scholarly journals Persistent Organic Pollutants (POPs) in Fish Consumed by the Indigenous Peoples from Nenets Autonomous Okrug

Environments ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 3 ◽  
Author(s):  
Dmitry Lakhmanov ◽  
Yulia Varakina ◽  
Andrey Aksenov ◽  
Tatiana Sorokina ◽  
Nikita Sobolev ◽  
...  
Keyword(s):  
Indigenous Peoples ◽  
Lipid Content ◽  
Positive Relationship ◽  
Pink Salmon ◽  
Northern Pike ◽  
Fat Content ◽  
Arctic Char ◽  
Pcb Congeners ◽  
Fish Samples ◽  
Nenets Autonomous

Currently, monitoring of persistent organic pollutant (POP) content in various biological and environmental matrixes in the Arctic is an urgent task. The present study focused on the determination of POPs such as: PCB#28, PCB#52, PCB#101, PCB#105, PCB#118, PCB#123, PCB#153, PCB#128, p,p’-DDE, o,p’-DDE, p,p’-DDD, o,p’-DDD, hexachlorobenzene (HCB), cis-nonachlor, trans-nonachlor, cis-chlordane, trans-chlordane, mirex, 1,2,3,5-tetrachlorobenzene and 1,2,4,5-tetrachlorobenzene in fish consumed by the indigenous people of the Nenets Autonomous Okrug (NAO) of the Russian Arctic. Fish samples were analyzed by gas chromatography triple quadrupole mass spectrometry (GC-MS/MS) using the multiple reaction monitoring (MRM) technique. The obtained results show that the major POPs in fish were dichlorodiphenyltrichloroethane (DDT) breakdown products and polychlorinated biphenyls (PCB) congeners. The ∑PCB8 in pink salmon, Arctic char, navaga, humpback whitefish and northern pike were 1.54, 1.58, 1.24, 0.72 and 0.32 ng/g (ww), respectively. The main PCB congeners maximum average medium concentrations were 0.68 ng/g (ww) and 0.51 ng/g (ww) of PCB#153 in navaga and PCB#128 in pink salmon, respectively. The main DDT breakdown product was p,p’-DDE. In Arctic char, pink salmon, navaga, humpback whitefish and northern pike, the concentration of p,p’-DDE was 0.58, 1.61, 0.49, 0.63 and 0.08 ng/g (ww), respectively. A moderate positive relationship between ∑PCB8 and lipid content and a high positive relationship between ∑DDT and lipid content were observed. In fish samples with fat content <0.5% (northern pike, humpback whitefish), the amount of analyzed POPs was 2 or more times lower than that in fish species with fat content >1% (pink salmon, Arctic char). Despite the large number of fish in the diet of indigenous peoples from NAO, no significant risks were identified. Most legacy POP and organochlorine pesticides (OCPs) tend to decrease, which can be explained by past national and regional bans and restriction on their use and emission.

scholarly journals Polychlorinated Alkanes in Fish from Norwegian Freshwater

2002 ◽  
Vol 2 ◽  
pp. 136-140 ◽  
Author(s):  
Anders R. Borgen ◽  
Martin Schlabach ◽  
Roland Kallenborn ◽  
Eirik Fjeld
Keyword(s):  
High Resolution ◽  
Lipid Content ◽  
Lake Trout ◽  
Industrial Area ◽  
Arctic Char ◽  
Negative Ion ◽  
High Lipid ◽  
Fish Samples ◽  
Polychlorinated Alkanes ◽  
Negative Ion Mode

Short-chain polychlorinated alkanes (sPCAs) have been measured in freshwater fish samples from different lakes all over Norway and from the Norwegian Arctic. The analyses were performed with high-resolution GC coupled to high-resolution MS in electron capture negative ion mode. The species investigated were trout, Arctic char, and burbot (Lota lota). Muscle tissue in the lake trout and Arctic char, and liver in burbot, were selected for analyses because of their high lipid content. ∑sPCA concentration ranged from 108 to 3700 ng/g fat. The highest value was found in the south of Norway near an industrial area.

scholarly journals Effect of Cooking on Quality Commonly Consumed Marine Fish Platycephalidae (Platycephalus indicus) in Iran

2015 ◽  
Vol 3 (11) ◽  
pp. 891
Author(s):  
Ali Aberoumand ◽  
Saeed Ziaei-Nejad
Keyword(s):  
Marine Fish ◽  
Lipid Content ◽  
Protein Concentration ◽  
Proximate Analysis ◽  
Fat Content ◽  
Ash Content ◽  
Processing Method ◽  
Standard Methods ◽  
Fish Samples

Fish Platycephalus indicus usually are consumed by southern people in Iran. The present study assessed the effect of processing on proximate compositions in the fillets of P.indicus. The fish samples were prepared by boiling, baking and frying, while proximate analysis was done by standard methods. Boiling processing method significantly reduced ash content in the fillet whereas fat content was significantly increased in frying. Baking method recorded highest ash content of 10.64%. The highest protein concentration was obtained for boiled fillet (82.73%). Lipid content was recorded highest in fried fillet (17.27%). P. indicus was, rich in fat, protein, and ash, thus its consumption should be encouraged.

