نتایج جستجو برای: tuna wastes

تعداد نتایج: 16842  

Journal: :International journal of bioinformatics research and applications 2013
Swaraj Priyaranjan Kunal Girish Kumar

Tunas are commercially important fishery worldwide. There are at least 13 species of tuna belonging to three genera, out of which genus Thunnus has maximum eight species. On the basis of their availability, they can be characterised as oceanic such as Thunnus albacares (yellowfin tuna) or coastal such as Thunnus tonggol (longtail tuna). Although these two are different species, morphological di...

Journal: :Public health nutrition 2011
Asim Maqbool Birgitta Strandvik Virginia A Stallings

OBJECTIVE Dietary n-3 (omega-3) and n-6 (omega-6) PUFA have significant implications in health and disease prevention. Marine life is rich in long-chain n-3 PUFA. Children and adults in North America are reluctant fish eaters; canned tuna is a common fish in children's diets. Although a multitude of tuna products are available, their respective PUFA contents have not been well described. The ai...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Boris Worm Derek P Tittensor

Large reductions in the abundance of exploited land predators have led to significant range contractions for those species. This pattern can be formalized as the range-abundance relationship, a general macroecological pattern that has important implications for the conservation of threatened species. Here we ask whether similar responses may have occurred in highly mobile pelagic predators, spe...

Journal: :Ecological applications : a publication of the Ecological Society of America 2011
Thomas R Carruthers Murdoch K McAllister Nathan G Taylor

We formulate and simulation-test a spatial surplus production model that provides a basis with which to undertake multispecies, multi-area, stock assessment. Movement between areas is parameterized using a simple gravity model that includes a "residency" parameter that determines the degree of stock mixing among areas. The model is deliberately simple in order to (1) accommodate nontarget speci...

Journal: :iranian journal of toxicology 0
سید ولی حسینی seyed vali hosseini department of fisheries, college of agriculture & natural resources, university of tehran, karaj, iran. فریدون افلاکی fereidoon aflaki msc in environmental sciences, nuclear science and technology research institute, tehran, iran. سهیل سبحان اردکانی soheil sobhanardakani department of the environment, college of basic sciences, hamedan branch, islamic azad university, hamedan, iran. شقایق بنده خدالنگرودی shaghayegh bandehkhoda langaroudi department of fisheries, lahijan branch, islamic azad university, lahijan, iran.

background: the presence of heavy metals in the environment could constitute a hazard to food security and public health. these can be accumulated in aquatic animals such as fish. canned fish is consumed regularly in many countries. in this study, the levels of heavy metals cu, ni, fe and cr were evaluated in commercial canned fish products that are commonly consumed in iran. the canned fish st...

Journal: :Environmental monitoring and assessment 2006
Waqar Ashraf Zaki Seddigi Abdallah Abulkibash Mazen Khalid

In the present paper, seven heavy metals (Pb, Cd, Ni, Cu, Zn, Cr and Fe) in canned salmon, sardine and tuna fish were determined by using atomic absorption spectroscopy. Cadmium and lead levels were determined by graphite tube AAS whereas Ni, Cu, Cr and Fe were determined by flame AAS. Analytical results were validated by spiking the samples with various concentrations of these metals for recov...

2003
H. A. Shiels J. M. Blank A. P. Farrell

Shiels, H. A., J. M. Blank, A. P. Farrell, and B. A. Block. Electrophysiological properties of the L-type Ca current in cardiomyocytes from bluefin tuna and Pacific mackerel. Am J Physiol Regul Integr Comp Physiol 286: R659–R668, 2004. First published December 4, 2003; 10.1152/ajpregu.00521.2003.—Tunas are capable of exceptionally high maximum metabolic rates; such capability requires rapid del...

2012
F. Forrestal M. Coll D. J. Die V. Christensen

In recent decades the eastern stock of Atlantic bluefin tuna Thunnus thynnus thynnus has declined, driven by excessive catches partially mediated by the growth of the capturebased aquaculture of bluefin in the Mediterranean. This study addresses the potential direct and indirect food-web effects on trophic linkages in the ecosystem through the removal of both small pelagic fish species and wild...

2009
Jordi Viñas Sergi Tudela

BACKGROUND Tuna species of the genus Thunnus, such as the bluefin tunas, are some of the most important and yet most endangered trade fish in the world. Identification of these species in traded forms, however, may be difficult depending on the presentation of the products, which may hamper conservation efforts on trade control. In this paper, we validated a genetic methodology that can fully d...

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