Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 7 August 1964:
Vol. 145. no. 3632, pp. 602 - 604
DOI: 10.1126/science.145.3632.602
Prev | Table of Contents | Next

Articles

Behavior in Hydra: Inhibition of the Contraction Responses of Hydra pirardi

Norman B. Rushforth 1, Ivan T. Krohn 1, and Loma K. Brown 1

1 Developmental Biology Center, Western Reserve University, Cleveland 6, Ohio

Hydra pirardi contracts spontaneously and in response to external stimuli of light and mechanical agitation. Inhibition of these contractions occurs when the animal feeds on Artemia salina or when reduced glutathione is present in the environment. Such inhibition demonstrates the control of one receptor-effector system by another in hydra.

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)