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Life-history and the evolution of ontogeny in the ostracode genus Cyprideis

  • Peter N. Schweitzer (a1) and G. P. Lohmann (a2)


A large body of paleontological literature concerns the importance of ontogeny as a source of morphological variation for evolution; morphologies that appear during one stage of an organism's development are made available for use in another simply by modifying the developmental program. Paleontologists need to know why this occurs, so they can study the process of evolution in extinct animals and so they can discuss the fossil record in terms that are applicable to modern forms. If most cases of heterochrony can be attributed to life-history evolution then the fossil record provides evidence of the nature of selection (in particular the age-specific mortality) that extinct animals experienced. The hypothesis of interest here is that species in which maturity is accelerated will also show generalized morphology and small size, while those with delayed maturity will have more specialized morphology and large size.

Four species of the ostracode genus Cyprideis were studied to determine whether differences in age at maturity are correlated with heterochrony in the expected manner. For each species the changes in size and shape through geological time were evaluated in the statistical context of modern geographic and seasonal variation. Living populations were sampled regularly to detect differences in seasonality and to estimate the duration of development.

Evolution of ontogeny is apparent at the level of species in this group, but it is not simply related to differences in life-history. In comparisons among species, we find evidence of heterochrony where there is no difference in the age at maturity, and a difference in age at maturity where there is no heterochrony. Similarly, three of the four species show the expected positive correlation between size and age at maturity, yet the fourth species is relatively large and matures rapidly. Cyprideis does not support the generalization that life-history evolution causes heterochrony, and casts doubt on the inference of life-history evolution from heterochrony where the data are drawn exclusively from extinct forms.



