H. C. Silva de Assis

Publications60
h-index23
Citations1,538
Highly Influential Citations58
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Morphological and Neurotoxicological Findings in Tropical Freshwater Fish (Astyanax sp.) After Waterborne and Acute Exposure to Water Soluble Fraction (WSF) of Crude Oil
The water-soluble fraction (WSF) of crude oil is a complex highly volatile and toxic mixture of hydrocarbon chains (polyaromatics, heterocyclics), phenols, and heterocyclic compounds containing… Expand
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Evaluation of tributyltin subchronic effects in tropical freshwater fish (Astyanax bimaculatus, Linnaeus, 1758).
Tributyltin (TBT) is widely used as a biocide in antifouling paints. Astyanax bimaculatus adult fish were acclimatized in a laboratory and isolated in groups of eight individuals. Two groups were… Expand
  • 59
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Effects of dietary Pb(II) and tributyltin on neotropical fish, Hoplias malabaricus: histopathological and biochemical findings.
Trahira (Hoplias malabaricus) used to investigate the effects of successive Pb(II) or tributyltin (TBT) dietary doses. After 70 days of acclimation, individuals were exposed to 21 microg Pbg(-1) or… Expand
  • 132
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The effect of trichlorfon on acetylcholinesterase activity and histopathology of cultivated fish Oreochromis niloticus.
Among the most extensively used compounds in aquaculture for the treatment of parasitic organisms are the organophosphates (e.g., trichlorfon). The influence of trichlorfon, applied to the treatment… Expand
  • 70
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Analyses of paralytic shellfish toxins and biomarkers in a southern Brazilian reservoir.
The Alagados Reservoir (Brazil) is an important source for the supply of water, recreation and fishery. Since 2002, the occurrence of cyanobacterial blooms (paralytic shellfish toxins - PST… Expand
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Multibiomarker assessment of three Brazilian estuaries using oysters as bioindicators.
Oysters have been largely employed as bioindicators of environmental quality in biomonitoring studies. Crassostrea rhizophorae was selected to evaluate the health status of three estuarine areas… Expand
  • 65
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Effects of trophic exposure to dexamethasone and diclofenac in freshwater fish.
Steroidal and non-steroidalanti-inflammatories are pharmaceutical prescribed in human medicine and have the potential to contaminate water and sediments via inputs from sewage treatment plants. Their… Expand
  • 49
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Toxic effects of DDT and methyl mercury on the hepatocytes from Hoplias malabaricus.
Here, we examined the impact of dichlorodiphenyltrichloroethane (DDT) and monomethyl mercury (MeHg) on the redox milieu and survival of hepatocytes from Hoplias malabaricus (traíra). After isolation… Expand
  • 64
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Evaluation of Biochemical, Genetic and Hematological Biomarkers in a Commercial Catfish Rhamdia quelen Exposed to Diclofenac
Juveniles Rhamdia quelen fish species were exposed to diclofenac for 96 h at concentrations of 0.2, 2, and 20 μg/L. Biochemical, genetic, and hematological biomarkers were assessed in the liver,… Expand
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Multibiomarker in fish to evaluate a river used to water public supply.
We aimed to evaluate the ecological integrity of a large river, which receives agricultural and urban effluents and is used to water public supply. The fish species Astyanax bifasciatus was used as… Expand
  • 35
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