Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels
Trypsin-like enzyme activity of the larvae of two planktonic predatory crustaceans, Homarus gammarus and Nephrops norvegicus (Decapoda: Nephropidae) and the omnivorous larvae of Carcinus maenas (Decapoda: Brachyura) were investigated at each larval stage until metamorphosis. Two copepods, herbivorou...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Cambridge University Press (CUP)
1997
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Online Access: | http://dx.doi.org/10.1017/s0025315400033841 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400033841 |
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crcambridgeupr:10.1017/s0025315400033841 2024-03-03T08:45:11+00:00 Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels Kumlu, M. Jones, D.A. 1997 http://dx.doi.org/10.1017/s0025315400033841 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400033841 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 77, issue 1, page 159-165 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0025315400033841 2024-02-08T08:27:54Z Trypsin-like enzyme activity of the larvae of two planktonic predatory crustaceans, Homarus gammarus and Nephrops norvegicus (Decapoda: Nephropidae) and the omnivorous larvae of Carcinus maenas (Decapoda: Brachyura) were investigated at each larval stage until metamorphosis. Two copepods, herbivorous or omnivorous grazers, Centropages typicus and Temora longicornis (Copepoda: Calanoidae) were also investigated for this enzyme. A comparison of trypsin-like activity in these and other decapod larvae shows a pattern with high levels in herbivores, low levels in carnivores and intermediate levels in omnivores. Herbivorous planktonic crustaceans appear to rely on high digestive enzyme activities to extract nutrients from less digestible algae or particulates, whereas carnivorous larvae have limited enzymatic capacity as they feed at higher trophic levels upon large and easily digestible prey. Omnivorous Carcinus maenas larvae have intermediate levels of digestive enzymes and are able to transfer between herbivorous and omnivorous feeding. Article in Journal/Newspaper Homarus gammarus Copepods Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 77 1 159 165 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Kumlu, M. Jones, D.A. Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
topic_facet |
Aquatic Science |
description |
Trypsin-like enzyme activity of the larvae of two planktonic predatory crustaceans, Homarus gammarus and Nephrops norvegicus (Decapoda: Nephropidae) and the omnivorous larvae of Carcinus maenas (Decapoda: Brachyura) were investigated at each larval stage until metamorphosis. Two copepods, herbivorous or omnivorous grazers, Centropages typicus and Temora longicornis (Copepoda: Calanoidae) were also investigated for this enzyme. A comparison of trypsin-like activity in these and other decapod larvae shows a pattern with high levels in herbivores, low levels in carnivores and intermediate levels in omnivores. Herbivorous planktonic crustaceans appear to rely on high digestive enzyme activities to extract nutrients from less digestible algae or particulates, whereas carnivorous larvae have limited enzymatic capacity as they feed at higher trophic levels upon large and easily digestible prey. Omnivorous Carcinus maenas larvae have intermediate levels of digestive enzymes and are able to transfer between herbivorous and omnivorous feeding. |
format |
Article in Journal/Newspaper |
author |
Kumlu, M. Jones, D.A. |
author_facet |
Kumlu, M. Jones, D.A. |
author_sort |
Kumlu, M. |
title |
Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
title_short |
Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
title_full |
Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
title_fullStr |
Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
title_full_unstemmed |
Digestive Protease Activity in Planktonic Crustaceans Feeding at Different Trophic Levels |
title_sort |
digestive protease activity in planktonic crustaceans feeding at different trophic levels |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0025315400033841 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400033841 |
genre |
Homarus gammarus Copepods |
genre_facet |
Homarus gammarus Copepods |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 77, issue 1, page 159-165 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315400033841 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
77 |
container_issue |
1 |
container_start_page |
159 |
op_container_end_page |
165 |
_version_ |
1792500726366208000 |