| [method of determining visual pigments in situ and their study in some vertebrates]. | a simple electrophysiological method for determining of visual pigments in isolated retina is described. the method is based on registration of the early receptor potential amplitude which is proportional to the visual pigment content and on measurement of the rate of the decrease of this amplitude under the action of the bleaching light of a known wavelength and intensity. the results of the determining of rod and cone visual pigments in the lamprey lampetra fluviatilis, teleosts diplodus annul ... | 1975 | 814749 |
| [heavy metal concentrations in various species fished from the gulf of catania]. | the aa report the concentrations of cu, zn, cd, pb and hg found in fish, crustaceans and mollusca fished in a zone of the coast to the south of the city of catania. the results obtained show that among the fish the species with the highest concentrations of all the metals investigated, but excluding mercury, is boops boops (bogue) followed by trachurus mediterraneus (horse mackerel), whereas the species showing least concentrations is pagellus erythrinus (pandora). in many cases the concentratio ... | 1981 | 7272031 |
| influence of exercise on the activity and the distribution between free and bound forms of glycolytic and associated enzymes in tissues of horse mackerel. | the effects of short-term burst (5 min at 1.8 m/s) swimming and long-term cruiser (60 min at 1.2 m/s) swimming on maximal enzyme activities and enzyme distribution between free and bound states were assessed for nine glycolytic and associated enzymes in tissues of horse mackerel, trachurus mediterraneus ponticus. the effects of exercise were greatest in white muscle. the activities of phosphofructokinase (pfk), pyruvate kinase (pk), fructose-1,6-bisphosphatase (fbpase), and phosphoglucomutase (p ... | 2001 | 11471046 |
| [activity and properties of phosphofructokinase from while muscle of the horse mackerel trachurus mediterraneus during simulation due to swimming]. | the activity and properties of phosphofructokinase (pfk) in tissues of horse mackerel which was swimming at burst regimen for 5 min and at cruiser one for 60 min have been investigated. in white muscle the pfk activity increased 1.6-fold after burst swimming and hill's coefficient rose as well and decreased 3-fold after cruiser one. swimming did not change the half-maximal saturation constant for both substrates and inhibition constants for atp and citrate. in the preparations from white muscle ... | 2002 | 12199103 |
| levels of heavy metals (fe, cu, ni, cr, pb, and zn) in tissue of mugil cephalus and trachurus mediterraneus from iskenderun bay, turkey. | concentrations of iron, copper, nickel, chromium, lead, and zinc were determined in the muscle, skin and gonads of mugil cephalus and trachurus mediterraneus caught at three stations in iskenderun bay, turkey. heavy metal concentrations in the tissues tended to vary significantly among stations, and two stations thought to be contaminated by untreated domestic wastes and surrounding industrial environment showed particularly high metal concentrations. generally, skin and gonads showed higher met ... | 2003 | 12804525 |
| in vitro percutaneous absorption studies and in vivo evaluation of anti-inflammatory activity of essential fatty acids (efa) from fish oil extracts. | the aim of the present study was to evaluate the in vitro percutaneous absorption and the in vivo anti-inflammatory activity of epa and dha fatty acids from three oily extracts, obtained by acetonic extractions from the entrails of different varieties of mediterranean fishes such as mackerel (scomber scombrus), sardine (sardina pilchardus) and horse mackerel (trachurus mediterraneus). in the first part of our research, we focused our attention on the characterization of the oily extracts to dete ... | 2005 | 15979259 |
| relationship between total mercury concentration and fish size in two pelagic fish species: implications for consumer health. | total mercury concentrations were determined in different size classes of two pelagic fish species of great commercial importance, horse mackerel (trachurus trachurus) and mediterranean horse mackerel (trachurus mediterraneus), to evaluate the relationship between total mercury concentration and fish size and to determine whether any differences might affect the quantitative assessment of mercury exposure for consumers. mercury concentrations in horse mackerel and in mediterranean horse mackerel ... | 2006 | 16786863 |
