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Ecotoxicology

, Volume 4, Issue 4, pp 258–265 | Cite as

Organochlorine residues in bat guano from nine Mexican caves, 1991

  • Donald R. ClarkJr
  • Arnulfo Moreno-Valdez
  • Miguel A. Mora
Paper

Samples of bat guano, primarily from Mexican free-tailed bats (Tadarida brasiliensis), were collected at nine bat roosts in caves in northern and eastern Mexico and analysed for organochlorine residues. DDE, the most abundant residue found in each cave, was highest (0.99 p.p.m. dry weight) at Ojuela Cave, Durango. Other studies of DDE in bat guano indicate that this concentration is too low to reflect harmful concentrations in the bats themselves. The DDE at Ojuela may represent either lingering residues from use of DDT years ago in the Ojuela area of perhaps depuration loss from migrant bats with summer maternity roost(s) in a DDE-contaminated area such as Carlsbad Cavern, New Mexico. Presence of o,p′-DDT at Tio Bartolo Cave, Nuevo Leon, indicates recent use of DDT, but the concentration of this contaminant was low. Possible impacts on bat colonies of the organophosphorus and carbamate insecticides now in extensive use are unknown.

Keywords

bat guano DDE pesticide residues Mexican caves Mexican free-tailed bat 

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References

  1. Clark, D.R., Jr (1988) Environmental contaminants and the management of bat populations in the United States. In Szaro, R.C., Severson, K.S. and Patton, D.R., eds. Proc. Symp. Manage. Amphibs. Repts. Sm. Mamms. N. Amer., pp. 409–13, Flagstaff, Arizona. USDA Forest Service, Gen. Tech. Rep. RM-166.Google Scholar
  2. Clark, D.R.Jr and Kroll, J.C. (1977) Effects of DDE on experimentally poisoned free-tailed bats (Tadarida brasiliensis): lethal brain concentrations. J. Toxicol. Environ. Health 3, 893–901.Google Scholar
  3. Clark, D.R.Jr and Krynitsky, A.J. (1983) DDT: recent contamination in New Mexico and Arizona? Environment 25, 27–31.Google Scholar
  4. Clark, D.R.Jr, Martin, C.O. and Swineford, D.M. (1975) Organochlorine insecticide residues in the free-tailed bat (Tadarida brasiliensis) at Bracken Cave, Texas. J. Mammal. 56, 429–43.Google Scholar
  5. Clark, D.R.Jr, LaVal, R.K. and Swineford, D.M. (1978) Dieldrin-induced mortality in an endangered species, the gray bat (Myotis grisescens). Science 199, 1357–9.Google Scholar
  6. Clark, D.R.Jr, LaVal, R.K. and Tuttle, M.D. (1982) Estimating pesticide burdens of bats from guano analyses. Bull. Environ. Contam. Toxicol. 29, 214–20.Google Scholar
  7. Clark, D.R.Jr, Bunck, C.M., Cromartie, E. and LaVal, R.K. (1983) Year and age effects on residues of dieldrin and heptachlor in dead gray bats, Franklin County, Missouri-1976, 1977, and 1978. Environ. Toxicol. Chem. 2, 387–93.Google Scholar
  8. Clark, D.R.Jr, Bagley, F.M. and Johnson, W.W. (1988) Northern Alabama colonies of the endangered grey bat Myotis grisescens: organochlorine contamination and mortality. Biol. Conserv. 43, 213–25.Google Scholar
  9. Dwyer, P.D. (1966) The population pattern of Miniopterus schreibersii (Chiroptera) in northeastern New South Wales. Aust. J. Zool. 14, 1073–137.Google Scholar
  10. Geluso, K.N., Altenbach, J.S. and Wilson, D.E. (1976) Bat mortality: pesticide poisoning and migratory stress. Science 194, 184–6.Google Scholar
  11. Geluso, K.N., Altenbach, J.S. and Wilson, D.E. (1981) Organochlorine residues in young Mexican free-tailed bats from several roosts. Am. Midl. Nat. 105, 249–57.Google Scholar
  12. Kunz, T.H. (1974) Feeding ecology of the temperate insectivorous bat Myotis velifer. Ecology 55, 693–711.Google Scholar
  13. Mitchell, H.A. (1963) Respiratory physiology and anatomy in certain members of the Chiropteran family Molossidae. PhD dissertation, University of Arizona.Google Scholar
  14. Moreno-Valdez, A. (1991) Mexican Cave Survey. Technical Report, Bat Conserv. Internat., Inc., Austin, TX.Google Scholar
  15. Moreno-Valdez, A. (1992) Current status of Mexican free-tailed bat colonies (Tadarida brasiliensis mexicana) from Northern Mexico. Bat Res. News 33, 67 (abstract).Google Scholar
  16. Thomas, D.W. and LaVal, R.K. (1988) Survey and census methods. In Kunz, T.H., ed. Ecological and behavioral methods for the study of bats, pp. 77–89. Smithsonian Institution Press, Washington, DC.Google Scholar
  17. Tuttle, M.D. (1976) Population ecology of the gray bat (Myotis grisescens): philopatry, timing and patterns of movement, weight loss during migration, and seasonal adaptive strategies. Occas. Paper Mus. Nat. Hist. Univ. Kansas, 54, 1–38.Google Scholar
  18. White, D.W. and Krynitsky, A.J. (1986) Wildlife in some areas of New Mexico and Texas accumulate elevated DDE residues, 1983. Arch. Environ. Contam. Toxicol. 15, 149–57.Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Donald R. ClarkJr
    • 1
  • Arnulfo Moreno-Valdez
    • 2
  • Miguel A. Mora
    • 1
  1. 1.US National Biological Service, Southern Science Center, Brazos Field Station, c/o Department of Wildlife and Fisheries SciencesTexas A & M UniversityCollege StationUSA
  2. 2.Departmento de BiologiaInstituto Tecnologico de Cd. VictoriaTamaulipasMexico

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