scholarly journals Effect of Cooking on Quality Commonly Consumed Marine Fish Platycephalidae (Platycephalus indicus) in Iran

2015 ◽  
Vol 3 (11) ◽  
Author(s):  
Ali Aberoumand ◽  
Saeed Ziaei-Nejad
Keyword(s):  
Marine Fish ◽  
Lipid Content ◽  
Protein Concentration ◽  
Proximate Analysis ◽  
Fat Content ◽  
Ash Content ◽  
Processing Method ◽  
Standard Methods ◽  
Fish Samples

Fish Platycephalus indicus usually are consumed by southern people in Iran. The present study assessed the effect of processing on proximate compositions in the fillets of P.indicus. The fish samples were prepared by boiling, baking and frying, while proximate analysis was done by standard methods. Boiling processing method significantly reduced ash content in the fillet whereas fat content was significantly increased in frying. Baking method recorded highest ash content of 10.64%. The highest protein concentration was obtained for boiled fillet (82.73%). Lipid content was recorded highest in fried fillet (17.27%). P. indicus was, rich in fat, protein, and ash, thus its consumption should be encouraged.

BIOASSAY OF PROLACTIN

1969 ◽  
Vol 60 (1) ◽  
pp. 91-100 ◽  
Author(s):  
Charles S. Nicoll
Keyword(s):  
Epithelial Cells ◽  
Lipid Content ◽  
Dry Weight ◽  
Fat Content ◽  
Assay Sensitivity ◽  
Mucosal Epithelium ◽  
Wet Weight ◽  
Total Dry Weight

ABSTRACT The response of the pigeon crop-sac to systemically acting prolactin (injected subcutaneously) was evaluated by measuring the wet weight of the responsive lateral lobes of the organ and by determining the dry weight of a 4 cm diameter disc of mucosal epithelium taken from one hemicrop. Of several different injection schedules tested, administration of prolactin in four daily injections was found to yield optimal responses. When compared with a graded series of prolactin doses, measurement of the mucosal dry weight proved to be a better method of response quantification than determination of the crop-sac wet weight with respect to both assay sensitivity and precision. The submucosal tissue of the crop-sac was estimated to constitute about 64 % of the total dry weight of the unstimulated organ and it was found to be relatively unresponsive to prolactin stimulation in comparison with the mucosa. The lipid content of the mucosal epithelium was determined using unstimulated crop-sacs or tissues which showed varying degrees of prolactin-induced proliferation. The fat content of the mucosal epithelial cells increased only slightly more rapidly than the dry weight or the defatted dry weight of the mucosa. Suggestions are made for the further improvement of the systemic crop-sac assay for prolactin.

INTERCONNECTION OF SUSTAINABLE DEVELOPMENT COMPONENTS FOR THE INDIGENOUS PEOPLES OF THE NORTH

2020 ◽  
Vol 2 (8) ◽  
pp. 101-110
Author(s):  
N. N. ILYSHEVA ◽  
◽  
E. V. KARANINA ◽  
G. P. LEDKOV ◽  
E. V. BALDESKU ◽  
...  
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Economic Development ◽  
Indigenous Peoples ◽  
Ecological Footprint ◽  
Positive Relationship ◽  
The North ◽  
Strong Positive Relationship ◽  
The Face ◽  
The Relationship

The article deals with the problem of achieving sustainable development. The purpose of this study is to reveal the relationship between the components of sustainable development, taking into account the involvement of indigenous peoples in nature conservation. Climate change makes achieving sustainable development more difficult. Indigenous peoples are the first to feel the effects of climate change and play an important role in the environmental monitoring of their places of residence. The natural environment is the basis of life for indigenous peoples, and biological resources are the main source of food security. In the future, the importance of bioresources will increase, which is why economic development cannot be considered independently. It is assumed that the components of resilience are interrelated and influence each other. To identify this relationship, a model for the correlation of sustainable development components was developed. The model is based on the methods of correlation analysis and allows to determine the tightness of the relationship between economic development and its ecological footprint in the face of climate change. The correlation model was tested on the statistical materials of state reports on the environmental situation in the Khanty-Mansiysk Autonomous Okrug – Yugra. The approbation revealed a strong positive relationship between two components of sustainable development of the region: economy and ecology.

