Haematological, biological and behavioural changes in Oreochromis niloticus (Linne 1757) juveniles exposed to Paraquat herbicide

Ada, Fidelis Bekeh; Ekpenyong, Edet; Ayotunde, E. O.

doi:10.5897/jece11.067

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…The sensitivity is known as a dose-response relationship, that is a fundamental in toxicology (Oulmi et al, 1995). Furthermore, similar relationship was found in the Clarias gariepinus exposed to paraquat (18 mgL -1 ), Mesopotamichthys sharpeyi (1.11 mgL -1 ), and Oreochromis niloticus (7 mgL -1 ) (Omitoyin et al, 2006;Ada et al, 2012;Safahieh et al, 2012) Behaviour changes are the most sensitive in indication of potential toxic effects (Farah et al, 2004). Anabas testudineus exhibited a number of behaviour changes when they were exposed to different concentrations of 5 paraquat.…”

Section: Discussion:-mentioning

confidence: 83%

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Behavioural Effects of Anabas Testudineus (Bloch 1792) Towards Sublethal Paraquat Exposure

Norhan¹,

Karim²,

Daud³

et al. 2019

IJAR

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A 96 hours acute toxicity test was completed in order to determine paraquat lethal concentration 50% (96H LC 50) value towards Anabas testudineus. The fish was subjected to 0, 5, 10, 20, 30 and 40 mgL-1 of paraquat under laboratory conditions. Fish mortality rate was directly proportional to paraquat concentration with a total 100% mortality recorded at 30 mgL-1 in 48 hours. The 96H LC 50 value of paraquat was 16.81 mgL-1 which is slightly toxic according to United States Fish and Wildlife Service. Regarding behavioural study, a 48 hours sublethal toxicity test was carried out with 2, 5, 12, and 15 mgL-1 of paraquat. Exposed fish exhibited agitated, respiratory distress and abnormal nervous behaviours which were the earliest response to paraquat The results of present study showed that paraquat is toxic to A. testudineus and any application towards aquatic environment must be handled with caution.

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Section: Discussion:-mentioning

confidence: 83%

“…In an acute toxicity test (96H LC 50 ), sixty healthy A. testudineus (40.0 ± 11.0g and 13.0 ± 1.0cm) were exposed to several series of paraquat concentrations (0, 5, 10, 20, 30 and 40 mgL -1 ), with a triplicate by following a method from Ada et al (2012). In conjunction to the test, water changes and feeding were prohibited.…”

Section: Acute Toxicity Testmentioning

confidence: 99%

Behavioural Effects of Anabas Testudineus (Bloch 1792) Towards Sublethal Paraquat Exposure

Norhan¹,

Karim²,

Daud³

et al. 2019

IJAR

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Time-Dependent Naphthalene Toxicity in Anabas testudineus (Bloch): A Multiple Endpoint Biomarker Approach

et al. 2020

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Polyaromatic compounds are the major, widespread contaminants in the aquatic environment. However, the adverse impacts of these compounds on blood pathophysiology (hematological profiling and serum biochemical responses) are poorly understood. As a consequence, this study was intended to evaluate the toxic effects of naphthalene, one of the polycyclic aromatic hydrocarbons, on the blood pathophysiology of Anabas testudineus using multiple end-point biomarker approach. A. testudineus was exposed to short-term (1 and 5 d) and long-term (10, 15, and 21 d) naphthalene concentrations, that is, T1 (0.71 mg/L indicates 25% of LC50) and T2 (1.42 mg/L indicates 50% of LC50 value). The results disclosed significant decrease in red blood cells, hemoglobin (Hb), packed cell volume, and platelet levels, while other blood parameters, namely, white blood cells, percent lymphocyte, mean cell volume, mean corpuscular Hb, and mean corpuscular Hb concentration showed enhanced levels under naphthalene intoxication. Results were more detrimental under T2 concentration. Cholesterol, glucose, calcium, high-density lipoprotein, and low-density lipoprotein levels gradually increased throughout the different exposure periods under T1 and T2 concentrations, while the triglyceride level gradually decreased during exposure periods. Finally, integrated biomarker responses (IBR) analysis indicated that serum biochemical parameters are more powerful than hematological parameters for determining the naphthalene-induced fish health status. Additionally, the IBR study clearly identified that long-term (>5 d) exposure was more harmful than short-term (<5 d) naphthalene exposure. So, these responses may be derived as biomarkers for monitoring naphthalene pollution in an aquatic ecosystem.

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Physiological effects of paraquat in juvenile African catfish Clarias gariepinus (Burchel 1822)

2014

JCLM

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Haematological, biological and behavioural changes in Oreochromis niloticus (Linne 1757) juveniles exposed to Paraquat herbicide

Cited by 4 publications

References 24 publications

Behavioural Effects of Anabas Testudineus (Bloch 1792) Towards Sublethal Paraquat Exposure

Behavioural Effects of Anabas Testudineus (Bloch 1792) Towards Sublethal Paraquat Exposure

Time-Dependent Naphthalene Toxicity in Anabas testudineus (Bloch): A Multiple Endpoint Biomarker Approach

Physiological effects of paraquat in juvenile African catfish Clarias gariepinus (Burchel 1822)

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