We thank K. L. Smith for allowing us to participate on
Metabolic potentials of 16 species of chaetognaths were estimated by measuring the activities of citrate synthase (CS) and pyruvate kinase (PK) and correlating these activities with oxygen consumption rates measured on the same individuals. Furthermore, CS activities were generally higher than PK ac...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.570.5643 2023-05-15T13:42:36+02:00 We thank K. L. Smith for allowing us to participate on Erik V. Thuesen James J. Childress The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.5643 http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.5643 http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf three cruises off Point Conception and J. Moeller D. R text ftciteseerx 2016-01-08T12:30:31Z Metabolic potentials of 16 species of chaetognaths were estimated by measuring the activities of citrate synthase (CS) and pyruvate kinase (PK) and correlating these activities with oxygen consumption rates measured on the same individuals. Furthermore, CS activities were generally higher than PK activities, suggesting that chaetognaths are aerobically poised in their metabolism. Metabolic rates and enzyme activities were examined with regard to body size and minimum depths of occurrence. There was an overall decline in both oxygen consumption and enzyme activities with body mass in interspecific com-parisons. The highest CS and PK activities were measured in individuals of the bathypelagic species Caecosagitta macrocephala. The lowest enzyme activities measured in a southern California chaetognath were in the mesopelagic species Pseudosagitta maxima. The lowest overall PK activity was measured in the antarctic species Pseudosagitta gazellae. In contrast to the rapid declines in metabolic potential with depth that have been observed for pelagic fish and crustaceans, no decline in metabolic rate nor in enzyme activities can bc ascribed to depth of occurrence for pelagic chaetognaths. Below depths of several hundred meters, chaetognaths have metabolic rates comparable to those of meso- and bathypelagic fish and crustaceans. Text Antarc* Antarctic Unknown Antarctic The Antarctic |
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ftciteseerx |
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English |
topic |
three cruises off Point Conception and J. Moeller D. R |
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three cruises off Point Conception and J. Moeller D. R Erik V. Thuesen James J. Childress We thank K. L. Smith for allowing us to participate on |
topic_facet |
three cruises off Point Conception and J. Moeller D. R |
description |
Metabolic potentials of 16 species of chaetognaths were estimated by measuring the activities of citrate synthase (CS) and pyruvate kinase (PK) and correlating these activities with oxygen consumption rates measured on the same individuals. Furthermore, CS activities were generally higher than PK activities, suggesting that chaetognaths are aerobically poised in their metabolism. Metabolic rates and enzyme activities were examined with regard to body size and minimum depths of occurrence. There was an overall decline in both oxygen consumption and enzyme activities with body mass in interspecific com-parisons. The highest CS and PK activities were measured in individuals of the bathypelagic species Caecosagitta macrocephala. The lowest enzyme activities measured in a southern California chaetognath were in the mesopelagic species Pseudosagitta maxima. The lowest overall PK activity was measured in the antarctic species Pseudosagitta gazellae. In contrast to the rapid declines in metabolic potential with depth that have been observed for pelagic fish and crustaceans, no decline in metabolic rate nor in enzyme activities can bc ascribed to depth of occurrence for pelagic chaetognaths. Below depths of several hundred meters, chaetognaths have metabolic rates comparable to those of meso- and bathypelagic fish and crustaceans. |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
author |
Erik V. Thuesen James J. Childress |
author_facet |
Erik V. Thuesen James J. Childress |
author_sort |
Erik V. Thuesen |
title |
We thank K. L. Smith for allowing us to participate on |
title_short |
We thank K. L. Smith for allowing us to participate on |
title_full |
We thank K. L. Smith for allowing us to participate on |
title_fullStr |
We thank K. L. Smith for allowing us to participate on |
title_full_unstemmed |
We thank K. L. Smith for allowing us to participate on |
title_sort |
we thank k. l. smith for allowing us to participate on |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.5643 http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf |
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Antarctic The Antarctic |
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Antarctic The Antarctic |
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Antarc* Antarctic |
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Antarc* Antarctic |
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http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.5643 http://www.aslo.org/lo/toc/vol_38/issue_5/0935.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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