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- Title
Gill Histopathological Biomarkers in Fish Exposed to Trace Metals in the Todos os Santos Bay, Brazil.
- Authors
Oliveira, Heigon H. Queiroz; Reis-Filho, José Amorim; Nunes, José Anchieta C. C.; dos Santos, Renata Melo; de F. Esteves Santiago, Eunice; Aguilar, Letícia; de Mello Affonso, Paulo R. A.; da Cruz, André Luis
- Abstract
Histopathologies are widely recognized as biomarkers of environmental pollution. In this sense, we evaluated the putative relationship of gill histopathologies and distinct ecological impacts in two regions of Todos os Santos Bay (BTS), Brazil, the largest bay in Northeastern Brazil, South Atlantic. We compared the presence and concentration of metals (Al, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, V, and Zn) in water, sediments, and gills and gill histopathologies of a demersal fish (Diapterus rhombeus) and a benthic fish (Ogcocephalus vespertilio). As expected, fish and sediment samples from historically contaminated areas (Aratu) showed more remarkable traces of metals than apparently low-impact areas (Jaguaripe). Likewise, the DTC (degree of tissue change) index and the volume densities were higher in fish caught in Aratu. In addition, the Diapterus rhombeus species showed more potential than Ogcocephalus vespertilio for risk assessment as it showed more responses to the environment reflected on more histopathologies. These data support the effectiveness of incorporating functional gill morphology to monitor impacts on estuarine biota that can be used as a reference to improve the management of ecosystems and prevent harm to human health.
- Subjects
BRAZIL; GILLS; ECOSYSTEM management; GROUNDFISHES; BIOMARKERS; TRACE elements in water; ECOLOGICAL impact; TRACE metals
- Publication
Biological Trace Element Research, 2022, Vol 200, Issue 7, p3388
- ISSN
0163-4984
- Publication type
Article
- DOI
10.1007/s12011-021-02930-9