Assessment of rates of deformity in wild frog populations using in situ cages: a case study of Leopard Frogs (Rana pipiens) in Ontario, Canada

References

• ANKLEY, G. T., TIETGE, J. E., DEFOE, D. L., JENSEN, K. M., HOLCOMBE, G. W, DURHAN, E. J. and DIAMOND, S. A. 1998, Effects of ultraviolet light and methoprene on survival and development of Rana pipiens. Environmental Toxicology and Chemistry, 17, 2530–2542.
   Web of Science ®Google Scholar
• BLAUSTEIN, A. R., EDMOND, B., KIESECKER, J. M., BEATTY, J. J. and HOKIT, D. G. 1995, Ambient ultraviolet radiation causes mortality in salamander eggs. Ecological Applications, 5, 740-743. BORKIN, L. J. and Pixtmix, M. M. 1986, The occurrence of polymely and polydactyly in natural populations of anurans of the USSR. Amphibia-Reptilia, 7,205–216.
   Google Scholar
• BURGGREN, W. W. and JUST, J. J. 1992, Developmental changes in physiological systems. In Environmental Physiology of the Amphibians, M. E. Feder and W. W Burggren, eds (Chicago: University of Chicago Press), pp. 467–530.
   Google Scholar
• CLARK, K. L. and HALL, R. J. 1985, Effects of elevated hydrogen ion and aluminum concentrations on the survival of amphibian embryos and larvae. Canadian Journal of Zoology, 63, 116–123.
   Web of Science ®Google Scholar
• COOKE, A. S. 1981, Tadpoles as indicators of harmful levels of pollution in the field. Environmental Pollution, 25A, 123–133.
   Google Scholar
• CORN, P. S. 1998, Effects of ultraviolet radiation on boreal toads in Colorado. Ecological Applications, 8, 18–26.
   Web of Science ®Google Scholar
• DUBOIS, A. 1979, Anomalies and mutations in natural populations of Rana 'esculenta' complex (Amphibia, Anura). Mitt eilungen aus den Zoologischen Museum in Berlin, 55, 59–87.
   Google Scholar
• FLORES-NAVA, A. and VERA-MUNOZ, P. 1999, Growth, metamorphosis and feeding behaviour of Rana catesbeiana Shaw 1 802 tadpoles at different rearing densities. Aquaculture Research, 30, 341-347. FREDA, J. and MCDONALD, D. G. 1993, Toxicity of amphibian breeding ponds in the Sudbury region. Canadian Journal of Fisheries and Aquatic Sciences, 50, 1497–1503.
   Google Scholar
• FORT, D. J., PROPST, T. L., STOVER, E. L., HELGEN, J. C., LEVEY, R. B., GALLAGHER, K. and BURKHART, J. G. 1999, Effects of pond water, sediment, and sediment extracts from Minnesota and Vermont, USA, on early development and metamorphosis of Xenopus. Environmental Toxicology and Chemistry, 18,2305–2315.
   PubMed Web of Science ®Google Scholar
• GASCON, C. 1995, Tropical larval anuran fitness in the absence of direct effects of predation and competition. Ecology, 76, 2222–2229.
   Web of Science ®Google Scholar
• GOSNER, K. L. 1960, A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica, 16, 183–190.
   Google Scholar
• HANSEN, L. J. 1998, Environmental stochasticity and amphibian survival in California: reciprocal transplants and exposure to UV-B and other stresses (a narrative on field work). In Ultraviolet Radiation, Amphibian Decline and Local Population Adaptation. Unpubl. PhD Dissertation, University of California, Davis.
   Google Scholar
• HARRIS, M. L. and BOGART, J. P. 1997, A cage for evaluation of in situ water quality using frog eggs and tadpoles. Herpetological Review, 28, 134–135.
   Google Scholar
• HARRIS, M. L., BISHOP, C. A., STRUGER, J., RIPLEY, B. and BOGART, J. P. 1998, The functional integrity of northern leopard frog (Rana pipiens) and green frog (Rana clamitans) populations in orchard wetlands. II. Effects of pesticides and eutrophic conditions on early life stage development. Environmental Toxicology and Chemistry, 17, 1351–1363.
