Rafeek Ali Abboud(1) Magda Mofleh(1) Hanan Habak(1) and Mohamad Ahmad Ahmad(2)
(1). Lattakia Research Center, General Commission for Agricultural Scientific Research (GCSAR), Damascus, Syria.
(2). Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Dr. Magda Mofleh, Lattakia Research Center, (GCSAR), Damascus, Syria. E-Mail: magda.mofleh @yahoo.com).
Received: 19/08/ 2014 Accepted: 19/05/ 2015
In this study, the reproductive performance of the parasitoid Bracon sp. (Hymenoptera: Braconidae) against the leafminer T. absoluta and Plodia interpunctella H. (Lepidoptera: Pyralidae) as alternate host was studied in the laboratory at Lattakia Agriculture Research Center, Lattakia, Syria, during 2011 and 2012 seasons. Parasitoid’s life tables were organized, and 5 full grown host larvae were presented to the parasitoid daily. Means development period (egg, larvae, and pupa) (X ± SD) for female parasitoids Bracon sp. were 7.86 ± 0.93 and 8.70 ± 0.73 days against P. interpunctella and T. absoluta, respectively. Values of intrinsic rate of increase (rm) were 0.132 and 0.186 on T. absoluta and P. interpunctella, respectively. Also the values of net reproductive rate (R0), Gross reproductive rate (GRR), and the finite rate of increase (λ) were higher on P. interpunctella than T. absoluta, but the generation period time (T) and the doubling time of population (DT) were shorter on P. interpunctella as compared with T. absoluta. This study clarified the capability of breeding the parasitoids Bracon sp. at the lab against P. interpunctella to control T. absoluta in tomato fields.
Key words: Tuta absoluta, Plodia interpunctella, Bracon sp., Biological control.