Jump to ContentJump to Main Navigation
Functional Morphology and Diversity$
Users without a subscription are not able to see the full content.

Les Watling and Martin Thiel

Print publication date: 2013

Print ISBN-13: 9780195398038

Published to Oxford Scholarship Online: May 2015

DOI: 10.1093/acprof:osobl/9780195398038.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 29 November 2021

Feeding and Digestive System

Feeding and Digestive System

(p.237) 8 Feeding and Digestive System
Functional Morphology and Diversity

Les Watling

Oxford University Press

This chapter considers the process of digestion. The means by which crustaceans ingest food despite being covered in an exoskeleton are introduced. Then the differing complexities of the guts of malacostracans and non-malacostracans are considered. Non-malacostracans generally have a relatively simple foregut and a large, saclike midgut. On the other hand, most malacostracans are characterized by having a strongly elaborated foregut, which in the simplest forms involves a series of infoldings and ridges but in decapods may be armored with a series of calcareous ossicles. The addition of enzymes along with the maceration action of the armature on the ridges produces a soupy mixture that is pressed against one or more filters in the floor of the foregut. The main chemical digestion and uptake of digested food take place in the midgut. Undigested material, along with some water absorption and binding of material into fecal pellets, occurs in the hindgut.

Keywords:   crustaceans, Crustacea, feeding, digestion, foregut, midgut, hindgut, digestive system

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .