Estrogenic activity and contributing compounds in stagnant water bodies with massive occurrence of phytoplankton

2018 ◽  
Vol 136 ◽  
pp. 12-21 ◽  
Author(s):  
T. Prochazkova ◽  
E. Sychrova ◽  
J. Vecerkova ◽  
B. Javurkova ◽  
A. Otoupalikova ◽  
...  
Keyword(s):  
Estrogenic Activity ◽  
Water Bodies ◽  
Stagnant Water

Contribution of dissolved sulfates and sulfites in hydrogen sulfide emission from stagnant water bodies in Sri Lanka

Chemosphere ◽  
2003 ◽  
Vol 52 (5) ◽  
pp. 901-907 ◽  
Author(s):  
K.I.A. Kularatne ◽  
D.P. Dissanayake ◽  
K.R.R. Mahanama
Keyword(s):  
Hydrogen Sulfide ◽  
Sri Lanka ◽  
Water Bodies ◽  
Stagnant Water

The role of wind in the dispersal of floating seeds in slow-flowing or stagnant water bodies

2013 ◽  
Vol 25 (1) ◽  
pp. 262-274 ◽  
Author(s):  
Judith M. Sarneel ◽  
Boudewijn Beltman ◽  
Anneke Buijze ◽  
Roderick Groen ◽  
Merel B. Soons
Keyword(s):  
Water Bodies ◽  
Stagnant Water

scholarly journals Traditional Piscicidal Knowledge along the Chakpi River and other Water Bodies in Chandel District, Manipur State : Past and Present Scenario

2022 ◽  
Vol 22 (1) ◽  
pp. 86-91
Author(s):  
Kangjam Sonamani Singh ◽  
◽  
Athokpam Haribhushan
Keyword(s):  
Water Bodies ◽  
Technical Knowledge ◽  
Perceived Effectiveness ◽  
Stagnant Water ◽  
Traditional Use ◽  
Rate Analysis ◽  
Farming Community ◽  
Tree Barks ◽  
Indigenous Technical Knowledge ◽  
Effectiveness Index

The present study was undertaken with an aim to expound the various indigenous technical knowledge (ITK) practices centring around the stagnant or semi-stagnant water bodies in Chandel district of Manipur. The prevailing indigenous practices were considered and only three groups of indigenous practices were found to be rational in the present scenario which could be further assessed, documented and propagated for the benefit of farming community. The three group of indigenous practices involve the age-old methods of stupefying the fish in ponds or rivers using tree barks, roots and leaves of specific trees or plants having ichthyotoxic properties. Two filters were applied to identify the ITKs. The first filter being rationality therein only ITK practices having rationality score more than 2.4 being explained in the study. The second filter was mean perceived effectiveness index (MPEI). Of the 17 practices evaluated, 3 were rational (42.08%) while the remaining 14 were rejected as irrational (57.92%). The perceived effectiveness and adoption rate analysis of these age-old ITKs indicated that, the traditional use of stupefying barks was rated as rational (3.01), perceived as highly effective (2.60) and adopted by 78 per cent of the respondents whereas on the lower end, the method incorporating the juice extract of ichthyotoxic leaves was rated as rational (2.48), perceived as effective (1.9) and adopted by 48 per cent of respondents.

Burkholderia pseudomallei pathogenesis and survival in different niches

2020 ◽  
Vol 48 (2) ◽  
pp. 569-579
Author(s):  
Chee-Hoo Yip ◽  
Ahmad-Kamal Ghazali ◽  
Sheila Nathan
Keyword(s):  
Burkholderia Pseudomallei ◽  
Salt Water ◽  
Mortality Rates ◽  
Current Treatment ◽  
Water Bodies ◽  
Intracellular Pathogen ◽  
Stagnant Water ◽  
Wide Range ◽  
The Tropics ◽  
Highly Virulent

