The use of bioindicators for assessing the effects of pollutant stress on fish

Adams, S. Marshall; Shepard, K.L.; Greeley, Mark S.; Jiménez, Braulio D.; Ryon, M.G.; Shugart, Lee R.; McCarthy, John F.; Hinton, David E.

doi:10.1016/0141-1136(89)90284-5

Cited by 166 publications

(88 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…al., 2002;Schmalz et al, 2002;Stentiford et al, 2003). The advantage of histopathology as a biomarker lies in its intermediate location in the hierarchy of biological organization; therefore, it is able to integrate the effects of both abiotic factors such as chemicals or temperature, and of biotic factors such as pathogens on organ function and fi sh health (Adams et al, 1989;Teh et al, 1997;Segner and Braunbeck, 1998;Handy et al, 2002). At the same time, the integrative nature of the histopathological alterations implicates that they often cannot be assigned to a specifi c causative factor, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Since fi sh health is a multi-parametric endpoint, we used a combination of several, both specifi c and integrative health indices (cf. Adams et al, 1989;Triebskorn et al, 2001;Broeg et al, 2005): 7-ethoxyresorufi n-O-deethylase (EROD) activity was measured to indicate exposure of brown trout to dioxin-like xenobiotics and polycyclic aromatic hydrocarbons (PAH). These contaminants have been involved in several cases of declining fi sh populations (Fairbrother et al, 1999;Rolland, 2000;Whyte et al, 2000;van der Oost et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of fish health status in four Swiss rivers showing a decline of brown trout catches

et al. 2007

View full text Add to dashboard Cite

Abstract.A pronounced decline in catch of brown trout (Salmo trutta L.) over the last 10-20 years has been reported for many rivers in Switzerland. Impaired health status of the fi shes has been suggested as one possible cause of the decline. The present study investigated the health status of juvenile brown trout from four Swiss rivers which experienced reductions of brown trout catches during the last two decades: Emme, Liechtensteiner Binnenkanal (LBK), Necker and Venoge. A gradient approach was applied, studying at each river a headwater (HW), midstream (D1) and downstream site (D2). Fish health was assessed by the following indices: hepatic 7-ethoxyresorufi n-O-deethylase (EROD) activity, organ (liver, kidney) histopathology, and gross biometric indices (condition factor, hepatosomatic index). Hepatic EROD activities were generally low without showing signifi cant within-or between-stream differences. Histopathological alterations of the liver displayed a moderate downstream increase in the Emme, LBK and Necker, but not in the Venoge. Between-stream differences of liver pathology were small. Kidney histopathology was not different between upstream and downstream sites, except for Emme and Venoge, where fi shes at the downstream sites were infected with the parasite Tetracapsuloides bryosalmonae, the cause of the proliferative kidney disease (PKD). The fi ndings from this study point to an association of within-stream gradients in water quality, PKD prevalence, fi sh health and brown trout biomass, whereas between-stream differences of actual fi sh health status refl ecting the different levels of catch declines observed in the four rivers during the last two decades are not evident.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of fish health status in four Swiss rivers showing a decline of brown trout catches

et al. 2007

View full text Add to dashboard Cite

show abstract

“…O estresse é produzido por um fator ambiental, físico ou biológico que requer ajustes fisiológicos e/ou bioquímicos, resultando numa diminuição da capacidade de sobrevivência do animal em persistindo a exposição ao agente estressante (VAL;SILVA;VAL, 2004). Peixes, quando submetidos a estresse ambiental apresentam como resposta aguda, a mortalidade crônica e baixo desenvolvimento (ADAMS, 1990). O estresse acumulativo pode ser considerado a maior fonte de perda de produtividade na piscicultura intensiva (SIGISMONDI; WEBER, 1988).…”

Section: Avaliação Do Desempenhounclassified

Efeito do núcleo homeopático homeopatila 100® na eficiência produtiva em alevinos revertidos de tilápia do nilo (Oreochromis niloticus)

