Determination of some functional and technologcal properties of octopus (Octopus vulgaris C.), calamary (Illex coindetti V.), mussel (Mytilus galloprovincialis L.) and cuttlefish (Sepia officinalis L.) meat

2009 ◽  
Author(s):  
Berna Ozalp
Keyword(s):  
Mytilus Galloprovincialis ◽  
Octopus Vulgaris ◽  
Sepia Officinalis

Ultrafiltration in the Branchial Heart Appendage of Dibranchiate Cephalopods: A Comparative Ultrastructural and Physiological Study

1981 ◽  
Vol 92 (1) ◽  
pp. 23-35
Author(s):  
R. SCHIPP ◽  
F. HEVERT
Keyword(s):  
Basal Lamina ◽  
Peripheral Blood ◽  
Sea Water ◽  
Physiological Study ◽  
Coelomic Fluid ◽  
Octopus Vulgaris ◽  
Sepia Officinalis ◽  
Branchial Heart ◽  
Urine Formation

It is shown that ultrafiltration could be the first step in urine formation in Sepia officinalis and Octopus vulgaris. The organization of the podocytes indicates that ultrafiltration can occur through these cells. They have a thick basal lamina in contact with the peripheral blood lacunae, and the cell apices lie in infoldings of the lumen of the appendage. Comparison between the colloid-osmotic and the hydrostatic pressures of the fluids in the branchial heart and the pericardial coelom shows that an ultrafiltration can take place during the branchial heart systole as well as during a long phase of the diastole. Comparison of the osmolalities of blood, coelomic fluid, renal-sac fluid, and sea water shows that these species are hypoosmotic regulators.

Sterols of the Cephalopod Spirula Spirula

1981 ◽  
Vol 61 (4) ◽  
pp. 843-850 ◽  
Author(s):  
James A. Ballantine ◽  
John C. Roberts ◽  
Robert J. Morris
Keyword(s):  
Sterol Composition ◽  
The Other ◽  
Octopus Vulgaris ◽  
Detailed Knowledge ◽  
Sepia Officinalis ◽  
Dietary Components ◽  
Dietary Origin

The sterol biochemistry of the highly advanced molluscan class – the cephalopods – is poorly understood. Few analyses of their component sterols have been published in which GC-MS has been employed (Voogt, 1973; Idler et al. 1978; ApSimon & Burnell, 1980) and these have only involved 5 species.From the available data the cephalopods appear to have a much simpler sterol make-up than the other less-advanced molluscs. Cholesterol appears to be easily the predominant sterol (ca. 90%) with minor amounts of up to 10 other common marine sterols. Of the species analysed, four (Sepia officinalis, Octopus vulgaris, Eledone aldrovandi and Illex illecebrosus) had a very similar major and minor sterol composition. Only the more primitive Nautilus sp. (Idler et al. 1978) had a noticeably different minor sterol composition.Voogt (1973) reported cephalopods to be able to synthesise sterols though molluscs generally appear only to be able to carry out this biosynthesis slowly (Goad, 1978). Cephalopods are extremely active carnivores and thus would be expected to have a diverse diet. If their component sterols are of a dietary origin, a considerable variation in their minor sterol composition might be expected on the basis of the range in sterol composition reported for pelagic organisms (e.g. Morris & Culkin, 1977), many of which may be possible dietary components.Detailed knowledge however of cephalopod diets is limited. Quite apart from the fact that healthy specimens are rarely caught in nets, those that are caught often feed voraciously on the other organisms trapped in the net prior to being brought on board for examination.

Analysis of Ni, Cr, Cu, Pb and Cd in marine bioindicators using mixed-micelles with microwave assisted micellar extraction and GF-AAS

2016 ◽  
Vol 8 (39) ◽  
pp. 7141-7149 ◽  
Author(s):  
A. M. Hernández-Martínez ◽  
C. Padrón-Sanz ◽  
M. E. Torres-Padrón ◽  
Z. Sosa-Ferrera ◽  
J. J. Santana-Rodríguez
Keyword(s):  
Heavy Metals ◽  
Mytilus Galloprovincialis ◽  
Mixed Micelles ◽  
New Method ◽  
Micellar Extraction ◽  
Nereis Diversicolor ◽  
Microwave Assisted ◽  
Gf Aas ◽  
Triton X

A new method has been developed for the extraction and determination of the heavy metals Ni, Cu, Cr, Pb, and Cd in mussels (Mytilus galloprovincialis) and polychaetes (Nereis diversicolor), using biodegradable mixed-micelles (SDS and Triton X-100) as the extractant, and GF-AAS analysis.