   Web of Science ®Google Scholar
• HARRIS, M. L., CHORA, L., BISHOP, C. A. and BOGART, J. P 2000, Species- and age-related differences in responses to pesticide exposure of two amphibians, Rana pipiens and Bufo americanus. Bulletin of Environmental Contamination and Toxicology, 64, 263–270.
   PubMed Web of Science ®Google Scholar
• JOHNSON, P T. J., LUNDE, K. B., RITCHIE, E. G. and LAUNER, A. E. 1999, The effect of trematode infection on amphibian limb development and survivorship. Science, 284, 802–804.
   Google Scholar
• KUPFERBERG, S. J., MARKS, J. C. and POWER, M. E. 1994, Effects of variation in natural algal and detrital diets on larval anuran (Hyla regilla) life-history traits. Copeia, 1994, 446–457.
   Google Scholar
• LIZANA, M. and PEDRAZA, E. M. 1998, The effects of UV-B radiation on toad mortality in mountainous areas of central Spain. Conservation Biology, 12,703–707.
   Web of Science ®Google Scholar
• MATERNA, E. J., RABENI, C. E and LAPOINT, T. W. 1995, Effects of the synthetic pyrethroid insecticide, esfenvalerate, on larval leopard frogs (Rana spp.). Environmental Toxicology and Chemistry, 14, 613–622.
   Web of Science ®Google Scholar
• MEYER-ROCHOW, V. B. and ASASHIMA, M. 1988, Naturally occurring morphological abnormalities in wild populations of the Japanese newt Cynops pyrrhogas ter (Salamandridae; Urodela; Amphibia). Zoologischer, Anzeiger, 221, 70–80.
   Google Scholar
• NORTHERN PRAIRIE WILDLIFE RESEARCH CENTRE 1997, North American Reporting Centre for Amphibian Malformations (Jamestown, ND: NPWRC). Http://www.npwrc.usgs.govinarcam (version 18Jun99).
   Google Scholar
• OUELLET, M., BONIN, J., RODRIGUE, J., DESGRANGES, J.-L. and LAIR, S. 1997, Hindlimb deformities (ectromelia, ectrodactyly) in free-living anurans from agricultural habitats. Journal of Wildlife Diseases, 33, 95–104.
   Google Scholar
• OVASKA, K., DAVIS, T. M. and NOVALES FLAMARIQUE, I. 1997, Hatching success and larval survival of the frogs Hyla regilla and Rana aurora under ambient and artificially enhanced solar ultraviolet radiation. Canadian Journal of Zoology, 75, 1081–1088.
   Web of Science ®Google Scholar
• ROWE, C. L., KINNEY, O. M. and CONGDON, J. D. 1998, Oral deformities in tadpoles of the bullfrog (Rana catesbeiana) caused by conditions in a polluted habitat. Copeia, 1998, 244–246.
   Google Scholar
• SCHMIDT, C. W 1997, Amphibian deformities continue to puzzle researchers. Environmental Science and Technology, 31A, 324–326.
   Google Scholar
• SESSIONS, S. K. and RUTH, S. B. 1990, Explanation for naturally occurring supernumerary limbs in amphibians. Journal of Experimental Zoology, 254, 38–47.
   PubMedGoogle Scholar
• SESSIONS, S. K., FRANSSEN, R. A. and HORNER, V. L. 1999, Morphological clues from multilegged frogs: are retinoids to blame? Science, 284, 800–802.
   Google Scholar
• TEJEDO, M. and REQUES, R. 1994, Does larval growth history determine timing of metamorphosis in anurans? A field experiment. Herpetologica, 50, 113–118.
   Web of Science ®Google Scholar
• VAN VALEN, L. 1974, A natural model for the origin of some higher taxa. Journal of Herpetology, 8, 109–121.
   Google Scholar
• WASSERSIIG, R. J. 1997, Assessing and controlling amphibian populations from the larval perspective. In Amphibians in Decline: Canadian Studies of a Global Problem. Herpetological Conservation No. One, D. M. Green, ed. (Saint Louis: Society for the Study of Amphibians and Reptiles). pp. 271–281.
   Google Scholar
• ZAR, J. H. 1984, Biostatistical Analysis (Englewood Cliffs, NJ: Prentice-Hall).
   Google Scholar