scholarly journals Effect of Vegetable Growth on Content and Composition of Antibiotics in Litopenaeus vannamei Pond Sediments in Crop/Aquacultural Rotation Process

2021 ◽  
Vol 13 (15) ◽  
pp. 8400
Author(s):  
Bihan Gu ◽  
Feipeng Li ◽  
Yanru Liu ◽  
Lingchen Mao ◽  
Hong Tao
Keyword(s):  
Crop Rotation ◽  
Sediment Quality ◽  
Community Characteristics ◽  
Major Pathway ◽  
Idle Period ◽  
Shrimp Ponds ◽  
Bottom Substrate ◽  
Vegetable Growth ◽  
Pond Ecosystem ◽  
Rate Of Decline

Photodegradation remains the major pathway of antibiotic removal in natural ponds. This study introduced a new method of growing vegetables on the bottom substrate of shrimp ponds to improve sediment quality. The aim of the study was to investigate the effect of vegetable planting on the photodegradation of antibiotics. This study characterized antibiotic levels in the pond sediment during this phytoremediation process and investigated the antibiotic content and composition of the sediment with and without crop rotation (traditional control), as well as the shrimp yields. The results showed that total antibiotics (e.g., trimethoprim, oxytetracycline, and norfloxacin) in the sediment of all aquaculture ponds continuously decreased from 44.78 ± 4.07 μg/kg to 18.80 ± 2.26 μg/kg in the crop rotation pond. The total amount of antibiotics consistently decreased in all ponds, and the rate of decline did not greatly differ. However, oxytetracycline in the crop rotation pond decreased faster than in the control pond, presumably because the growing vegetables altered the sediment and microbial-community characteristics that promoted oxytetracycline degradation. In the following year, there was little difference in the levels of norfloxacin or oxytetracycline between the two ponds. An increase in trimethoprim in the control pond was much higher than in the crop-growing sediment. It was indicated that the system remediated the shrimp pond ecosystem as well as providing the possibility of increasing profits by planting vegetables in the winter idle period of shrimp ponds.

scholarly journals Effect of Sanitizer Treatment on Bacteriology of Microcosm Simulating Shrimp Pond Ecosystem

2005 ◽  
Vol 18 (2) ◽  
Author(s):  
B.M. NAIK ◽  
M.N. VENUGOPAL ◽  
I. KARUNASAGAR ◽  
I. KARUNASAGAR
Keyword(s):  
Sodium Hypochlorite ◽  
Deleterious Effect ◽  
Heterotrophic Bacteria ◽  
Bacterial Count ◽  
Ammonia Oxidizers ◽  
Shrimp Ponds ◽  
Shrimp Pond ◽  
Log Reduction ◽  
Initial Reduction ◽  
Pond Ecosystem

The effect of three commonly used water sanitizers, viz benzalkonium chloride (BKC), sodium hypochlorite and iodophor on shrimp pond associated microbiota was studied in laboratory microcosms. Treatment of microcosm with 0.1 ppm BKC did not lower the total heterotrophic bacterial count. With 3.0 ppm, there was an initial reduction of one log unit at 8h followed by an increase in bacterial counts at 18h. Ammonia oxidizers on the other hand were affected even with 0.1 ppm. Sodium hypochlorite at 10 ppm brought about one log reduction in heterotrophic bacterial count and the level of ammonia oxidizers was also reduced. Treatment with 10 ppm iodophor did not affect both autotrophic and heterotrophic bacteria. The results suggest that sanitizers should be used with caution in shrimp ponds due to their deleterious effect on useful microorganisms involved in mineralization.

scholarly journals Short Communication: The diversity of epipelic diatoms as an indicator of shrimp pond environmental quality in Lampung Province, Indonesia

2018 ◽  
Vol 19 (4) ◽  
pp. 1220-1226
Author(s):  
SUPONO SUPONO ◽  
SITI HUDAIDAH
Keyword(s):  
Organic Matter ◽  
Short Communication ◽  
Sediment Quality ◽  
Organic Matter Content ◽  
Matter Content ◽  
Total Alkalinity ◽  
Exploratory Research ◽  
Shrimp Ponds ◽  
Water And Sediment ◽  
Epipelic Diatoms

Supono, Hudaidah S. 2018. Short Communication: The diversity of epipelic diatoms as an indicator of shrimp pondenvironmental quality in Lampung Province, Indonesia. Biodiversitas 19: 1220-1226. Epipelic diatoms live by attaching to sediment.Their existence is strongly affected by water and sediment quality. The purpose of this research was to analyze the structure ofepipelic diatom populations on the bottom of shrimp ponds and to determine the correlation between epipelic diatom diversityand the quality of water and of pond bottom sediment. This exploratory research was conducted on twelve shrimp ponds during thewater preparation period (pre-stocking). Data were collected to analyze the correlation between water and sediment qualities. The resultsshowed that Nitzschia and Pleurosigma were the dominant epipelic diatoms in the shrimp ponds. Epipelic diatom diversity in shrimpponds was affected by water quality parameters (namely total alkalinity, organic matter and nitrate) as well as sediment qualityparameters (namely cation exchange capacity, clay content and organic matter content).

