Jim Petranka, UNCA

Publications
The list below reflects how my research interests have changed from the early years (plant ecology) to now (amphibian biology, conservation biology, and wetlands ecology). UNCA undergraduate researchers are in blue.

General Information

Education

Teaching

Research Interests

Publications

UNCA Biology Department

Petranka, J. W., Harp, E. M., Holbrook, C. T., and J. A. Hamel. 2007. Long-term persistence of amphibian populations in a restored wetlands complex. Biological Conservation138:371-380.

Petranka, J. W. 2007. Evolution of complex life cycles of amphibians: bridging the gap between metapopulation dynamics and life history evolution. Evolutionary Ecology 21:751-764.

Sours, G. N. and J. W. Petranka. 2007. Intraguild predation and competition mediate stage-structured interactions between Wood Frog (Rana sylvatica) and Upland Chorus Frog (Pseudacris feriarum) Larvae. Copeia:234-237.

Petranka, J. W. and C. T. Holbrook. 2006. Wetland restoration for amphibians: Should local sites be designed to support metapopulations or patchy populations? Restoration Ecology 14:404-411.

Harp, E. M. and J. W. Petranka. 2006. Ranavirus in wood frogs (Rana sylvatica): Potential sources of transmission within and between ponds. Journal of Wildlife Diseases 42:307-318.

Burley, L. A., Moyer A. T. and J. W. Petranka. 2006. Interactions between wood frogs and spotted salamanders: tadpole density mediates intraguild predation and intra- and interspecific competition. Oecologia 148:641-649.

Petranka, J. W. and C. K. Smith. 2005. A functional analysis of streamside habitat use by southern Appalachian salamanders: Implications for riparian forest management. Forest Ecology and Management 210:443-454.

Holbrook, C. T. and J. W. Petranka. 2004. Ecological interactions between Rana sylvatica and Ambystoma maculatum: Evidence of interspecific competition and facultative intraguild predation. Copeia 2004:932-939.

Petranka, J. W. Smith C. K., and A. F. Scott. 2004. Identifying the minimal demographic unit for monitoring pond-breeding amphibians. Ecological Applications 14:1065-1078.

Petranka, J. W. Kennedy, C. A., and S. M. Murray. 2003. Response of amphibians to restoration of a southern Appalachian wetland: a long-term analysis of community dynamics. Wetlands 23:1030-1042.

Petranka, J. W. Murray, S. M., and C. A. Kennedy. 2003. Response of amphibians to restoration of a southern Appalachian wetland: perturbations confound post-restoration assessment. Wetlands 23:278-290.

Anderson, A. R. and J. W. Petranka. 2003. Odonate predator does not affect hatching time or morphology of embryos of two amphibians. Journal of Herpetology 37:65-71.

Angelon, K. A. and J. W. Petranka. 2002. Chemicals of predatory mosquitofish (Gambusia affinis) influence selection of oviposition site by Culex mosquitoes. Journal of Chemical Ecology:797-806.

Rossell, C. R., Jr., Rossell, I. M., Orraca, M. M., and J. W. Petranka. 2002. Evidence of epizootic disease as the cause of high mortality in a population of eastern box turtles. Herpetological Review 33:99-101.

Petranka, J. W. and S. M. Murray. 2001. Effectiveness of removal sampling for determining salamander density and biomass: A case study in an Appalachian streamside community. Journal of Herpetology 35:36-44.

Moorhead, K. K., Rossell, I. M., Petranka, J. W., and and C. R. Rossell, Jr. Tulula Wetlands mitigation bank. 2001. Ecological Restoration 19:74-80.

Smith, C. K., and J. W. Petranka. 2000. Monitoring terrestrial salamander populations: Repeatability and validity of area-constrained cover object searches. Journal of Herpetology, 34:547-557.

Koenings, C. A., Smith, C. K., Domingue, E. A., and J. W. Petranka. 2000. Desmognathus imitator (Reproduction). Herpetological Review 31:38-39.

