Browsing by Author "Yarimbatman, Alper"

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Field Catches of Oxythyrea Cinctella Using Visual and Olfactory Cues
(Wiley, 2012) Vuts, Jozsef; Kaydan, Mehmet Bora; Yarimbatman, Alper; Toth, Miklos
Diurnal flower-visiting scarabs (Coleoptera: Scarabaeidae, Cetoniinae) use visual and olfactory stimuli when locating possible feeding sites. In field trapping experiments in Turkey, testing different colours and floral volatile compounds, a combination of fluorescent yellow colour and a blend of 2-phenylethanol and (+/-)-lavandulol leads to the highest number of Oxythyrea cinctella (Schaum) being caught. Trap catches of O. cinctella with respect to the individually presented visual or olfactory cues are significantly lower than to a combination of the two. The closely-related O. funesta, a sibling species in the Oxythyrea genus, is also known to be caught by the same colour-volatile combination. When applied together in a high capture-capacity trap, the fluorescent yellow colour and the binary floral odour blend may provide a suitable means of monitoring population changes of O. cinctella, which indicates their potential use in agriculture.
Functional Response of the Coccinellid Predator Adalia Fasciatopunctata Revelierei To Walnut Aphid (Callaphis Juglandis)
(Springer, 2010) Atlihan, Remzi; Kaydan, M. Bora; Yarimbatman, Alper; Okut, Hayrettin
The functional response types and parameters of 3rd and 4th instar larvae, and adult females and males of a coccinellid predator, Adalia fasciatopunctata revelierei (Mulsant) (Col.: Coccinellidae), were evaluated at five different densities of Callaphis juglandis (Goeze) (Hemiptera: Aphididae) in order to understand their role for the aphid's biological control. Experiments were carried out in petri dishes at 25 +/- 1 degrees C, 60 +/- 10% r. h. and 16L:8D photoperiod in a controlled temperature room. All tested stages exhibited a Type II response determined by a logistic regression model. The attack rate (alpha) and handling time (T-h) coefficients of a Type II response were estimated by fitting a "random-predator" equation to the data. Although the estimates of alpha for all stages of A. fasciatopunctata revelierei tested were similar, the longest T-h was obtained for 3rd instar larva because of the lower consumption rate at densities above 40 prey/day. Results indicated that the adult female has the highest predation of C. juglandis followed by 4th instar larvae, adult males and 3rd instar larvae. However, further field-based studies are needed to draw firm conclusions.
Population Density of the Important Harmful Mites and Their Predatories in the Walnut Orchards of Around Van Lake
(Entomological Soc Turkey, Ege Univ, 2009) Kasap, Ismail; Atlihan, Remzi; Ozgokce, M. Salih; Kaydan, M. Bora; Polat, Evin; Yarimbatman, Alper
The aim of this study was to determine the population densities of pest and important predatory mites in the walnut orchards of around Van Lake. The study was conducted in five walnut orchards in the Adilcevaz county in Bitlis (three orchards) and Gevas county in Van (two orchards), during the growing seasons of 2005-2006. Surveys were carried out in every week from May to November. The results of study indicated that the population densities of mites began to increase generally in early July, reached the maximum level at late July and at early August and preserved to late October. In this period, the population densities of Aceria erinea Nalepa (Acari: Eriophyidae) and Eotetranychus carpini (Oudemans) (Acari: Tetranychidae) were determined as 51.9 galls/leaf and 304.1 mites/leaf, respectively. Euseius finlandicus (Oudemans) (Acari: Phytoseiidae) was the most effective predatory mite on E. carpini and A. erinea and it was observed that its population reached to 4.5 mites/leaf. In the sprayed orchard, E. finlandicus population was not enough for controlling mites and the population densities remained at very low levels.