Skip to main content Accessibility help

Population Structure of Live and Dead Gastropods from Bahia la Choya

  • Patricia M. Hartshorne (a1), William B. Gillespie (a1) and Karl W. Flessa (a1)


Size-frequency distributions and size-survivorship curves were constructed for the following seven species of living gastropods from Bahia la Choya: Cerithidea mazatlanica, Cerithidea albonodosa, Cerithium stercusmuscarum, Nassarius iodes, Nassarius brunneostoma, Theodoxus luteofasciatus and Tegula rugosa. Size-frequency distributions and size-survivorship curves of empty shells of Cerithidea mazatlanica and Cerithium stercusmuscarum were constructed to evaluate the effects of taphonomic processes on survivorship curves.

All size-survivorship curves are convex-up in shape: small size classes show low mortality and mortality increases with increasing size. Despite post-mortem processes, survivorship curves for empty shells mimic the shape of curves based on live individuals.



Hide All
Boucot, A.J. 1953. Life and death assemblages among fossils. American Journal of Science, 251: 2540.
Cerrato, R.M. 1980. Demographic analysis of bivalve populations. in Rhoads, D.C. and Lutz, R.A., eds., Skeletal Growth of Aquatic Organisms. Plenum, New York, pp. 417465.
Craig, G.Y. and Hallam, A. 1963. Size-frequency and growth-ring analyses of Mytilus edulis and Cardium edule, and their palaeoecological significance. Palaeontology 6: 731750.
Dodd, J.R. and Stanton, R.J. Jr. 1981. Paleoecology, Concepts and Applications. John Wiley & Sons, New York. 557 p.
Fagerstrom, J.A. 1964. Fossil communities in paleoecology: their recognition and significance. Geological Society of America Bulletin 75: 11971216.
Hallam, A. 1967. The interpretation of size-frequency distributions in molluscan death assemblages. Palaeontology 10: 2542.
Hallam, A. 1972. Models involving population dynamics. in Schopf, T.J.M., ed., Models in Paleobiology. Freeman Cooper, San Francisco, pp. 6280.
Levinton, J.S. and Bambach, R.K. 1970. Some ecological aspects of bivalve mortality patterns. American Journal of Science, 268: 97112.
Meldahl, K.M. 1987. Sedimentologic and taphonomic implications of biogenic stratification. Palaios, in press.
Richards, R.P. and Bambach, R.K. 1975. Population dynamics of some Paleozoic brachiopods and their paleoecological significance. Journal of Paleontology, 49: 775798.

Population Structure of Live and Dead Gastropods from Bahia la Choya

  • Patricia M. Hartshorne (a1), William B. Gillespie (a1) and Karl W. Flessa (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed