Heavy metals in the gastropod mollusc Haliotis tuberculata (L.)

Author(s):  
G. W. Bryan ◽  
G. W. Potts ◽  
G. R. Forster

Species of Haliotis are of economic importance in several countries around the world and the ormer Haliotis tuberculata (L.) is of importance in the Channel Islands off the north coast of France.

Author(s):  
Jacques Clavier ◽  
Olivier Richard

INTRODUCTIONThe ormer (Haliotis tuberculata L.) occurs in some abundance off the north coast of Brittany and the Channel Islands. On the French coast, exploitation of this species is not legally authorised except in the intertidal zone and the sublittoral stocks have for some years aroused the interest of local fishermen. Studies have therefore been initiated to investigate the exploitation potential of this new resource, and different aspects of the biology and ecology of the ormer have been examined so as to make use of models of population dynamics. Thus, a study of growth merits particular attention.


2020 ◽  
Vol 71 (4) ◽  
pp. 257-272
Author(s):  
Onat Başbay ◽  
Mudar Salimeh ◽  
Eddie John

We review the continuing and extensive spread of Papilio demoleus in south-eastern Turkey and in regions of Turkey and Syria adjacent to the north-eastern Mediterranean. Since the authors documented the arrival of this attractive but potentially destructive papilionid species at coastal areas of Syria in 2019, regular monitoring has confirmed successful overwintering there, as well as in Turkey. As previously indicated, P. demoleus is widely recognized as an invasive pest species in Citrus-growing areas of the world and hence its arrival is of potential economic importance to a region in which citrus is widely grown.


1878 ◽  
Vol 5 (2) ◽  
pp. 79-86 ◽  
Author(s):  
J. A. Birds

In the most extended view, the Channel Islands may be regarded as fragments and relics of the Eastern or European coast of the Atlantic, reckoning from the North Cape to Cape St. Vincent, and including the Western shores of Scotland and Ireland, and the promontories of Pembrokeshire and Cornwall. They are excellent illustrations, says Professor Ansted, “of those spurs and tongues of porphyritic rock, of which almost all the promontories of the Atlantic coast of Europe consist.” Very small and insignificant specks indeed they seem in such a length of coast, stretching from lat. 37° to 72°, or upwards of 2000 miles; but there is a charm in such wide horizons, and it is a very allowable indulgence so to connect the little with the great, and to consider the position of such little specks in relation to the geography of Europe; one might almost as well say, of the world at large.


Author(s):  
Aji Setiawan ST

  أبستراك أڬاما إسلام تيداك ديلاهيركان دي إيندونيسييا, نامون جوسترو نيڬارا إينيلاه ياڠ ميميليكي ڤيندودوك مسليم ديڠان جملاه تيربيسار دي دونييا. باڬايماناكاه چارا أڬاما إيني ماسوك دان بيركيمبانڬ دي أنتارا سوكو دان بودايا ياڠ بيراڬام دي نوسانتارا؟ ڤارا ڤيداڬاڠ عراب ياڠ بيراسال داي سيمينانجوڠ عرابيا كي ڤيسيسير أوتارا سوماتيرا (أچيه) ڤادا أباد كي-٧ ماسيهي إيتو سيلإين بيرداڬاڠ ميريكا جوڬا مينجادي ڤيۑيبار أڬاما إسلام دان ميلاكوكان ڤيركاوينان ديڠان وانيتا سيتيمڤات. سيكاليڤون ڤيندودوك ڤريبومي بيلوم باۑاك ياڠ ميميلوك أڬاما إسلام, تاڤي كومونيتاس مسليم ڤيرتاما تيلاه تيربينتوك ياڠ تيرديري داري أوراڠ-أوراڠ عراب ڤينداتاڠ دان ڤيندودوك لوكال.سيڤيرتي ياڠ ديداڤاتكان ڤارا ڤيڠيلانا چينا دي ڤيسيسير أوتارا سوماتيرا (أچيه) دان كومونيتاس إسلام دي ويلاياه سريويجايا.   Abstrak Agama Islam tidak dilahirkan di Indonesia, namun justru negara inilah yang memiliki penduduk muslim dengan jumlah terbesar di dunia. Bagaimanakah cara agama ini masuk dan berkembang di antara suku dan budaya yang beragam di nusantara? Para pedagang Arab yang berasal dari semenanjung Arabia ke pesisir utara Sumatera (Aceh) pada Abad ke-7 Masehi itu selain berdagang mereka juga menjadi penyebar agama Islam dan melakukan perkawinan dengan wanita setempat. Sekalipun penduduk pribumi belum banyak yang memeluk agama Islam, tapi komunitas Muslim pertama telah terbentuk yang terdiri dari orang-orang Arab pendatang dan penduduk lokal, seperti yang didapatkan para pengelana Cina di pesisir utara Sumatera (Aceh) dan komunitas Islam di wilayah Sriwijaya.  Abstract Islam was not born in Indonesia, but it is this country which has the largest Muslim population in the world. How does this religion enter and develop among the various ethnic groups and cultures in the Nusantara ? Arab traders who came from the Arabian peninsula to the north coast of Sumatra (Aceh) in the 7th century AD, apart from trading, they also spread Islam and married local women. Although not many indigenous people have embraced Islam, the first Muslim community has been formed consisting of Arab immigrants and local residents, as found by Chinese travelers on the north coast of Sumatra (Aceh) and the Islamic community in the Sriwijaya region.


