Dentex Research Articles

Nutritional quality of different fish species farmed in the Adriatic Sea

The nutritional quality of commercially important farmed fish species, i.e. sea bream (Sparus aurata), sea bass (Dicentrarchus labrax), dentex (Dentex dentex) and turbot (Scophthalmus maximus) was investigated. Dentex was shown to have twice as high omega-3 fatty acid content and two to four times higher eicosapentaenoic (EPA) and docosahexaenoic (DHA) acid content as compared to other fish species. The recommended n-6/n-3 ratio was determined in all fish species, whereas the recommended PUFA/SFA ratio was not seen in turbot. Except of turbot, all other fish species matched the recommended atherogenic index (AI), the thrombogenic index (TI) and the ratio of hypocholesterolemic over hypercholesterolemic fatty acids (HH), while the highest the flesh lipid quality (FLQ) value was determined in dentex.

Ampliación de la distribución de <em>Brycon dentex</em> (Characiformes: Characidae) y <em>Hamuelopsis elongatus</em> (Perciformes: Heamulidae) en Ecuador

Los peces Brycon dentex y Hamuelopsis elongatus fueron colectados por primera vez en la zona ictiohidrográfica de Santiago-Cayapas, en los ríos Mira y Camumbi, cuenca fluvial del río Mira, parroquia Tobar Donoso, provincia del Carchi, Ecuador. Los registros previos de estas especies venían de las zonas ictiohidrográficas Esmeraldas e Intermareal, respectivamente.

Diversity of the edible fishes of the Lagos Lagoon, Nigeria and the public health concerns based on their Lead (Pb) content

In this study, a total of eighteen fish species were recorded in the Lagos Lagoon, Nigeria during a one year survey. Among the animals species recorded, the following, Galeoidesdecadactylus, Dentex gibbosus, Elops lacerta, Scomber japonicus, Ethmalosa fimbriata, Lutjanus agennes, Caranx senegallus, Callinectes amnicola, Paeneus notialis and Mytilus edulis were considered to be abundant in the Lagos lagoon based on the frequency of occurrence in fishermen catches. The analysis of the lead content in muscles of the edible fisheries revealed that the animals accumulated measurable quantity of lead in the edible parts. The level of lead detected in most (12 out of 18 species) of the fisheries species were found to be lower than the daily allowable concentration of 2.0 µg/g standard recommended by the World Health Organisation (WHO). Fishes species with high level of lead in their edible parts include Senegal jack, C. senegallus (2.188 µg/g), Bobo croaker, Pseudotolithus elongatus (2.024 µg/g), Cassava croaker, Pseudotolithus senegalensis (3.157 µg/g), crayfish, Penaeus notialis (25.46µg/g), edible mussel, Mytilus edulis (17.69 µg/g) and crab,Callinectes amnicola (10.19 µg/g). The mean levels of lead in Mytilus edulis, Penaeus notialis, and Callinectes amnicola collected from the Lagos lagoon were about 8 to 24 times higher than the WHO daily allowable standards for lead in sea foods and are therefore unsafe for human consumption. The need for regular monitoring of the levels of metals and other contaminants in edible fisheries resources and collaboration between environmental, health and food agencies to avert human tragedies due to lead accumulation are discussed. Key words: Bioaccumulation, lead, industrial pollution, aquatic ecosystem, biomonitoring.

