Color Pattern Dimorphism in the Colubrid Snake Oligodon purpurascens (Schlegel, 1837) (Reptilia: Squamata)

Johan van Rooijen, Perry L. Wood, Jr., Jesse L. Grismer, L. Lee Grismer, Wolfgang Grossmann

Abstract


The Southeast Asian colubrid snake Oligodon purpurascens (Schlegel, 1837) exhibits a strongly bimodal variation in color pattern. Two competing hypotheses can be put forward to explain the coexistence of the two phenotypes. According to the first hypothesis, the two phenotypes are the result of a color pattern polymorphism within Oligodon purpurascens. According to the second, the two phenotypes in fact represent distinct, sympatrically occurring, taxa. In this study, multivariate analyses of morphological data as well as a phylogenetic analysis of a small segment of mitochondrial DNA were used to assess the likelihood of each of these hypotheses. The results strongly support the polymorphism-hypothesis. The incidence of each phenotype in various areas suggests that negative frequency-dependent selection maintains the coexistence of the two phenotypes.

Keywords


color pattern polymorphism; Oligodon purpurascens

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References


Chan-ard T., Grossmann W., Gumprecht A., and Schultz K.-D. (1999), Amphibians and Reptiles of Peninsular Malaysia and Thailand. An Illustrated Checklist, Bushmaster publications, Wuerselen, Germany.

Cockburn A. (1991), An Introduction to Evolutionary Ecology, Blackwell scientific publications, Oxford.

Coleman K., Rothfuss L. A., Ota H., and Kardong K. V. (1993), «Kinematics of egg-eating by the specialized Taiwan snake Oligodon formosanus (Colubridae)», J. Herpetol., 27, 320 – 327.

Cramer D. (2003), Advanced Quantitative Data Analysis, Open University Press, Philadelphia.

Dowling H. G. (1951), «A proposed standard system of counting ventrals in snakes», Br. J. Herpetol., 1, 97 – 99.

Gray S. M. and McKinnon J. S. (2006), «Linking color polymorphism maintenance and speciation», Trends Ecol. Evol., 22, 71 – 79.

Grismer J. L., Grismer L. L., Das I., Yaakob N. S., Liat L. B., Leong T. M., Youmans T. M., and Kaiser H. (2004), «Species diversity and checklist of the herpetofauna of Pulau Tioman, Peninsular Malaysia, with a preliminary overview of habitat utilization», Asiatic Herpetol. Res., 10, 247 – 279.

How R. A., Schmitt L. H., and Maharadatunkamsi (1996), «Geographical variation in the genus Dendrelaphis (Serpentes: Colubridae) within the islands of south-eastern Indonesia», J. Zool. Lond., 238, 351 – 363.

Jones J. S., Leith B. H., and Rawlings P. (1977), «Polymorphism in Cepaea; a problem with too many solutions?», Annu. Rev. Ecol. Evol. Syst., 8, 109 – 143.

Kark S., Warburg I., and Werner Y. L. (1997), «Polymorphism in the snake Psammophis schokari on both sides of the desert edge in Israel and Sinai», J. Arid Environ., 37, 513 – 527.

Leviton A. E., Gibbs R. H., Heal E., and Dawson C. E. (1985), «Standards in herpetology and ichthyology: part 1. Standard symbolic codes for institutional resource collections in herpetology and ichthyology», Copeia, 1985, 802 – 832.

Malkmus R., Manthey U., Vogel G., Hoffmann P., and Kosuch J. (2002), Amphibians and Reptiles of Mount Kinabalu (North Borneo), A.R.G. Gantner Verlag KG, Ruggel.

Manthey U. and Grossmann W. (1997), Amphibien und Reptilien Südostasiens, Natur- und Tier-Verlag, Münster.

Maxwell S. E. and Delaney H. D. (1990), Designing Experiments and Analyzing Data, Wadsworth Inc., California, USA.

Olendorf R., Rodd H. F., Punzalan D., Houde A. E., Hurt C., Reznick D. N., and Hughes K. (2006), «Frequency dependent survival in natural guppy populations», Nature, 441, 633 – 636.

Palumbi S. R., Martim A. P., Romano S., McMillian W. O., Stice L., and Grabowski G. (1991), The Simple Fool’s Guide to PCR, Dept. of Zoology and Kewalo Marine Lab., Honolulu, Hawaii, USA.

Peters J. A. (1964), Dictionary of Herpetology: a Brief and Meaningful Definition of Words and Terms Used in Herpetology, Hafner Publ. Co., New York, NY, USA.

Schlegel H. (1837), «Essai sur la physionomie des Serpents», in: La Haye, J. Kips, J. HZ. Et W. P. van Stockum (eds.).

Smith M. A. (1943), The fauna of British India, Ceylon and Burma. Reptilia and Amphibia. Vol. 3. Serpentes, Taylor & Francis, London.

Stuebing R. B. and Inger R. F. (1999), A Field Guide to the Snakes of Borneo, Natural History Publications (Borneo), Kota Kinabalu.

Swafford D. L. (2002), PAUP*: Phylogenetic Analysis Using Parsimony (and other methods) 4.0b10, Sinauer Associates, Sunderland, MA, USA.

Thorpe R. S. (1975), «Quantitative handling of characters useful in snake systematics with particular reference to intraspecific variation in the ringed snakes Natrix natrix (L.)», Biol. J. Linn. Soc., 7, 27 – 43.

Thorpe R. S. (1983), «A biometric study of the effects of growth on the analysis of geographic variation: tooth number in green geckos (Reptilia: Phelsuma)», J. Zool. Lond., 201, 13 – 26.

Tillack F. and Günther R. (2009), «Revision of the species of Oligodon from Sumatra and adjacent islands, with comments on the taxonomic status of Oligodon subcarinatus (Günther, 1872) and Oligodon annulifer (Boulenger, 1893) from Borneo (Reptilia, Squamata, Colubridae)», Russ. J. Herpetol., 16(4), 265 – 294.

Tweedie M. W. F. (1983), The Snakes of Malaya, Singapore National Printers Ltd., Singapore.

Van Rooijen J. and Van Rooijen M. (2007), «The landsnakes of the Santubong Peninsula, Sarawak, Borneo: a preliminary list of species with natural history notes», Russ. J. Herpetol., 14(1), 27 – 38.

Wallach V. and Bauer A. M. (1996), «On the status of Simotes semicinctus Peters, 1862 (Serpentes: Colubridae)», Hamadryad, 21, 13 – 18.

Zweifel R. G. (1981), «Color pattern morphs of the kingsnake (Lampropeltis getulus) in southern California: distribution and evolutionary status», Bull. S. Calif. Acad. Sci., 80, 70 – 81.




DOI: https://doi.org/10.30906/1026-2296-2011-18-3-215-220

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