Browsing by Author "Kasap, I"

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Effect of Apple Cultivar and of Temperature on the Biology and Life Table Parameters of the Twospotted Spider Mite Tetranychus Urticae
(Springer, 2004) Kasap, I
Development duration and reproduction rate of the twospotted spider mite Tetranychus urticae Koch (Acarina: Tetranychidae) were studied on five different apple cultivars ('Amasya' (local cultivar), 'Golden Delicious', 'Granny Smith', 'Starking Delicious' and 'Starkrimson Delicious') at 25degreesC, 65 +/- 10% r.h. and 16:8 L:D. In addition, the same parameters were determined on Golden Delicious leaves at three constant temperatures (20degrees, 30degrees and 35degreesC, 65 +/- 10% r.h. and 16:8 LD) in the laboratory. T urticae performed better on Granny Smith than on the other cultivars, due mainly to high daily egg production (4.6 eggs/female/day) and the intrinsic rate of natural increase (r(m), which was 0.243 female/female/day). The lowest r(m) was observed on Amasya variety (0.231 female/female/day). Development periods of immature stages of T urticae varied from 6.5 to 15.5 days at 35degrees and 20degreesC, respectively, for females, and from 5.9 to 14.5 days at 35degrees and 20degreesC, respectively, for males. The development thresholds of the eggs and pre-adult stages, respectively, were 10.78degrees and 8.43degreesC, and total effective temperatures were 57.80 and 172.41 degree-days. Mean generation time (T-o) of the population ranged from 9.94 days at 35degreesC to 25.99 days at 20degreesC. The net reproduction rate increased from 66.99 female/female at 20degreesC to 92.19 female/female at 25degreesC, and decreased to 84.34 female/female at 30degreesC and to 12.04 female/female at 35degreesC. The highest r(m) occurred at 30degreesC (0.302 female/female/day) and the lowest at 20degreesC (0.161 female/female/day).
Life History of Euseius Scutalis Feeding on Citrus Red Mite Panonychus Citri at Various Temperatures
(Springer, 2004) Kasap, I; Sekeroglu, E
The aim of this study was to determine the biology and reproductive potential of Euseius scutalis (Athias-Henriot) (Acari: Phytoseiidae) at various temperatures. These data are of value in relation to mass rearing and the development of population dynamics models. The development time, survival and fecundity of E. scutalis were determined at 20, 25 and 30 +/- 1 degreesC, 65 +/- 10% RH and 16:8 photoperiod. Total development times of E. scutalis were 6.7, 4.9 and 4.2 days at 20, 25 and 30 +/- 1 degreesC, respectively, using a diet of all life stages of the spider mite Panonychus citri (McGregor) (Acari: Tetranychidae). In general, preoviposition and postoviposition periods of E. scutalis were shortened as temperature increased, but the oviposition period was longer at 25 degreesC than at 20 and 30 degreesC. The shortest survival time of E. scutalis, at 30 degreesC, was 10.1 days, followed by 23.7 days and 28.6 days at 20 and 25 degreesC, respectively. Mated females laid on average 1.1, 1.4 and 1.7 eggs per female per day and 21.5, 39.7 and 17.1 eggs over their entire life time at 20, 25 and 30 degreesC, respectively. The sex ratios of E. scutalis were 2.11/1, 2.24/1 and 2.11/1 female/male at 20, 25 and 30 degreesC, respectively. The intrinsic rate of natural increase (r(m)) increased with rising temperatures from 0.166 at 20 degreesC to 0.295 females/female/day at 30 degreesC. The net reproductive rate (R-0) was highest at 25 degreesC (26.03 females/female) and lowest at 30 degreesC (12.95 females/female). Mean generation time (T-0) was longest at 25 degreesC (17.50 days) and shortest (9.53 days) at 30 degreesC.
Life History of Hawthorn Spider Mite Amphitetranychus Viennensis (Acarina: Tetranychidae) on Various Apple Cultivars and at Different Temperatures
(Kluwer Academic Publ, 2003) Kasap, I
Development duration and reproduction rate of hawthorn spider mite Amphitetranychus viennensis (Zacher) were carried out on five different apple cultivars (Amasya ( local cultivar), Golden Delicious, Granny Smith, Starking Delicious and Starkrimson Delicious) at 25 degreesC, 65 +/- 10 % RH and 16: 8 L: D. In addition, the same parameters were determined on Golden Delicious leaves at three constant temperatures (20, 30 and 35 degreesC, 65 +/- 10% RH and 16: 8 L: D) in the laboratory. A. viennensis showed a better performance on Golden Delicious than on the other apple cultivars. This was mainly due to a short development time (10.7 days), high daily egg production (5.2 eggs/female/day) and early reproduction peak. The highest intrinsic rate of natural increase (r(m)) was determined on the variety Golden Delicious (r(m) = 0.247/day), while the lowest one was observed on the variety Starking Delicious (r(m) = 0.215/day). The developmental periods of A. viennensis varied from 7.4 to 18.8 days at 35 and 20 degreesC for females, while it varied from 7.9 to 17.2 days at 30 and 20 degreesC for males. The development threshold of the eggs and pre-adult stages were 9.72 and 9.07 degreesC, total effective temperature was 72.99 and 185.18 degree days, respectively. The mean generation time (T-o) of the population ranged from 16.13 days at 30 degreesC to 29.15 days at 20 degreesC. The net reproductive rate (R-0) increased from 54.33 female/female at 20 degreesC to 78.34 female/female at 25 degreesC, and decreased to 75.71 female/female at 30 degreesC. The highest intrinsic rate of increase (r(m)) was reached at 30 degreesC (r(m) = 0.268/day), the lowest one at 20 degreesC (r(m) = 0.136/day).
Life-History Traits of the Predaceous Mite Kampimodromus Aberrans (Oudemans) (Acarina:phytoseiidae) on Four Different Types of Food
(Academic Press inc Elsevier Science, 2005) Kasap, I
The developmental time, survival, and fecundity of Kampimodromus aberrans were determined on four different food types, birch pollen (Betula pendula) alone; Tetranychus urticae; T urticae+birch pollen together and Amphitetranychus viennensis, at 25 +/- 1 degrees C, 65 +/- 10% RH, and 16:8 photoperiod under laboratory conditions. Total developmental time of K aberrans females was 7.9, 10.1, 8.0, and 11.3 days on pollen, T urticae, pollen + T urticae, and A. viennensis, respectively. The mortality rate of immature stages of K aberrans was highest when feeding on spider mites, especially for protonymph stages feeding on T urticae (% 42 for both sexes). The mortality rate of K aberrans feeding on pollen was lower than the mortality rate on the other food types. The total and daily egg production rates were the highest on T urticae and pollen + T urticae (18.9 and 0.9 eggs; 17.2 and 1.0 eggs, respectively). The total egg production was at its lowest on A. viennensis (5.9 eggs), while the daily egg production was lowest on pollen and A. viennensis (0.6 and 0.7 eggs). K aberrans feeding on pollen had the highest intrinsic rate of increase, (r(m)), at 0.129 female/female day, followed by 0.108 female/female/day on pollen + T urticae, while K aberrans feeding on A. viennensis displayed the lowest at 0.067 female/female/day. On T urticae, the intrinsic rate of natural increase of K aberrans was determined as 0.095 female/female/day. (c) 2005 Elsevier Inc. All rights reserved.
The Potential of the Hatay Population of Phytoseiulus Persimilis To Control the Carmine Spider Mite Tetranychus Cinnabarinus in Strawberry in Silifke Icel, Turkey
(Springer, 2002) Kazak, C; Karut, K; Kasap, I; Kibritci, C; Sekeroglu, E
The Hatay population of the predatory mite Phytoseiulus persimilis Athias-Henriot was released into a commercial field of cv. 'Chandler' strawberries for the control of Tetranychus cinnabarinus Boisduval (Acari: Phytoseiidae: Tetranychidae) in 2000 and 2001 in Silifke county of Icel on the East Mediterranean coast of Turkey. In 2000, populations of T. cinnabarinus were recorded in the field from the beginning of March in most plots, and increased gradually until mid-May. T. cinnabarinus populations declined to very low levels in all predator release plots approximately 2 weeks after reaching a peak. In general, predator populations rose linearly as the population densities of spider inites increased until mid-May. P. persimilis numbers peaked during the period 16-23 May. A similar scenario developed in 2001, but because of the relatively high number of T. cinnabarinus in all plots at the beginning of the experiment, both T. cinnabarinus and P persimilis peaked almost one month earlier than in 2000. In both years, the Hatay population of P. persimilis demonstrated good potential for the control of Ecinnabarinus in field-grown strawberry in the Silifke region of Icel.