The effect of environmental oxygen and carbon dioxide levels on the tissue oxygenation and the behavior of Antarctic fish

Fanta, Edith; Lucchiari, Pedro Hélio; Bacila, Metry

doi:10.1016/0300-9629(89)90507-0

Cited by 11 publications

(5 citation statements)

References 18 publications

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“…Consequently, the experimental fish tries to compensate the lower levels of oxygen in its tissue by an increase of the respiratory frequency, as the same was observed in M. gulio. This is observed not only after intoxication with chemicals, but always when there is a change in the respiratory lamellae, caused by any environmental changes (Fanta-Feofiloff et al 1986;Fanta et al 1989Fanta et al , 1995. Several other studies have shown similar effects of pesticides on fish gills in accordance with our present study Unlu 2002, 2003).…”

Section: Discussionmentioning

confidence: 99%

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Paruruckumani¹,

Rajan²,

Ganapiriya³

et al. 2015

Aquat. Living Resour.

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-Bioaccumulation and ultrastructural alterations in gill and liver tissues of 3-month old Asian sea bass, Lates calcarifer, in response to copper were studied by transmission electron microscopy (TEM). Fishes were exposed to two sublethal concentrations of copper (6.83 ppm and 13.66 ppm) for a period of 28 days. Accumulation of copper were higher in the liver followed by gills. The damaging effects of the histoarchitecture of gill tissues in coper-exposed sea bass were hypertrophy and hyperplasia of epithelial cells, severe oedema, telangiectasia and secondary lamellar fusion. In addition extensive vasodilation with stretching and necrosis of pillar cells were also noted. The liver showed hydropic swelling of hepatocytes with nuclear pyknosis and chromatin condensation. Blood congestion in sinusoids and accumulations of lipid droplets in the hepatocytes at higher concentrations were observed.

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Section: Discussionmentioning

confidence: 99%

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Paruruckumani¹,

Rajan²,

Ganapiriya³

et al. 2015

Aquat. Living Resour.

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“…Oxygen and the cardiovascular and ventilatory systems. Fanta et al (10) showed that ventilation frequencies of Antarctic fish (Notothenia sp., Trematomus sp.) decrease under hyperoxia, an effect that has been reported for various marine and freshwater fish species (2,14).…”

Section: Discussionmentioning

confidence: 99%

“…When measuring white muscle tissue PO 2 invasively with microelectrodes, Fanta et al (10) found decreasing muscle oxygenation under hyperoxia in one notothenioid species. However, even within the same genus, this was not a general response to elevated oxygen levels.…”

Section: Discussionmentioning

confidence: 99%

Oxygen-limited thermal tolerance in Antarctic fish investigated by MRI and³¹P-MRS

Mark

Bock

Pörtner

2002

American Journal of Physiology-Regulatory, Integrative and Comp

112

134

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The hypothesis of an oxygen-limited thermal tolerance was tested in the Antarctic teleost Pachycara brachycephalum. With the use of flow-through respirometry, in vivo (31)P-NMR spectroscopy, and MRI, we studied energy metabolism, intracellular pH (pH(i)), blood flow, and oxygenation between 0 and 13 degrees C under normoxia (PO(2): 20.3 to 21.3 kPa) and hyperoxia (PO(2): 45 kPa). Hyperoxia reduced the metabolic increment and the rise in arterial blood flow observed under normoxia. The normoxic increase of blood flow leveled off beyond 7 degrees C, indicating a cardiovascular capacity limitation. Ventilatory effort displayed an exponential rise in both groups. In the liver, blood oxygenation increased, whereas in white muscle it remained unaltered (normoxia) or declined (hyperoxia). In both groups, the slope of pH(i) changes followed the alpha-stat pattern below 6 degrees C, whereas it decreased above. In conclusion, aerobic scope declines around 6 degrees C under normoxia, marking the pejus temperature. By reducing circulatory costs, hyperoxia improves aerobic scope but is unable to shift the breakpoint in pH regulation or lethal limits. Hyperoxia appears beneficial at sublethal temperatures, but no longer beyond when cellular or molecular functions become disturbed.

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“…Consequently, the fish tries to compensate the lower levels of oxygen in its tissue by an increase of the respiratory frequency, as was observed in 0 URRVHYHOWL. This is observed not only after intoxication with chemicals, but always when there is a change in the respiratory lamellae, caused by any environmental changes (FantaFeofiloff et al, 1986;Fanta et al, 1989;1995). The microridges are structures commonly found on the branchial surface of the fish (Eiras-Stofella et al, 2001).…”

Section: '6and86621mentioning

confidence: 99%

Effects of the organophosphorous methyl parathion on the branchial epithelium of a freshwater fish Metynnis roosevelti

Machado

Fanta

2003

Braz. arch. biol. technol.

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Gills are vital structures for fish, since they are the main site for gaseous exchange as well as partially responsible for osmorregulation, acid-basic balance, excretion of nitrogenous compounds and taste. Chemicals in the water may alter the morphology of branchial cells of fish that are, therefore, a useful model for environmental impact and ecotoxicology studies. In order to investigate the effects of an organophosphorous compound, methyl parathion, on the gills of the fish, samples of Metynnis roosevelti were exposed to lethal (7ppm) and sublethal (1ppm) doses of Mentox 600 CE. Through light and scanning electron microscopy, shrinking of the branchial epithelium, followed by detachment and hyperplasia were observed. Externally, the branchial filaments presented the gradual disappearance of microridges. Even in sublethal doses, the organophosphorous reduced the health and fitness of these fish, as consequence of secondary effects derived from changes in the branchial epithelium, impairing oxygenation and ionic balance of the organism.
As brânquias são estruturas vitais para peixes, pois são o principal local de trocas gasosas, assim como parcialmente responsáveis pela osmorregulação, pelo equilíbrio ácido-básico, pela excreção de compostos nitrogenados e pela gustação. Compostos químicos na água podem alterar a morfologia das células branquiais de peixes, que se constituem, dessa forma, em um útil modelo para estudos de impacto ambiental. Visando investigar os efeitos de um composto organofosforado, o metil paration, em brânquias de peixes, exemplares de Metynnis roosevelti foram expostos a doses letais (7ppm) e subletais (1ppm) de Mentox 600 CE. Observações em microscopia óptica e eletrônica de varredura evidenciaram enrugamento do epitélio branquial, seguido por descolamento e hiperplasia. Externamente, os filamentos branquiais apresentaram desaparecimento gradual das microssaliências. Os resultados mostram que, mesmo em doses subletais, o organofosforado poderá levar o animal a sofrer conseqüências secundárias decorrentes das alterações da superfície de trocas gasosas e iônicas

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The effect of environmental oxygen and carbon dioxide levels on the tissue oxygenation and the behavior of Antarctic fish

Cited by 11 publications

References 18 publications

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Oxygen-limited thermal tolerance in Antarctic fish investigated by MRI and³¹P-MRS

Effects of the organophosphorous methyl parathion on the branchial epithelium of a freshwater fish Metynnis roosevelti

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The effect of environmental oxygen and carbon dioxide levels on the tissue oxygenation and the behavior of Antarctic fish

Cited by 11 publications

References 18 publications

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Bioaccumulation and ultrastructural alterations of gill and liver in Asian sea bass,Lates calcarifer(Bloch) in sublethal copper exposure

Oxygen-limited thermal tolerance in Antarctic fish investigated by MRI and31P-MRS

Effects of the organophosphorous methyl parathion on the branchial epithelium of a freshwater fish Metynnis roosevelti

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Oxygen-limited thermal tolerance in Antarctic fish investigated by MRI and³¹P-MRS