Burkholderia pseudomallei (Bp) is the causative agent of melioidosis, a disease of the tropics with high clinical mortality rates. To date, no vaccines are approved for melioidosis and current treatment relies on antibiotics. Conversely, common misdiagnosis and high pathogenicity of Bp hamper efforts to fight melioidosis. This bacterium can be isolated from a wide range of niches such as waterlogged fields, stagnant water bodies, salt water bodies and from human and animal clinical specimens. Although extensive studies have been undertaken to elucidate pathogenesis mechanisms of Bp, little is known about how a harmless soil bacterium adapts to different environmental conditions, in particular, the shift to a human host to become a highly virulent pathogen. The bacterium has a large genome encoding an armory of factors that assist the pathogen in surviving under stressful conditions and assuming its role as a deadly intracellular pathogen. This review presents an overview of what is currently known about how the pathogen adapts to different environments. With in-depth understanding of Bp adaptation and survival, more effective therapies for melioidosis can be developed by targeting related genes or proteins that play a major role in the bacteria's survival.

scholarly journals Androgenic and estrogenic activity in water bodies receiving cattle feedlot effluent in Eastern Nebraska, USA.

2004 ◽  
Vol 112 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Ana M Soto ◽  
Janine M Calabro ◽  
Nancy V Prechtl ◽  
Alice Y Yau ◽  
Edward F Orlando ◽  
...  
Keyword(s):  
Estrogenic Activity ◽  
Water Bodies ◽  
Cattle Feedlot

Zooplankton community changes between forest and meadow sections in small headwater streams, NW Poland

Biologia ◽  
2013 ◽  
Vol 68 (3) ◽  
Author(s):  
Robert Czerniawski
Keyword(s):  
Headwater Streams ◽  
Great Influence ◽  
Zooplankton Community ◽  
Water Bodies ◽  
Stagnant Water ◽  
Spatial Changes ◽  
Small Streams ◽  
Planktonic Rotifers ◽  
Zooplankton Communities ◽  
Nw Poland

AbstractHeadwater streams are important resources in production of organic matter, but zooplankton of headwater streams has rarely been studied. In the present study spatial changes in zooplankton communities between upper headwater forest section and downstream meadow section of four small streams were examined (NW Poland). The environmental conditions of stream riparian zone, e.g., the presence of leaf litter, pools, slackwaters and wetlands had a great influence on the spatial changes in zooplankton. Low gradient of stream bed, longer water residence time and larger surfaces of wetlands and slackwaters also positively affected zooplankton communities, especially in the meadow section. Along the streams, from the stream headwater to the downstream-meadow section, significant spatial changes in zooplankton communities were observed. Significantly higher number of taxa and density of zooplankton were observed in meadow sections than in headwater forest sections. In the forest sections, there was a definite domination of benthic and littoral rotifers in the zooplankton composition, while in the meadow sections, planktonic rotifers dominated. Cladocerans were observed only in downstream meadow section; two littoral species Coronatella rectangula and Peracantha truncata and one planktonic Daphnia magna which probably were washed from close pools of small stagnant water bodies. Copepods were noted along the entire length of streams. The occasional presence of planktonic rotifers in the forest section was probably caused by their washout from a few small stagnant water bodies.

scholarly journals Use Of Poachers’ Catches For Studying Fish Fauna In The Water Bodies Of The Transcarpathian Region (Ukraine)

2014 ◽  
Vol 16 (2) ◽  
pp. 107-118
Author(s):  
Alexander Didenko ◽  
Igor Velykopolsky ◽  
Andrey Chuklin
Keyword(s):  
Relative Abundance ◽  
Crucian Carp ◽  
Fish Fauna ◽  
Water Bodies ◽  
Beach Seine ◽  
Stagnant Water ◽  
Phoxinus Phoxinus ◽  
Gill Nets ◽  
Chondrostoma Nasus ◽  
Squalius Cephalus

Abstract We compared techniques used by poachers to capture fishes in the streams and stagnant water bodies of the Tisa River basin in Ukraine, which included: gill nets, lift nets, screen nets, electrofishing devices, spears, concussion, and beach seine. In total, 38 species were observed in poachers’ catches, among which the most abundant were nase (Chondrostoma nasus), Carpathian barbel (Barbus carpathicus), chub (Squalius cephalus), crucian carp (Carassius gibelio), and minnow (Phoxinus phoxinus). The highest diversity of species was observed in gill nets (25 species in rivers and 10 in stagnant waters), lift nets (20 species in rivers and eight in stagnant waters), and electrofishing (19 species). Poachers’ catches can provide information on fish species’ compositions and relative abundance in montane rivers; but there are biases associated with each technique.

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