Kennedy, C. A., Smith, C. K., Domingue, E. A., and J. W. Petranka. 2000. Desmognathus imitator (Imitator salamander). Reproduction. Herpetological Review 31:38-39.

Starnes, S. M., Kennedy, C. A. , and J. W. Petranka. 2000.Sensitivity of embryos of southern Appalachian amphibians to ambient solar UV-B radiation. Conservation Biology,14:277-282.

Petranka, J. W. and C. A. Kennedy. 1999. Pond tadpoles with generalized morphology: is it time to reconsider their functional roles in aquatic communities? Oecologia 120:621-631.

Rossell, C. R., Jr., Rossell, I. M., Petranka, J. W., and K. K. Moorhead. 1999. Characteristics of a partially disturbed southern Appalachian bog complex. In: Proceedings of the Appalachian Biogeography Symposium, R. P. Eckerlin, ed. Virginia Museum of Natural History Publication, No. 3,pp. 81-89.

Petranka, J. W. 1998. Salamanders of the United States and Canada. Smithsonian Institution Press, Washington, DC. 576 pp.

Petranka, J. W. 1998. Recovery of salamanders following clearcutting in the southern Appalachians: A critique of Ash's (1997) estimates. Conservation Biology 13:203-205.

Petranka, J. W., and L. J. Hayes. 1998. Chemically mediated avoidance of a predatory odonate (Anax junius) by American toad (Bufo americanus) and wood frog (Rana sylvatica) tadpoles. Behavioural Ecology and Sociobiology 42:263-271.

Petranka, J. W., Rushlow, A. W., and M. E. Hopey. 1998. Predation by tadpoles of Rana sylvatica on embryos of Ambystoma maculatum: Implications of ecological role reversals by Rana (predator) and Ambystoma (prey). Herpetologica 54:1-13.

Scott, A. F., Miller, B. T., Brown, M., and J. W. Petranka. 1998. Ambystoma barbouri (Streamside Salamander). Herpetological Review 28:155.

Selby, M. F., Winkel, S. C. and J. W. Petranka. 1996. Geographic uniformity in agonistic behaviors of jordon's salamander. Herpetologica 52:108-115.

Smith, C. K., Petranka, J. W., and R. L. Barwick. 1996a. Desmognathus quadramaculatus (Black-bellied Salamander). Reproduction. Herpetological Review 27:136

Smith, C. K., Petranka, J. W., and R. L. Barwick. 1996b. Desmognathus welteri (Black Mountain Dusky Salamander). Reproduction. Herpetological Review 27:136.

Petranka, J. W. and D. A. G. Thomas. 1995. Explosive breeding reduces egg and tadpole cannibalism in the wood frog, Rana sylvatica. Animal Behaviour 50:731-739.

Kucken, D. J., Davis, J. S., Petranka, J. W. and C. K. Smith. 1994. Anakeesta stream acidification and metal contamination: Effects on a salamander community. Journal of Environmental Quality 23:1311-1317.

Petranka, J. W. 1994. Interference competition in tadpoles: are multiple agents involved? Herpetological Journal 5:206-207.

Petranka, J. W. 1994. Response to impact of timber harvesting on salamanders. Conservation Biology 8:302-304.

Hopey, M. E. and J. W. Petranka. 1994. Restriction of wood frogs to fish-free habitats: how important is adult choice versus direct predation? Copeia 1994:1023-1025.

Petranka, J. W., Boone, S. J., Hopey, M. E., and S. D. Baird, and B. Jennings. 1994. Breeding habitat segregation of wood frogs and American toads: the role of interspecific tadpole predation and adult choice. Copeia 1994:691-697.

Petranka, J. W., Brannon, M. P., Hopey, M. E., and C. K. Smith. 1994. Effects of timber harvesting on low elevation populations of southern Appalachian salamander communities. Forest Ecology and Management 67:135-147.

