Bulimnea megasoma and Lymnaea stagnalis, Michigan. Several Bulimnea megasoma (upper left) and several Lymnaea stagnalis (upper right) were maintained for months in the same aquarium. After a while, numerous young appeared which seemed to be intermediate in shell characters between the two species. However, on electrophoretic analysis, the young were found to be all offspring of Bulimnea megasoma. Their change in appearance was due to the changed environment in which the offspring snails were born and matured. Such offspring would be called ecophenotypes.
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
To cite this page: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2015. The Animal Diversity Web (online). Accessed at http://animaldiversity.org.
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.