| protective effect of mediterranean fish oil extracts on heat-induced denaturation of albumin. | three oily extracts, obtained by acetone extraction from the entrails of different varieties of mediterranean fishes, such as mackerel (scomber scombrus), sardine (sardina pilchardus) and horse mackerel (trachurus mediterraneus), were characterized to determine their unsaturated fatty acid content. in an in-vitro model, their inhibitory effect was then evaluated against protein aggregation and their protective efficacy against heat-induced albumin denaturation assessed. the fish oil extracts tes ... | 2006 | 17034666 |
| changes in body condition and fatty acid composition of wild mediterranean horse mackerel (trachurus mediterraneus, steindachner, 1868) associated to sea cage fish farms. | net-cage fish farms attract a great number of wild fishes, altering their behaviour and possibly their physiology. wild mediterranean horse mackerel (trachurus mediterraneus), sampled from populations aggregated around two mediterranean fish farms and from two natural control populations, were analyzed for differences in body condition, stomach content and fatty acid composition. pellets used to feed caged fish in both farms were also analyzed to identify their relationship with the fatty acid c ... | 2007 | 17095083 |
| [use of properties and regulation peculiarities of enzymes of glycogenolysis in fish skeletal muscle depending on peculiarities of motor activity of species]. | levels of activity, properties, and peculiarities of activation of glycogen phosphorylase (gp; ec 2.4.1.1) and glycogen phosphorylase kinase (gpk; ec 2.7.1.38) were studied in the white skeletal muscle of fish differing in motor behavior. no differences in the gp and gpk activity levels were revealed in laskir diplodus annularis (l.), horse mackerel trachurus mediterraneus ponticus, salmon salmo trutta morphario, scorpena scorpaena porcus, scophtalnus maeoticus, and carp cyprinus carpio; however ... | 2008 | 18411509 |
| molecular characterization of anisakis larvae from fish caught off sardinia. | abstract anisakis spp. larvae are parasitic, and potentially zoonotic, nematodes transmitted by marine fish and cephalopods, which are the main intermediate hosts of the third larval stage. the accidental consumption of infected raw or poorly cooked fish may cause gastroenteric diseases and allergies in humans. the aim of the present study was to use pcr-rflp to define the occurrence, species variability, and host preferences of anisakis spp. larvae in fish caught off the coast of sardinia. necr ... | 2011 | 21501045 |
| molecular characterization of hysterothylacium aduncum (nematoda: raphidascaridae) from different fish caught off the tunisian coast based on nuclear ribosomal dna sequences. | larval forms of the genus hysterothylacium have been previously reported in teleost fish from the north african coasts of central mediterranean sea by morphological analysis. in the present study, samples identified morphologically as hysterothylacium aduncum (n = 62), from merluccius merluccius, trachurus mediterraneus and pagellus erythrinus from different geographical locations of the tunisian coasts, were genetically characterised by sequences of the first (its-1), the 5.8s and second (its-2 ... | 2011 | 21519865 |
| [effect of muscle load and fatigue on the adenosine triphosphate and creatine phosphate level in the skeletal muscles of the mackerel trachurus mediterraneus]. | | 2015 | 4664345 |
| occurrence of nematodes of the genus anisakis in mediterranean and atlantic fish marketed in sardinia. | anisakiasis is a gastrointestinal fish-borne zoonosis caused by the ingestion of third stage larvae of the genus anisakis. between january and december 2013, 1112 specimens of four commercial fish species (engraulis encrasicolus, merluccius merluccius, scomber colias and trachurus mediterraneus) marketed in sardinia (italy) were examined for anisakis sp. the overall prevalence of anisakis spp larvae was 39.9%, all morphologically identified as type i. scomber colias showed the highest prevalence ... | 2017 | 28299289 |
