Brain vascular volume, electrolytes and blood-brain interface in the cuttlefish Sepia officinalis (Cephalopoda).
نویسندگان
چکیده
منابع مشابه
Neurogenesis in Cephalopods: “eco-evo-devo” Approach in the Cuttlefish Sepia Officinalis (mollusca-cephalopoda)
Cephalopods are new evolutionary and ecological models. By their phylogenetic position (Lophotrochozoa, Mollusca), they provide a missing master piece in the whole puzzle of neurodevelopment studies. Their derived and specific nervous system but also their convergence with vertebrates offer abundant materials to question the evolution and development of the nervous system of Metazoa (evo-devo s...
متن کاملAccommodation in the cuttlefish (Sepia officinalis).
We have studied natural accommodation in the eye of six specimens of cuttlefish (Sepia officinalis) as they were fed with fish and shrimp. Using infrared photoretinoscopy, we observed (1) that the resting refractive state of the cuttlefish was emmetropic or slightly hyperopic, (2) that accommodation took place only a fraction of a second before a strike and (3) that accommodation focused select...
متن کاملHypoxia 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 کاملThe cuttlefish Sepia officinalis (Sepiidae, Cephalopoda) constructs cuttlebone from a liquid-crystal precursor
Cuttlebone, the sophisticated buoyancy device of cuttlefish, is made of extensive superposed chambers that have a complex internal arrangement of calcified pillars and organic membranes. It has not been clear how this structure is assembled. We find that the membranes result from a myriad of minor membranes initially filling the whole chamber, made of nanofibres evenly oriented within each memb...
متن کاملSymmetrical crypsis and asymmetrical signalling in the cuttlefish Sepia officinalis.
The salience of bilateral symmetry to humans has led to the suggestion that camouflage may be enhanced in asymmetrical patterns. However, the importance of bilateral symmetry in visual signals (and overall morphology) may constrain the evolution of asymmetrical camouflage, resulting in the bilaterally symmetrical cryptic patterns that we see throughout the animal kingdom. This study investigate...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1985
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1985.sp015853