Comparison of proximate and fatty acid composition of the flesh of wild and cultured fish species

The proximate and fatty acid compositions of the flesh of cultured and wild common dentex (Dentex dentex), brown meagre (Sciaena umbra) and sharp-snout sea bream (Diplodus puntazzo) were evaluated. In all batches, cultured fish had higher values of fat contents. The lipids of cultured sharp-snout sea bream contained significantly (p<0.05) higher proportions of 18:1n-9cis, 20:1 n-9, 22:1 n-9, 18:2n-6cis and 22:2cis than the wild form. In addition, cultured common dentex contained significantly (p<0.05) higher proportions of 14:0, 20:1n-9, 18:2n-6cis, 20:5n-3cis and 22:6n-3. For these two species, the total polyenoic fatty acids content and the n-3/n-6 ratio were higher in the cultured than in the wild forms. Cultured brown meagre contained significantly (p<0.05) higher proportions of 14:0, 20:0, 16:1, 18:1n-9cis, 20:1n-9, 22:1 n-9, 24:1 n-9, 18:2n-6cis, 20:5n-3cis and 22:6n-3 than wild brown meagre. The total monoenoic and polyenoic fatty acid contents were higher in the cultured brown meagre, whereas the corresponding total saturated fatty acid content and the n-3/n-6 ratio were lower.

The Year's Best Crime Writer: Charles Den Tex Discusses Crime Writing in The Netherlands

k A International rime csl Myste ry MADISON DAVIS The Years Best Crime Writer: CHARLES DEN TEX DISCUSSES CRIME WRITING IN THE NETHERLANDS Behind almost all greatworks of literature is a crime. From the adultery of Helen of Troy, to Herod's slaughter of the innocents, to The Kite Runner and The Lovely Bones: it ishard to think of works of literature that don't have some kind of crime as their foundation. Nonethe less, the arbitrariness of the culture hierar chy often designates novels and stories that are based on tra ditional crime writing forms as belonging to low culture. This is less common in the United States where presidents like Franklin Roosevelt and Bill Clinton made no secret of their love for mysteries, but even in continental Europe, crimewriters often find that it is difficult to be taken seriously as writ ers by the literarypress. As thepopularity of mysteries and thrillers has spread, however, promoting crime fiction as a literary genre has become the objective of many writers' groups such as the Genootschap van Nederlandstalige Misdaadauteurs (the association of Dutch language crimewriters) and Das Syndikat (German crimewrit ers). One of the most interesting ways that writing ispromoted in the Netherlands is through a program begun in 1932 by a foundation set up by booksellers and publishers. A dedicated public relations orga nization with a strong budget, the CPNB (Collectieve Propaganda van het Nederlandse Boek) organizes a number of events, such as Book Week inMarch (since 1932, pro moting literature in general), Chil dren's Book Week inOctober (since 1955), and Crime Fiction Month in June (since 1989). As part of both Book Week and Crime Fiction Month, a writer of stature is selected in each category to com pose a novella, which is distributed free to everyone who buys 12.50 worth of books. The novella is printed in astonishing numbers. This year's numbered 865,000, roughly equiv alent to one book for every twenty people in the nation. The CPNB alternates between for eign authors and Dutch language authors, but the author selected is recognized as one of the best in the genre. The author selected forthisyear's Crime Fic tionMonth is Charles den Tex. "For the author," he says, "it is an honor to be asked. And itusually provides a huge boost in visibil ity and sales, because the PR machine of the CPNB is awesome. To have that on your side is a dream come true." Three-time winner of the Gouden Strop (Golden Noose) award forbest Dutch crime novel of the year, Den Tex was born in Aus tralia in 1952 but barely remembers September - October 2010 1 9 Crime & Mystery anything about that land because he moved back to theNetherlands at age five.After secondary school in Leiden and photography and film school in London, he returned to Leiden in 1978 and began work as an advertising copywriter. In that job,he says, he began to respect the craft ofwriting, but itwasn't until 1991,when he was feeling burned out from advertising work, thathe took offsixmonths and began writ ing his firstnovel, Dump. Written in English, it took four years of revisions before itwas finallypub lished in 1995. Including Dump, Den Tex has now published ten nov els, including his latest, Wachtwoord (Password). "I was definitely influenced by Desmond Bagley and Nevil Shute," says Den Tex. "They were the authors I firstread in thegenre. Especially Bagley. I raced through his books?the adventure story with a (sometimes) hot topicorwith some kind of professional at its center: a geologist or a hurricane specialist. "I startedwriting myself when in the course ofmy work I learned more about how we get rid of haz ardous waste (or "special waste," as the British call it?so British). I figured out a plot and a story, and one day when I foundmyself with a lot of time on my hands (about sixmonths), I decided towrite the story. After many rewrites itbecame my firstthriller, Dump." Den Tex's background in busi ness is a bit unusual for writers, but it gives him a specialized knowl edge that informshis literary work. "I was a PR consultant, a man...

