Predation rate linked to life table of Chrysoperla carnea (Stephen) (Neuroptera: Chrysopidae) fed on small walnut aphid (Chromaphis juglandicola) (Kalt.) (Hemiptera: Aphididae): with population and predation projections

Yılmaz M. , Polat Akköprü E.

Phytoparasitica, cilt.3, ss.1-12, 2020 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 3
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s12600-020-00834-3
  • Dergi Adı: Phytoparasitica
  • Sayfa Sayıları: ss.1-12


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