Burch, Jack
Identification
Caption
Physella gyrina. The light band (varix) on the shell shown here was caused by the snail's much slower growth during the winter. While the shell growth was slower at the varix, a thicker shell was produced at this site (which masks the dark mantle [skin covering the viscera] of the snail's body, that elsewhere shows through the translucent shell).
- Subject
- Live Animal
- Type
- Photo
- Life Stages And Gender
- Adult/Sexually Mature
Contributors
John B. Burch (photographer; copyright holder), Mollusk Division, Museum of Zoology, University of Michigan-Ann Arbor
Conditions of Use
This resource may not be downloaded and used without permission of the copyright holder except for educational fair use.
To cite this page: Burch, J.2004. "059.rjb1.jpg" (On-line), Animal Diversity Web. Accessed March 20, 2025 at https://animaldiversity.org/collections/contributors/jack_burch/059.rjb1/
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- Generated: 2025-03-20 21:09
This material is based upon work supported by the National Science Foundation Grants DRL 0089283, DRL 0628151, DUE 0633095, DRL 0918590, and DUE 1122742. Additional support has come from the Marisla Foundation, UM College of Literature, Science, and the Arts, Museum of Zoology, and Information and Technology Services.
The ADW Team gratefully acknowledges their support.