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Journal of Chemical Ecology

, Volume 27, Issue 7, pp 1315–1331 | Cite as

Importance of Bacterial Decomposition, and Carrion Substrate to Foraging, Brown Treesnakes

  • S. M. Jojola-Elverum
  • J. A. Shivik
  • L. Clark
Article

Abstract

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

Bacteria bait Boiga irregularis brown treesnake carcass carrion decomposition Enterobacter agglomerans lure odor rot 

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REFERENCES

  1. CHISZAR, D., KANDLER, K., and SMITH, H. M. 1988. Stimulus control of predatory attack in the brown treesnake (Boiga irregularis) 1. Effects of visual cues arising from prey. Snake 20:151-155.Google Scholar
  2. CHISZAR, D., DUNN, T. M., and SMITH, J. M. 1993. Response of brown treesnakes (Boiga irregularis) to human blood. J. Chem. Ecol. 19:91-96.Google Scholar
  3. CHISZAR, D., LUKAS, W., and SMITH, H. M. 1997a. Response to rodent saliva by two species of rodentiophagous snakes. J. Chem. Ecol. 23:829-836.Google Scholar
  4. CHISZAR, D., RODDA, G. H., and SMITH, H. M. 1997b. Experiments on chemical control of behavior in brown treesnakes, pp. 121-128, in J. R. Mason (ed.). Repellents in Wildlife Management: Proceedings of a Symposium. USDA, National Wildlife Research Center, Fort Collins, Colorado.Google Scholar
  5. CLARK, L. 1997. Responsiveness of brown treesnakes to odors, pp. 129-137, in J. R. Mason (ed.). Repellents in Wildlife Management: Proceedings of a Symposium. USDA, National Wildlife Research Center, Fort Collins, Colorado.Google Scholar
  6. CONRY, P. J. 1988. High nest predation by brown treesnakes on Guam. Condor 90:478-482.Google Scholar
  7. ENGBRING, J., and FRITTS, T. H. 1988. Demise of an insular avifauna: The brown treesnake on Guam. Trans. West. Sect. Wildl. Soc. 24:31-37.Google Scholar
  8. ENGEMAN, R. M., LINNELL, M. A., POCHOP, P. A., and GAMBOA, J. 1998. Substantial reductions of brown treesnake (Boiga irregularis) populations in blocks of land on Guam through operational trapping. Int. Biodeterior. Biodeg. 42:167-171.Google Scholar
  9. FRITTS, T. H. 1988. The brown treesnake, Boiga irregularis, a threat to Pacific Islands. U.S. Fish Wildl. Serv. Biol. Rep. 88:31.Google Scholar
  10. FRITTS, T. H., SCOTT, N. J., JR., and SAVIDGE, J. A. 1987. Activity of the arboreal brown treesnake (Boiga irregularis) on Guam as determined by electrical outages. Snake 19:51-58.Google Scholar
  11. FRITTS, T. H., CHISZAR, D., SCOTT, N. J., JR., and SMITH, B. E. 1989. Trapping Boiga irregularis on Guam using bird odors. J. Herpetol. 23:189-192.Google Scholar
  12. LINDBERG, A. C., SHIVIK, J. A., and CLARK, L. 2000. Mechanical mouse lure for brown treesnakes. Copeia 3:886-888.Google Scholar
  13. RODDA, G. H., and FRITTS, T. H. 1992a. The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards. J. Herpetol. 26:166-174.Google Scholar
  14. RODDA, G. H., and FRITTS, T. H. 1992b. Sampling techniques for an arboreal snake, Boiga irregularis. Micronesica 25:23-40.Google Scholar
  15. RODDA, G. H., FRITTS, T. H., and CONRY, P. J. 1992. Origin and population growth of the brown treesnake, Boiga irregularis, on Guam. Pac. Sci. 46:46-57.Google Scholar
  16. SAVARIE, P. J., SHIVIK, J. A., WHITE, G. C., HURLEY, J. C., and CLARK, L. 2001. Use of acetaminophen for large scale control of brown treesnakes. J. Wildl. Manage. 65:356-365.Google Scholar
  17. SAVIDGE, J. A. 1984. Guam: Paradise lost for wildlife. Biol. Conserv. 30:305-317.Google Scholar
  18. SAVIDGE, J. A. 1987. Extinction of an island forest avifauna by an introduced snake. Ecology 68: 660-668.Google Scholar
  19. SHIVIK, J. A. 1998. Brown treesnake response to visual and olfactory cues. J. Wildl. Manage. 62: 105-111.Google Scholar
  20. SHIVIK, J. A., and CLARK, L. 1997. Carrion seeking in brown treesnakes: Importance of olfactory and visual cues. J. Exp. Zool. 279:549-553.Google Scholar
  21. SHIVIK, J. A., and CLARK, L. 1999a. The development of chemosensory attractants for brown treesnakes, pp. 649-654, in R. E. Johnston, D. Müller-Schwarze, and P. Sorensen (eds.). Advances in Chemical Signals in Vertebrates. Plenum Press, New York.Google Scholar
  22. SHIVIK, J. A., and CLARK, L. 1999b. Ontogenetic shifts in carrion attractiveness to brown treesnakes (Boiga irregularis). J. Herpetol. 33:334-336.Google Scholar
  23. SHIVIK, J. A., WRIGHT, W. G., and CLARK, L. 2000. Seasonal variability in brown treesnake (Boiga irregularis) response to lures. Can. J. Zool. 78:79-84.Google Scholar
  24. StatSoft. 1994. Statistica, v 4.3. StatSoft, Inc., Tulsa, Okalahoma.Google Scholar
  25. U.S. DEPARTMENT OF AGRICULTURE. 1996. Brown treesnake control activities on Guam. Environmental assessment. U.S. Department of Agriculture, Washington D.C.Google Scholar
  26. WINER, B. J. 1971. Statistical Principles in Experimental Design, 2nd ed. McGraw-Hill, New York.Google Scholar

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • S. M. Jojola-Elverum
    • 1
  • J. A. Shivik
    • 1
  • L. Clark
    • 1
  1. 1.Animal and Plant Health Inspection Service, Wildlife Services, National Wildlife Research CenterUnited States Department of AgricultureFort Collins

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