Life table of Nabis pseudoferus rem. (Hmiptera: Nabidae) feeding on Spodoptera littoralis boisd. (Lepidoptera: Noctuidae) under laboratory conditions
Özet
The purpose of this investigation was to determine some
biological parameters of the predator, Nabis pseudoferus
Rem. (Hemiptera: Nabidae), feeding on the Egyptian cotton
leaf worm Spodoptera littoralis Boisd. (Lepidoptera: Noctuidae).
Experiments were conducted in a climatic chamber
at 25 ±1 °C and 60 ± 5 % RH under 16:8 light:dark photoperiod.
N. pseudoferus feeding on S. littoralis individuals
being on cotton seedlings kept in cages (12x8x7 cm)
was used for the experiments. Mortality rate was 33.33%
and females laid an average of 50.92 eggs during their life
time. From the constructed life table, the following parameters
were obtained: the intrinsic rate of increase (rm, 0.079
females/female/day), net reproduction rate (Ro, 31.00 females/
female), mean generation time (To, 43.246 days),
gross reproductive rates (GRR, 37.992), doubling time (T2,
8.729) and the finite rate (λ) of N. pseudoferus (1.083),
respectively.
Bağlantı
http://hdl.handle.net/11472/601Koleksiyonlar
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