Burch, Jack

059.rjb1

Physella gyrina

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).

About this image

Identification
Physella gyrina
Contributors
John B. Burch, University of Michigan-Ann Arbor
photographer copyright holder
Subjects
Subject Live Animal
Type Photo
Life Stages and Gender adult/sexually mature

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 {%B %d, %Y} at https://animaldiversity.org/collections/contributors/jack_burch/059.rjb1/

Last updated: 2004-53-01 / Generated: 2025-09-15 01:58

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