Hematological and immunological responses in the African catfish Clarias gairepinus exposed to sublethal concentrations of herbicide Ronstar®

Oluah, Ndubuisi Stanley; Aguzie, Ifeanyi Oscar; Ekechukwu, Nkiru Esther; Madu, Josephine Chinenye; Ngene, Chinedu Innocent; Oluah, Chidinma

doi:10.1016/j.ecoenv.2020.110824

Cited by 27 publications

(12 citation statements)

References 58 publications

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“…Reduction of IgM activity respondent to tissue damage, cellular apoptosis, and suppressed B lymphocyte function. Reduction of IgM level in this study agreed with the effect of bifenthrin on Nile tilapia [ 18 ]; Ronstar® on Clarias gariepinus [ 33 ]; deltamethrin on Gobiocypris rarus, Chinese rare minnow [ 62 ].…”

Section: Discussionsupporting

confidence: 86%

“…Blood biomarkers (RBC, WBC, HGB); stress biomarkers (SOD, CAT, GST, cortisol, HSP70, HSP90), and immunological responses like IgM and C3 are the validated method to study the impact of acute and chronic toxicity of agrochemicals in fish [ 1 , 4 , 32 , 33 ]. Fish blood acts as a carrier medium for distributing metabolites, toxicants, and chemicals to different parts of the body [ 4 , 33 ]. Upon pesticide exposure, free radicals such as O 2 − , H 2 O 2 , OH- are produced inside the body which leads to tissue damage.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, GST scavenges H 2 O 2 and lipid hydroperoxides. However, GOT and GPT can be used to indicate the tissue damage under stress conditions [ 1 , 32 ] which ultimately impaired the immunoglobulin level, protein synthesis and,/or cellular apoptosis [ 4 , [32] , [33] , [34] ].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the effect of sub-lethal acute toxicity of Emamectin benzoate in Labeo rohita using multiple biomarker approach

et al. 2022

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Assessment of the effect of sub-lethal acute toxicity of Emamectin benzoate in Labeo rohita using multiple biomarker approach

et al. 2022

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“…in eel ( Anguilla anguilla ) infected with the virulent nematode Anguillicola crassus (Haenen et al . 2010), or have been found in response to exposure to pesticides (Oluah et al . 2020), and even in anticipation of predation risk (Meuthen et al .…”

Section: Methodsmentioning

confidence: 99%

Sperm of more colorful males are better adapted to ovarian fluids in lake char (Salmonidae)

Nusbaumer

Garaud

Guttry

et al. 2021

Preprint

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Fish often spawn eggs with ovarian fluids that have been hypothesized to support sperm of some males over others (cryptic female choice). Alternatively, sperm reactions to ovarian fluids could reveal male strategies linked to their likely roles during spawning. Sperm of males who would usually be close to females during spawning are then expected to be better adapted to the presence of ovarian fluids than to water only, while the reverse would be expected for males that typically spawn at larger distance to the females. We tested these predictions with gametes and ovarian fluids from wild-caught lake char (Salvelinus umbla). We found that sperm of more colorful males showed increased sperm velocity in diluted ovarian fluids while sperm of paler males were fastest in water only. We then let equal numbers of sperm compete for fertilizations in the presence or absence of ovarian fluids and used microsatellite markers to assign in total 1,464 embryos (from 70 experimental trials) to their fathers. Overall, sperm of more colorful males reached higher fertilization success than sperm of pale males. This difference was enhanced by the presence of ovarian fluids and best explained by the increased sperm velocity. Sperm competitiveness was not enhanced with decreasing male inbreeding coefficients or decreasing genetic distance to a given female, although parallel stress tests on embryos revealed that females would profit more from mating with least related males rather than most colored ones. We conclude that sperm of more colorful males are best adapted to ovarian fluids, and that the observed reaction norms reveal male strategies rather than cryptic female choice.

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“…Significantly lower RBC and haematocrit values have also been observed under Termifos exposure in C. gariepinus [6]. Herbicide Ronstar significantly reduced the erythrocyte count and Hb concentration in C. gariepinus juvenile [49]. On the other hand, organophosphate pesticide, Phostoxin and DD-Force induced significant (P < 0.05) elevation in RBC and platelets values in the exposed fish C. gariepinus [8].…”

Section: Effect Of Some Pesticides On Haematological Parametersmentioning

confidence: 81%

A Review on Toxicity of Pesticides in Catfishes: Reproductive, Haematological and Biochemical Aspects

Suchiang¹

2021

ARRB

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This review article focuses on the effect of pesticides on reproductive functions, haematological and biochemical changes in catfishes. Pesticides are chemical substances that are released into the environment to control the populations of harmful pests. Pesticide exposure leads to toxicity in aquatic organisms, including fishes which are particularly sensitive to pesticides. The acute and sublethal concentrations of pesticides in the aquatic environment result in different lethal alterations, including changes in reproductive functions, histology, haematology, proteins, glucose, lipids, enzymes, etc. Pesticides act as endocrine disruptor compounds and have the potential to impair reproductive function in catfishes. Alterations in haematological and biochemical parameters are used as efficient biomarkers in assessing the toxicity of pesticides in fishes.

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Hematological and immunological responses in the African catfish Clarias gairepinus exposed to sublethal concentrations of herbicide Ronstar®

Cited by 27 publications

References 58 publications

Assessment of the effect of sub-lethal acute toxicity of Emamectin benzoate in Labeo rohita using multiple biomarker approach

Assessment of the effect of sub-lethal acute toxicity of Emamectin benzoate in Labeo rohita using multiple biomarker approach

Sperm of more colorful males are better adapted to ovarian fluids in lake char (Salmonidae)

A Review on Toxicity of Pesticides in Catfishes: Reproductive, Haematological and Biochemical Aspects

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