Abstract
This study investigated the influence of the major anal-gland compounds from the stoat (Mustela erminea) and ferret (M. putorius) in generating an avoidance response by northern pocket gophers (Thomomys talpoides) in tree fruit orchards in the Okanagan Valley of British Columbia, Canada. A secondary objective assessed the impact of additional predator odors on gopher avoidance behavior in laboratory bioassays. In field bioassays, a 1: 1 mixture of 2-propylthietane and 3-propyl-1,2-dithiolane, as well as 3,3-dimethyl-1,2-dithiolane, placed in gopher burrows did not reduce the number of gophers colonizing treatment versus control grids in orchard blocks. However, these predator gophers did dramatically alter the distribution of gophers. Significantly more gophers were captured at perimeter than nonperimeter trap stations on treatment versus control grids in two of three orchards. In all orchards, significantly more gophers were captured at perimeter stations after the predator odors had been placed in burrows than prior to the start of the experiment. Gophers clearly avoided 2,5-dihydro-2,4,5-trimethylthiazoline, a component of fox (Vulpes vulpes) feces, but did not avoid 2,2-dimethylthietane from the mink (M. vison) or 3-methyl-3-butenyl methyl sulfide from fox urine in laboratory bioassays. Poor avoidance was also recorded for 3,3-dimethyl-1,2-dithiolane, although this may be due to the state of polymerization of this compound. An improved formulation is required to dispense these semiochemicals in controlled-release devices within orchards and other forest-agricultural areas.
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References
Anderson, G.G., andKluge, H.A. 1986. Rodent control on agricultural land in British Columbi B.C. Minist. Agric., Victoria, British Columbia. 15 pp.
Anderson, K.K., andBernstein, D.T. 1980. Sulfur compounds in mustelids, pp. 399–406,in D. Cavallini, G.E. Gaull, and V. Zappia (eds.). Natural Sulfur Compounds. Plenum Press, New York.
Barnes, V.G. 1973. Pocket gophers and reforestation in the Pacific Northwest: A problem analysis. U.S. Fish Wildl. Serv., Sci. Rep., Wildl. No. 155. 18 pp.
Barnes, V.G., Anthony, R.M., Evans, J., andLindsey, G.D. 1982. Evaluation of zinc phosphide bait for pocket gopher control on forest land, pp. 219–225,in R.E. Marsh (ed.). Proceedings, Tenth Vertebrate Pest Conference. University of California, Davis.
Brinck, E., Gerell, R., andOdham, G. 1978. Anal pouch secretion in minkMustela vison.Oikos 38:68–75.
Byers, R.E. 1984. Control and management of vertebrate pests in deciduous orchards of the eastern United States.Hortic. Rev. 6:253–285.
Byers, R.E. 1985. Management and control, pp. 621–646,in R.H. Tamarin (ed.). Biology of New WorldMicrotus. Special Publication No. 8. American Society of Mammalogy.
Crouch, G.L. 1982. Pocket gophers and reforestation on western forests.J. For. 80:662–664.
Crump, D.R. 1978. 2-Propylthietane, the major malodorous substance from the anal gland of the stoat.Tetrahedron Lett. 1978:5233–5234.
Crump, D.R. 1980a. Thietanes and dithiolanes from the anal gland of the stoat (Mustela erminea).J. Chem. Ecol. 6:341–347.
Crump, D.R. 1980b. Anal gland secretion of the ferret (Mustela putorious forma furo).J. Chem. Ecol. 6:837–844.
Crump, D.R. 1982. Synthesis of (2S)-2-propylthietane.Aust. J. Chem. 35:1945–1948.
Schildknecht, H., Wilz, L., Enzamann, R., Grund, N., andZiegler, M. 1976. Mustelan, the malodorous substance from the anal gland of the mink (Mustela vison) and polecat (Mustela putorius).Agnew. Chem. Int. Ed. Engl. 15:242–253.
Schildknecht, H., Birkner, C., andKraub, D. 1981. Struktur und Wirkung der Musteliden-Okomone II. Erweiterte Analyse des Analbeutelsekretes des NerzesMustela vison L.,Chem. Ztg. 105:273–286.
Sokolov, V.E., Albone, E.S., Flood, P.F., Heap, P.P., Kagan, M.Z., Vasilieva, V.S., Roznov, V.V., andZinkevich, E.P. 1980. Secretion and secretory tissues of the anal sac of the mink,Mustela vison. Chemical and hisiological studies.J. Chem. Ecol. 6:805–825.
Sullivan, T.P., andCrump, D.R. 1984. Influence of mustelid scent-gland compounds on suppression of feeding by snowshoe hares (Lepus americanus).J. Chem. Ecol. 10:1809–1821.
Sullivan, T.P., andCrump, D.R. 1986a. Avoidance response of pocket gophers (Thomomys talpoides) to mustelid anal gland compounds, pp. 519–531,in D. Duvall, D. Müller-Schwarze, and R.M. Silverstein (eds.). Chemical Signals in Vertebrates IV. Plenum Press, New York.
Sullivan, T.P., andCrump, D.R. 1986b. Feeding responses of snowshoe hares (Lepus americanus) to volatile constituents of red fox (Vulpes vulpes) urine.J. Chem. Ecol. 12:729–739.
Sullivan, T.P., Krebs, J.A., andKluge, H.A. 1987. Survey of mammal damage to tree fruit orchards in the Okanagan Valley of British Columbia.Northwest Sci. 61:23–31.
Sullivan, T.P., Crump, D.R., andSullivan, D.S. 1988. Use of predator odors as repellents to reduce feeding damage by herbivores. III. Montane and Meadow Voles (Microtus montanus andMicrotus pennsylvanicus).J. Chem. Ecol. 14:363–377.
Vernet-Maury, E., Polak, E.H., andDemael, A. 1984. Structure-activity relationship of stress-inducing odorants in the rat.J. Chem. Ecol. 10:1007–1018.
Wilson, S.R., Carmack, M., Novotny, M., Jorgenson, J.W., andWhitten, W.K. 1978. Isopentenyl methyl sulfide. A new terpenoid in the scent mark of the red fox (Vulpes vulpes).J. Org. Chem. 43:4675–4676.
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Sullivan, T.P., Crump, D.R. & Sullivan, D.S. Use of predator odors as repellents to reduce feeding damage by herbivores. J Chem Ecol 14, 379–389 (1988). https://doi.org/10.1007/BF01022553
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DOI: https://doi.org/10.1007/BF01022553