Editor's Choice

den Tex. There isa considerable gap between the female authors and their male colleagues. For example, as ofMay 2010, Saskia Noort's first book, Terug naar de kust (Eng. Back tothe Coast, 2009) has been in the top sixty forseven years without interruption. "Popular translated authors include Stieg Larsson, Hen ningMankell, Dan Brown, Nicci French,Karin Slaughter, John Grisham, Lars Kepler, Patricia Cornwell, and a number of oth ers. In thepast, Slaughter, French, Ian Rankin, Mankell, David Baldacci, Minette Walters, Philip Margolin, and many others have been chosen tobe recognized for Crime FictionMonth and have written a novella especially forthisevent. "But, putting popularity aside, is crime fictionconsidered 'important' by critics?That would depend on which criticyou ask. Crime fictioncriticsconsider itvery important. In justover tenyears' time,Dutch crime fictionhas reached maturity, you might say. But ifyou were to ask a literarycritic, the answer would be very different.To literarycritics, crime fiction is of littleimportance. Itplays no role in the literarylandscape. Some simply say it is 'pulp/ "Some of the crime fiction is national in orientation. But most of the books written here have universal qualities. They focus on themes and subjects that are equally important or interesting to readers here or elsewhere." With Wachtwoord just hitting the bookstore shelves, Den Tex is considering his plans for the future."I have just finished a trilogy about Michael Bellicher, a communication and man agement consultant who gets caught in thewheels of Internet crime.De Macht vanMeneer Miller (The power ofMister Miller) unraveled theplot ofbig business using the Internetto manipu late the information we receive. InCel,Michael's identity is sto len andmisused, and he is suspected ofbeing part of a terrorist organization. InWachtwoord, he is confrontedwith thewhite slave trade, traffickinginwomen. The trilogy is a departure from theusual corporate thriller. Michael Bellicher has his own style, his own pace, and the corporate affairs recede into the background. "In the future," says Den Tex, "I may want to explore the psychological thriller. The novella Iwrote forthisyear'sMonth ofCrime Fiction is in that line, and there ismore for me todo there.At the same time, I have a feeling I haven't seen the last ofMichael Bellicher yet." Universityof Oklahoma J.Madison Davis has been writing on international crime and mystery for WLT since 2004. The author of several crime novels and nonfiction books, he serves as president of the International Association of Crime Writers and teaches novel and film-scriptwriting in the Gaylord College of Journalism & Mass Communication at the University of Oklahoma. THEGRAND ARRAY WRITINGS OHNATURE, SCIENCE, AND SPIRIT PATTIANN ROGERS illillli^ Pattianh:Rck(?rs ':^:pfP^;F::: ;- ' '.. ' ^mggff: (Trinity University Press,2010) illllillllli ;;??!!!!?|??|! Pathanri?ojgershave ?j Spiritual Writing,and in:'fi?f*??heaxt Bni?^ selections frornher first mnel>ookswere cfM^^^^^P^r?oe^^^mi intenrtews^fi the Soul's Habitation," aarot^-ivhic^ tions whirl,Rogers ponders thegrid V^^^S^^-v^-'j?i^ oursel^esjllii^: iBcubt?S ::grid^?|||iii .|(|||pj|p descdiji^lpj base our v^khowled^ v????fflfl Out of a universeof ?|^:::^l{M3i6itB' ^th^^|i^?if^;;c^,^auqfe;;!c|f|f; the IL': ;;beingi|;||p||?ii _i one '?fiiiipp IIIIII infuseit withmeaning, as itcontinues t???iM inforap us, body and soul.We embrace strongly a^;^e; |o?e in ten;^ :of r?c?pjK|^ -f^^?^^^-^oWi SherodSantos'sA Poetry tfTi??Min?s, V^?MS?^s God;?p| ?? the Imagination, andGeralc};Stem's V/hat| ?ear Losrngv* .,,WHg,.m?,.i.!?v!^.,?i,^i^iiM?_?^^ : of th?;H?M invojBIK September-October 2010 111 ...

Culture techniques used in larviculture of common dentex (Dentex dentex (L., 1758)).

Culture techniques used in larviculture of common dentex (Dentex dentex (L., 1758)).

Age, Growth and Reproductive Characteristics of the Yellow Sea Bream &lt;i&gt;Dentex tumifrons&lt;/i&gt; in the East China Sea

Age, Growth and Reproductive Characteristics of the Yellow Sea Bream &lt;i&gt;Dentex tumifrons&lt;/i&gt; in the East China Sea

Het Juridische Tijdschrift Gevestigd; Den Tex En Van Hall's 'Bijdragen Tot Regtsgeleerdheid En Wetgeving' (1826-1838)

AbstractAfter some attempts in the eighteenth century and the first decade of the nineteenth, the law review finally established itself in the Netherlands with the Bijdragen tot Regtsgeleerdheid en Wetgeving, which C.A. den Tex and J. van Hall brought out in 1826. Under different names the review existed until 1894. The review naturally reflects current legal issues in its time and offers its readers valuable yearly surveys of new legislation, court decisions and legal literature appearing in France, Germany and England. The codification process is followed critically. There is as yet no trace of legalism. Court decisions get as much attention as legislation, if not more. But that is not the main concern. The advancement of legal scholarship in the great tradition of the famous Dutch school is an important motive of the editors. Roman law and legal history are very prominent. But law-professors are not; they are out-numbered by far by learned advocates. As far as Roman law is concerned the editors hold that since it is no longer in force, it must be studied historically. One is bound no more to the canon of texts in the Corpus Juris or the doctrines well established in legal practice for ages, but historically untenable. New finds like Gaius' Institutes and the Fragmenta vaticana are welcomed and studied assiduously. The influence of Savigny and the Historical School is prominent, but criticism does not fail. The editors publicly reject the formation of schools, because these inevitably create one-sidedness.

The Opecoelidae (Digenea) of sparid fishes of the western Mediterranean. V.Allopodocotyle Pritchard, 1966

Allopodocotyle pedicellata (Stossich, 1887) is redescribed fromSparus aurata from off Corsica and off Provence, France andA. jaffensis (Fischthal, 1980) is redescribed fromSparus pagrus, Dentex dentex andPagellus erythrinus from off Corsica. The status of the genus and these two species is briefly discussed.

Origin of ultramafic rocks, their tectonic setting and history: A contribution to the discussion of the paper “the origin of ultramafic and ultrabasic rocks” by P.J. Wyllie

A subdivision of the orogenic peridotites into ophiolitic (or truly Alpine-type) and “root-zone” peridotites is proposed, and their differences in tectonic setting and metamorphic facies are discussed. Some current hypotheses for the origin and mode of emplacement of the orogenic peridotites are briefly reviewed. It is shown next how various microstructural approaches, such as interpretative petrotectonic studies and the less commonly employed comparative petrofabric analysis of peridotites and their country-rocks, may be used to unravel the igneous, metamorphic and tectonic histories of ultramafic rocks in general. Criteria are established by which igneous flow fabrics, tectonic deformation fabrics and piezocrystalline fabrics of olivine may be distinguished. Special attention is paid to the piezocrystalline shape and lattice fabrics of olivine, deduced by Hartman and Den Tex (1964) through application of W.B. Kamb's theory of thermodynamic equilibrium orientation to the orthorhombic crystal lattice of olivine. The petrofabric habit of olivine and its role in shaping foliations or schistosities in metamorphic peridotites is emphasized. In the second part brief summaries are presented of the fabric and metamorphic data concerning three types of peridotite: (1) a “root-zone” peridotite, (2) an ophiolitic peridotite, and (3) some Iherzolitic nodules from alkali-olivine basalts, while their fabric and metamorphic histories are compared and contrasted. It is shown that they are all more of less complex metamorphic tectonites, having suffered several solid-state deformations and metamorphic events that are largely lacking in their host rocks, thus indicating that they were emplaced in the predominantly solid state. The garnetiferous “root-zone” peridotite of Alpe Arami (Swiss Pennine Alps) has a principal γ-olivine fabric perpendicular to the primary layering and first axial plane schistosity. It developed under eclogite- and granulite facies conditions, and is indicative of piezocrystallization in the absence of a liquid capable of dissolving olivine. After its solid emplacement it has also suffered Alpine tectonization and amphibolite facies rétrogradation. The ophiolitic lherzolite of the French Pyrenees has a principal α-olivine fabric perpendicular to the primary layering and first axial plane schistosity. This is also suggestive of piezocrystallization but in the presence of a liquid capable of dissolving olivine. The Iherzolite was then emplaced, aided by explosive gas release but, except for some fracture cleavages, it was not affected by penetrative Alpine deformation or metamorphism. The Iherzolitic nodules from Dreiser Weiher (F.R.Germany) possess a simple fabric, somewhat similar to that of the Pyrenean Iherzolite, whereas those from the Plateau de Velay in France have a much more complex fabric that may be derived from a “Dreiser Weiher fabric” by solid-state deformation and recrystallization of olivine and orthopyroxene crystals. It is concluded that solid derivation from upper mantle material is the most likely origin for the three types of peridotites, and that their impoverishment in eclogitic or basaltic constituents by partial fusion is improbable on account of their fabric and metamorphic history.

Felix Andries Vening Meinesz, 1887-1966

Felix Andries Vening Meinesz was born at Scheveningen on 30 July 1887. He was one of the four children of Sjoerd Anne Vening Meinesz by his marriage to the Honourable Miss C. A. C. den Tex. His father was mayor of the towns of Rotterdam (1880-1890) and Amsterdam (1891-1901). Vening Meinesz attended primary and secondary schools at Amsterdam and in 1905 enrolled as a student at the Technological University of Delft, where he graduated in civil engineering in 1910. Vening Meinesz was at once offered employment by The Netherlands Geodetic Committee and was requested to take charge of the gravity measurements in the Netherlands. His appointment followed on 1 October 1910. Shortly before his death he recalled the accidental character of this decision which so much influenced his career. The significance of Vening Meinesz’s task with The Netherlands Geodetic Committee will be better understood if one keeps track of the discussions during the meetings of the International Association of Geodesy held between 1885 and 1910. As argued by Helmert, the role of the direction and the intensity of gravity in determining the shape of the earth was being stressed more and more. Helmert himself frequently reported on the pendulum observations contributed by different countries. However, he considered it desirable to determine the earth’s shape not only by means of arc measurements on the continents, but also by means of gravity measurements in the ocean areas. He had already noticed the relation between the intensity of gravity and the local constitution of the earth’s crust; on the other hand he suggested that the geologists should be careful not to draw premature conclusions. Thus according to The Netherlands Geodetic Committee in a report of 1889 concerning an international meeting in Paris: ‘Communications on the investigation of the intensity and the direction of gravity were very important. These could be used as an example of what could be performed in the Netherlands in this respect. For, although because of the minor differences in elevation and the uniformity of the landscape in this country, probably the results to be expected will not be as important as those obtained in more mountainous regions, observations of this kind are desirable in addition to the work accomplished in Germany and France.’