Cytochemical and physiological studies of the energetic metabolism and osmotrophy in Sagitta friderici (chaetognath)

@article{Duvert2000CytochemicalAP,
  title={Cytochemical and physiological studies of the energetic metabolism and osmotrophy in Sagitta friderici (chaetognath)},
  author={Michel Duvert and L. Gourdoux and Robert Moreau},
  journal={Journal of the Marine Biological Association of the United Kingdom},
  year={2000},
  volume={80},
  pages={885 - 890}
}
Different glucidic labelled compounds were used for carbohydrate metabolism exploration, tissular glycogen storage localization and amino acid uptake response to osmotic variation in the adult of Sagitta friderici. After [1-14C] glucose or [6-14C] glucose (osmotrophic) assimilation, the relative activity of the different metabolic pathways (glycolysis–citric acid cycle and pentose cycle) have been estimated by means of a micro-radiorespirometric method. The kinetics of expired 14CO2 showed that… Expand
Changes in the structure and ultrastructure of the intestine of Spadella cephaloptera (Chaetognatha) during feeding and starvation experiments.
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In starved specimens, major changes in A-cells occur between the sixth and tenth day of starvation and consist in the increase of endosome-like vacuoles, while necrosis features are evident in S-cells and after 30 days of starvation, necrosis Features are observed in the totality of the intestinal epithelium and the specimens die few days later. Expand
Non-carnivorous feeding in Arctic chaetognaths
TLDR
The feeding history of chaetognaths in the Beaufort and Chukchi Seas, and Baffin Bay is analysed, suggesting that E. hamata likely receives a substantial energy input from algae and detritus and is thus not a strict carnivore and Calanus copepods are less important to its diet than other types of zooplankters. Expand
Chaetognaths feed primarily on dissolved and fine particulate organic matter, not on prey: implications for marine food webs
TLDR
The role of chaetognaths should be revisited in the global ocean ecological balance, particularly with respect to vertical carbon flux, and also in predicting fishery resources. Expand

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