige eigenschappen met betrekking tot verhindering van de virusoverdracht wordt verder nog gekenmerkt door een USR (nier-sulfoneerbare rest) van 95–100. Dit betekent het geheel of bijna geheel afwezig zijn van aromatische verbindingen, die bekend zijn om hun fytotoxische eigenschappen en bovendien niet werkzaam zijn. Het stollingspunt moet bij voorkeur onder 0°C liggen wat betekent dat n-paraffinen geen al te belangrijk bestanddeel van de olie vormen, aangezien deze eveneens onwerkzaam zijn. Naphthenische structuren bleken ook onwerkzaam te zijn. Het gehalte hiervan in de oliefractie hangt echter van de herkomst van de ruwe olie of, omdat ze niet door raffineren van de paraffinestructuren kunnen worden gescheiden.Minerale oliën die aanbevolen worden voor landbouwkundige doeleinden, bezitten normalerwijze een USR boven 95 en een stollingspunt onder 0°C. Dit betekent dat informatie over de aard der oliën op grond van een VGC waarde en over de viscositeit voldoende is om dergelijke oliën te beoordelen op hun geschiktheid de virusoverdracht door bladluizen te kunnen verhinderen.     

Contribution to the knowledge of the family Eulophidae (Hymenoptera: Chalcidoidea) from Turkey,with some new records

Data are presented on the occurrence of 51 species of the family Eulophidae in Turkey based on material obtained mainly from grass and leaves with leaf miners. The paper combines the faunistic and distributional data obtained from recent studies with all other species of the family known from Turkey up to now. The recorded genera (with the number of recorded species) are:Aprostocetus Westwood (20),Baryscapus Förster (8),Cirrospilus Westwood (2),Diglyphus Walker (5),Hyssopus Girault (2),Euplectrus Westwood (1),Hemiptarsenus Westwood (3),Necremnus Thomson (3),Pnigalio Schrank (2),Pronotalia Gradwell (1) andSympiesis Förster (4). Twenty-eight species are reported for the first time in the Turkish fauna.     

A survey of aphid parasitoids in Kahramanmaras,Turkey (Hymenoptera: Braconidae,Aphidiinae; and Hymenoptera: Aphelinidae)

A list of aphid parasitoids found in a survey conducted between 1999 and 2001 in Kahramanmaras Province of Turkey is presented. Nineteen taxa of aphid parasitoids were found on 30 hosts.Pauesia picta (Haliday) is reported for the first time from Turkey. Two check-lists are presented, by host aphids and by plant species. http://www.phytoparasitica.org posting April 30, 2004.     

Comparison ofPotato Virus Y andPlum Pox Virus transmission by two aphid species in relation to their probing behavior

Two different aphid species,Myzus persicae (Sulzer) andHyalopterus pruni (Geoffroy) (Homoptera: Aphididae), were used to analyze their ability to transmit two different potyviruses,Potato virus Y (PVY) andPlum pox virus (PPV), to pepper (Capsicum annuum) andNicotiana benthamiana plants, respectively. In parallel experiments,M. persicae consistently transmitted both viruses with high efficiency, whereasH. pruni always failed to transmit either virus. This is in contrast to previous reports describingH. pruni as a vector of these potyviruses. Different aphid probing behavior among individual aphids of each species was obtained in electrical penetration graph (EPG) experiments performed on pepper plants. This suggested thatH. pruni did not transmit these potyviruses due to behavioral differences during probing that impeded virus acquisition and/or inoculation. It was found thatM. persicae usually makes its first probe within the first 2 min, whereasH. pruni individuals remained for more than 10 min on the plant before starting to probe. Furthermore,M. persicae individuals displayed their first intracellular puncture during the first minute of probing whereasH. pruni needed ∼ 15 min to penetrate the cell plasmalemma with their stylets. In addition, intracellular stylet punctures occurred very frequently forM. persicae but was a rare event, never exceeding a single one, forH. pruni. The relevance of these findings for the epidemiological spread of potyviruses by different aphid species is discussed. http://www.phytoparasitica.org posting May 14, 2006.     

