caa a22 4500 477117341 CHVBK 20180405111626.0 cr unu---uuuuu 170330e19961101xx s 000 0 eng 10.1007/BF01875587 doi (NATIONALLICENCE)springer-10.1007/BF01875587 The effect of feeding on the secretion of pepsin, trypsin and chymotrypsin in the Atlantic salmon, Salmo salar L [Elektronische Daten] [Sigfús Einarsson, P. Davies, Clive Talbot] Pepsin stored in the stomach mucosa of the Atlantic salmon (Salmo salar L.) increases within two days of the onset of starvation. Trypsin and chymotrypsin in the pyloric caeca/pancreas behave similarly, indicating that when no food is present in the gut, digestive enzymes accumulate in the secretory tissues. As a corollary, trypsin and chymotrypsin activities in the gut contents fell during starvation, indicating that secretion is greatly reduced when food is not present. At the onset of feeding, pepsin is rapidly synthesised in the mucosal tissues and then secreted. Twenty four hours after feeding, the pepsin levels of the mucosa are still low, suggesting that synthesis may be a rapid response to the presence of food in the stomach. Secretion of trypsin and chymotrypsin appears to take place as soon as digesta enters the intestine, between 4 and 14h after feeding, and resynthesis of enzyme precursors appears to be complete again within a further 11h. It is suggested that both synthesis and release may be under the control of cholecystokinin. Kugler Publication, 1996 pepsin nationallicence trypsin nationallicence chymotrypsin nationallicence feeding nationallicence Atlantic slamon nationallicence secretion nationallicence synthesis nationallicence Einarsson Sigfús Department of Zoophysiology, Zoological Institute, Göteborgs University, S-413 90, Göteborg, Sweden aut Davies P. Division of Environmental and Evolutionary Biology, IBLS, University of Glasgow, G12 8QQ, Glasgow, UK aut Talbot Clive BP Nutrition, Aquaculture Research Centre, N-4001, Stavanger, Norway aut Fish Physiology and Biochemistry Kluwer Academic Publishers 15/5(1996-11-01), 439-446 0920-1742 15:5<439 1996 15 10695 https://doi.org/10.1007/BF01875587 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01875587 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Einarsson Sigfús Department of Zoophysiology, Zoological Institute, Göteborgs University, S-413 90, Göteborg, Sweden aut NATIONALLICENCE 700 1- Davies P. Division of Environmental and Evolutionary Biology, IBLS, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 700 1- Talbot Clive BP Nutrition, Aquaculture Research Centre, N-4001, Stavanger, Norway aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Kluwer Academic Publishers 15/5(1996-11-01), 439-446 0920-1742 15:5<439 1996 15 10695 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer