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Entomologists play matchmakers for cerambycid beetles
Date:8/5/2008

nvasive cerambycid species, or both, regulatory personnel can reliably predict whether a new species uses attractant pheromones that can be identified and exploited for its detection and management."

The study also showed that many cerambycid species produce large amounts of pheromone hundreds of micrograms over a few hours per beetle. "This is critically important for lure design, because lures must release 5,000 to 25,000 micrograms of pheromone per day to be effective," Millar said. "This is in marked contrast to pheromone-baited traps for other insect species, where release rates from the trap lures are typically a few micrograms per day. We are working to develop lures for field use that are capable of these high release rates for extended periods, such as weeks."

Cerambycid beetles, which affect a wide range of trees, can also transmit nematodes, fungi, and other pathogens that can kill the host trees. Cerambycids are also likely to transmit pitch canker and other fungal diseases as they feed and lay eggs.

The tunnels made by cerambycid larvae in host trees are roughly circular in cross section, and can be more than an inch wide. Some species bore in the sapwood and heartwood, whereas others feed in the cambium layers, effectively destroying the vascular tissues of the tree, and killing branches or the whole tree.


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Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

Page: 1 2 3

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