Browsing by Author "Kina, E."

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Estimating Population Size and Some Demographic Parameters of Citrus Mealybug, Planococcus Citri (Risso) (Hemiptera: Pseudococcidae) on Cucurbita Moschata Duch. in Laboratory Conditions
(Centenary University, 2021) Özgökçe, M.S.; Kara, H.; Kina, E.; Başi, F.H.
Planococcus citri is an important pest that is common in many parts of the world and feeds on more than 200 plant species. It attacks the leaves, shoots and fruits of the pumpkin (Cucurbita moschata) plant, which is among its hosts, causing significant crop losses. In this study, development, survival and fecundity data of P.citri were obtained on the leaves of the pumpkin plant were in the climatic room which was adjusted to 28 ± 1 °C temperature, 60 ± 5% relative humidity and 16: 8 light: dark conditions. The raw data obtained were tested according to the age-stage twosex life table and the life table parameters were calculated using the Twosex MSChart package program. Accordingly, they were calculated as follows; the intrinsic rate of increase (r) = 0.0802 d-1, the finite rate of increase (λ) = 1.0836 d-1, the net reproductive rate (R0) = 29.231 eggs, and the mean generation time (T) = 42.10 days. In addition, the population size of the pest was estimated using the Timing MSChart program. According to this, when 10 P. citri eggs were taken as the initial population, it was estimated that the population that could occur at the end of 3 months would be 4 137 individuals in total. © 2021, Centenary University. All rights reserved.
Harmful and Beneficial Insect Species and Their Distributions in Wheat Areas in Van Province
(Centenary University, 2022) Özgökçe, M.S.; Kara, H.; Başi, F.H.; Kina, E.
Wheat is one of the most important crops globally in cultivation and production. Insects, which are among the factors that cause quality and quantity losses in wheat production, are among the pest groups that should be monitored and kept under control. This study was carried out in Van province and its districts (Bahçesaray, Başkale, Çaldıran, Çatak, Edremit, Erciş, Gevaş, Gürpınar, Muradiye, Özalp, Saray and Tusba) in May-August 2017 and insect species found in wheat fields were determined. The samplings of harmful and beneficial species were carried out using standard sweep nets and by hand collection. At the end of the study, 66 species belonging to 7 orders and 39 families were found in 165 different localities. Distributions of the species were recorded as 26 species belonging to 12 families in Coleoptera, 19 species belonging to 10 families in Hemiptera, 9 species belonging to 8 families in Diptera, 6 species belonging to 5 families in Hymenoptera, 2 species belonging to 2 family in Orthoptera, 2 species belonging to 1 family in Neuroptera, and 1 species in Thysanoptera. With this study, for the first time, comprehensive information was obtained about the pest species found in the wheat fields in and around Van, their distributions, densities, and the presence of their natural enemies in the region. © 2022, Centenary University. All rights reserved.