Effect of corn pollen on some life table and reproduction parameters of predatory bug, Orius albidipennis (Reuter) (Het.: Anthocoridae) fed on egg of Anagasta kuehniella (Zeller) (Lep.: Pyralida
2010
Shahim-Ghalecheh, Kh. | Golizadeh, A. | Hassanpour, M. | Farshbaf Pour Abad, R. | Rafiee-Dastjerdi, H.
Plants pollen can be supplementary or alternative food resource for most species of predators. This research, effect of corn pollen was studied on some life table and reproduction parameters of the predatory bug, Orius albidipennis (Reuter) reared on egg of Anagasta kuehniella (Zeller) at 26±1 °C, 50-60% RH and L16:D8. The experiment was started with 60 oneday- old nymphs of predator. The nymphs were reared individually on each diet (A. Kuehniella egg with and without corn pollen). After adult's emergence, 22 and 19 pairs of adult bugs were selected and each pair was placed in a distinct cage and fed daily on the mentioned diets. Bean pods were used as substrate for oviposition and moisture supply. The numbers of eggs produced by females were recorded daily until all the females died. Results indicated that age specific mortality (qx) of O. albidipennis on both diets was started from second day, but the higher values of that were observed in the late days of adult's life stage. The life expectancy (ex) of new born eggs and new emerged adults on first diet were 34.16 and 34.59 days and on the second diet were 30.03 and 32.92 days, respectively. Mean daily mortality (1/e0) of predator on both diets were approximately estimated to be 0.03. Net fecundity rates were estimated to be 99.09±13.59 and 62.7±10.42, and net fertility rates were 83.23±11.46 and 48.90±8.13, respectively. Statistical analysis showed that adding corn pollen to the diet of O. albidipennis significantly increases net fecundity and fertility rates of the predator.
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