Biesterfeldt, J. M., Petranka, J. W., and S. Sherbondy. 1993. Prevalence Of chemical interference competition in natural populations of wood frogs, Rana sylvatica. Copeia 1993: 688-695.

Petranka, J. W., Eldridge, M. E., and K. E. Haley. 1993. Effects of timber harvesting of southern Appalachian salamanders. Conservation Biology 7: 363-370.

Petranka, J. W. and K. A. Fakhoury. 1991. Evidence of a chemically-mediated avoidance response of ovipositing insects to bluegills and green frog tadpoles. Copeia 1991: 234-239.

Petranka, J. W. 1990. Observations on nest site selection, nest desertion, and embryonic survival in marbled salamanders. Journal of Herpetology 24: 229-234.

Petranka, J. W. 1990. Caught between a rock and a hard place. Herpetologica 46: 346-350.

Petranka, J. W. 1989. Response of toad tadpoles to conflicting chemical stimuli: predator avoidance versus optimal foraging. Herpetologica 45:283-292.

Petranka, J. W. 1989. Chemical interference competition in tadpoles: does it occur outside laboratory aquaria? Copeia 1989:921-93

Petranka, J. W. 1989. Density-dependent growth and survivorship of larval Ambystoma: evidence from whole-pond manipulations. Ecology 70: 1752-1767.

Petranka, J. W. 1989. Salamanders of Ohio (book review). Copeia 1989:1119-1121.

Kraus, F. and J. W. Petranka. 1988. A new species of Ambystoma from the Ohio River drainage. Copeia 1989:94-110.

Sih, A. and J. W. Petranka. 1988. Optimal foraging in big-mouthed predators: studies of larval amphibians. Behavioral Ecology and Sociobiology 23:335-339.

Kats, L. B., Petranka, J. W., and A. Sih. 1988. Antipredator defenses and the persitence of amphibian larvae with fishes. Ecology 69:1865-1870.

Sih, A., Petranka, J. W., and L. B. Kats. 1988. The dynamics of prey refuge use: a model and tests with sunfish and salamander larvae. The American Naturalist 132:463-483.

Petranka, J. W. and A. Sih. 1987. Habitat duration, length of the larval period, and the evolution of a complex life cycle of an amphibian. Evolution 41:1347-1356.

Petranka, J. W., Sih, A, Kats, L. B., and J. R. Holomuzki. 1987. Stream drift, size-specific predation, and the evolution of ovum size in an amphibian. Oecologia 71:624-630.

Smith, C. K. and J. W. Petranka. 1987. Prey size-distributions and size-specific foraging success of Ambystoma larvae. Oecologia 71:239-244.

Petranka, J. W., Kats, L., and A. Sih. 1987. Predator-prey interactions among fish and amphibians: use of chemical cues to detect predatory fish. Animal Behaviour 35:420-425.

Petranka, J. W. and A. Sih. 1986. Environmental instability, competition, and density-dependent regulation of a salamander in streams. Ecology 67:729-736.

Sih, A. , P. Crowley, M. McPeek, J. Petranka, and K. Strohmeijer. 1985. Predation, competition, and prey communities: a review of field experiments. Annual Review of Ecology and Systematics 16:269-311.

Petranka, J. W. 1985. Does mortality proneness decrease with age in amphibian larvae? Copeia 1985: 1080-1083

Dupre, K. and J. W. Petranka. 1985. Ontogeny of temperature selection in larval amphibians. Copeia 1985: 462-467.

Petranka, J. W. 1984. Breeding migrations, breeding season, clutch size and oviposition of the stream form of Ambystoma texanum. Journal of Herpetology 18:106-112.

Petranka, J. W. 1984. Ontogeny of the diet and feeding behavior of Eurycea bislineata. Journal of Herpetology 18:48-55

Petranka, J. W. 1984. Sources of interpopulational variation in growth response of larval salamanders. Ecology 65:1857-1865.

Petranka, J. W. 1984. Incubation, larval growth, and embryonic and larval survivorship of small-mouthed salamanders (Ambystoma texanum) in streams. Copeia 1984:862-868.

