Gill histopathological alterations in Nile tilapia, Oreochromis niloticus exposed to treated sewage Water

Fontaínhas‐Fernandes, A.; Luzio, Ana; Garcia-Santos, Sofia; Carrola, João; Monteiro, Sandra M.

doi:10.1590/s1516-89132008000500023

Cited by 24 publications

(5 citation statements)

References 30 publications

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“…When applied in morphological investigations, biomarkers are sensitive tools for the early detection of environmental changes (De la Torre et al 2005 ; Heier et al 2009 ; Marcovecchio 2004 ; Rayment and Barry 2000 ). Biomarkers demonstrate correlations between environmental factors and their outcomes, and they provide insight into both the status of an ecosystem and the status of a given organism (Flores-Lopes and Thomaz 2011 ; Fontainhas-Fernandes et al 2008 ; Gernhofer et al 2001 ; Maria et al 2009 ; Sorour and Harbey 2012 ; Strzyżewska et al 2015 ; Velcheva 2002 ; Yancheva et al 2015 ). Fish gills comprise one of these biomarkers: the gill is a metabolically active tissue involved in gaseous exchange, and it accumulates a significant proportion of toxins (Abrahamson et al 2008 ; Andres et al 2000 ; Benli and Ozkul 2008 ; Evans et al 2005 ; Marcovecchio 2004 ; Poleksic and Mitrovic-Tutundzic 1994 ; Strzyżewska et al 2016 ; Thophon et al 2003 ).…”

Section: Introductionmentioning

confidence: 99%

Gills as morphological biomarkers in extensive and intensive rainbow trout (Oncorhynchus mykiss, Walbaum 1792) production technologies

Strzyżewska-Worotyńska

Szarek

Babińska

et al. 2017

Environ Monit Assess

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We investigated environmental impacts on rainbow trout (Oncorhynchus mykiss) reared at fish farms with either extensive technology, in a flow-through system (FTS, n = 3), or intensive technology, in a recirculating aquaculture system (RAS, n = 3). All fish were fed the same rations. Fish were caught in spring and autumn (body mass, 501–750 g) from these six farms. We performed macroscopic (intact fish) and microscopic (gills stained with haematoxylin/eosin) examinations. Lesions were categorised based on the type and location of structural abnormalities. The histopathological index (HAI) was calculated, and each lesion was scored. Fish reared in FTS or RAS were compared for the prevalence of morphological lesions. Gill epithelial hypertrophy and hyperplasia comprised 73% (RAS) to 79% (FTS) of all morphological abnormalities. In spring and autumn, lesions comprised, respectively, 11 and 18% (FTS) and 16 and 10% (RAS) mucous and chloride cell abnormalities and 8 and 4% (FTS) and 10 and 3% (RAS) blood vessel abnormalities. Diffuse, irreversible gill lesions were observed sporadically in all fish. Gill epithelium received the most exposure to environmental pathogens. HAIs indicated that normal gill architecture and minor lesions predominated in all fish. However, among trout caught in spring, moderate and extensive changes in gills occurred more commonly with RAS (34%) than with FTS (17%). Trout caught in autumn displayed no great differences. These results indicated that FTS prepared fish better than RAS for wintering. Moreover, we showed that gills were an excellent biomarker for analysing the impact of extensive and intensive production environments on rainbow trout.

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Section: Introductionmentioning

confidence: 99%

Gills as morphological biomarkers in extensive and intensive rainbow trout (Oncorhynchus mykiss, Walbaum 1792) production technologies

Strzyżewska-Worotyńska

Szarek

Babińska

et al. 2017

Environ Monit Assess

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“…Effects of wastewater have been evaluated on individual analysis of serum chemistry (Bernet et al, 2001), hematology (Maceda-Veiga et al, 2010, oxidative stress (Almroth et al, 2008), some reproductive parameters (Akande et al, 2010;Galus et al, 2013), histopathology and infectious agents (Escher et al, 1999;Bernet et al, 2000;Fontaínhas-Fernandes et al, 2008). However, to obtain a holistic and integrative overview of how untreated sewage effluent exposure affects fish health we carried out a field caging experiment to analyze multiple biomarker responses, which included morphological indices, biochemical and hematological parameters as well as oxidative stress markers.…”

Section: Introductionmentioning

confidence: 99%

Deleterious effects of wastewater on the health status of fish: A field caging study

Cazenave

Bacchetta

Rossi

et al. 2014

Ecological Indicators

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“…Metal bioaccumulation leads to disturbances in cell metabolism and negative changes in the morphological structure of organs. There are reports on the effects of metals on histological changes in gills, both in field and laboratory conditions (Fontaínhas-Fernandes et al, 2008;Mohamed, 2009), however, it is often difficult to decide whether morphological alterations are adaptive or destructive (Tkacheva et al, 2004). We presume that alterations in gills, such as lamellar lifting and edema, could serve as a protective mechanism of the fish organism against the metal-contaminated waters of Topolnitsa Reservoir.…”

Section: Discussionmentioning

confidence: 93%

Histological alterations under metal exposure in gills of European perch (Perca fluviatilis L.) from Topolnitsa Reservoir (Bulgaria)

Georgieva

Yancheva

Velcheva

et al. 2015

ARCH BIOL SCI BELGRA

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Topolnitsa Reservoir is located in a region of Bulgaria rich in copper mines where intensive mining has been ongoing for several decades. General data on the ecological status of the reservoir and the effects of metal on fish is relatively scarce. The first aim of the study was to measure the concentrations of six metals (As, Cd, Cu, Ni, Pb and Zn) in water samples and in the gills of European perch (Perca fluviatilis L.). The second objective was to examine gill structure and determine the severity of histological alteration as a result of metal exposure. Surface water and fish gill samples were collected in spring, summer and autumn in 2012 and metal and histological analyses were performed. Metal concentrations in the water samples varied, but only Cu concentrations were determined in all three seasons and they were higher than the maximum permissible levels. The gill metal concentrations were significantly higher (P<0.05) than in the water. Examination of gill structure revealed the presence of proliferative and degenerative changes, as well as changes in the blood vessels. Histological lesions were similar in their severity in all three seasons. This study provides the first information about metal effects on the morphology of European perch gills from Topolnitsa Reservoir. It can be concluded that the metal contamination of the Topolnitsa Reservoir and fish is chronic and that it can negatively affect the structure and function of fish gills. As metals display a tendency to accumulate in fish gills, their effects are expected to become more severe with time, as they affect gill functions. This article has been corrected. Link to the correction <a href="http://dx.doi.org/10.2298/ABS1801215E">10.2298/ABS1801215E</a>

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Gill histopathological alterations in Nile tilapia, Oreochromis niloticus exposed to treated sewage Water

Abstract: Adult Nile tilapia, Oreochromis niloticus, of both sexes were exposed in wastewater from

Cited by 24 publications

References 30 publications

Gills as morphological biomarkers in extensive and intensive rainbow trout (Oncorhynchus mykiss, Walbaum 1792) production technologies

Gills as morphological biomarkers in extensive and intensive rainbow trout (Oncorhynchus mykiss, Walbaum 1792) production technologies

Deleterious effects of wastewater on the health status of fish: A field caging study

Histological alterations under metal exposure in gills of European perch (Perca fluviatilis L.) from Topolnitsa Reservoir (Bulgaria)

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