Effectiveness of deltamethrin for protecting olives from attack by the beetle Phloeotribus scarabaeoides (Scolytidae)

Effect of the combined treatment of insecticides and an attractant for the control of Phloeotribus scarabaeoides, a pest of Olea europea

“…After different periods of time, randomly selected twigs were cut from each tree. Three to four twigs were placed in glass bottles together with five P scarabaeoides , covered with a lid, and put under controlled conditions of light and humidity in an experimental design previously reported7, 8, 15 and replicated per quadruplicate. After 48 h, the number of surviving beetles was recorded.…”

“…In general, recommendations include treatments with organophosphorus insecticides on a belt of olive trees 200–250 m around inhabited foci 2. 5 Recent studies have shown also the efficacy of pyrethroid insecticides in reducing olive bark beetle populations 6–8. It has also been found that ethephon which releases ethylene, acts as attractant for P scarabaeoides ,9–11 thus opening new opportunities for the application of a lure‐and‐trap system to control this important olive pest 12.…”

“…Among the different pyrethroid insecticides which have been applied against this scolytid, deltamethrin has been effective8 but has shown some repellency when sprayed on olive logs. The aim of this study was to compare deltamethrin with different organophosphorus insecticides and to evaluate its use in different control strategies which may be used in the integrated management of this olive pest.…”

Evaluation of decreasing deltamethrin concentration in the treatment of olive logs: effects on the olive bark beetle and its associated parasitoids

“…Methoxychlor is effective (Campos and Pen˜a 1997) but, like other organochlorine insecticides, it accumulates in the environment and its use is being banned in most countries, together with some organophosphorus pesticides such as methidathion. We therefore focused on the control of the olive beetle through the use of pyrethroid insecticides such as acypermethrin or deltamethrin (Pen˜a et al 1998;Lozano et al 1999Lozano et al , 2001Rodrı´guez et al 2003a;Ruano et al 2008). Pyrethroid insecticides have been reported to have a repellent effect on insects (Hirano 1990;Pen˜a et al 1998;Rodrı´guez et al 2003a;Rose et al 2005).…”

“…Three different types of insecticide treatment for bark beetles have been identified: (i) log treatment before the beginning of the beetle colonization (Pen˜a et al 1998), (ii) log treatment after colonization, but before beetle emergence (Ruano et al 2008), and (iii) olive tree treatment before the arrival of the insects that have emerged from the logs (Lozano et al 2001;Rodrı´guez et al 2003a). Each strategy has both advantages and drawbacks.…”