Petranka, J. W. 1983. Fish predation: a factor affecting the spatial distribution of a stream-breeding salamander. Copeia 1983:624-628.

Petranka, J. W. 1982. Observations on courtship in stream-breeding populations of the small-mouthed salamander in central Kentucky. Herpetologica 38:333-336.

Petranka, J. W. 1982. Geographic variation in the mode of reproduction and larval characteristics of the small-mouthed salamander in the east-central United States. Herpetologica 38:252-262.

Petranka, J. W., Just, J. J., and E. C. Crawford, Jr. 1982. Hatching of amphibian embryos: the physiological trigger. Science 217:257-259.

Petranka, J. W. and J. G. Petranka. 1981. On the evolution of nest site selection in the marbled salamander, Ambystoma opacum. Copeia 1981:387-391.

Petranka, J. W. and J. G. Petranka. 1981. Notes on the nesting biology of the marbled salamander, Ambystoma opacum, in the southern portion of its range. Alabama Academy of Sciences 52:20-24.

Warde, W. and J. W. Petranka. 1981. A correction factor table for missing point-center quarter data. Ecology 62:491-494.

Petranka, J. W. and R. Holland. 1980. A quantitative analysis of bottomland communities in south-central Oklahoma. The Southwestern Naturalist 25:207-214.

Petranka, J. W. and J. G. Petranka. 1980. Selected aspects of the larval ecology of the marbled salamander, Ambystoma opacum, in the southern portion of its range. American Midland Naturalist 104:352-363.

Petranka, J. W. 1979. The effects of severe winter weather on Plethodon dorsalis and Plethodon richmondi in central Kentucky. Journal of Herpetology 13:369-370.

Petranka, J. W. and J. K. McPherson. 1979. The role of Rhus copallina in the dynamics of the forest prairie ecotone in north-central Oklahoma. Ecology 60:956-965.

Petranka, J. W. and A. Phillippi. 1978. Observations on the courtship behavior of juvenile Chrysemys concinna and Chrysemys hoyi. Journal of Herpetology 12:417-419.

