Similarities and Differences between the Massive Eel (Anguilla anguillaL.) Devastations That Occurred in Lake Balaton in 1991 and 1995

Bálint, T.; Ferenczy, Judith; Kátai, Ferenc; Kiss, István; Kráczer, László; Kufcsák, O.; Láng, G.; Polyhos, Csaba; Szabó, István; Szegletes, T.; Nemcsók, J.

doi:10.1006/eesa.1996.1509

Cited by 66 publications

(29 citation statements)

References 36 publications

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“…Although the chance of pyrethroids entering aquatic environments is minimal, the risk of occasional contamination of water by pyrethroids should not be underestimated (Shan et al, 1997). Fish are sensitive aquatic organisms and show a wide range of responses to changes in their environment, as has been amply demonstrated by massive eel devastation in Lake Balaton in 1991 and 1995 (Balint et al, 1997). The sensitivity of fish to pyrethroids may be explained by their relatively slow metabolism and, therefore, elimination of the compounds (Bradbury and Coats, 1989b).…”

mentioning

confidence: 99%

Effects of acute exposure to bifenthrin on some haematological, biochemical and histopathological parameters of rainbow trout (Oncorhynchus mykiss)

Velíšek¹,

Svobodová²,

Piačková³

2009

Vet. Med.

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AbstrAct:The effect of the pyrethroid, bifenthrin, on rainbow trout (Oncorhynchus mykiss) was assessed based on biochemical, haematological and histopathological examination of fish exposed to Talstar 10 EC pesticide preparation (active substance 100 g/l bifenthrin) at a concentration of 14.7 µg/l. There was a significant (P < 0.01) decrease in plasma ammonia, and significant (P < 0.01) increase in glucose, creatine kinase, alkaline phosphatase and lactate dehydrogenase. Haematologically, fish showed a significant (P < 0.01) decrease in mean erythrocyte volume, erythrocyte haemoglobin, and band neutrophil granulocytes compared to controls. Degeneration of hepatocytes was observed histologically. The bifenthrin-based Talstar 10 EC pesticide preparation was therefore classified as a substance strongly toxic to fish.

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mentioning

confidence: 99%

Effects of acute exposure to bifenthrin on some haematological, biochemical and histopathological parameters of rainbow trout (Oncorhynchus mykiss)

Velíšek¹,

Svobodová²,

Piačková³

2009

Vet. Med.

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“…Furthermore, elevated lactate dehydrogenase (LDH) activity is a marker for metabolic changes in fish, i.e. glycogen catabolism and a glucose shift towards the formation of lactate, tissue damage in fish (Ramesh et al 1993), hypoxic conditions (Das et al 2004), and muscular harm (Balint et al 1997) and serves as a good diagnostic tool in toxicology. According to the literature trace metal exposure on glycolytic enzymes is controversial.…”

Section: Enzymatic Responsesmentioning

confidence: 99%

“…Alanine aminotransferase (ALAT) and aspartate aminotransferase (ASAT) are liver specific enzymes and they are more sensitive measures of hepatotoxicity and histopathologic changes and can be assessed within a shorter time (Balint et al, 1997). ALAT is present in high concentrations in the liver and to a lesser extent in the skeletal muscles, kidney and heart.…”

Section: Enzymatic Responsesmentioning

confidence: 99%

Biomarkers in European perch (Perca fluviatilis) liver from a metal-contaminated dam lake

et al. 2014

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The present study was carried out in three seasons -spring, summer and autumn in Topolnitsa Dam Lake (Bulgaria) which has been subjected to continuous contamination with trace metals due to copper extraction in the area. We investigated the trace metal levels in surface water and liver samples of European perch (Perca fluviatilis L.). We also linked the metal levels we determined with the various histological and biochemical changes which we observed. Lesions in the liver parenchyma were found to be degenerative and necrotic, as well as, they were presented as hyperemia which consequently leads to disturbances in the hepatic blood circulation. Activities of the hepatic enzymes lactate dehydrogenase (LDH), alanine aminotransferase (ALAT) and aspartate aminotransferase (ASAT) were found to be significantly elevated, particularly in summer. Therefore, based on our results we could recommend that the investigated tissue and cell alterations may be successfully applied as reliable biomarkers for monitoring polluted with a mixture of trace metals freshwater ecosystems.

