Importance of bacterial decomposition and carrion substrate to foraging brown treesnakes

Brown treesnakes are an invasive species to the island of Guam that have ca used extensive ecological and economic damage. Efforts to control the snake population have included trapping using live mouse lures, but for logistic al and economic reasons a synthetic lure is needed. When searching for live food, brown treesnakes use both visual and odor cues. However, when search ing for carrion, odor cues are sufficient. Attempts to develop synthetic lu res based on chemical reconstruction of the complex carrion odor have not s ucceeded. We provide evidence that a microbial-substrate interaction is imp ortant for bait take by brown treesnakes. Microbial cultures taken from mou se carrion indicate that Enterobacter agglomerans is the predominant bacter ium, and field tests suggest that this organism may be important to odor pr oduction that attracts brown treesnakes. This information may prove useful in the development of microbial-based biological reactors that could be for mulated to produce a continuous stream of odor of sufficient complexity so as to be attractive to foraging snakes.