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Life table and some feeding features of Nephus kreissli fed on Planococcus ficus

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Abstract

In this study certain biological and prey consumption features of the predator of mealybug, namely Nephus kreissli Fürsch & Uygun (Coleoptera: Coccinellidae), fed on vine mealybug Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae), were determined under the laboratory conditions. Experiments were performed in the acclimatized room under 28 ± 1°C, 60 ± 10% r.h. and a photoperiod of 16:8 h(L:D) conditions. To determine the biological features of the coccinellid, predator individuals were continuously observed from egg stage to end of adult stage. The development, survival and fecundity of N. kreissli were determined and all the measured data were recorded daily. The total development time from egg to the eclosion of adult stage was determined as 31.6 ± 0.4 days. The lifespan of males and females was 66.0 ± 3.8 and 65.8 ± 3.5 days, respectively; and a single female laid 122.6 eggs. The raw data related to life history were analyzed by using the age-stage, two-sex life table. The intrinsic rate of increase, the net reproductive rate, and the mean generation time were 0.0709 ± 0.0036 d−1, 53.1 ± 9.5 offspring and 55.8 ± 1.3 days, respectively. The first and second instars of N. kreissli preferred egg stages of P. ficus to other stages of mealybug. On the other hand, third and fourth instars and adult predators preferred the second and third instar nymphs and adult females of the prey. It was determined that the egg consumption of N. kreissli increased with the development of larval stages, and that the highest consumption was recorded in its fourth instar.

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Acknowledgments

This research was supported by Ankara University BİYEP (Scientist Training Project) Programme. We are grateful to Professor Dr. Muhip Özkan and Research Assistant Rabia Albayrak (Ankara University, Faculty of Agriculture, Department of Animal Science, Biometry and Genetics Unit) for their kind help in the statistical analyses of consumption preference and consumption capability studies.

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Authors and Affiliations

  1. Seyrani Faculty of Agriculture, Plant Protection Department, Erciyes University, 38039, Kayseri, Turkey

    Murat Muştu

  2. Faculty of Agriculture, Plant Protection Department, Ankara University, 06110, Ankara, Turkey

    Neşet Kılınçer

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  1. Murat Muştu
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  2. Neşet Kılınçer
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Correspondence to Murat Muştu.

Additional information

This study was presented as a poster presentation on the IV. Plant Protection Congress of Turkey, 28–30 Jun 2011, Kahramanmaraş, Turkey.

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Muştu, M., Kılınçer, N. Life table and some feeding features of Nephus kreissli fed on Planococcus ficus . Phytoparasitica 41, 203–211 (2013). https://doi.org/10.1007/s12600-012-0279-4

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