Size-fractionation of groundwater arsenic in alluvial aquifers of West Bengal, India: The role of organic and inorganic colloids

2014 ◽  
Vol 468-469 ◽  
pp. 804-812 ◽  
Author(s):  
Santanu Majumder ◽  
Bibhash Nath ◽  
Simita Sarkar ◽  
Debashis Chatterjee ◽  
Gabriela Roman-Ross ◽  
...  
Keyword(s):  
West Bengal ◽  
Size Fractionation ◽  
Alluvial Aquifers ◽  
Groundwater Arsenic

GROUNDWATER ARSENIC IN SHALLOW AQUIFERS OF BENGAL DELTA PLAIN (WEST BENGAL): A MICROBIOLOGICAL APPROACH

2016 ◽  
Author(s):  
Jishnu Adhikari ◽  
◽  
Debashis Chatterjee ◽  
Shilajit Barua ◽  
Thomas R. Kulp
Keyword(s):  
West Bengal ◽  
Shallow Aquifers ◽  
Bengal Delta ◽  
Delta Plain ◽  
Groundwater Arsenic

scholarly journals Occurrence of L1014F and L1014S mutations in insecticide resistant Culex quinquefasciatus from filariasis endemic districts of West Bengal, India

2022 ◽  
Vol 16 (1) ◽  
pp. e0010000
Author(s):  
Priyanka Rai ◽  
Dhiraj Saha
Keyword(s):  
Culex Quinquefasciatus ◽  
West Bengal ◽  
Economic Status ◽  
Minor Role ◽  
Resistance Development ◽  
Vector Population ◽  
A Minor ◽  
First Time

Introduction Lymphatic filariasis causes long term morbidity and hampers the socio-economic status. Apart from the available treatments and medication, control of vector population Culex quinquefasciatus Say through the use of chemical insecticides is a widely applied strategy. However, the unrestrained application of these insecticides over many decades has led to resistance development in the vectors. Methods In order to determine the insecticide susceptibility/resistance status of Cx. quinquefasciatus from two filariasis endemic districts of West Bengal, India, wild mosquito populations were collected and assayed against six different insecticides and presence of L1014F; L1014S kdr mutations in the voltage-gated sodium channel gene was also screened along with the use of synergists to evaluate the role of major detoxifying enzymes in resistance development. Results The collected mosquito populations showed severe resistance to insecticides and the two synergists used–PBO (piperonyl butoxide) and TPP (triphenyl phosphate), were unable to restore the susceptibility status of the vector thereupon pointing towards a minor role of metabolic enzymes. kdr mutations were present in the studied populations in varying percent with higher L1014F frequency indicating its association with the observed resistance to pyrethroids and DDT. This study reports L1014S mutation in Cx. quinquefasciatus for the first time.

Role of informal institutions in biodiversity conservation: Perspective of the Santhal tribe of India

2021 ◽  
Vol 27 (3) ◽  
pp. 139-146
Author(s):  
Edwin Murmu ◽  
◽  
Bhupendra Singh Adhikari ◽  
Harsh Bardhan Vashistha ◽  
◽  
...  
Keyword(s):  
Biodiversity Conservation ◽  
West Bengal ◽  
Life Stage ◽  
Informal Institutions ◽  
Group Discussions ◽  
Informal Institution ◽  
Key Informants ◽  
Specific Species ◽  
Conservation Of Biodiversity

The study provides insights into the role of an informal institution of the Santhal tribe of India in the conservation of biodiversity. The data has been collected from 124 Santhal key informants from six tribal districts from the states of Jharkhand (Dumka, Pakur and Sahibganj) and West Bengal (Birbhum, Bankura and West Medinipur) through the methods of stratified sampling, chain-referrals, personal interactions, and focussed group discussions. The taboos associated with biodiversity conservation have been categorized into six categories such as segment taboo, specific-species taboo, life-stage taboo, temporal taboo, habitat taboo and method taboo.

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