Release of the enzyme chitobiase by the copepod Temora longicornis: characteristics and potential tool for estimating crustacean biomass production in the sea

The chitinolytic enzyme chitobiase (N-acetyl-β-D-glucosaminidase), which is expressed during the pre-moult phase of crustaceans, is released into the ambient water after shedding of the exuvium. We examined the potential use of chitobiase activity in water samples as a measure of secondary productio...

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Bibliographic Details
Published in:Marine ecology. Progress series (Halstenbek) 2000-04, Vol.196, p.195-206
Main Authors: Oosterhuis, Swier S., Baars, Martien A., Klein Breteler, Wim C. M.
Format: Article
Language:English
Subjects:
Bacteria
Biochemistry. Physiology. Immunology
Biological and medical sciences
Biomass
Body weight
Crustacea
Crustaceans
Enzyme activity
Enzymes
Fundamental and applied biological sciences. Psychology
Invertebrates
Marinas
Marine
Physiology. Development
Sea water
Temora longicornis
Water filtration
Water samples
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Summary:The chitinolytic enzyme chitobiase (N-acetyl-β-D-glucosaminidase), which is expressed during the pre-moult phase of crustaceans, is released into the ambient water after shedding of the exuvium. We examined the potential use of chitobiase activity in water samples as a measure of secondary production of crustaceans. Chitobiase activity, expressed on the substrate 4-methylumbelliferyl-N-acetyl-β-D-glucosaminide (MUFNAG), was measured in experiments with the marine copepod Temora longicornis, with focus on the dissolved ('free',
ISSN:0171-8630
1616-1599
DOI:10.3354/meps196195