Browsing by Author "Denizhan, Evsel"

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Additions To Eriophyoid Mites (Acari: Prostigmata: Eriophyoidea) in Van Lake Basin-Turkey
(Entomological Soc Turkey, Ege Univ, 2011) Denizhan, Evsel
This paper provides information about Eriophyoid mites of Van Lake basin during 2008-2010 years (Van, Hizan, Ercis, Tatvan, Muradiye). As a result 7 species were identified; Rhyncaphytoptus massalongoianus (Nalepa, 1893), R. megarostris (Keifer, 1938), Abacoptes ulmivagrans (Keifer, 1939), Aceria tuberculata (Nalepa, 1891), Aceria angustifoliae (Denizhan et al., 2008), Calepitrimerus vitis (Nalepa, 1905), Anthocoptes salicis (Nalepa, 1894). Rhyncaphytoptus massalongoianus (Nalepa, 1893), R. megarostris (Keifer, 1938), Abacoptes ulmivagrans (Keifer, 1939), Aceria tuberculata (Nalepa, 1891) are new records for the fauna of Turkey.
Analysis of Overdispersed Count Data: an Application on Acar (Acarina) Counts
(Publ House Bulgarian Acad Sci, 2016) Akkol, Suna; Denizhan, Evsel
Overdispersed count data sets are frequently encountered in plant protection area as in various fields of study. This kind of data set sometimes has more zero values than expected in accordance with Poisson distribution. This study aims to determine the regression method with best models the numbers of protogyne, deutogyne, nymphopupa and eggs of Aculus schlechtendali (Apple Rust Mite; Acarina: Eriophyidae), known to cause serious economic loss on Fuji, Gala, Red Chief, and the Granny Smith apple produce of Van province. To serve this purpose, Poisson, Negative Binomial, Zero Inflated Poisson, and Zero Inflated Negative Binomial regression models were applied for statistical analysis. Akaiki Information Criteria and Bayesian Information Criteria were used in order to determine the best model. The best model was determined as Zero Inflated Negative Binomial regression for the numbers of protogyne, as well as Negative Binomial regression for the numbers of deutogyne, nymphopupa and eggs.
Determination of Harmful Eriophyoidea (Acarina) Species on Fruit Trees in Diyarbakir
(2013) Geçer, Emel; Denizhan, Evsel
Diyarbakır ilinde bulunan meyve ağaçları üzerinde zararlı Eriophyoidea üst familyasına ait türlerin saptanması amacıyla 2010-2012 yılları arasında survey çalışması yapılmıştır. Bu çalışma sonucunda 8 cinse ait (Aceria, Aculus, Calipitrimerus, Colomerus, Eriophyes, Phyllocoptes, Rhyncaphytoptus, Diptacus) toplamda 15 tür (Colomerus vitis, Eriophyes pyri, Eriophyes armeniacus, Phyllocoptes amygdali, Phyllocoptes pruni, Phyllocoptes abaenus, Calepitrimerus vitis, Calepitrimerus baileyi, Aceria avanensis, Aceria erinea, Aceria granati, Aculus schlechtendali, Aculus fockeui, Rhyncaphytoptus ficifoliae, Diptacus gigantorhynchus tespit edilmiştir. Bu türler Diyarbakır ili için yeni kayıt niteliğindedir. Anahtar kelimeler: Diyarbakır, Acarina, Eriophyoidea, , Meyve ağaçları
Eriophyid Mites (Acari: Eriophyidae) From Turkey
(Magnolia Press, 2011) Denizhan, Evsel
A survey was carried out in 2006-2009 of the Eriophyidae species present on cultivated plants and on plants of natural vegetation of the regions of Van Lake Basin and Ankara, Turkey. A total of 18 species were identified, in the following genera: Aceria-six species; Aculus-two species; Eriophyes-two species; Abacarus, Anthocoptes, Aculops, Calepitrimerus, Colomerus, Phyllocoptes, Schevtchenkella and Tetra-one species each.
Eriophyoid Mite Fauna (Acari: Trombidiformes: Eriophyoidea) of Turkey: New Species, New Distribution Reports and an Updated Catalogue
(Magnolia Press, 2015) Denizhan, Evsel; Monfreda, Rosita; De Lillo, Enrico; Cobanoglu, Sultan
More than one hundred species of Eriophyoidea have been recorded hitherto from Turkey. Within the last decade, a large plant survey was carried out in order to investigate the eriophyoid fauna present in Turkey, with particular emphasis on species affecting weeds and ornamental plants. In addition, the Turkish literature has been examined for previous records of eriophyoid mites. New species, Paraphytoptus intybi n. sp. on common cichory, Cichorium intybus (Compositae) and Phytoptus albae n. sp. on white poplar, Populus alba (Salicaceae), are described and illustrated herein. In addition, a further 31 species were found to be new records for the eriophyoid fauna of Turkey with Aceria calaceris, Phyllocoptes didelphis and Vasates immigrans being new reports for the Palaearctic region. All known eriophyoid species records from Turkey appearing in papers published up until March 2013 are listed in this catalogue along with remarks and information on their current distribution in Turkey and taxonomic status.
Eriophyoid Mites (Acari: Prostigmata: Eriophyoidea) From Turkey: Description of Five New Species
(Magnolia Press, 2016) Kiedrowicz, Agnieszka; Denizhan, Evsel; Bromberek, Klaudia; Szydlo, Wiktoria; Skoracka, Anna
Five new eriophyoid mite species (Eriophyidae) from Turkey are described and illustrated in this paper: Aceria vanensis n. sp., Aceria onosmae n. sp., Aculus lydii n. sp., Aculus gebeliae n. sp. and Aculus spectabilis n. sp.. The descriptions are based on the morphology of females collected from weedy plants, respectively: Amaranthus retroflexus L. (Amaranthaceae), Onosma isauricum Boiss. et Heldr. (Boraginaceae), Hypericum lydium Boiss. (Hypericaceae), Lotus gebelia Vent. (Fabaceae) and Stachys spectabilis Choisy ex DC. (Lamiaceae). The new species were found to be vagrant on their host plants with no visible damage symptoms observed.
Eriophyoid Mites (Acari: Prostigmata: Eriophyoidea) in Van Lake Basin
(Entomological Soc Turkey, Ege Univ, 2011) Denizhan, Evsel
This paper provides information about Eriophyoidea fauna of Van Lake basin during 2007-2009 years. As a result 6 species were identified; Aceria salicina (Nalepa, 1911), A. malherbae (Nuzzaci, 1985), A. verbasci (Boczek, 1964), Aculops rhodensis (Keifer, 1957), Aculus tetanothrix (Nalepa, 1889) and Rhyncaphytoptus salicifoliae (Keifer, 1939). From these species A. malherbae (Nuzzaci, 1985), A. verbasci (Boczek, 1964) and Rhyncaphytoptus salicifoliae (Keifer, 1939) are new record for the fauna of Turkey.
Eriophyoid Mites (Acari: Prostigmata: Eriophyoidea) in Van Lake Basin From Turkey
(Taylor & Francis inc, 2010) Denizhan, Evsel; Cobanoglu, Sultan
There has been no study on the fauna of Eriophyoidea in the Van Lake Basin in the eastern part of Anatolia. A survey was carried out to determine the Eriophyoidea on the natural and cultured plants of the Van Lake Basin during 2007-2008. Twenty-five species were found, two of which (Eriophyes euphorbiae; Abacarus hystrix) are new records for the Turkish eriophyoid fauna.
Eriophyoid Mites (Acari: Prostigmata: Eriophyoidea) on Ulmus Campestris L. (Ulmaceae) in Van Lake Basin
(Entomological Soc Turkey, Ege Univ, 2010) Denizhan, Evsel; Cobanoglu, Sultan
Eriophyoid mites (Acari: Prostigmata: Eriophyoidea) on Ulmus campestris L. (Ulmaceae) in Van Lake basin This paper provides information about Eriophyoidea fauna on Ulmus campestris L. (Ulmaceae) of Van Lake basin during 2007-2009 years. As a result 4 species were identified; Aceria filiformis (Nalepa, 1891), Aceria campestricola (Frauenfeld, 1865), Tetra concava (Keifer, 1939) and Shevtchenkella ulmi (Farkas, 1960) (Acarina: Eriophyidae). S. ulmi is a new record for the fauna of Turkey.
Infestation of Grasses by Eriophyoid Mites (Acari: Eriophyoidea) in Turkey
(Taylor & Francis inc, 2014) Kiedrowicz, Agnieszka; Rector, Brian; Denizhan, Evsel; Szydlo, Wiktoria; Skoracka, Anna
Despite the economic importance of eriophyoid mites as agricultural pests, especially of cereal crops, knowledge of the eriophyoid fauna in Turkey remains incomplete. This article presents the results of a 3-year study on grass-infesting eriophyoid mites in Turkey. The aim of this study was to collect and identify eriophyoid species infesting wild and cultivated grasses and to estimate the degree of overall mite infestation on grasses. The study involved both qualitative samples (to record the presence or absence of mites) and quantitative samples (to investigate the parameters of mite infestation: viz. prevalence, intensity and density). Seven eriophyoid species - Aceria tosichella (Keifer, 1969), Abacarus hystrix (Nalepa, 1896), Abacarus lolii Skoracka, 2009, Aculodes holcusi Skoracka, 2004, Aculodes dubius (Nalepa, 1891), Abacarus longilobus Skoracka, 2002, Aculodes sp. nov. - were collected from grasses in the course of this study. Quantitative data were available for the first four of these species, and parameters of infestation differed greatly among the hosts. Aceria tosichella was the species infesting the largest number of grass species, and A. hystrix was the species with the highest values of prevalence and density on wheat. New host species for A. tosichella were reported, including Dactylis glomerata, Bromus sclerophyllus, Eremopyrum orientale, Lolium temulentum and Poa bulbosa, all for the first time in Turkey.