INTEGRATED METHODOLOGY FOR TAKING INTO ACCOUNT THE VIEWS AND OPINONSOF INDIGENOUS PEOPLES IN THEIR INTERACTION WITH PUBLIC AUTHORITIES (ON THE EXAMPLE OF THE YAMAL-NENETS AUTONOMOUS DISTRICT)

2020 ◽  
Vol 6 (2) ◽  
pp. 124-147
Author(s):  
Elena F. GLADUN ◽  
Gennady F. DETTER ◽  
Olga V. ZAKHAROVA ◽  
Sergei M. ZUEV ◽  
Lyubov G. VOZELOVA
Keyword(s):  
Indigenous Peoples ◽  
Citizen Participation ◽  
Indigenous Communities ◽  
The Arctic ◽  
Legal Issue ◽  
Public Authorities ◽  
Autonomous District ◽  
Integrated Methodology ◽  
The World ◽  
Nenets Autonomous

Developing democracy institutions and citizen participation in state affairs, the world community focuses on postcolonial studies, which allow us to identify new perspectives, set new priorities in various areas, in law and public administration among others. In Arctic countries, postcolonial discourse has an impact on the methodology of research related to indigenous issues, and this makes possible to understand specific picture of the world and ideas about what is happening in the world. Moreover, the traditions of Russian state and governance are specific and interaction between indigenous peoples and public authorities should be studied with a special research methodology which would reflect the peculiarities of domestic public law and aimed at solving legal issue and enrich public policy. The objective of the paper is to present a new integrated methodology that includes a system of philosophical, anthropological, socio-psychological methods, as well as methods of comparative analysis and scenario development methods to involve peripheral communities into decision-making process of planning the socio-economic development in one of Russia’s Arctic regions — the Yamal-Nenets Autonomous District and to justify and further legislatively consolidate the optimal forms of interaction between public authorities and indigenous communities of the North. In 2020, the Arctic Research Center conducted a sociological survey in the Shuryshkararea of the Yamal-Nenets Autonomous District, which seems to limit existing approaches to identifying public opinion about prospects for developing villages and organizing life of their residents. Our proposed methodology for taking into account the views of indigenous peoples can help to overcome the identified limitations.

scholarly journals First Record ofAnisakis simplexThird-Stage Larvae (Nematoda, Anisakidae) in European HakeMerluccius merluccius lessepsianusin Egyptian Water

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yasmin Abou-Rahma ◽  
Rewaida Abdel-Gaber ◽  
Amira Kamal Ahmed
Keyword(s):  
Red Sea ◽  
Positive Relationship ◽  
First Record ◽  
Type I ◽  
Merluccius Merluccius ◽  
Molecular Analyses ◽  
Fish Samples ◽  
Third Stage ◽  
European Hake ◽  
Anisakid Larvae

The prevalence of infection and the identification of anisakid larvae in European hakeMerluccius merluccius lessepsianusfrom Hurghada City, Red Sea Governorate, Egypt, were investigated. Fish samples were collected during the period of February and November 2014. Twenty-two (36.66%) out of sixty examined fish specimens were found to be naturally infected withAnisakistype I larvae mostly found as encapsulated larvae in visceral organs. There was a positive relationship between host length/weight and prevalence of infection. Based on morphological, morphometric, and molecular analyses, these nematodes were identified as third-stage larvae ofAnisakis simplex. The present study was considered as the first report of anisakid larvae from European hake in the Egyptian water.

scholarly journals Effects of frozen storage on the proximate composition and formaldehyde content in some selected fish from three different sources of southern Bangladesh

2021 ◽  
Vol 32 (2) ◽  
pp. 303-312
Author(s):  
MD. BOKTHIER RAHMAN ◽  
MD. SAZEDUL HOQUE ◽  
SUPRAKASH CHAKMA ◽  
SHAIDA AKTER ◽  
S.M. OASIQUL AZAD ◽  
...  
Keyword(s):  
Marine Fish ◽  
Lipid Content ◽  
Proximate Composition ◽  
Frozen Storage ◽  
Ash Content ◽  
Health Concern ◽  
Formaldehyde Content ◽  
Fish Samples ◽  
Fresh Frozen ◽  
Different Sources

The study was conducted in aims to investigate the effects of frozen storage and cooking conditionson proximate compositions and formaldehyde content (FA) in some selected fish from three different sourcesin Bangladesh. Proximate composition in fresh and final frozen samples was determined by standard AOACmethod and FA content in fresh, frozen stored, and cooked samples was determined by spectrophotometricmethod. Among the studied fishes, marine fish contained higher protein (except Rita), lipid, and ash followedby estuarine and culture fish samples. Protein, moisture and ash content decreased and lipid content increasedsignificantly (p<0.05) during frozen storage for all samples and sources. The FA was lower in cultured fishsamples compared to that of the river and marine fish samples, both at fresh and end of frozen storage. Atfresh condition, FA content in all samples ranged from 0.41 to 0.71µg/g, 0.51 to 0.89µg/g, and 0.73 to1.69µg/g which increased to 0.95 to 2.11µg/g, 1.74 to 1.95µg/g, and 3.22 to 5.20µg/g at end of the storageperiod, respectively (p<0.05). Further, FA content significantly decreased after cooking in all the fishsamples (p<0.05). However, irrespective of fish species and sources, the FA content was higher than WHOrecommended value (0.2 µg/g). The study findings revealed that longer frozen storage of fish could be apublic health concern to the consumers.

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