Impact! ◽  
1996 ◽  
Author(s):  
Gerrit L. Verschuur

When the Alvarez team announced to the world that the K/T boundary clay contained a excess of iridium they suggested that it could only be explained if a comet or asteroid had slammed into the earth 65 million years ago. The iridium was deposited when a cloud of debris created by the vaporization of the object upon impact girdled the earth and fell back to form the so-called fireball layer. Most earth scientists were skeptical when they first heard about this. If an object 10 kilometers across had collided with enough force to trigger a global environmental catastrophe that precipitated the extinction of more than half of the species alive at the time, where was the crater? It didn’t take crater experts long to figure that the scar left by such an impact should be huge hole in the ground about 180 kilometers across and a tenth as deep. If it existed, it shouldn’t be hard to find, unless it was under the ocean somewhere, or covered in vast amounts of sediment. It turns out that when the search for the crater began there were several people, perhaps dozens, who already knew where it was. However, they either didn’t know that the search was on, or weren’t allowed to reveal what they knew. The saga of the discovery of the K/T impact crater beneath the north coast of the Yucatan Peninsula of Mexico began many decades before the discovery of iridium in the K/T boundary layer. The saga goes all the way back to 1947 when a gravity survey was started in the Yucatan by the Mexican national oil company, PEMEX. Surface gravity measurements allow geophysicists to detect the structure of rock formations deep beneath the earth’s surface. The study of gravity maps of a region then helps the scientists to figure out where oil might be found; at least that is the goal. The Yucatan survey turned up some intriguing data, including hints of a circular feature some 1,000 meters deep. In the early 1950s test wells were drilled, but no oil was found.


2016 ◽  
Vol 2 (9) ◽  
pp. e1501623 ◽  
Author(s):  
Jeffrey C. Splitstoser ◽  
Tom D. Dillehay ◽  
Jan Wouters ◽  
Ana Claro

Archaeological research has identified the use of cultivated cotton (Gossypium barbadense) in the ancient Andes dating back to at least 7800 years ago. Because of unusual circumstances of preservation, 6000-year-old cotton fabrics from the Preceramic site of Huaca Prieta on the north coast of Peru retained traces of a blue pigment that was analyzed and positively identified as an indigoid dye (indigotin), making it the earliest known use of indigo in the world, derived most likely from Indigofera spp. native to South America. This predates by ~1500 years the earliest reported use of indigo in the Old World, from Fifth Dynasty Egypt [ca. 4400 BP (before present)]. Indigo is one of the most valued and most globally widespread dyes of antiquity and of the present era (it being the blue of blue jeans).


