Abstract
We investigated the validity and distribution of the subspecies Acris crepitans blanchardi. Currently Acris crepitans contains three subspecies: the northern cricket frog (A. c. crepitans), Blanchards cricket frog (A. c. blanchardi) and the coastal cricket frog (A. c. paludicola). We examined the diagnostic characters of 1441 specimens from the center of the range (Arkansas, Missouri, and Mississippi), 161 specimens from the extreme northwest portion of this species range (South Dakota and Nebraska), and 85 from the extreme southeast portion of the species range (Florida and Georgia). Discriminate analysis was applied to the tabulated data and no significant differences between portions of the range could be discerned. No concrete evidence was found to support designation of specimens from South Dakota and Nebraska or from Smallens Cave (origin of the type specimen) as A. c. blanchardi. This information places the subspecies A. c. blanchardi in a status of doubtful validity suggesting that no delineation between A. c. blanchardi and A. c. crepitans should be made at this time.
References
Anonymous. (1998) Northern (Blanchards) Cricket Frog (Acris crepitans blanchardi). Canadian Wildlife Service Website. Ottawa, Ontario.
http://www.cws-scf.ed.gc.ca/esrenew/RENEW97_98/eng/species/nofrog.html, (20 July 2003)
Burkett, R.D. (1984) An ecological study of the cricket frog, Acris crepitans, in northeastern Kansas. In: Seigel, R.A., Hunt, L.E., Knight, J.L, Malaret, L. & Zuschiag, N.L. (Eds.), Vertebrate Ecology and Systematics A tribute to Henry S. Fitch. Museum of Natural History, University of Kansas. Lawrence, KS, pp. 89ñ103.
Capranica, R.R., Frishkoff, L.S., Nevo, E. (1973) Encoding of geographic dialects in the auditory system of the cricket frog. Science, 182, 1272ñ1274.
Dessauer, H.C. & Nevo, E. (1969) Geographic variation of blood and liver proteins in cricket frogs. Biochemical Genetics, 3, 171ñ188.
Gloyd, H.K. (1940) Frank Nelson Blanchard, Scholar and Teacher. Herpetologica, 1(8), 197-211.
Gorman, W.L. & Gaines, M.S. (1987) Patterns of genetic variation in the cricket frog, Acris crepitans, in Kansas. Copeia, 1987 (2), 352-360.
Gray, R.H. (1983) Seasonal, annual and geographical variation in color morph frequencies of the Cricket Frog (Acris crepitans) in Illinois. Copeia, 1983(2), 300-311.
Harper, F. (1947) A new cricket frog (Acris) from the Middle Western States. Proceedings of the Biological Society of Washington, 60, 39-40.
Harris, R.J. (2001) A Primer of Multivariate Statistics. 3rd ed. Lawrence Erlbaum Associates, Publishers. Mahwah, NJ. 286 pp.
Hay, R. (1998) Blanchards cricket frogs in Wisconsin: A status report. In: Lannoo, M.J. Status and Conservation of Midwestern Amphibians. University of Iowa Press, Iowa City, pp. 79-82.
Holliday, P.P. (no date). Francis Harper and the naturalists that saved the swamp. Sherpa Guides, Lenz Design. Decatur, Georgia.
http://sherpaguides.com/georgia/okefenokee_swamp/sidebars/francis_harper.html (21 June 2004)
Huberty, C.J. (1975) Discriminate analysis. Review of Educational Research, 45, 543-598.
Huberty, C.J. (1984) Issues in the use and interpretation of discriminate analysis. Psychological Bulletin, 95, 156-171.
Lannoo, M.J. (1998) Status and Conservation of Midwestern Amphibians. University of Iowa Press. Iowa City, Iowa, 507 pp.
Mayr, E. (1969) Principles of Systematic Zoology. McGraw-Hill Book Company, New York, NY, 428 pp.
McCallum, M.L. (2003) Reproductive Ecology and Taxonomic Status of Acris crepitans blanchardi with additional investigations on the Hamilton and Zuk Hypothesis. Arkansas State University Ph.D. Dissertation, State University, Arkansas, 150 pp.
McClelland, B.E., Wilczynski, W. & Ryan, M.J. (1998) Intraspecific variation in laryngeal and ear morphology in male cricket frogs (Acris crepitans). Biological Journal of the Linnaean Society, 63, 51ñ67.
Moore, D.S. (1997) Molecular analyses of temperate hylid frogs using the mitochondrial cytochrome b gene. University of Alabama-Birmingham Ph.D. Dissertation, 163 pp.
Mount, R. (1975) Amphibians and Reptiles of Alabama. University of Auburn Press Auburn, AL, 160 pp.
Neill, W.T. (1950) Taxonomy, nomenclature, and distribution of southeastern cricket frogs, genus Acris. The American Midland Naturalist, 43(1), 152ñ156.
Nevo, E. (1973) Adaptive variation in size of cricket frogs. Ecology, 54(6), 1271ñ1281.
Nevo, E. and Capranica, E.R. (1985) Evolutionary origin of ethological reproductive isolation in cricket frogs. In: Hecht, M.K., Wallace, B. & Prance, G.T. (Eds.), Evolutionary Biology, Vol 19. Plenum Press, New York. pp. 147ñ214.
Regan, G.T. (1972) Natural and man-made conditions determining the range of Acris. Dissertation Abstracts, 33B(6), 2564ñ2565.
Ryan, M.J. & Wilczynski. W. (1988) Coevolution of sender and receiver: effect on local mate preference in cricket frogs. Science, 240, 1786ñ1788.
Salthe, S.N. & Nevo, E. (1969). Geographic variation of lactate dehydrogenase in the cricket frog, Acris crepitans. Biochemical Genetics, 3, 335-341.
Trauth, S.E., Robison, H.W. & Plummer, M.A. (2004) The Amphibians and Reptiles of Arkansas. University of Arkansas Press. Fayetteville, Arkansas, 268 pp
Ward, R., Rutledge, C.J. & Zimmerman, E.G. (1987) Genetic variation and population subdivision in the cricket frog Acris crepitans. Biochemical Systematics and Ecology, 15 (3), 377ñ384.
Weller, W.F. & Green, D.M. (1997) Checklist of Canadian amphibians. Herpetological Conservation, 1, 309ñ328.