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“…35,39,98 A utilização de estudos da alteração da atividade enzimática pela exposição in vivo na avaliação de áreas impactadas e seu monitoramento têm sido extensamente abordadas pela literatura, tanto para poluentes orgânicos como para metais. 50,87,[99][100][101] A titulo de exemplificação, na Tabela 2 é mostrada a susceptibilidade de várias enzimas após a exposição de algas a poluentes de origem agrícola.…”

Section: Estudos In Vivounclassified

Alteração da atividade enzimática em organismos aquáticos por poluentes de origem agrícola: uma abordagem geral e sobre a suscetibilidade da fosfatase ácida

Jonsson¹,

Aoyama²

2010

Quím. Nova

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Recebido em 26/2/09; aceito em 29/10/09; publicado na web em 12/3/10 ALTERATION OF ENZYMATIC ACTIVITY IN AQUATIC ORGANISMS BY AGRICULTURAL POLLUTANTS: A GENERAL APPROACH AND THE SUSCEPTIBILITY OF THE ACID PHOSPHATASE. The input of agrochemicals in the aquatic compartment can results in biochemical injuries for living organisms. In this context, the knowledge of alterations of enzymatic activities due the presence of agriculture pollutants contributes for the elucidation of the mechanisms of toxicity, implementation of economic methods for monitoring purposes and establishment of maximum allowed concentrations. In the present work, the above considerations are discussed, and data concerning changes in enzymatic function by pesticides and fertilizer contaminants are reviewed. Also, we focused on the acid phosphatase due its susceptibility to several pollutants and diversity in cellular functions.Keywords: enzyme; biomarker; pollution. INTRODUÇÃOCom a utilização de modernas práticas agrícolas, que resultaram na maior produção de alimentos, intensificaram-se os problemas causados por pragas. Além dos ácaros, nematoides, fungos e plantas daninhas, eram conhecidas cerca de 68.000 espécies de insetos de ação prejudicial até finais do século XX.1 O combate a estes organismos se faz através do uso de produtos químicos denominados agrotóxicos, sendo que sua utilização abusiva tem ocasionado problemas ao Homem e ao meio ambiente, além de representar uma constante ameaça para as gerações futuras e o equilíbrio dos ecossistemas. Entre estes compostos estão incluídos os inseticidas, acaricidas, herbicidas, fungicidas, nematicidas, entre outros.Os efeitos desses compostos para os organismos aquáticos são muito variados, seja pela quantidade de ingredientes ativos presentes no mercado, que são aproximadamente 300, no Brasil, seja pela enorme gama de espécies existentes nos corpos d'água.2,3 Assim sendo, a toxicidade das moléculas para uma determinada espécie pode variar até mais de 25.000 vezes e apresentar efeito letal na ordem de alguns microgramas por litro. 4,5 Lodo de esgoto é uma denominação genérica para o resíduo sólido gerado pelos sistemas de tratamento de águas residuais. Trata-se de um material heterogêneo, cuja composição depende do tipo de tratamento empregado para purificar o esgoto e das características das fontes geradoras (população e indústrias).6 O uso de lodo de esgoto como fonte alternativa de nutrientes (fertilizante) para as plantas tem sido apresentado como uma opção para seu descarte devido ao seu alto teor de matéria orgânica. A principal fonte desses elementos metálicos é o setor industrial. Deve-se levar que consideração que a preocupação com metais pesados e os possíveis efeitos prejudiciais a eles associados foi acentuada a partir do uso do lodo de esgoto em solos agrícolas. 7 Entretanto, a presença desses metais não é exclusividade destes resíduos, uma vez que fertilizantes químicos, corretivos e defensivos podem também contê-los. 8 Além de metais, o lodo de esgoto pode também conter contaminante...

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Similarities and Differences between the Massive Eel (Anguilla anguillaL.) Devastations That Occurred in Lake Balaton in 1991 and 1995

Cited by 66 publications

References 36 publications

Effects of acute exposure to bifenthrin on some haematological, biochemical and histopathological parameters of rainbow trout (Oncorhynchus mykiss)

Effects of acute exposure to bifenthrin on some haematological, biochemical and histopathological parameters of rainbow trout (Oncorhynchus mykiss)

Biomarkers in European perch (Perca fluviatilis) liver from a metal-contaminated dam lake

Alteração da atividade enzimática em organismos aquáticos por poluentes de origem agrícola: uma abordagem geral e sobre a suscetibilidade da fosfatase ácida

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