2020 ◽  
Vol 5 (2) ◽  
pp. 135
Author(s):  
Ariani Andayani ◽  
Isti Koesharyani ◽  
Ulfa Fayumi ◽  
Rasidi Rasidi ◽  
Ketut Sugama

<strong>Heavy Metal Accumulation on Green Mussels in the Java Coastal Water.</strong>In many countries, green mussel (<em>Pernaviridis</em>) is harvested as food source. It is also commonly used as indicators for toxic contaminant, i.e. heavy metals, in the coastal waters. In Indonesia, green mussels are mostly cultivated in the north coast of Java where most industrial estates are located. Without further treatment, toxic contaminant of industrial waste may give impact to the surrounding environment, not to mention the adjacent coastal waters. This study was aimed to determine the accumulation of heavy metals, namely Hg, Pb and Cd, in green mussels. Green mussel samples were collected in 2017, taken from four culture sites in the north coast of Java: Panimbang, Jakarta Bay, Brebes and Cirebon. Our results showed that the concentration of Hg, Pb and Cd in green mussel tissues of those locations are: Panimbang = Hg: &lt;0.22 mg/kg, Pb: undetectable, and Cd: 0.068 mg/kg; Teluk Jakarta = Hg: 11.7 mg/kg, Pb: 29.4 mg/kg, and Cd: 0.42 mg/kg; Brebes = Hg: 0.01 mg/kg, Pb: 3.52 mg/kg, and Cd: 0.4 mg/kg; and Cirebon = Hg: 0.01 mg/kg, Pb: 2.66 mg/kg, and Cd: 0.73 mg/kg. These results indicate that only green mussels from Panimbang contain heavy metals below the thresholds allowed to be consumed by humans


1986 ◽  
Vol 37 (2) ◽  
pp. 73-99 ◽  
Author(s):  
Owen Dudley Edwards

Patrick MacGill was born at Glenties, a little village in one of the wildest districts of Donegal on the north coast of Ireland, twenty-one years ago. The eldest of a family of ten, he had to go out into the world at a very early age and begin his fight in the great battle of life. When twelve years old he was engaged as a farm hand in the Irish Midlands, where his day's work began at five o'clock in the morning and went on till eleven at night through summer and winter. It was a man's work with a boy's pay. At fourteen, seeking newer fields, he crossed from 'Derry to Scotland; and there for seven years was either a farm hand, drainer, tramp, hammer-man, navvy, plate-layer or wrestler. During all these years he devoted part of his spare time to reading, and found relief from the drag of the twelve-hour shift in the companionship of books. At nineteen he published 'Gleanings from a Navvy's Scrapbook', and in September, 1911, left the service of the Caledonian Railway Company at Greenock and came to London. In the following year he relinquished his post with the newspaper, and published 'Songs of a Navvy'. This, as well as the former, being now out of print, he has put together some of the pieces out of either, re-written others, and added fresh ones to the same in the present 'Songs of the Dead End'. Windsor, July, 1912. J.N.D.


Author(s):  
Ikuo Hayashi

There are many Haliotis species which are widely distributed along the rocky coasts of temperate and tropical zones, most of them inhabiting the shallow sublittoral areas. Many of them form an important part of the fisheries industry in such countries as Japan, U.S.A., South Africa and Australia. In Guernsey, the Channel Islands, the ormer Haliotis tuberculata L. has been gathered as a local delicacy at low tide of good spring tides - locally known ‘ormering’.Extensive tagging experiments have been undertaken at various places in the world for other species of haliotids, dealing with their growth and movement (Cox, 1962; Newman, 1966; Poore, 1972; Shepherd, 1973). For H. tuberculata, two tagging experiments, in which the growth and movement of sublittoral ormer populations were dealt with in detail, have been reported (Brehaut, 1958; Forster, 1967).The present study has laid emphasis on the structure and growth of a shore population which has been the most important object of ormering to date.


2021 ◽  
Vol 15 ◽  
pp. 100456
Author(s):  
Marzieh Rezaei ◽  
Raheleh Kafaei ◽  
Marzieh Mahmoodi ◽  
Ali Mohammad Sanati ◽  
Dariush Ranjbar Vakilabadi ◽  
...  

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