Vague Kinds and Biological Nominalism

Abstract

Among biological kinds, the most important are species. But species, however defined, have vague boundaries, both synchronically owing to hybridization and ongoing speciation, and diachronically owing to genetic drift and genealogical continuity despite speciation. It is argued that the solution to the problems of species and their vague boundaries is to adopt a thoroughgoing nominalism in regard to all biological taxa, from species to domains. The base entities are individual organisms: populations of these compose species and higher taxa. This accommodates all the important biological facts while avoiding the legacy problems of pre-evolutionary typological taxonomy, which saw species and other taxa as prior to their members. Species are however not individuals: they are spatiotemporally bounded collections, which are plural particulars.

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Notes

  1. 1.

    I proposed this in a letter to Ernst Mayr and he did agree that the idea of a highly scattered individual was strained.

  2. 2.

    I have been advocating concrete pluralities since Simons (1980).

  3. 3.

    The type of a genus or higher taxon is a type of one of the species subordinate to it.

  4. 4.

    In unpublished work with Yu Lin, we propose a nominalist account of DNA sequences, using mereology and a nominalistic account of sequences (strings).

  5. 5.

    Ibid.

References

  1. Alström P (2006) Species concepts and their application: insights from the genera Seicercus and Phylloscopus. Acta Zool Sinica 52 (Suppl): 429–434.

    Google Scholar 

  2. Dobzhansky T (1935) A critique of the species concept in biology. Phil Sci 2: 344–355.

    Article  Google Scholar 

  3. Fine K (1975) Vagueness, truth and logic. Synthese 30: 265–300.

    Article  Google Scholar 

  4. Ghiselin M T (1974) A radical solution to the species problem. Syst Zool 26: 536–44.

    Article  Google Scholar 

  5. Hull D I (1976) Are species really individuals? Syst Zool 25: 174–191.

    Article  Google Scholar 

  6. Kitcher P (1984) Species. Phil Sci 51: 308–333.

    Article  Google Scholar 

  7. Liebers D, de Knijff P and Helbig A J (2004) The herring gull complex is not a ring species. Proc Roy Soc Lond B 271: 893–901.

    Article  Google Scholar 

  8. Mayr E (1942) Systematics and the origin of species from the viewpoint of a zoologist. Columbia University Press, New York. Reprinted Harvard University Press, Cambridge, 1999.

  9. Simons P M (1980) Individuals, groups and manifolds. In: Haller R and Grassl W (eds) Logic, language and philosophy. Hölder-Pichler-Tempsky, Vienna.

    Google Scholar 

  10. Simons P M (1999) Does the sun exist? The problem of vague objects. In: Rockmore T (ed), Proceedings of the XX World Congress of Philosophy. Vol. II: Metaphysics. Philosophy Documentation Center, Bowling Green.

    Google Scholar 

  11. Simons P M (2010) Supernumeration: vagueness and numbers. In: Dietz R, and Moruzzi S (eds) Cuts and clouds: vagueness, its nature and its logic. Oxford University Press, Oxford: 482–490.

    Chapter  Google Scholar 

  12. Simpson G G (1961) Principles of animal taxonomy. Columbia University Press, New York.

    Google Scholar 

  13. Vrana P B and Wheeler W C (1992) Individual organisms as terminal entities: laying the species problem to rest. Cladistics 8: 67–72.

    Article  Google Scholar 

  14. Woese R, Kandler O and Wheelis M L (1990) Towards a natural system of organisms: proposal for the domains Archaea, Bacteria, and Eucarya. Proc Nat Acad Sci 87: 4576–4579.

    Article  Google Scholar 

Download references

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Correspondence to Peter Simons.

Glossary

Category

A class the members of which are all the taxa placed at a given level in a hierarchic classification (Simpson 1961: 19)

Liger

Offspring of a male lion and a tigress

Taxon

A group of real organisms recognized as a formal unit at any level in a hierarchic classificationFootnote 5

Tigon

Offpring of a male tiger and a lioness

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Simons, P. Vague Kinds and Biological Nominalism. Int Ontology Metaphysics 14, 275–282 (2013). https://doi.org/10.1007/s12133-013-0127-0

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Keywords

  • Vagueness
  • Nominalism
  • Biological species
  • Taxonomy