		Publications The list below reflects how my research interests have changed from the early years (plant ecology) to now (amphibian biology, conservation biology, and wetlands ecology). UNCA undergraduate researchers are in blue.
General Information Education Teaching Research Interests Publications UNCA Biology Department		Petranka, J. W., Harp, E. M., Holbrook, C. T., and J. A. Hamel. 2007. Long-term persistence of amphibian populations in a restored wetlands complex. Biological Conservation138:371-380. Petranka, J. W. 2007. Evolution of complex life cycles of amphibians: bridging the gap between metapopulation dynamics and life history evolution. Evolutionary Ecology 21:751-764. Sours, G. N. and J. W. Petranka. 2007. Intraguild predation and competition mediate stage-structured interactions between Wood Frog (Rana sylvatica) and Upland Chorus Frog (Pseudacris feriarum) Larvae. Copeia:234-237. Petranka, J. W. and C. T. Holbrook. 2006. Wetland restoration for amphibians: Should local sites be designed to support metapopulations or patchy populations? Restoration Ecology 14:404-411. Harp, E. M. and J. W. Petranka. 2006. Ranavirus in wood frogs (Rana sylvatica): Potential sources of transmission within and between ponds. Journal of Wildlife Diseases 42:307-318. Burley, L. A., Moyer A. T. and J. W. Petranka. 2006. Interactions between wood frogs and spotted salamanders: tadpole density mediates intraguild predation and intra- and interspecific competition. Oecologia 148:641-649. Petranka, J. W. and C. K. Smith. 2005. A functional analysis of streamside habitat use by southern Appalachian salamanders: Implications for riparian forest management. Forest Ecology and Management 210:443-454. Holbrook, C. T. and J. W. Petranka. 2004. Ecological interactions between Rana sylvatica and Ambystoma maculatum: Evidence of interspecific competition and facultative intraguild predation. Copeia 2004:932-939. Petranka, J. W. Smith C. K., and A. F. Scott. 2004. Identifying the minimal demographic unit for monitoring pond-breeding amphibians. Ecological Applications 14:1065-1078. Petranka, J. W. Kennedy, C. A., and S. M. Murray. 2003. Response of amphibians to restoration of a southern Appalachian wetland: a long-term analysis of community dynamics. Wetlands 23:1030-1042. Petranka, J. W. Murray, S. M., and C. A. Kennedy. 2003. Response of amphibians to restoration of a southern Appalachian wetland: perturbations confound post-restoration assessment. Wetlands 23:278-290. Anderson, A. R. and J. W. Petranka. 2003. Odonate predator does not affect hatching time or morphology of embryos of two amphibians. Journal of Herpetology 37:65-71. Angelon, K. A. and J. W. Petranka. 2002. Chemicals of predatory mosquitofish (Gambusia affinis) influence selection of oviposition site by Culex mosquitoes. Journal of Chemical Ecology:797-806. Rossell, C. R., Jr., Rossell, I. M., Orraca, M. M., and J. W. Petranka. 2002. Evidence of epizootic disease as the cause of high mortality in a population of eastern box turtles. Herpetological Review 33:99-101. Petranka, J. W. and S. M. Murray. 2001. Effectiveness of removal sampling for determining salamander density and biomass: A case study in an Appalachian streamside community. Journal of Herpetology 35:36-44. Moorhead, K. K., Rossell, I. M., Petranka, J. W., and and C. R. Rossell, Jr. Tulula Wetlands mitigation bank. 2001. Ecological Restoration 19:74-80. Smith, C. K., and J. W. Petranka. 2000. Monitoring terrestrial salamander populations: Repeatability and validity of area-constrained cover object searches. Journal of Herpetology, 34:547-557. Koenings, C. A., Smith, C. K., Domingue, E. A., and J. W. Petranka. 2000. Desmognathus imitator (Reproduction). Herpetological Review 31:38-39. Kennedy, C. A., Smith, C. K., Domingue, E. A., and J. W. Petranka. 2000. Desmognathus imitator (Imitator salamander). Reproduction. Herpetological Review 31:38-39. Starnes, S. M., Kennedy, C. A. , and J. W. Petranka. 2000.Sensitivity of embryos of southern Appalachian amphibians to ambient solar UV-B radiation. Conservation Biology,14:277-282. Petranka, J. W. and C. A. Kennedy. 1999. Pond tadpoles with generalized morphology: is it time to reconsider their functional roles in aquatic communities? Oecologia 120:621-631. Rossell, C. R., Jr., Rossell, I. M., Petranka, J. W., and K. K. Moorhead. 