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Discussion of findings relative to meeting objectives
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J. E. Tietge, M. J. Lannoo, V. Beasley, Discussion of Findings Relative to Meeting Objectives (www.im. nbs.gov/naamp3/papers/60df.html), presentation given at the Third Annual Meeting of the North American Amphibian Monitoring Program, 14 November 1996 to 14 February 1997 (www.im.nbs.gov/naamp3/naamp3. html).
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Third Annual Meeting of the North American Amphibian Monitoring Program
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Tietge, J.E.1
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0345570314
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note
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Pond water samples were tested for biocides and PCBs listed under the Environmental Protection Agency standard method 8080 and the following heavy metals: chromium, copper, lead, mercury, and nickel. Analyses were performed by Sequoia Analytical, Redwood City, CA.
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12
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0344708271
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personal communication
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S. J. Kupferberg, personal communication.
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Kupferberg, S.J.1
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0345138779
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note
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Snails (P. tenuis) infected with Alaria or Ribeiroia were collected from California field sites, placed in 50-ml vials of commercial spring water, and allowed to shed cercariae for 8 to 10 hours. Within 1 hour after shedding, emerging cercariae were isolated, counted, and added to 100-ml specimen cups containing individual tadpoles. Tadpoles were exposed to cercariae for 90 min. No cercariae were observed in the specimen cups following the exposure period, suggesting that all had penetrated the tadpoles. The control group tadpoles were placed in specimen cups containing only spring water and returned to their containers after 90 min.
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14
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0000396128
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The experiment began approximately 1.5 weeks after hatching (Gosner Stages 23 through 26). Tadpoles were exposed to trematode cercariae on days 1, 4, 7, and 10 of the experiment. Staging is from K. L. Gosner [Herpetologica 16, 183 (1960)].
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Herpetologica
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, pp. 183
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Gosner, K.L.1
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15
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0003948551
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Cornell Univ. Press, London
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To determine composition of abnormalities, we scored metamorphic frogs for both the number and type of abnormalities. Each abnormality was counted independently so that an individual frog could have more than one abnormality, but abnormalities building off of, or part of, other abnormalities were not considered. For example, an extra leg with a polydactylous foot was counted only as an extra leg, not as both an extra leg and a polydactylous foot. Abnormality categories are adapted from [M. J. Tyler, Ed., Australian Frogs: A Natural History (Cornell Univ. Press, London, 1998), pp. 141-160].
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Australian Frogs: A Natural History
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Tyler, M.J.1
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Ecology
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Gotelli, N.J.2
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0020891787
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T. C. M. Bakker, D. Mazzi, S. Zala, Ecology 78, 1098 (1997); H. Lefcort and A. R. Blaustein, Oikos 74, 469 (1995); J. Moore and N. J. Gotelli, in Parasitism and Host Behaviour, C. J. Barnard and J. M. Behnke, Eds. (Taylor & Francis, London, 1990), pp. 193-229; J. Moore, Ecology 64, 1000 (1983); W. M. Bethel and J. C. Holmes, J. Parasitol. 59, 945 (1973).
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Complex host parasites can mimic both invertebrate and vertebrate host hormones [S. Helluy and J. C. Holmes, Can. J. Zool. 68, 1214 (1990); J. F. Mueller, J. Parasitol. 56, 840 (1970)].
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Complex host parasites can mimic both invertebrate and vertebrate host hormones [S. Helluy and J. C. Holmes, Can. J. Zool. 68, 1214 (1990); J. F. Mueller, J. Parasitol. 56, 840 (1970)].
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Stauffer, J.R.1
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0344708269
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note
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We thank D. Zelmer, P. Basch, D. Barton, M. Poteet, and A. Smyth for assistance with parasite histology and taxonomy; J. Reaser for consultation on the design of field research protocols; N. Van Zwol for laboratory facilities; C. and S. Hoebich for support and encouragement; S. Ptak for statistical recommendations; R. Hershler and L. Kools for snail identifications; S. Khandwala for assistance with field work and resources; Santa Clara County Parks Division for property access; S. Holt, S. Sessions, and M. Scott for technical photography assistance; and P. Basch, A. Blaustein, C. Boggs, G. Daily, P. Ehrlich, E. Fleishman, C. Lunde, P. Vitousek, and C. Wheat for helpful comments on the manuscript.
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