Muscle receptors in cephalopods

1965 ◽  
Vol 161 (984) ◽  
pp. 392-402 ◽  
Keyword(s):  
Nerve Cells ◽  
Octopus Vulgaris ◽  
Muscle Fibres ◽  
Sepia Officinalis ◽  
Muscle Receptors ◽  
Intramuscular Nerve ◽  
Nerve Cords

Multipolar nerve cells with the characteristics of muscle receptors have been shown in the arms of Octopus vulgaris . The dendrites of these cells branch out into the muscle fibres and their axons make their way to small, intramuscular ganglion centres (ganglion of the sucker and intramuscular nerve cords), in which they seem to end. Multipolar nerve cells with characteristics similar to those of the cells described in Octopus have also been shown in the lip of Sepia officinalis . Such evidence permits one to think that these structures are more frequent in the cephalopods than has been suspected hitherto and it confirms the presence of a system of proprioceptors.

scholarly journals Trace Elements in Mediterranean Mussels Mytilus galloprovincialis from the South African West Coast

2015 ◽  
Vol 22 (4) ◽  
pp. 489-498 ◽  
Author(s):  
Jacques Bezuidenhout ◽  
Nicole Dames ◽  
Alfred Botha ◽  
Marina V. Frontasyeva ◽  
Zoya I. Goryainova ◽  
...  
Keyword(s):  
Trace Elements ◽  
South African ◽  
Mytilus Galloprovincialis ◽  
Soft Tissues ◽  
Analytical Techniques ◽  
Major And Trace Elements ◽  
Inorganic Contaminants ◽  
Bivalve Molluscs ◽  
Icp Ms

Abstract Invasive bivalve molluscs, Mediterranean mussels (Mytilus galloprovincialis) were used as sentinel biomonitors of pollution by inorganic contaminants in Saldanha Bay and the Langebaan Lagoon area of South Africa. Two complementary analytical techniques, ICP-MS and NAA, allowed for determination of concentrations of 31 major and trace elements including heavy metals and arsenic in the soft tissues of the mussels. Distinct seasonal patterns were found in the dynamics of these concentrations, with the mussels accumulating much more trace elements in winter than in the summer. In general, the mussels that grew naturally also demonstrated higher concentrations of As, Cd, Fe, Hg and Zn than those that were farmed. Fe showed the highest levels with a maximum concentration of 444 mg/kg followed by Zn with a maximum of 228 mg/kg. The concentrations of Mn and Pb were significantly higher in the Port of Saldanha close to the jetty where ores containing these metals are loaded in comparison with the other sampling sites. It was concluded that bivalve molluscs present themselves as effective biomonitors when assessing marine aquatic pollution by inorganic contaminants in the Saldanha Bay region.

scholarly journals Determination of radionuclides in Mytilus galloprovicialis by Alpha And Gamma-Spectroscopy

2004 ◽  
Vol 5 (1) ◽  
pp. 117 ◽  
Author(s):  
H. FLOROU ◽  
K. KEHAGIA ◽  
CH. CHALOULOU ◽  
V. KOUKOULIOU ◽  
CH. LYKOMITROU
Keyword(s):  
Mytilus Galloprovincialis ◽  
Gamma Spectroscopy ◽  
Natural Radionuclides ◽  
Aegean Sea ◽  
Radioactive Pollution ◽  
Activity Concentrations ◽  
North Aegean ◽  
Concentration Factors ◽  
North Aegean Sea

The natural radionuclides 238U ,234Th, 40K and the main man-made 137Cs, have been studied in Mytilus galloprovincialis (Lamarck, 1819) sampled in the Thermaikos gulf – North Aegean Sea, considered as a bioindicator for radiological assessment in the Mediterranean. The ratio 234U/238U has also been determined. In terms of 137Cs, the activity concentrations in seawater from the studied area have been measured as well, and the concentration factors of 137Cs in Mytilus galloprovincialis are given as a parameter of the organism response to radioactive pollution.

scholarly journals Determination of heavy metals in mussels Mytilus galloprovincialis Lamarc using the IСP-AES method

2017 ◽  
Vol 21 (2) ◽  
pp. 116-124 ◽  
Author(s):  
Z. A. Temerdashev ◽  
I. I. Eletskii ◽  
A. A. Kaunova ◽  
I. G. Korpakova
Keyword(s):  
Heavy Metals ◽  
Mytilus Galloprovincialis
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