针叶类木质包装热浸泡处理试验

为摸索木材热浸泡处理方法,分别用56℃、66℃、76℃的恒温水浴浸泡木段,检测其中心温度,当水浴温度76℃,持续处理时间2h时,直径10cm供试松木中心温度能保持56℃以上30min;水浴52℃条件下,供试松材线虫在5min内被100%杀死.     

Contribution of uneven distribution of genomic RNA variants of citrus tristeza virus (CTV) within the plant to changes in the viral population following aphid transmission

The population of genomic RNA sequence variants of citrus tristeza virus (CTV) isolates was characterized by single-strand conformation polymorphism (SSCP) analysis of complementary DNA (cDNA) of the genes p18 and p20. Comparison of field and aphid-transmitted isolates showed that aphid transmission frequently altered the single-strand conformation polymorphism (SSCP) pattern of both genes, indicating changes in the population of genomic RNA variants. SSCP analysis of the cDNA of RNA extracted from small pieces of tissue sampled at different sites of the same plant sometimes yielded different patterns, indicating uneven distribution of the genomic RNA variants within the infected plant. Different SSCP patterns were also obtained when the RNA extracted from individual aphids probing in the same infected leaf was used as a template. Uneven distribution of the genomic RNA variants within the infected plant and sorting of some of these variants by individual aphids probably contribute to changes observed in the CTV population following aphid transmission.     

Additions to rust and smut fungi of Turkey

Entyloma linariae Schroet., Entyloma magocsyanum Bub., Uromyces arenariae–grandiflorae Mayor and Uromyces arenariae–leptoclados Vien.-Bourg. are reported for the first time from Anatolia. Additionally, Arenaria leptoclados (Rchb.) Guss. is recorded as a new host for Melampsorella caryophyllacearum Schroet. in the region.     

Susceptibility of conifer and broadleaf seedlings to Swedish S and P strains of Heterobasidion annosum

Seeldings of conifer and broadleaf species, 2-4 years old, were inoculated with 10 Swedish S and P intersterility group strains of Heterobasidion annosum under greenhouse conditions. There were significant differences in infection incidence, growth in sapwood and mortality rates. Conifers were generally more susceptible to infection than broadleaf trees. Both intersterility groups developed poorly on Alnus glutinosa, Abies grandis, Poputus tremuta × tremutoides and Quercus robur , but the S-interstedlity group also grew poorly on Pinus sp. and Betula pendula. Results were compared with field observations reported in the literature.     

Microclimate as a determining element in the distribution of ticks and their development cycles

The paper deals with the problem of interrelationship between macroclimate of the region, mesoclimate of the biotope studied and microclimate of the tick niches proper, necessary for the research of tick ecology. New methods for the solution of microclimatological studies are proposed and the relationship between macro-and mesoclimate, or that between temperature in the tick cage and environment, is formulated. In choosing optimal intervals of data acquisition a two-hour interval (every even hour of the day) has proved to be the most suitable.     

A new approach to the use of meteorological and suction trap data in predicting aphid problems1

The network of suction traps operated by the Rothamsted Insect Survey has provided records of aphid activity since 1965. Previous attempts to use this information with meteorological data for predicting aphid problems have concentrated mainly on simple linear regression techniques. In this paper the value of a more complex multiple regression approach is investigated using additional data from an increased range of sites, species and years. Data from 1966 to 1988 are used to produce models to predict the date of the first record of each of 49 aphid species at each of six sites. The models used were particularly successful in predicting the date of the first record at a range of sites in 1989 of four species: Myzus persicae, Macrosiphum euphorbiae, Sitobion avenae and Phorodon humuli.     

Phorate residues in aphid colonies on broad bean plants in relation to the site of application

Aphis fabae colonies were established on both leaflets of the second leaf of young broad bean plants. Doses of phorate sublethal to the aphids were applied to the roots or to the third leaf. The aphids, their honeydew and the foliage on which they were feeding were analysed and the quantities of toxic and non-toxic radiolabel determined at intervals. Toxic metabolites were found in the aphids and the leaves but whereas the aphid colonies in all experiments contained approximately similar amounts of the toxic metabolites, the residues in the leaves on which they were feeding differed considerably. The leaves contained more than 100 times as much of these metabolites following the root treatment than after the foliar treatment. These results are discussed in relation to the aphids' feeding site and the probable transport routes of the toxicants.