Toxicity and sub-lethal effects of temephos, lambda-cyhalothrin and cypermethrin on predatory insect Diplonychus rusticus Fabricius (Hemiptera: Belostomatidae)

2020 ◽  
Author(s):  
Appadurai Daniel Reegan ◽  
Bosvin Ben Bentrock ◽  
Antony Cruz Asharaja ◽  
Samuel Tennyson ◽  
Rajasingh Raveen
Keyword(s):  
Lethal Effects ◽  
Lambda Cyhalothrin ◽  
Predatory Insect

Stability Mechanism of Lambda-Cyhalothrin O/W Emulsion Prepared with Esterified Starch as Emulsifier

2012 ◽  
Vol 29 (3) ◽  
pp. 332
Author(s):  
Yuan ZHANG ◽  
Jian SHANG ◽  
Xiaobing ZHANG ◽  
Feng LIU
Keyword(s):  
Lambda Cyhalothrin

A New Fluorescent Salen-uranyl Sensor for the Sub-ppm Detection of Chemical Warfare Agents

2020 ◽  
Vol 24 (20) ◽  
pp. 2378-2382
Author(s):  
Andrea Pappalardo ◽  
Chiara M.A. Gangemi ◽  
Rosa Maria Toscano ◽  
Giuseppe Trusso Sfrazzetto
Keyword(s):  
Real Time ◽  
Fluorescent Sensor ◽  
Chemical Warfare Agents ◽  
Optical Response ◽  
Chemical Warfare ◽  
Lethal Effects ◽  
Strong Affinity ◽  
Chemical Attack ◽  
Fluorescence Measurements ◽  
Warfare Agents

Real-time sensing of Chemical Warfare Agents (CWAs) is today a crucial topic to prevent the lethal effects of a terroristic chemical attack. For this reason, the development of efficient, selective, sensitive and reversible sensoristic devices, able to detect by optical response ppm levels of these compounds, is strongly required. Here, the synthesis of a new fluorescent sensor based on a salen-uranyl scaffold, functionalized with two bodipy moieties, and its application for the detection of sub-ppm levels of CWAs is reported. Detection properties were evaluated by fluorescence measurements and selectivity tests demonstrated the strong affinity for CWAs.

Understanding gas bubble trauma in an era of hydropower expansion: how do fish compensate at depth?

2020 ◽  
Vol 77 (3) ◽  
pp. 556-563 ◽  
Author(s):  
Naomi K. Pleizier ◽  
Charlotte Nelson ◽  
Steven J. Cooke ◽  
Colin J. Brauner
Keyword(s):  
Bubble Growth ◽  
Gas Bubble ◽  
Hydroelectric Dams ◽  
Dissolved Gas ◽  
Empirical Relationships ◽  
Lethal Effects ◽  
Exposed Fish ◽  
Total Dissolved Gas ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship

Hydrostatic pressure is known to protect fish from damage by total dissolved gas (TDG) supersaturation, but empirical relationships are lacking. In this study we demonstrate the relationship between depth, TDG, and gas bubble trauma (GBT). Hydroelectric dams generate TDG supersaturation that causes bubble growth in the tissues of aquatic animals, resulting in sublethal and lethal effects. We exposed fish to 100%, 115%, 120%, and 130% TDG at 16 and 63 cm of depth and recorded time to 50% loss of equilibrium and sublethal symptoms. Our linear model of the log-transformed time to 50% LOE (R2 = 0.94) was improved by including depth. Based on our model, a depth of 47 cm compensated for the effects of 4.1% (±1.3% SE) TDG supersaturation. Our experiment reveals that once the surface threshold for GBT from TDG supersaturation is known, depth protects rainbow trout (Oncorhynchus mykiss) from GBT by 9.7% TDG supersaturation per metre depth. Our results can be used to estimate the impacts of TDG on fish downstream of dams and to develop improved guidelines for TDG.

The lethal effects and determinants of microcystin-LR on heart: a mini review

Toxin Reviews ◽  
2020 ◽  
pp. 1-10 ◽  
Author(s):  
Muwaffak Alosman ◽  
Linghui Cao ◽  
Isaac Yaw Massey ◽  
Fei Yang
Keyword(s):  
Lethal Effects
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