Modeling Mite Counts Using Poisson and Negative Binomial Regressions
(Parlar Scientific Publications (p S P), 2016) Yesilova, Abdullah; Denizhan, Evsel
Poisson regression is frequently used for analyzing dependent variable based on count data. The main feature of the Poisson distribution is the assumption that the mean and variance are equal. However, this equal the mean and the variance relationship rarely occurs in application. In many case, the variance is larger than the mean, which is called overdispersion. When overdispersion occurs in a data set, negative binomial regression, in which parameter estimations are obtained by considering the effect that stems from overdispersion, is preferable. In this study, there was overdispersion in the number of mites. Therefore, parameter estimations were interpreted according to negative binomial regression. Effects of all independent variables were statistically significant on number of mites (p<0.01) in the negative binomial regression. The number of mites in Bardakci area was higher than that in Edremit and Samranalti (p < 0.01). Mite density in July was higher than that in other months (p < 0.01). The number of mites in the Golden variety was also found to be less than that in the Starking variety (p < 0.01).
A New Record of Tegolophus Hassani (Keifer, 1959) (Acari: Prostigmata: Eriophyoidea) From Cyprus
(Taylor & Francis inc, 2014) Pilanci, Aktuerk; Denizhan, Evsel; Ozden, Ozge
A field study was conducted to investigate eriophyid mites associated with olive trees in north Cyprus. The surveys were carried out in 32 different localities in July 2011 and in January 2013. Two species were recorded from the samples Aceria oleae (Nalepa, 1900), previously recorded in Cyprus, and Tegolophus hassani (Keifer, 1959) (Acari: Prostigmata: Eriophyidae), a new record for the island of Cyprus.
One Example of Using Geographic Information Systems Studies in the Field in Acarology: Google Earth
(Taylor & Francis inc, 2010) Denizhan, Evsel; Cobanoglu, Sultan; Kotaoglu, Caglar
Geographic information systems are geographical position-based and analysis and information-sharing systems that can be used for all scientific studies. GOOGLE EARTH software provides cartographical map information and satellite images to all internet users and shows the smallest settlement units of countries and cities. Researchers can also access map information quickly and are able to locate their geographical position. We used this system during a study of the determination of Eriophyoidea (Acarina) species, their hosts, distribution, natural enemies, and population development of Aculus schlechtendali (Nalepa, 1892) on ornamental plants in Ankara.
Paecilomyces Lilacinus, a Potential Biocontrol Agent on Apple Rust Mite Aculus, Schlechtendali and Interactions With Some Fungicides in Vitro
(Springer, 2010) Demirci, Fikret; Denizhan, Evsel
The apple rust mite Aculus schlechtendali (Nal.) (Acari: Eriophyidae), is a main pest in apple-growing areas in Ankara, Turkey, and chemical control applications have some limitations. Entomopathogenic fungi have a potential for biological control of mites. In this study, an entomopathogenic fungus, Paecilomyces lilacinus (Thom) Samson (Deuteromycota: Hyphomycetes), was first isolated from the mite cadavers on Japanese crab apple leaves and pathogenicity of the fungus was observed in different inoculum densities and relative humidities. The pathogen caused up to 98.22% mortality of the mite population. The effects of some fungicides on the entomopathogenic fungus were determined in in vitro studies. Carbendazim, penconazole and tebuconazole were the most effective fungicides on mycelial growth of P. lilacinus, with EC50 values under 3 A mu g ml(-1). In spore germination tests, captan, mancozeb, propineb were the most effective fungicides, followed by tebuconazole, penconazole, nuarimol and chlorothalonil. Sulphur could not inhibit the conidia germination totally at 5,000 A mu g ml(-1). Copper oxychloride and fosetyl-al prevented conidia formation at concentrations above 1,000 A mu g ml(-1).
Population Development and Predators of Aculus Schlechtendali (Nalepa) (Acarina: Eriophyidae) on Malus Floribunda L. (Rosaceae) in Ankara
(Ankara Univ, Fac Agr, 2008) Denizhan, Evsel; Cobanoglu, Sultan
Population development of Aculus schlechtendali (Nalepa) (Acarina: Eriophyidae) was investigated in three different locations (Kecioren, Besevler and Kalaba) in Ankara, on Malus floribunda L. (Rosasacae) during 2004 - 2006 years. Two-year of observations revealed that A. schlechtendali individuals were hibernates in deutogyne stage in the crevices and hiden places of the trees. They began to move to the blossoms of the plants at the beginning of may. Deutogynes laid their eggs on the feeding place of the youngs. In general higher eriophyoid protogyne populations were observed during May and June all three locations of the study area. The data show that the deutogyne population reached its peak by the end of May and after this, the deutogyne population levels become lower whereas protogyne population showed small rate of increas around the same time but reached its peak by mid June. Deutogyne population has been seen in low population density during the summer months. During surveys on predators of Aculus schlechtendali two phytoseiids, one stigmaeid, and one tydeid mite species, and 14 Cocinellidae species were recognized as natural enemies. Beside this, taxonomic characteristics and distribution of this eriophyid species were indicated.