| molecular and epidemiological data on anisakis spp. (nematoda: anisakidae) in commercial fish caught off northern sardinia (western mediterranean sea). | anisakiasis is a fish-borne zoonosis caused by third stage larvae of the nematode anisakis sp. present in fish or cephalopods. this is the first contribution to the molecular identification and epidemiology of anisakis spp. in commercial fish from the gulf of asinara (sardinia, western mediterranean sea). between april 2006 to november 2011, 777 specimens of 10 fish species (engraulis encrasicolus, merluccius merluccius, micromesistius poutassou, phycis blennoides, sardina pilchardus, sardinella ... | 2014 | 24630706 |
| prevalence of anisakid nematode larvae infecting some marine fishes from the libyan coast. | this study examined eight hundred ninety six marine fishes belonging to nine different fish species; synodus saurus; merluccius merluccius; trachurus mediterraneus; serranus cabrilla; mullus surmuletus; diplodus annularis; spicara maena; siganus rirulatus and liza ramada. the fishes were bought from fish markets at five different sites on libyan coast, from january to december 2013, for study the anisakids larvae among them. the results showed that 344/896 fishes (38.4%) were infected with anisa ... | 2015 | 26939239 |
| survey of viral haemorrhagic septicaemia virus in wild fishes in the southeastern black sea. | species diversity in the black sea ecosystem has been declining rapidly over the last 2 decades. to assess the occurrence and distribution of viral haemorrhagic septicaemia virus (vhsv) in various wild fish species, a wild marine fish survey was carried out in 2009, 2010, and 2011. the pooled or individual samples of kidney, liver, and spleen of 5025 specimens, belonging to 17 fish species, were examined virologically using cell culture. the cells showing cytopathic effects (cpe) were subjected ... | 2014 | 24991737 |
| toxic metals in tissues of fishes from the black sea and associated human health risk exposure. | the anthropogenic activities in the black sea area are responsible for toxic metal contamination of sea food products. in this study, several toxic metals: cadmium, lead, nickel, chromium, and copper were quantified in different tissues (digestive tract, muscle, skeleton, skin) of nine fish species (neogobius melanostomus, belone belone, solea solea, trachurus mediterraneus ponticus, sardina pilchardus, engraulis encrasicolus, pomatomus saltatrix, sprattus sprattus, scorpaena porcus) by using at ... | 2017 | 28127691 |
| rapid extraction and reverse phase-liquid chromatographic separation of mercury(ii) and methylmercury in fish samples with inductively coupled plasma mass spectrometric detection applying oxygen addition into plasma. | a simple and sensitive procedure was developed for extraction and speciation of mercury in fish. species separation was accomplished with reverse phase-high performance liquid chromatography (hplc) hyphenated to inductively coupled plasma mass spectrometry (icp-ms). oxygen addition into plasma allowed use of organic-rich mobile phase, achieving species separation in 4 min. mercury species extraction was achieved by microwave exposure for 2 min at mild conditions (60°c, ph 2.0), avoiding necessit ... | 2015 | 25872437 |
| [the rodlet cells of some species of freshwater and marine bony fishes of orders cypriniformes and perciformes]. | the fine structure of rodlet cells from pronephros of cobitis taenia (l.), mesonephros of tinca tinca (l.), rutilus rutilus (l.), stizostedion volgense (gmelin), stizostedion lucioperca (l.), perca fluviatilis (l.), trachurus mediterraneus (staindachner) and diplodus annularis (l.) was studied. in the organs examined, cells at developmental stages iii, iv and v were detected. it is shown, that the rodlet cells have the structural organization similar to that described in different organs of fish ... | 2011 | 21539089 |
| assessment of metal concentrations in commercially important fish species in black sea. | in the present study, concentrations of arsenic (as), cadmium (cd), cobalt (co), chromium (cr), copper (cu), manganese (mn), nickel (ni), lead (pb), and zinc (zn) were measured in the muscle, gill, and gonads of the pelagic fish species trachurus mediterraneus, engraulis encrasicolus ponticus, and sprattus sprattus that are important both commercially and for the ecosystems in the black sea. the samples were collected during 2011. the metals were determined using inductively coupled plasma mass ... | 2016 | 24193046 |