1999. Characteristics of a partially disturbed southern Appalachian bog complex. In: Proceedings of the Appalachian Biogeography Symposium, R. P. Eckerlin, ed. Virginia Museum of Natural History Publication, No. 3,pp. 81-89. Petranka, J. W. 1998. Salamanders of the United States and Canada. Smithsonian Institution Press, Washington, DC. 576 pp. Petranka, J. W. 1998. Recovery of salamanders following clearcutting in the southern Appalachians: A critique of Ash's (1997) estimates. Conservation Biology 13:203-205. Petranka, J. W., and L. J. Hayes. 1998. Chemically mediated avoidance of a predatory odonate (Anax junius) by American toad (Bufo americanus) and wood frog (Rana sylvatica) tadpoles. Behavioural Ecology and Sociobiology 42:263-271. Petranka, J. W., Rushlow, A. W., and M. E. Hopey. 1998. Predation by tadpoles of Rana sylvatica on embryos of Ambystoma maculatum: Implications of ecological role reversals by Rana (predator) and Ambystoma (prey). Herpetologica 54:1-13. Scott, A. F., Miller, B. T., Brown, M., and J. W. Petranka. 1998. Ambystoma barbouri (Streamside Salamander). Herpetological Review 28:155. Selby, M. F., Winkel, S. C. and J. W. Petranka. 1996. Geographic uniformity in agonistic behaviors of jordon's salamander. Herpetologica 52:108-115. Smith, C. K., Petranka, J. W., and R. L. Barwick. 1996a. Desmognathus quadramaculatus (Black-bellied Salamander). Reproduction. Herpetological Review 27:136 Smith, C. K., Petranka, J. W., and R. L. Barwick. 1996b. Desmognathus welteri (Black Mountain Dusky Salamander). Reproduction. Herpetological Review 27:136. Petranka, J. W. and D. A. G. Thomas. 1995. Explosive breeding reduces egg and tadpole cannibalism in the wood frog, Rana sylvatica. Animal Behaviour 50:731-739. Kucken, D. J., Davis, J. S., Petranka, J. W. and C. K. Smith. 1994. Anakeesta stream acidification and metal contamination: Effects on a salamander community. Journal of Environmental Quality 23:1311-1317. Petranka, J. W. 1994. Interference competition in tadpoles: are multiple agents involved? Herpetological Journal 5:206-207. Petranka, J. W. 1994. Response to impact of timber harvesting on salamanders. Conservation Biology 8:302-304. Hopey, M. E. and J. W. Petranka. 1994. Restriction of wood frogs to fish-free habitats: how important is adult choice versus direct predation? Copeia 1994:1023-1025. Petranka, J. W., Boone, S. J., Hopey, M. E., and S. D. Baird, and B. Jennings. 1994. Breeding habitat segregation of wood frogs and American toads: the role of interspecific tadpole predation and adult choice. Copeia 1994:691-697. Petranka, J. W., Brannon, M. P., Hopey, M. E., and C. K. Smith. 1994. Effects of timber harvesting on low elevation populations of southern Appalachian salamander communities. Forest Ecology and Management 67:135-147. Biesterfeldt, J. M., Petranka, J. W., and S. Sherbondy. 1993. Prevalence Of chemical interference competition in natural populations of wood frogs, Rana sylvatica. Copeia 1993: 688-695. Petranka, J. W., Eldridge, M. E., and K. E. Haley. 1993. Effects of timber harvesting of southern Appalachian salamanders. Conservation Biology 7: 363-370. Petranka, J. W. and K. A. Fakhoury. 1991. Evidence of a chemically-mediated avoidance response of ovipositing insects to bluegills and green frog tadpoles. Copeia 1991: 234-239. Petranka, J. W. 1990. Observations on nest site selection, nest desertion, and embryonic survival in marbled salamanders. Journal of Herpetology 24: 229-234. Petranka, J. W. 1990. Caught between a rock and a hard place. Herpetologica 46: 346-350. Petranka, J. W. 1989. Response of toad tadpoles to conflicting chemical stimuli: predator avoidance versus optimal foraging. Herpetologica 45:283-292. Petranka, J. W. 1989. Chemical interference competition in tadpoles: does it occur outside laboratory aquaria? Copeia 1989:921-93 Petranka, J. W. 1989. Density-dependent growth and survivorship of larval Ambystoma: evidence from whole-pond manipulations. Ecology 70: 1752-1767. Petranka, J. W. 1989. Salamanders of Ohio (book review). Copeia 1989:1119-1121. Kraus, F. and J. W. Petranka. 