Biology and Philosophy

, Volume 19, Issue 2, pp 223–242 | Cite as

Species as individuals

  • Berit Brogaard


There is no question that the constituents of cells and organisms are joined together by the part-whole relation. Genes are part of cells, and cells are part of organisms. Species taxa, however, have traditionally been conceived of, not as wholes with parts, but as classes with members. But why does the relation change abruptly from part-whole to class-membership above the level of organisms? Ghiselin, Hull and others have argued that it doesn't. Cells and organisms are cohesive mereological sums, and since species taxa are like cells and organisms in the relevant respects, they, too, are cohesive mereological sums. I provide further reasons in support of the thesis that species are mereological sums. I argue, moreover, that the advocate of this thesis is committed to a form of pluralism with respect to the species concept.


Species Concept Relevant Respect Species Taxon 
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  1. Anderson L. 1990. ''The Driving Force: Species Concepts and Ecology''. Taxon 39: 375–382.Google Scholar
  2. Cracraft J. 1987. ''Species Concepts and Speciation Analysis''. Current Ornothology 1: 159–187.Google Scholar
  3. De Queiroz K. and Donoghue M.J. 1988. ''Phylogenetic Systematics and The Species Problem''. Cladistics 4: 317–338.Google Scholar
  4. Dupre J. 1981. ''Natural Kinds and Biological Taxa''. The Philosophical Review XC: 66–90.Google Scholar
  5. Ereshefsky M. (ed.) 1992a. The Units of Evolution: Essays on the Nature of Species. MIT Press, Cambridge.Google Scholar
  6. Ereshefsky M. 1992b. ''Eliminative Pluralism''. Philosophy of Science 59: 671–690.Google Scholar
  7. Ghiselin M. 1966. ''On Psychologism in the Logic of Taxonomic Principles''. Systematic Zoology 15: 207–215.Google Scholar
  8. Ghiselin M. 1987. ''Species Concepts, Individuality, and Objectivity''. Biology and Philosophy 2: 127–143.Google Scholar
  9. Ghiselin M. 1989. ''Sex and the Induviduality of Species: A Reply to Mishler and Brandon''. Biology and Philosophy 4: 73–76.Google Scholar
  10. Ghiselin M. 1997. Metaphysics and the origin of species. SUNY Press, Albany.Google Scholar
  11. Goodwin B.C., Kauffman S.A. and Murray J.D. 1993. ''Is Morphogenesis an Intrinsically Robust Process?''. Journal of Theoretical Biology 163: 135–144.Google Scholar
  12. Griffiths P. 1996. ''Darwinism, Process Structuralism, and Natural Kinds''. Philosophy of Science 63: S1–S9.Google Scholar
  13. Heller M. 1990. The Ontology of Physical Objects: Four-Dimensional Hunks of Matter. Cambridge University Press, Cambridge.Google Scholar
  14. Hennig W. 1966. Phylogenetic Systematics. University of Illinois Press, Urbana, IL.Google Scholar
  15. Hull D.L. 1980. ''Individuality and Selection''. Annual Review of Ecology and Systematics 11: 311–332.Google Scholar
  16. Hull D.L. 1984. ''Units of Evolution: A Metaphysical Essay''. In: Brandon R.N. and Burian R.M. (eds), Genes, Organisms, Populations: Controversies over the Units of Selection. The MIT Press, Cambridge, Mass, pp. 142–160.Google Scholar
  17. Hull D.L. 1987. Genealogical Actors in Ecological Roles''. Biology and Philosophy 2: 168–184.Google Scholar
  18. Hull D.L. 1989. The Metaphysics of Evolution. State University of New York Press, Albany.Google Scholar
  19. Hull D.L. 2001. Science and Selection. Cambridge University Press, Cambridge.Google Scholar
  20. Kauffman S.A. 1992. The Origins of Order. Oxford University Press, Oxford.Google Scholar
  21. Kitcher P. 1984a. ''Against the Monism of the Moment''. Philosophy of Science 51: 616–630.Google Scholar
  22. Kitcher P. 1984b. ''Species''. Philosophy of Science 51: 308–333.Google Scholar
  23. Kitcher P. 1989. ''Some Puzzles about Species''. In: Ruse M. (ed.), What the Philosophy of Biology Is. Kluwer Academic Publishers, Dordrecht/Boston/London, pp. 183–208.Google Scholar
  24. Kornet D.J. 1993. ''Permanent Splits as Speciation Events: A Formal Reconstruction of the Internodal Species Concept''. Journal of Theoretical Biology 164: 407–435.Google Scholar
  25. Lewis D. 1991. Parts of Classes. Blackwell, Oxford.Google Scholar
  26. Mahner M. and Bunge M. 1997. The Foundations of Biophilosophy. Springer, Berlin.Google Scholar
  27. Mayr E. 1987. ''The Ontological Status of Species: Scientific Progress and Philosophical Terminology''. Biology and Philosophy 2: 145–166.Google Scholar
  28. Mayr E. 1996. ''What is a species, and what is not''. Philosophy of Science 63: 262–277.Google Scholar
  29. Mishler B.D. and Donoghue M.J. 1982. ''Species Concepts: A Case for Pluralism''. Systematic Zoology 31: 491–503.Google Scholar
  30. Mishler B.D. and Brandon R.N. 1987. ''Individuality, Pluralism, and the Phylogenetic Species Concept''. Biology and Philosophy 2: 397–414.Google Scholar
  31. Nixon K.C. and Wheeler Q.D. 1990. ''An amplification of the phylogenetic species concept''. Cladistics 6: 211–223.Google Scholar
  32. Putnam H. 1975. ''The meaning of 'meaning'''. In: Mind, Language & Reality, Philosophical Papers Vol. 2. Cambridge University Press, Cambridge, pp. 251–271.Google Scholar
  33. Ruse M. 1998. ''All my love is toward individuals''. Evolution 52: 283–288.Google Scholar
  34. Simons P. 1987. Parts-A Study in Ontology. Clarendon Press, Oxford.Google Scholar
  35. Smith B. and Varzi A.C. 1999. ''The Niche''. Nous 33: 214–238.Google Scholar
  36. Sober E. 1984a. ''Sets, Species and Evolution: Comments on Philip Kitcher's ''Species''''. Philosophy of Science 51: 334–341.Google Scholar
  37. Sober E. 1984b. The Nature of Selection. Bradford/MIT Press, Cambridge.Google Scholar
  38. Sterelny K. and Griffith P.E. 1999. Sex and Death. The University of Chicago Press, Chicago.Google Scholar
  39. Templeton A. 1989. ''The meaning of species and speciation: A genetic perspective''. In: Otte D. and Endler J. (eds), Speciation and Its Consequences. Sinauer Associates, Sunderland, MA, pp. 3–27.Google Scholar
  40. Thom R. 1972. Stabilite structurelle et Morphogenese. Benjamin, New York.Google Scholar
  41. Wheeler Q.D. 1996. The Phylogenetic Species. Cornell University Press, Ithaca.Google Scholar
  42. Wilkerson T.E. 1993. ''Species, Essences and Names of Natural Kinds''. Philosophical Quarterly 43: 1–19.Google Scholar
  43. Wilson D.S. 1983. ''The Group Selection Controversy: History and Current Status''. Annual Review of Ecology and Systematics 14: 159–187.Google Scholar
  44. Wilson D.S. (ed.) 1999. Species: New Interdisciplinary Essays. MIT Press, Cambridge.Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Berit Brogaard
    • 1
  1. 1.Philosophy DepartmentSouthern Illinois UniversityEdwardsvilleUSA

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