The authors are indebted to Mr J. Sussman, Professional Officer, School of Chemistry, for help with the C and N determinations.
Gut contents of the ascidian Pyura praeputialis: endogenous and exogenous components
Article first published online: 20 AUG 2009
Journal of Zoology
Volume 196, Issue 4, pages 489–497, April 1982
How to Cite
Goddard, C. K. and Hoggett, A. K. (1982), Gut contents of the ascidian Pyura praeputialis: endogenous and exogenous components. Journal of Zoology, 196: 489–497. doi: 10.1111/j.1469-7998.1982.tb03520.x
- Issue published online: 20 AUG 2009
- Article first published online: 20 AUG 2009
- Accepted 14 October 1980
The gut material of Pyura praeputialis consists of two components: exogenous seston and endogenous mucus in which the seston particles are embedded. It has not heretofore been possible to separate these components; it follows that quantification of each component had not been possible.
A method is described for separating the endogenous and exogenous components. It allows an estimate of how much mucus is produced and what proportion is resorbed. It also allows an estimate of how much seston is ingested and what proportion is digested.