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DOI: http://dx.doi.org/10.11646/zootaxa.2765.1.5

Philosophically speaking, how many species concepts are there?

JOHN S. WILKINS

Abstract


It’s an old question in biology: what is a species? Many different answers have been given over the years, and there are indefinitely many “definitions” in the literature. Adding to R. L. Mayden’s list of 22 definitions (Mayden, 1997) , I counted 26 in play since the Modern Synthesis (2009a), and a new one, which I call the “polyphasic” concept (basically a consilience of many lines of morphological, ecological, genetic, and physiological evidence), has been implicitly extended from bacterial and other microbial contexts to macrobial species, although the terminology has not yet been transplanted (Colwell, 1970; Vandamme et al., 1996). However, on another count there are seven “basic” species concepts: agamospecies (asexuals), biospecies (reproductively isolated sexual species), ecospecies (ecological niche occupiers), evolutionary species (evolving lineages), genetic species (common gene pool), morphospecies (species defined by their form, or phenotypes), and taxonomic species (whatever a taxonomist calls a species).


Keywords


General, species

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References


Baum, D.A. (2009) Species as Ranked Taxa. Systematic Biology, 58, 74–86.

Beltran, M., Jiggins, C.D., Bull, V., Linares, M., Mallet, J., McMillan, W.O. & Bermingham, E. (2002) Phylogenetic discordance at the species boundary: comparative gene genealogies among rapidly radiating heliconius butterflies. Molecular Biology and Evolution, 19, 2176–2190.

Birky, C. W., Jr., Adams, J., Gemmel, M. & Perry, J. (2010) Using Population Genetic Theory and DNA Sequences for Species Detection and Identification in Asexual Organisms. PLoS ONE, 5, e10609.

Caron, D.A., Countway, P.D. & Brown, M.V. (2004) The growing contributions of molecular biology and immunology to protistan ecology: molecular signatures as ecological tools. The Journal of Eukaryotic Microbiology, 51, 38–48.

Colwell, R.R. (1970) Polyphasic taxonomy of bacteria. Culture collections of microorganisms, 421–436.

de Queiroz, K. (2007) Species Concepts and Species Delimitation. Systematic Biology, 56, 879–886.

DeSalle, R., Egan, M.G. & Siddall, M. (2005) The unholy trinity: taxonomy, species delimitation and DNA barcoding. Philosophical Transactions: Biological Sciences, 360, 1905–1916.

Hanage, W.P., Fraser, C. & Spratt, B.G. (2005) Fuzzy species among recombinogenic bacteria. BMC Biology, 3.

Hey, J. (2001a) Genes, concepts and species: the evolutionary and cognitive causes of the species problem. New York: Oxford University Press.

Hey, J. (2001b) The mind of the species problem. Trends in Ecology & Evolution, 16, 326–329.

John, D.M. & Maggs, C.A. (1997) Species problems in eukaryotic algae: a modern perspective. In: M. F. Claridge, H. A. Dawah & M. R. Wilson (Eds), Species: the units of biodiversity. Chapman and Hall, London, pp. 83–107.

Knowles, L.L. & Carstens, B.C. (2007) Delimiting Species without Monophyletic Gene Trees. Systematic Biology, 56, 887–895.

Mallet, J. (1995) The species definition for the modern synthesis. Trends in Ecology and Evolution, 10, 294–299.

Mayden, R.L. (1997) A hierarchy of species concepts: the denoument in the saga of the species problem. In Species: The units of diversity, edited by M. F. Claridge, H. A. Dawah and M. R. Wilson. London: Chapman and Hall: 381–423.

Mayr, E. (1963) Animal species and evolution. Cambridge MA: The Belknap Press of Harvard University Press.

Pleijel, F. (1999) Phylogenetic taxonomy, a farewell to species, and a revision of Heteropodarke (Hesionidae, Polychaeta, Annelida). Systematic Biology, 48, 755–789.

Purvis, O.W. (1997) The species concept in lichens. In: M. F. Claridge, H. A. Dawah & M. R. Wilson (Eds), Species: the units of biodiversity. Chapman and Hall, London, pp. 109–134.

Raxworthy, C.J., Ingram, C.M., Rabibisoa, N. & Pearson, R.G. (2007) Applications of Ecological Niche Modeling for Species Delimitation: A Review and Empirical Evaluation Using Day Geckos (Phelsuma) from Madagascar. Systematic Biology, 56, 907–923.

Sites, J.W. & Marshall, J.C. (2003) Delimiting species: a Renaissance issue in systematic biology. Trends in Ecology & Evolution, 18, 462–470.

Staley, J.T. (2006) The bacterial species dilemma and the genomic–phylogenetic species concept. Philosophical Transactions of the Royal Society B: Biological Sciences, 361, 1899–1909.

Templeton, A.R. (1989) The meaning of species and speciation: A genetic perspective. In: D. Otte & J. Endler (Eds), Speciation and its consequences. Sinauer, Sunderland, MA, pp. 3–27.

Templeton, A.R., Maskas, S.D. & Cruzan, M.B. (2000) Gene trees: a powerful tool for exploring the evolutionary biology of species and speciation. Plant Species Biology, 15, 211–222.

Tobias, J.A., Seddon, N., Spottiswoode, C.N., Pilgrim, J.D., Fishpool, L.D.C. & Collar, N.J. (2010) Quantitative criteria for species delimitation. Ibis, 152, 724–746.

Vandamme, P., Pot, B., Gillis, M., de Vos, P., Kersters, K. & Swings, J. (1996) Polyphasic taxonomy, a consensus approach to bacterial systematics. Microbiology Reviews, 60, 407–438.

Vrana, P. & Wheeler, W. (1992) Individual organisms as terminal entities: Laying the species problem to rest. Cladistics, 8, 67–72.

Wilkins, J.S. (2003) How to be a chaste species pluralist-realist: The origins of species modes and the Synapomorphic Species Concept. Biology and Philosophy, 18, 621–638.

Wilkins, J.S. (2007) The Concept and Causes of Microbial Species. Studies in History and Philosophy of the Life Sciences, 28, 389–408.

Wilkins, J.S. (2009a) Defining species: a sourcebook from antiquity to today. New York: Peter Lang.

Wilkins, J.S. (2009b) Species: a history of the idea. Berkeley: University of California Press.

Wittgenstein, L. (1968) Philosophical investigations (G. E. M. Anscombe, Trans. Repr. of [3rd ed.] English text, with index. ed.). Oxford: Basil Blackwell.

Wu, C.-I. (2001a) Genes and speciation. Journal of Evolutionary Biology, 14, 889–891.

Wu, C.-I. (2001b) The genic view of the process of speciation. Journal of Evolutionary Biology, 14, 851–865.


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