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Alberch, P., Gould, S. J., Oster, G. F., and Wake, D. B. 1979. Size and shape in ontogeny and phylogeny. Paleobiology 5:296317.
Blackstone, N. W. 1986. Relative growth and specific growth rates in crustaceans. Growth 50:118127.
Blackstone, N. W. 1987. Allometry and relative growth: pattern and process in evolutionary studies. Systematic Zoology 36:7678.
Bodergat, A. M. 1983. Les ostracodes, témoins de leur environment: approche chimique et écologie en milieu lagunaire et océanique. Documents du Laboratoire Géologique de Lyon 88.
Bold, W. A. van den. 1963. Upper Miocene and Pliocene Ostracoda of Trinidad. Micropaleontology 9:361424.
Bold, W. A. van den. 1976. Distribution of species of the tribe Cyprideidini (Ostracoda, Cytherideidae) in the Neogene of the Caribbean. Micropaleontology 22:143.
Bookstein, F. L. 1978. The Measurement of Biological Shape and Shape Change. Springer-Verlag; Berlin.
Bookstein, F. L., Chernoff, B., Elder, R. L., Humphries, J. M., Smith, G. R., and Strauss, R. E. 1985. Morphometrics in Evolutionary Biology. Academy of Natural Sciences of Philadelphia. Special Publication 15.
Cronin, T. M. 1979. Late Pleistocene marginal marine ostracodes from the southeastern Atlantic coastal plain and their paleoenvironmental implications. Geographie Physique du Quaternaire 33:121173.
Cronin, T. M., Bybell, L. M., Poore, R. Z., Blackwelder, B. W., Liddicoat, J. C., and Hazel, J. E. 1984. Age and correlation of emerged Pliocene and Pleistocene deposits, U.S. Atlantic coastal plain. Palaeogeography, Palaeoclimatology, Palaeoecology 47:2151.
Dodson, S. I. 1974. Adaptive change in plankton morphology in response to size-selective predation: a new hypothesis of cyclomorphism. Limnology and Oceanograpy 19:721729.
Edwards, R. A. 1944. Ostracoda from the Duplin Marl (Upper Miocene) of North Carolina. Journal of Paleontology 18:505528.
Fink, W. L. 1982. The conceptual relationship between ontogeny and phylogeny. Paleobiology 8:254264.
Garbett, E. C., and Maddocks, R. F. 1979. Zoogeography of Holocene Cytheracean ostracodes in the bays of Texas. Journal of Paleontology 53:841919.
Gould, S. J. 1977. Ontogeny and Phylogeny. Belknap Press; Cambridge, MA.
Grossman, S., and Benson, R. H. 1967. Ecology of Rhizopodea and Ostracoda of southern Pamlico Sound region, North Carolina. University of Kansas Paleontological Contribution 44.
Gutentag, E. D., and Benson, R. H. 1962. Neogene (Plio-Pleistocene) freshwater ostracodes from the Central High Plains. Kansas State Geological Survey Bulletin 157.
Heip, C. 1976a. The spatial pattern of Cyprideis torosa (Jones, 1850) (Crustacea, Ostracoda). Journal of the Marine Biological Association of the United Kingdom 56:179189.
Heip, C. 1976b. The life-cycle of Cyprideis torosa (Crustacea, Ostracoda). Oecologia 24:229245.
Herman, P. M. J., and Heip, C. 1982. Growth and respiration of Cyprideis torosa Jones 1850 (Crustacea, Ostracoda). Oecologia 54:300303.
Herman, P. M. J., Heip, C., and Vranken, G. 1983. The production of Cyprideis torosa Jones 1850 (Crustacea, Ostracoda). Oecologia 58:326331.
Horne, D. J. 1980. Life-cycles of podocopid Ostracoda—a review (with particular reference to marine and brackish-water species). Pp. 581590. In Maddocks, R. F. (ed.), Applications of Ostracoda. University of Houston Geosciences; Houston, Texas.
Jones, D. S. 1986. Sclerochronology and the size versus time problem in heterochronic analysis. Geological Society of America Abstracts with Programs 18:649.
Kesling, R. V. 1951. The morphology of ostracod molt stages. Illinois Biological Monographs 21.
King, C. E., and Kornicker, L. S. 1970. Ostracoda in Texas bays and lagoons: an ecologic study. Smithsonian Contributions to Zoology 24.
Kontrovitz, M., and Bitter, R. 1976. Holocene ostracoda from the Shrewsbury River, New Jersey. Micropaleontology 22:7282.
Latifa, G. A. 1987. Effect of temperature on the development of embryonic and postembryonic stages of Heterocypris incongruens (Ramdohr, 1808) (Ostracoda). Crustaceana 52:95100.
Lister, K. H. 1975. Quaternary freshwater ostracoda from the Great Salt Lake basin, Utah. University of Kansas Paleontological Contributions Paper 78.
Lohmann, G. P. 1983. Eigenshape analysis of microfossils: A general morphometric procedure for describing changes in shape. Mathematical Geology 15:659672.
Lohmann, G. P., and Schweitzer, P. N.In press. On eigenshape analysis. Proceedings of the workshop on Morphometrics in Systematic Biology, University of Michigan, Ann Arbor.
McKinney, M. L. 1986. Ecological causation of heterochrony: a test and implications for evolutionary theory. Paleobiology 12:282289.
McNamara, K. J. 1986. A guide to the nomenclature of heterochrony. Journal of Paleontology 60:413.
Martens, K. 1985. Effects of temperature and salinity on postembryonic growth in Mytilocypris henricae (Chapman) (Crustacea, Ostracoda). Journal of Crustacean Biology 5:258272.
Reyment, R. A. 1983. Phenotypic evolution in microfossils. Pp. 209254. In Kecner, M. K., Wallace, B., and Prance, C. T. (eds.), Evolutionary Biology 16. Plenum; New York.
Sandberg, P. A. 1964. The ostracod genus Cyprideis in the Americas. Stockholm Contributions in Geology 12:1176.
Sandberg, P. A. and Plusquellec, P. L. 1974. Notes on the anatomy and passive dispersal of Cyprideis (Cytheracea, Ostracoda). Geoscience and Man 6:126.
Schweitzer, P. N. 1990. Inference of ecology from the ontogeny of microfossils. Ph.D. thesis, MIT/WHOI, WHOI-90-04.
Schweitzer, P. N., Kaesler, R. L., and Lohmann, G. P. 1986. Ontogeny and heterochrony in the ostracode Cavellina Coryell from Lower Permian rocks in Kansas. Paleobiology 12:290301.
Stearns, S. C. 1976. Life-history tactics: a review of the ideas. Quarterly Review of Biology 51:347.
Stearns, S. C. 1977. The evolution of life-history traits: a critique of the theory and a review of the data. Annual Reviews of Ecology and Systematics 8:145171.
Stearns, S. C. 1980. A new view of life-history evolution. Oikos 35:266281.
Stearns, S. C. 1981. The role of development in the evolution of life-histories. Pp. 237258. In Bonner, J. T. (ed.), Evolution and Development. Springer-Verlag; Berlin.
Stearns, S. C. 1983. The impact of size and phylogeny on patterns of covariation in the life-history traits of mammals. Oikos 41:173187.
Stearns, S. C. 1984. The effects of size and phylogeny on patterns of covariation in the life-history traits of lizards and snakes. American Naturalist 123:5672.
Strauss, R. E. 1987. On allometry and relative growth in evolutionary studies. Systematic Zoology 36:7275.
Theisen, B. F. 1966. The life history of seven species of ostracodes from a Danish brackish water locality. Meddelelser fra Danmarks Fiskeriog Havunders⊘gelser 4:215270.
Tressler, W. L., and Smith, E. M. 1948. An ecological study of seasonal distribution of Ostracoda, Solomons Island, Maryland region. Publications, Chesapeake Biological Laboratory 71:161.
Vesper, B. 1972. Zur Morphologie und Okologie von Cyprideis torosa (Jones, 1850) (Crustacea, Ostracoda) unter besonderer Berucksichtigung seiner Biometrie. Mitteilungen Hamburg Zoologische Museum Institut 68:2177.
Wiley, E. O. 1981. Phylogenetics, the Theory and Practice of Phylogenetic Systematics. Wiley-Interscience; New York.
Zahn, C. T., and Roskies, R. Z. 1972. Fourier descriptors for plane closed curves. IEEE Transactions on Computers C-121:269281.

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Life-history and the evolution of ontogeny in the ostracode genus Cyprideis

  • Peter N. Schweitzer (a1) and G. P. Lohmann (a2)


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