Physa marmorata (Pond snail) embryo rotation
Embryo of P. marmorata (Pond snail) inside the egg three days after laying. The embryo of pulmonata gastropods shows a characteristic rotational behaviour, explained as the necessity to stir the gas/fluid microenvironment inside the egg capsule. The rotation is propelled by ciliar activity and is boosted by low levels of oxygen. (100X magnification).
Channels: Developmental Biology
Tags: Snails Embryo Gastropoda Pulmonata
Uploaded by: DrConcas ( Send Message ) on 16-08-2011.
Duration: 0m 31s
