Histopathological changes in the gill and liver tissues of freshwater fish, Cirrhinus mrigala exposed to dichlorvos

Velmurugan, B.; Selvanayagam, Mariadoss; Cengiz, Elif İpek; Ünlü, Erhan

doi:10.1590/s1516-89132009000500029

Cited by 71 publications

(52 citation statements)

References 21 publications

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“…The observed pathological changes after butachlor treatment in the gills of rainbow trout are in agreement with reports in other fish species treated with different pollutants (Cengiz and Unlu 2003;Altinok and Capkin 2007;Velmurugan et al 2009;Ahmed et al 2013). This is perhaps because of the direct contact of gills with the toxin.…”

Section: Discussionsupporting

confidence: 91%

Histopathological and haematological response of male rainbow trout (Oncorhynchus mykiss) subjected to butachlor

Ahmadivand¹,

Farahmand²,

Mirvaghefi³

et al. 2014

Vet. Med. - Czech

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This study was aimed at assessing the histopathological and haematological effects of a widely used herbicide on rice paddy fields, i.e. butachlor, on rainbow trout. Fish were exposed to butachlor at a concentration of 0.39 mg/l, for a period of 10 days. Haematologically, fish showed a significant decrease in erythrocyte count, haemoglobin, white blood cells and lymphocytes and a significant increase in neutrophils compared to controls (P < 0.05). Histopathological observations of prepared sections of the treatment group also revealed pathological lesions of varying severity in studied organs, including liver (hyperaemia and haemorrhage, bile duct hyperplasia, dilated sinuses, interstitial oedema, monocellular necrosis, nuclear degeneration and hypertrophy in hepatocytes), gills (hyperplasia and hyperplasia of lamellar epithelium, fusion of lamellae, rod-like structures of secondary gill lamellae, cystic-like lesions) and kidneys (vacuolar degeneration of tubular epithelium, desquamation of epithelium and necrosis of tubular epithelium). It is concluded that butachlor caused changes in certain haematological parameters and histopathologically, exerted destructive effects on the gills, liver and kidneys of rainbow trout.

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Section: Discussionsupporting

confidence: 91%

Histopathological and haematological response of male rainbow trout (Oncorhynchus mykiss) subjected to butachlor

Ahmadivand¹,

Farahmand²,

Mirvaghefi³

et al. 2014

Vet. Med. - Czech

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“…; b -lamellar lifting in gills, exposed to 6.6 mg/L thiamethoxam, 400X; c -edema in gills, exposed to 6.6 mg/L thiamethoxam, 400X; d -proliferation of glandular cells and filamentous epithelium ( ) in gills, exposed to 10 mg/L thiamethoxam, 400X; e -fusion in gills, exposed to 20 mg/L thiamethoxam, 400X; f -degenerative alterations in gills, exposed to 10 mg/L thiamethoxam, 400X; g -degenerative alterations in gills, exposed to 10 mg/L thiamethoxam, 400X; h -vasodilatation in blood vessels of secondary lamellae in gills, exposed to 6.6 mg/L thiamethoxam, 400X; i -vasodilatation in gill filament blood vessels, exposed to 6.6 mg/L thiamethoxam, 400X. Lamellar lifting, edema and filamentous epithelial proliferation are histopathological alterations, which have been described by other authors who investigated the effects of pesticide contamination on aquatic species (Cengiz and Unlu 2002;Cengiz 2006;Velmurugan et al 2009). Similarly to the present results, they found that these changes were the most frequent in the gill histological structure under the influence of different pesticides.…”

Section: Resultsmentioning

confidence: 74%

Histopathological Alterations in Common Carp (Cyprinus carpio L.) Gills Caused by Thiamethoxam

Georgieva

Stoyanova

Velcheva

et al. 2014

Braz. arch. biol. technol.

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“…We saw pufferfish burrowed in the sand or wedged between rocks or urchins presumably in attempts to remain submerged, and sediment damage might have contributed to gill pathology. Epithelial chan ges in the gills can be caused by a variety of insults (Velmurugan et al 2009), and toxins can cause lamellar collapse (Mallatt 1985). We are less sure of the origin of rosettes within primary lamellae, as this pathology has not been described before in finfish.…”

Section: Discussionmentioning

confidence: 99%

Pufferfish mortality associated with novel polar marine toxins in Hawaii

Work

Moeller²,

Beauchesne³

et al. 2017

Dis. Aquat. Org.

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Fish die-offs are important signals in tropical marine ecosystems. In 2010, a mass mortality of pufferfish in Hawaii (USA) was dominated by Arothron hispidus showing aberrant neurological behaviors. Using pathology, toxinology, and field surveys, we implicated a series of novel, polar, marine toxins as a likely cause of this mass mortality. Our findings are striking in that (1) a marine toxin was associated with a kill of a fish species that is itself toxic; (2) we provide a plausible mechanism to explain clinical signs of affected fish; and (3) this epizootic likely depleted puffer populations. Whilst our data are compelling, we did not synthesize the toxin de novo, and we were unable to categorically prove that the polar toxins caused mortality or that they were metabolites of an undefined parent compound. However, our approach does provide a template for marine fish kill investigations associated with marine toxins and inherent limitations of existing methods. Our study also highlights the need for more rapid and cost-effective tools to identify new marine toxins, particularly small, highly polar molecules.

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Histopathological changes in the gill and liver tissues of freshwater fish, Cirrhinus mrigala exposed to dichlorvos

Abstract: ABSTRACT

Cited by 71 publications

References 21 publications

Histopathological and haematological response of male rainbow trout (Oncorhynchus mykiss) subjected to butachlor

Histopathological and haematological response of male rainbow trout (Oncorhynchus mykiss) subjected to butachlor

Histopathological Alterations in Common Carp (Cyprinus carpio L.) Gills Caused by Thiamethoxam

Pufferfish mortality associated with novel polar marine toxins in Hawaii

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