1988. A new species of Ambystoma from the Ohio River drainage. Copeia 1989:94-110. Sih, A. and J. W. Petranka. 1988. Optimal foraging in big-mouthed predators: studies of larval amphibians. Behavioral Ecology and Sociobiology 23:335-339. Kats, L. B., Petranka, J. W., and A. Sih. 1988. Antipredator defenses and the persitence of amphibian larvae with fishes. Ecology 69:1865-1870. Sih, A., Petranka, J. W., and L. B. Kats. 1988. The dynamics of prey refuge use: a model and tests with sunfish and salamander larvae. The American Naturalist 132:463-483. Petranka, J. W. and A. Sih. 1987. Habitat duration, length of the larval period, and the evolution of a complex life cycle of an amphibian. Evolution 41:1347-1356. Petranka, J. W., Sih, A, Kats, L. B., and J. R. Holomuzki. 1987. Stream drift, size-specific predation, and the evolution of ovum size in an amphibian. Oecologia 71:624-630. Smith, C. K. and J. W. Petranka. 1987. Prey size-distributions and size-specific foraging success of Ambystoma larvae. Oecologia 71:239-244. Petranka, J. W., Kats, L., and A. Sih. 1987. Predator-prey interactions among fish and amphibians: use of chemical cues to detect predatory fish. Animal Behaviour 35:420-425. Petranka, J. W. and A. Sih. 1986. Environmental instability, competition, and density-dependent regulation of a salamander in streams. Ecology 67:729-736. Sih, A. , P. Crowley, M. McPeek, J. Petranka, and K. Strohmeijer. 1985. Predation, competition, and prey communities: a review of field experiments. Annual Review of Ecology and Systematics 16:269-311. Petranka, J. W. 1985. Does mortality proneness decrease with age in amphibian larvae? Copeia 1985: 1080-1083 Dupre, K. and J. W. Petranka. 1985. Ontogeny of temperature selection in larval amphibians. Copeia 1985: 462-467. Petranka, J. W. 1984. Breeding migrations, breeding season, clutch size and oviposition of the stream form of Ambystoma texanum. Journal of Herpetology 18:106-112. Petranka, J. W. 1984. Ontogeny of the diet and feeding behavior of Eurycea bislineata. Journal of Herpetology 18:48-55 Petranka, J. W. 1984. Sources of interpopulational variation in growth response of larval salamanders. Ecology 65:1857-1865. Petranka, J. W. 1984. Incubation, larval growth, and embryonic and larval survivorship of small-mouthed salamanders (Ambystoma texanum) in streams. Copeia 1984:862-868. Petranka, J. W. 1983. Fish predation: a factor affecting the spatial distribution of a stream-breeding salamander. Copeia 1983:624-628. Petranka, J. W. 1982. Observations on courtship in stream-breeding populations of the small-mouthed salamander in central Kentucky. Herpetologica 38:333-336. Petranka, J. W. 1982. Geographic variation in the mode of reproduction and larval characteristics of the small-mouthed salamander in the east-central United States. Herpetologica 38:252-262. Petranka, J. W., Just, J. J., and E. C. Crawford, Jr. 1982. Hatching of amphibian embryos: the physiological trigger. Science 217:257-259. Petranka, J. W. and J. G. Petranka. 1981. On the evolution of nest site selection in the marbled salamander, Ambystoma opacum. Copeia 1981:387-391. Petranka, J. W. and J. G. Petranka. 1981. Notes on the nesting biology of the marbled salamander, Ambystoma opacum, in the southern portion of its range. Alabama Academy of Sciences 52:20-24. Warde, W. and J. W. Petranka. 1981. A correction factor table for missing point-center quarter data. Ecology 62:491-494. Petranka, J. W. and R. Holland. 1980. A quantitative analysis of bottomland communities in south-central Oklahoma. The Southwestern Naturalist 25:207-214. Petranka, J. W. and J. G. Petranka. 1980. Selected aspects of the larval ecology of the marbled salamander, Ambystoma opacum, in the southern portion of its range. American Midland Naturalist 104:352-363. Petranka, J. W. 1979. The effects of severe winter weather on Plethodon dorsalis and Plethodon richmondi in central Kentucky. Journal of Herpetology 13:369-370. Petranka, J. W. and J. K. McPherson. 1979. The role of Rhus copallina in the dynamics of the forest prairie ecotone in north-central Oklahoma. Ecology 60:956-965. Petranka, J. W. and A. Phillippi. 1978. Observations on the courtship behavior of juvenile Chrysemys concinna and Chrysemys hoyi. Journal of Herpetology 12:417-419.