A Preliminary Study of Ecopath with Ecosim to the Shrimp Pond Ecosystem

2011 ◽  
Vol 88-89 ◽  
pp. 423-426
Author(s):  
Tian Wen Zhang ◽  
Yue Peng Su ◽  
Shen Ma
Keyword(s):  
Mass Balance ◽  
Ecosystem Approach ◽  
Balance Model ◽  
Ecopath With Ecosim ◽  
Shrimp Culture ◽  
Shrimp Ponds ◽  
Marine Aquaculture ◽  
Mass Balance Models ◽  
Pond Ecosystem ◽  
Preliminary Study

Marine aquaculture is an important growing worldwide industry. An ecosystem approach to study the effects of aquaculture on shrimp ponds was implemented by using a trophic mass-balance model in order to estimate the potential effects of aquaculture and, therefore, to identify the species playing a key-role in ecosystem. Furthermore, the use of mass-balance models can provide important information to improve shrimp culture.

scholarly journals SEDIMENDT CHARACTERISTICS OF COASTAL WATERS AROUND INTENSIVE SHRIMP PONDS DURING WET SEASON IN PUNDUH BAY, PESAWARAN DISTRICT OF LAMPUNG PROVINCE

2017 ◽  
Vol 9 (1) ◽  
pp. 221-234
Author(s):  
Mudian Paena ◽  
Rezki Antoni Suhaimi ◽  
Muhammad Chaidir Undu
Keyword(s):  
Redox Potential ◽  
Coastal Waters ◽  
Sediment Quality ◽  
Survey Method ◽  
Sediment Characteristics ◽  
Wet Season ◽  
Shrimp Ponds ◽  
Plastic Bags ◽  
Potential Carbon

The study was conducted using survey method. The sampling points were based on the distances from pond outlet toward offshore which were 25, 100, 200, 400, 800, 1600 and 3200 m. Sample of sediments were collected using sediment grab then about 1-1.5 kg of samples were stored in plastic bags for analysis of pH, redox potential, carbon organic. The in-situ measurements were conducted for pH and redox potential using a pH mV and pH meter, probe HANNA instruments HI 8424, whereas other sediment quality variables were analysed under laboratory. The results of this study showed that the pH sediments were ranged between 6.38 – 7.80 with average of 7.36. Redox potential of sediments ranged between -186 to 72 mV, average - 88.39 mV. Carbon organic ranged between 0.30 – 9.85%, average 3.09%. Organic matter ranged between 0.30 – 9.85%, average 3.16%. Total nitrogen were ranged between 0.05 – 0.25% with average of 0.17%, phosphate were 8.62 – 187.71 mg/L with average of 88.43 mg/L. Based on the sediment characteristics, the sediments of Punduh Bay had been polluted by organic matters. Keywords: sediment characteristics, shrimp ponds, Punduh bay,                             Pesawaran district, Lampung province

scholarly journals SEDIMENDT CHARACTERISTICS OF COASTAL WATERS AROUND INTENSIVE SHRIMP PONDS DURING WET SEASON IN PUNDUH BAY, PESAWARAN DISTRICT OF LAMPUNG PROVINCE

2017 ◽  
Vol 9 (1) ◽  
pp. 221
Author(s):  
Mudian Paena ◽  
Rezki Antoni Suhaimi ◽  
Muhammad Chaidir Undu
Keyword(s):  
Redox Potential ◽  
Coastal Waters ◽  
Sediment Quality ◽  
Survey Method ◽  
Sediment Characteristics ◽  
Wet Season ◽  
Shrimp Ponds ◽  
Plastic Bags ◽  
Potential Carbon

<p><em>The study was conducted using survey method. The sampling points were based on the distances from pond outlet toward offshore which were 25, 100, 200, 400, 800, 1600 and 3200 m. Sample of sediments were collected using sediment grab then about 1-1.5 kg of samples were stored in plastic bags for analysis of pH, redox potential, carbon organic. The in-situ measurements were conducted for pH and redox potential using a pH mV and pH meter, probe HANNA instruments HI 8424, whereas other sediment quality variables were analysed under laboratory. The results of this study showed that the pH sediments were ranged between 6.38 </em>–<em> 7.80 with average of 7.36. Redox potential of sediments ranged between -186 to 72 mV, average -</em><em> </em><em>88.39 mV. Carbon organic ranged between 0.30 </em>–<em> 9.85%, average 3.09%. Organic matter ranged between 0.30 </em>–<em> 9.85%, average 3.16%. Total nitrogen were ranged between 0.05 </em>–<em> 0.25% with average of 0.17%, phosphate were 8.62</em><em> </em>– <em>187.71 mg/L with average of 88.43 mg/L. Based on the sediment characteristics, the sediments of Punduh Bay had been polluted by organic matters.</em></p><p><em> </em></p><p><strong><em>Keywords</em></strong><em>: sediment characteristics, shrimp ponds, Punduh bay,                             Pesawaran district, Lampung </em><em>province</em></p>

Analysis of Intrinsic Fibrinolysis in Human Plasma Induced by Dextran Sulfate

1992 ◽  
Vol 67 (04) ◽  
pp. 440-444 ◽  
Author(s):  
Hiroko Tsuda ◽  
Toshiyuki Miyata ◽  
Sadaaki Iwanaga ◽  
Tetsuro Yamamoto
Keyword(s):  
Molecular Weight ◽  
Human Plasma ◽  
Dextran Sulfate ◽  
Tissue Type ◽  
Factor Xii ◽  
Normal Human Plasma ◽  
High Molecular Weight Kininogen ◽  
Single Chain ◽  
Major Pathway ◽  
Normal Human

SummaryThe analysis of normal human plasma by fibrin autography revealed four species of plasminogen activator (PA) activity related to tissue-type PA, factor XII, prekallikrein and urokinase-type PA (u-PA). The u-PA activity increased significantly by incubating plasma with dextran sulfate. This increase was coincident with both the cleavage of factor XII and the complex formation of activated factor XII with its plasma inhibitors, which were determined by immunoblotting procedure. The dextran sulfate-dependent activation of u-PA required both factor XII and prekallikrein, but did not require either plasminogen or factor XI. High molecular weight kininogen was required only at a low concentration of dextran sulfate. Thus the results indicate that the factor XII and prekallikrein-mediated activation of single chain u-PA (scu-PA) operates as a major pathway of scu-PA activation in whole plasma in contact with dextran sulfate.

Crop rotations with clover and their productivity

2020 ◽  
Author(s):  
Ol'ga Gladysheva ◽  
Oksana Artyuhova ◽  
Vera Svirina
Keyword(s):  
Forest Soil ◽  
Crop Rotation ◽  
Gray Forest Soil ◽  
Arable Land ◽  
Perennial Grasses ◽  
Crop Rotations ◽  
Field Crop ◽  
Pure Steam ◽  
Positive Effect

The results of long-term research in experiments with crop rotations with different clover saturation are presented. It is shown that the cluster has a positive effect on the main indicators of vegetation of dark-gray forest soil. The introduction of two fields of perennial grasses into the six-field crop rotation significantly increases both the humus reserves and increases the productivity of arable land by 1.5–2 times compared to the crop rotation with a field of pure steam.

Modes of agricultural use, productivity and fertility of developed lowland peat soils

2020 ◽  
Author(s):  
Aleksandr Glubokovskih
Keyword(s):  
Crop Rotation ◽  
Peat Soil ◽  
Perennial Grasses ◽  
Peat Soils ◽  
Fodder Crop ◽  
Agrochemical Properties ◽  
Agricultural Use ◽  
Fodder Crop Rotation

The results of many years of research on the cultivation of crops in fodder crop rotation on dried peat soil are presented. A productive and agroecological assessment of crop rotation with various saturation with perennial grasses is given. The data on the reduction of peat reserves and changes in the agrochemical properties of the soil are presented.

Fertilization System as a Factor of Transforming the Humus State of the Soil

2015 ◽  
Vol 2 (2) ◽  
pp. 39-44
Author(s):  
V. Lopushniak
Keyword(s):  
Crop Rotation ◽  
Podzolic Soil ◽  
Humus Content ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Content Increase ◽  
Energy Reserves ◽  
Gross Energy ◽  
Stable Forms

Aim. To establish the effect of different fertilization systems in short fi eld crop rotation on the change in the state of humus in the dark gray podzolic soils in Western Forest-Steppe of Ukraine. Methods. Field studies were carried out in a stationary experiment of the Department of Soil Science and Agricultural Chemistry of the L’viv National Agrarian University; determination of humus content – according to DSTU 4289:2004, and that of its labile forms – in accordance with DSTU 4732:2007, fraction-group composition – by Ponomare- va-Plotnikova’s method, according to the measurement procedure 31-497058-008-2002. Results. The use of organo-mineral fertilizer system in short fi eld crop rotation with the saturation of organic fertilizers of 15 t/ha of crop rotation contributes to the humus content increase by 0.7 % after the third rotation in 0–40 cm layer of dark gray podzolic soil, the increase in the share of stable forms of humic compounds up to 57–59 % and the increase in the ratio of R HA :R FA to 1.3–1.4. The study demonstrated very high dependence of amount of gross energy reserves in the humus on the R HA :R FA ratio. Conclusions. The combined application of organic fertili- zers in the form of manure, non-market of the crop (straw) and siderate, along with mineral fertilizers is re- commended in short fi eld crop rotations of Western Forest-Steppe of Ukraine toensure expanded reproduction of fertility of dark gray podzolic soil, improvement of its humus status, increase in gross energy reserves and the share of the stable forms and humic acids in the humus.

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