Akademik Veri Yönetim Sistemi
Phytoparasitica, cilt.3, ss.1-12, 2020 (SCI İndekslerine Giren Dergi)
Abstract Small walnut aphid (Chromaphis
juglandicola (Kaltenbach) (Hemiptera: Aphididae) is
important pest in walnut orchards in Lake Van Basin,
Turkey. In this study, the life-table parameters reflecting
population growth rate and predation rate of
Chrysoperla carnea (Stephen) (Neuroptera:
Chrysopidae), which is one of the important predators
of the pest, were determined. Life table parameters were
estimated according to age-stage, two-sex life table
method. Variances and standart errors of population
parameters were obtained according to Bootstrap method.
The values obtained for the intrinsic rate of increase
(r), finite rate of increase (λ), net reproductive rate (R0)
and mean generation time (T) were 0.072 d−1, 1.070 d−1,
62.48 offspring and 57.16 d, respectively of C. carnea
fed on Chromaphis juglandicola. The net predation rate
(C0) was determined as 212.9 aphids. Pradation projection
was performed by using timing program to prevent
the predator’s decrease in predation capacity and to
determine the most appropriate release quantities and
the appropriate interval between releases (to fill predation
gaps) for biological control. The possible effects of
the findings on the bio-controls of Chromaphis
juglandicola by C. carnea were discussed. Results obtained
can be used in pest management program that
will be prepared for this pest.
Keywords Life table . Chromaphis juglandicola .
Population parameters . Chrysoperla carnea . Predation
rate . Timing