Effects of hypoxia and hypercapnia on blood and tissue physiology of the common cuttlefish Sepia officinalis
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Hypoxia induced changes in the brain of hypoxic tolerant cuttlefish Sepia officinalis
C. Bock, S. Schmidt, F. Melzner, H-O. Poertner Ecopysiology and Ecotoxicology, Alfred-Wegener-Institute, Bremerhaven, Bremen, Germany Introduction Marine invertebrates are frequently used as model organisms in neurological research. Especially experiments on isolated neurons of snails or the giant axon of cuttlefish contributed to a basic and fundamental understanding in neuronal signal transdu...
متن کاملMitochondrial dynamics underlying thermal plasticity of cuttlefish (Sepia officinalis) hearts.
In the eurythermal cuttlefish Sepia officinalis, performance depends on hearts that ensure systemic oxygen supply over a broad range of temperatures. We therefore aimed to identify adjustments in energetic cardiac capacity and underlying mitochondrial function supporting thermal acclimation and adaptation that could be crucial for the cuttlefish's competitive success in variable environments. T...
متن کاملHypoxic Induced Decrease in Oxygen Consumption in Cuttlefish (Sepia officinalis) Is Associated with Minor Increases in Mantle Octopine but No Changes in Markers of Protein Turnover
The common cuttlefish (Sepia officinalis), a dominant species in the north-east Atlantic ocean and Mediterranean Sea, is potentially subject to hypoxic conditions due to eutrophication of coastal waters and intensive aquaculture. Here we initiate studies on the biochemical response to an anticipated level of hypoxia. Cuttlefish challenged for 1 h at an oxygen level of 50% dissolved oxygen satur...
متن کاملInfluence of temperature, hypercapnia, and development on the relative expression of different hemocyanin isoforms in the common cuttlefish Sepia officinalis.
The cuttlefish Sepia officinalis expresses several hemocyanin isoforms with potentially different pH optima, indicating their reliance on efficient pH regulation in the blood. Ongoing ocean warming and acidification could influence the oxygen-binding properties of respiratory pigments in ectothermic marine invertebrates. This study examined whether S. officinalis differentially expresses indivi...
متن کاملInvestigating the essential fatty acids in the common cuttlefish Sepia officinalis (Mollusca, Cephalopoda): Molecular cloning and functional characterisation of fatty acyl desaturase and elongase Authors
Investigating the essential fatty acids in the common cuttlefish Sepia officinalis (Mollusca, Cephalopoda): Molecular cloning and functional characterisation of fatty acyl desaturase and elongase, Aquaculture, 450, pp. 38-47. Title Investigating the essential fatty acids in the common cuttlefish Sepia officinalis (Mollusca, Cephalopoda): Molecular cloning and functional characterisation of fatt...
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