On the secretion of digestive enzymes by the marine crab, Thalamita Crenata

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1960 English Publisher:Springer Science and Business Media LLCJournal:Zeitschrift f�r Vergleichende Physiologie, volume 43, pages 567-577 (issn: 0340-7594, eissn: 1432-1351,

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Authors: P. B. Weel;

doi: 10.1007/bf00298104

On the secretion of digestive enzymes by the marine crab, Thalamita Crenata

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Abstract

1. The pH-optima of protease, amylase, saccharase, maltase and lipase of the marine crab, Thalamita crenata, have been determined. Their optima, except for that of lipase, are high when compared with those of Astacus and Maja. 2. After starvation the midgut gland shows a rhythmic activity after feeding commenced, with two maxima of secretion at 1 and 5–8 hours after feeding. The probable mechanism of this type of secretoric activity is discussed.

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