1 - Phytosanitary Resources

Survey Procedures
Rubber septa lures are loaded with different amounts of synthetic pheromone
(0.1 mg, 0.3 mg, and 0.5 mg). The lure with 0.3mg is suitable for most survey
applications, while the low load lure (0.1mg) is useful to survey in enclosed
buildings such as packing and sorting houses. The high load lure (0.5mg) is
suitable for trapping in open fields (Al-Zaidi, 2009).
Table 4-1 Trapping Location and Selection of Pheromone Lure Load
If this trapping location:
Then use this lure load (mg):
Enclosed buildings 0.1
Most survey locations 0.3
Open fields 0.5
Some companies that manufacture and market pheromone lures also market
the traps, or else offer complete monitoring systems for Tuta absoluta. Notable
among these are ISCA Technologies (United States), Russell IPM Ltd. (United
Kingdom), Koppert Biological Systems (Netherlands), and PRI
PHEROBANK (Netherlands).
For further information, contact the EDP-National Survey Supply Coordinator.
Trapping With Pheromone Lures
Pan Traps
Pan traps consist of a plastic container holding water and a pheromone lure.
The traps can vary in shape (circular, rectangular), volume of water, and lure
placement (Figure 4-6 on page 4-12, Figure 4-7 on page 4-12, Figure 4-8 on
page 4-12, and Figure 4-9 on page 4-13). France has recommended a circular
pan trap with a 30-cm diameter (FREDON-Corse, 2009a) that holds 3.5 liters
of water (ASOCOA, 2010). The lure is secured above the water with a wire
attached at both ends of the container.
Other pan traps have a built-in holding area for the pheromone lure which
protects it from direct sunlight. A small amount of vegetable oil or soap should
be added to the water (Koppert, 2010) to reduce surface tension so the insect is
trapped in the water and not on the surface where it can escape (MEM, 2010).
Some pan traps are equipped with a system to help maintain the water level in
the trap.
6/2011 Tomato Leafminer 4-11
Emergency and Domestic Programs