Chromosomal Evidence for Parallel Evolution of Shell Sculpture Pattern in Goniobasis
- 1 January 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Evolution
- Vol. 36 (1) , 113-120
- https://doi.org/10.2307/2407973
Abstract
Karyotypic variation is described in 2 recognized species of Florida [USA] Goniobasis. G. floridensis has a different karyotype in each of the 3 river basins where it was studied. In 2 adjacent streams, each of which drain a portion of a different river basin, the range of G. floridensis overlaps with that of a smooth-shelled form, G. dickinsoni. The karyotypes of G. dickinsoni within each of these streams is indistinguishable from that of the G. floridensis found there. These 2 stream populations of G. dickinsoni have independently evolved from karyotypically different stocks of Goniobasis and represent parallel evolution of the absence of pronounced shell sculpture.This publication has 1 reference indexed in Scilit:
- Coevolution of Freshwater Gastropods and Their PredatorsThe American Naturalist, 1978