et al. 2010

View full text Add to dashboard Cite

Efeito do núcleo homeopático homeopatila 100® na eficiência produtiva em alevinos revertidos de tilápia do nilo (Oreochromis niloticus)Effect of core homeopathic homeopatila 100® in productive efficiency of fingerlings reverted from nile tilapia (Oreochromis niloticus) ResumoFoi pesquisado o efeito do Núcleo Homeopático Homeopatila 100® na integridade histológica branquial, na sobrevivência, peso, comprimento final, conversão alimentar aparente e índice hepatossomático em alevinos de tilápia do Nilo (Oreochromis niloticus). Foi utilizado um tratamento controle (T1) com 20mL de solução hidroalcólica (álcool 30° GL) a cada kg de ração e três tratamentos com 20mL/kg (T2), 40mL/kg (T3) e 60mL/kg (T4) do Núcleo Homeopático Homeopatila 100®, em alevinos machos revertidos, com peso e comprimento médio inicial de 1,05 ± 0,32g e 4,15 ± 0,42cm respectivamente. Foi distribuído um total de 832 alevinos em 16 caixas d´agua com capacidade individual de 2000 litros, contendo 1000 litros cada uma, onde permaneceram durante 61 dias. No final do experimento, não foi observada diferença estatística entre os diferentes tratamentos nas alterações histológicas examinadas nas brânquias: elevação epitelial, hiperplasia, telangectasia e fusão lamelar. Os alevinos que receberam 40mL/kg de ração de Homeopatila 100® (T3) apresentaram maior sobrevivência e índice hepatossomático menor do que os alevinos do grupo controle (T1). Palavras-chave: Aqüicultura, histologia, homeopatia populacional, piscicultura AbstractIt was researched the effect of Core Homeopathic Homeopatila 100® on the integrity branchial histological, weight, final length, survival, feed conversion and apparent index hepatossomátic in fingerlings from Nile tilapia (Oreochromis niloticus). We used in the control treatment (T1) with 20mL/ kg water-alcohol solution (alcohol 30 GL) and three treatments with 20mL/kg (T2), 40mL/kg (T3) e 60mL/kg (T4) of core homeopathic Homeopatila 100® in fingerlings male reversed, with initial weight and initial length the 1,05 ± 0,32g and 4,15 ± 0,42cm respectively. It was distributed a total of 832 fingerlings in 16 polyethylene water tanks with individual capacity of 2000 liters, contends 1000 liters each one, where they ha remained during 61 days. At the end of experiment, was not observed statistic difference between the different treatments in histological changes examined in gills: epithelial lifting, hyperplasia, telangectasy and lamellar fusion. The fingerlings which received 40mL/kg of Homeopatila 100® (T3) showed a higher rate of survival and also lower rate than the other hepatossomátic the fingerlings in control group (T1).

show abstract

“…The study aimed at assessing the suitability of histological and ultrastructural responses as biomarkers of environmental contamination in aquatic ecosystem. Cellular biomarkers including histological and ultrastructural alterations represent an intermediate level of biological organization between lower-level biochemical effects and higher-level population effects [21,22], which mainly occur earlier than reproductive changes and are more sensitive for evaluation of organism health than a single biochemical response [23,24].…”

Section: Discussionmentioning

confidence: 99%

Cytopathological Effects of Almix Herbicide on Gill, Liver and Kidney of Oreochromis niloticus under Field and Laboratory Conditions

Samanta¹,

Pal²,

Mukherjee³

et al. 2016

Toxicol Open Access

View full text Add to dashboard Cite

Objective: Present study was aimed to study the cytopathological effects of almix herbicide in Indian freshwater teleost, Oreochromis niloticus (Linn.) both under field and laboratory exposure. Methods:O. niloticus (Linn.) was exposed to almix herbicide at sublethal concentrations of 8 g/acre and 66.67 mg/L under field and laboratory conditions respectively for 30 days. Field experiment was performed in cage, submerged in the field pond. Cytopathological study both through light and electron microscopic (scanning electron microscopy and transmission electron microscopy) observations were based on gill, liver and kidney.Results: Histopathological observations revealed hypertrophy and proliferation in gill epithelium, curling and fusion of secondary gill lamellae (SGL), distortion in chloride and pillar cells under laboratory experiment. Scanning electron microscopy displayed severe loss of normal array of concentric microridges, swelling of microridges, damage in epithelial cells and appearance of vacuoles on the stratified epithelium, while loss of regular pattern of microridges were observed under field condition. Transmission electron microscopic study of gill showed severe damages which included degenerative changes in mitochondria, cellular vacuolation, damage in tubule vascular system, presence of lipid droplets, elongated nucleus, but in case of field experiment dilated mitochondria and cytoplasmic vacuolation were more prominent. Degenerative hepatopancreas, necrosis in hepatocytes, severe cytoplasmic vacuolation and disarrangement of hepatic cords in liver of O. niloticus were prominent seen under light microscopy in the laboratory condition, but in field condition elongated hepatocytes with increased nuclei and vacuolation in cytoplasm of hepatocytes were prominent, while TEM study showed degeneration in mitochondria, dilation in rough endoplasmic reticulum, damage in nucleus and appearance of cytoplasmic vacuolation in hepatocytes under laboratory condition. In kidney, degenerative changes in PCT and DCT, shrinkage of glomerulus, vacuolation in the haematopoietic tissues and excess fat deposition were notable changes. In TEM study necrosis in nucleus, severe vacuolation, appearance of endoplasmic reticulum as whorl pattern, degeneration in mitochondria in kidney were serious after almix exposure. Conclusion:Present study claimed the more profound responses under laboratory condition compared to field and different significant marked changes in these two conditions were prominent. Therefore, these responses in gill, liver and kidney of O. niloticus could be considered as potential biomarkers of exposure of agrochemicals.

show abstract

The use of bioindicators for assessing the effects of pollutant stress on fish

Cited by 166 publications

References 5 publications

Assessment of fish health status in four Swiss rivers showing a decline of brown trout catches

Assessment of fish health status in four Swiss rivers showing a decline of brown trout catches

Efeito do núcleo homeopático homeopatila 100® na eficiência produtiva em alevinos revertidos de tilápia do nilo (Oreochromis niloticus)

Cytopathological Effects of Almix Herbicide on Gill, Liver and Kidney of Oreochromis niloticus under Field and Laboratory Conditions

Contact Info

Product

Resources

About