Parasitization of the Malayan black bug (MBB) by five species of egg parasitoids
1988
Arida, G.S. | Shepard, B.M. | Perez, V.A. (International Rice Research Inst., Los Banos, Laguna (Philippines))
The ability of a parasitoid to cause high parasitization in the presence of competing species may determine its effectiveness as a natural control agent. At Palawan National Agricultural College, Aborlan, Palawan [Philippines], the control of MBB [Malayan black bug] Scotinophara coartata by the indigenous egg parasitoid Telenomus triptus and four introduced species: T. cyrus, Trissolcus basalis, Psix lacunatus, and T. chloropus was studied. One gravid female of each parasitoid species was introduced into individual 11- x 55-cm mylar cages with patted plants bearing a female MBB with 1 egg mass. After 24 h, the egg masses were removed and held in 1.5- x 15-cm test tubes plugged with cotton until parasites or MBB nymphs emerged. The experiment was replicated 20 times. More than 90% of the parasites that emerged were indigenous T. triptus.
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