Acute Toxicity of the Pesticides, Dichlorvos and Lindane against the African air-breathing catfish, Heterobranchus longifilis, Valenciennes, 1840 (Siluriformes: Clariidae)

2016 ◽  
Vol 10 (3) ◽  
pp. 272-278 ◽  
Author(s):  
Blessing J. Oribhabor ◽  
Grace C. Ikeogu
Keyword(s):  
Acute Toxicity ◽  
Air Breathing ◽  
Heterobranchus Longifilis

Acute toxicity bioassays of mercuric chloride and malathion on air-breathing fish Channa punctatus (Bloch)

2005 ◽  
Vol 61 (1) ◽  
pp. 114-120 ◽  
Author(s):  
Sanjay Pandey ◽  
Ravindra Kumar ◽  
Shilpi Sharma ◽  
N.S. Nagpure ◽  
Satish K. Srivastava ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Mercuric Chloride ◽  
Channa Punctatus ◽  
Air Breathing

scholarly journals Micronuclear induction in response to methylmercury exposure in the air breathing fish Anabas testudineus (Bloch, 1792)

2021 ◽  
Vol 68 (1) ◽  
Author(s):  
S. Swetha ◽  
R. B. Pramod Kiran
Keyword(s):  
Organic Compound ◽  
Acute Toxicity ◽  
Aquatic Ecosystems ◽  
Genetic Variations ◽  
Probit Analysis ◽  
Anabas Testudineus ◽  
Blood Samples ◽  
Air Breathing ◽  
Potential Biomarker ◽  
Methylmercury Exposure

Natural and man-made chemicals like mercury have been implicated as malefactors in various ailments and are even considered genotoxic since long. Methylmercury (MeHg), the organic compound of mercury, -is known to cause genetic variations in many organisms spanning all spheres of life. The present study was conducted to identify the formation of nuclear anomalies on exposure to MeHg in the freshwater air breathing fish Anabas testudineus (Bloch, 1792) using micronucleus (MN) assay. Acute toxicity (LC50) of MeHg was calculated to be 438 μg l-1 using probit analysis. The fishes were exposed to 1/5th concentration of LC50 (87.6 μg l-1 ) and blood samples collected on days 0, 4 and 15 were analysed for induction of MN. The percentage of MN formation per 1000 cells was the highest (19.35) in the juveniles on day 15. It is concluded that A. testudineus is sensitive to MeHg and micronuclear assay of the species can be used as a potential biomarker in the event of contamination in aquatic ecosystems.

scholarly journals Acute Toxicity Assessment of Mercury Chloride to Freshwater Air Breathing Fish Clarias batrachus (Linnaeus, 1758): In vivo Study 

2021 ◽  
Author(s):  
Khushbu Kumari ◽  
Gyanendra Bahadur Chand
Keyword(s):  
Acute Toxicity ◽  
Test Group ◽  
Aquatic Organism ◽  
Toxicity Assessment ◽  
Probit Analysis ◽  
Clarias Batrachus ◽  
Mercury Chloride ◽  
Air Breathing ◽  
Initial Stage

Background: Mercury is the most noxious heavy metal. Because of its environmental persistence and ability to be accumulated in the fatty tissues of aquatic organism, it poses serious threat to the fish community. Methods: In the present study, freshwater air breathing fish Clarias batrachus were exposed separately to different concentrations of Mercury chloride (HgCl2) for 24 hrs, 48 hrs, 72 hrs and 96 hrs. Firstly, median lethal concentration (LC50) of HgCl2 to fish was determined by Probit analysis and was confirmed by pilot test. The behavioral and locomotary changes were monitored.Result: Test group showed random irregular and rapid swimming, restless activity. Along with these activities the test group became hyperactive, started jumping and changing their direction and position in an irregular manner. Some of the noticeable physiological symptoms during the initial stage of toxicity assessment were rapid opercular movement and frequent gulping of air. Both jerky movement and rapid respiratory response were reported to be occasional and slower in the longer duration exposure. Acute toxicity assessment provides first hand information to keep a check on pollution and to observe and track rigours of aquatic ecosystems.

Acute and sub-acute toxicity methanolic extract from Brickellia cavanillesii in mice

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
GM Avila-Villarreal ◽  
DE Giles-Rivas ◽  
B Aguilar-Guadarrama ◽  
P Castillo-España ◽  
S Estrada-Soto
Keyword(s):  
Acute Toxicity ◽  
Methanolic Extract

Initial Studies of a Potent Antiheparin Agent (Ubiquin®)

1968 ◽  
Vol 20 (03/04) ◽  
pp. 588-595 ◽  
Author(s):  
E. B Goodsell ◽  
R. A Krause ◽  
E. T Kimura
Keyword(s):  
Side Effects ◽  
Acute Toxicity ◽  
Propylene Oxide ◽  
Toluidine Blue ◽  
Water Soluble ◽  
Per Se

SummaryUbiquin (oligo-3-(N-methylmorpholinium)-l,2-propylene oxide chloride) is a stable, water soluble, active heparin antagonist producing prompt neutralization when administered in a 1:1 ratio to rats and dogs. Initial studies indicate that it is devoid of any effect on coagulation per se; nor are there any obvious side effects manifested during the process of neutralization. The acute toxicity is less than that of other compounds in use: toluidine blue, protamine and hexadimethrine.

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