scholarly journals Characters of a nitrobacter enrichment culture from a freshwater aquaculture pond

2021 ◽  
Vol 35 (1) ◽  
pp. 1343-1352
Author(s):  
Mengying He ◽  
Ying Xiong ◽  
Kai Cheng
2020 ◽  
Vol 3 (2) ◽  
pp. 114
Author(s):  
Yohandri Yohandri

The Community Partnership Program (PKM) activity has been carried out in Nagari Sunua, Padang Pariaman District, West Sumatra. As for Sunua's diversity, many young people drop out of school and do not have permanent jobs. This activity aims to provide training in the manufacture of aquaponic systems that combine freshwater fish cultivation with vegetable cultivation simultaneously. Partners will be given training on how to use freshwater aquaculture pond water to grow vegetables. Pool water will be flowed in the pipes where the vegetable seeds are grown. Pond water becomes fertilizer and nutrition for vegetables. Water that has passed through vegetables in the next pipe will be flowed back into the pond. This aquaponic cultivation pattern is very beneficial because it can produce vegetables and fish simultaneously in one activity. This can be a new type of business for partner groups that have not. In general, these activities can be carried out well and increase the knowledge and skills of the members of the partners involved.


2021 ◽  
Author(s):  
Liming Liu ◽  
Lijunjun Zhou ◽  
Wenwen Gong ◽  
Anxiang Lu ◽  
Xiaotao Shi ◽  
...  

EnviroUS ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 74-80
Author(s):  
Munawar Ali ◽  
Annisa Nurjanna

The Benowo Landfill (TPA) in Surabaya applies the Open Dumping method so that it has the potential to produce leachate which can pollute the surrounding environment. The leachate storage system in TPA Benowo also plays a role in the possibility of leachate leaking into groundwater and polluting the quality of freshwater aquaculture pond water around Benowo TPA. The method used is the purposive sampling method, which is by taking several samples scattered around the center of the Benowo landfill waste dump, then testing the COD concentration, which is then the results of the COD measurement, plotted on a map to analyze the distribution pattern. The results showed that there was an indication that pond water around the Benowo landfill had been contaminated with leachate which was shown by the COD concentration in 14 test samples, only 3 according to the quality standard of PP RI No.82 of 2001.


2020 ◽  
Vol 51 (10) ◽  
pp. 4315-4326
Author(s):  
Qinglin Yang ◽  
Lijun Luo ◽  
Yanhong Jiang ◽  
Jiaojiao Zhang ◽  
Xiaoqi Tang ◽  
...  

2017 ◽  
Vol 25 (6) ◽  
pp. 5921-5933 ◽  
Author(s):  
Xiaobin Hu ◽  
Rongfei Zhang ◽  
Jinyun Ye ◽  
Xiang Wu ◽  
Yixiang Zhang ◽  
...  

2015 ◽  
Vol 2 (2) ◽  
pp. 32-38 ◽  
Author(s):  
N. Matvienko ◽  
A. Vashchenko ◽  
I. Tsiganok ◽  
L. Buchatsky

Aim. To investigate the epizootic state of fi sheries in Ukraine; to study the biological specifi cities of viral and bacterial isolates of fi sh in freshwater aquaculture. Methods. The epizootic state of fi sheries was defi ned ac- cording to the surveillance plan for fi sheries, virological (biosampling of sensitive fi sh species, virus isolation on sensitive passaged cell cultures), serological (enzyme immunoassay, virus neutralization test using sensitive passaged cell cultures) and molecular-biological (reverse transcriptase polymerase chain reaction − RTPCR) methods of investigation were used. The pathogenicity of the isolated bacteria was studied in the biosample. The identifi cation was performed using Bergey’s Manual. The express-identifi cation of bacteria was performed using the standardized test-system API 20E Bio Merieux (France). Results. The IPNV isolates of rainbow trout were fi rst isolated in the fi sheries of different forms of ownership in the western regions of Ukraine (Volyn, L’viv, Transcarpathian, Chernivtsi regions). It was demonstrated that different age groups of carp are infested with the virus in the fi sheries of L’viv, Donetsk, Chernihiv, Kyiv, and Odesa regions which testifi es to a wide spread of the virus in Ukraine. Out of fi sh infectious diseases the red spot-like disease and the swim bladder infl ammation of carp, the diseases of young trout and sturgeon were detected in the investigated fi sheries of Ukraine. Conclusions. The epizootic data were used to estimate the condition of the fi sheries in Ukraine in terms of fi sh infectious diseases. An infectious pancreatic necrosis virus, new for Ukraine, was revealed. It was found to affect rainbow trout (Oncorhynchus mykiss , Walbaum, 1792) and the spread of SVCV in carp fi sheries was demonstrated. As for bacterial fi sh diseases, the decrease in the epizootic situation was described along with considerable extension of the range of species of bacterial pathogens of fi sh. Annual systematic monitoring and measures of preventing the introduction of the agents of infectious diseases are the guarantee of protection of the specialized fi sheries of Ukraine.


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