Development of digestive secretions in white sturgeon juveniles (Acipenser transmontanus).
Identifieur interne : 000520 ( Ncbi/Checkpoint ); précédent : 000519; suivant : 000521Development of digestive secretions in white sturgeon juveniles (Acipenser transmontanus).
Auteurs : R K Buddington ; S I DoroshovSource :
- Comparative biochemistry and physiology. A, Comparative physiology [ 0300-9629 ] ; 1986.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Amylases, Chymotrypsin, Lipase, Pepsin A, Trypsin.
- enzymology : Digestive System.
- growth & development : Digestive System, Fishes.
- secretion : Digestive System.
- Aging, Animals.
Abstract
Development of the digestive enzyme complement corresponded with this species' carnivorous habits and a natural dietary shift at metamorphosis from larval pelagic zooplanktivory to benthic carnivory. During the first developmental stanza when the digestive tract was differentiating and the larvae were dependent on endogenous nutritional reserves, digestive enzyme concentrations were low. Initiation of gastric secretion (pepsin and acid) was concomitant with onset of exogenous feeding. Highest amylolytic and lipolytic activities were recorded from feeding larvae prior to their metamorphosis to juveniles.
PubMed: 2420521
Affiliations:
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pubmed:2420521Le document en format XML
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<series><title level="j">Comparative biochemistry and physiology. A, Comparative physiology</title>
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<imprint><date when="1986" type="published">1986</date>
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<term>Digestive System (growth & development)</term>
<term>Digestive System (secretion)</term>
<term>Fishes (growth & development)</term>
<term>Lipase (metabolism)</term>
<term>Pepsin A (metabolism)</term>
<term>Trypsin (metabolism)</term>
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<term>Chymotrypsin</term>
<term>Lipase</term>
<term>Pepsin A</term>
<term>Trypsin</term>
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<keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Digestive System</term>
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<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Digestive System</term>
<term>Fishes</term>
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<keywords scheme="MESH" qualifier="secretion" xml:lang="en"><term>Digestive System</term>
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<front><div type="abstract" xml:lang="en">Development of the digestive enzyme complement corresponded with this species' carnivorous habits and a natural dietary shift at metamorphosis from larval pelagic zooplanktivory to benthic carnivory. During the first developmental stanza when the digestive tract was differentiating and the larvae were dependent on endogenous nutritional reserves, digestive enzyme concentrations were low. Initiation of gastric secretion (pepsin and acid) was concomitant with onset of exogenous feeding. Highest amylolytic and lipolytic activities were recorded from feeding larvae prior to their metamorphosis to juveniles.</div>
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