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Browsing by Author "Ulgenturk, S."

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    Feeding Behavior of Cryptolaemus Montrouzieri Mealybugs Parasitized by Anagyrus Pseudococci
    (Springer, 2008) Mustu, M.; Kilincer, N.; Ulgenturk, S.; Kaydan, M. B.
    The citrus mealybug Planococcus citri (Risso) and the vine mealybug Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae) are two worldwide polyphagous pests of citrus, vineyards and ornamental plants in greenhouses. Biological control of these pests may rely on the combined release of parasites and predators, which can be affected by intraguild predation (IGP). This Study investigated the feeding behavior of different stages of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) on mealybugs parasitized by Anagyrus pseudococci (Girault) (Hymenoptera: Encyrtidae) 2, 4, 6, 8 and 10 days. The study was conducted in a climate-controlled room at 28 +/- 1 degrees C, 16L:81), and 65 +/- 10% r.h. The highest consumption values for all stages of C. montrouzieri occurred with 2- and 4-day parasitized mealybugs, whereas the predator did not feed on either species of mealybug parasitized for longer periods, due to the onset of mummification.
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    Some Biological Interactions Between the Parasitoid Anagyrus Pseudococci (Girault) (Hymenoptera: Encyrtidae) and Its Host Planococcus Ficus (Signoret) (Hemiptera: Coccoidea: Pseudococcidae)
    (Springer Heidelberg, 2007) Gulec, G.; Kilincer, A. N.; Kaydan, M. B.; Ulgenturk, S.
    The development, longevity, fecundity and life-table parameters of the endoparasitoid Anagyrus pseudococci (Girault) (Hymenoptera: Encyrtidae), 15 d.o. (3rd-instar nymphs) and 21 d.o. (young adult females) of the vine mealybug, Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae) at 28 +/- 1 degrees C, 65 +/- 10%RH and 16:8h L:D under laboratory conditions. The developmental time of female parasitoids within the host was 17.7 +/- 0.39 days in 15 d.o. and 16.65 +/- 0.25 days in 21 d.o. hosts; for males, development time was 16.85 +/- 0.29 and 15.25 +/- 0.09 days, respectively. The average number of offspring per female was 22.35 +/- 1.68 in 15 d.o. and 34.8 +/- 2.56 in 21 d.o. vine mealybugs. The longevity of female parasitoids was 14.8 +/- 0.98 days in 15 d.o. and 15.65 +/- 0.92 days in 21 d.o. mealybugs, respectively; for males, longevity was determined as 7.3 +/- 0.43 and 6.7 +/- 0.54 days, respectively. The mean time of pupation was 7.85 +/- 0.003 days in 15 d.o. mealybugs and 8.65 +/- 0.003 days in 21 d.o. mealybugs. The aggregate encapsulation rate in the parasitized 15 d.o. mealybugs was 49.73 and 60.36% in 21 d.o. mealybugs. Furthermore, effective encapsulation was 24.82% in 15 d.o. mealybugs and 37.50% in 21 d.o. mealybugs. Population growth rate (r(m)) for A. pseudococci was 0.0999 female/female/days in 15 d.o. mealybugs and 0.1269 female/female/days in 21 d.o. mealybugs. The mean population generation time was 23.49 days for parasitoids reared in 15-days-old and 22.39 days when reared in 21 d.o. mealybugs.