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Histological biomarkers and microbiological parameters of an estuarine fish from the Brazilian Amazon coast as potential indicators of risk to human health

This study aimed to isolate and identify pathogenic bacteria in the intestinal tract, skin, and muscles of Sciades herzbergii ; detect histopathological changes in the gill and liver; and use these biomarkers for the assessment of potential risks to human health. Fish were sampled during the rainy a...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2024-07, Vol.196 (7), p.626, Article 626
Main Authors: de Macedo, Gustavo Henrique Rodrigues Vale, da Silva Castro, Jonatas, de Jesus, Wanda Batista, Costa, Ana Laíssa Pereira, do Carmo Silva Ribeiro, Rafael, de Jesus Roland Pires, Samanda, de Cássia Mendonça Miranda, Rita, da Cunha Araújo Firmo, Wellyson, da Silva, Luís Cláudio Nascimento, Costa Filho, Raimundo Nonato Diniz, Carvalho Neta, Raimunda Nonata Fortes, Pinheiro Sousa, Débora Batista Pinheiro
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Language:English
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Summary:This study aimed to isolate and identify pathogenic bacteria in the intestinal tract, skin, and muscles of Sciades herzbergii ; detect histopathological changes in the gill and liver; and use these biomarkers for the assessment of potential risks to human health. Fish were sampled during the rainy and dry seasons at two points in São Marcos Bay, Maranhão, Brazil: Ilha dos Caranguejos (IC) and Porto Grande (PG). Isolation and quantification were carried out using COLItest®. Colonies were subjected to identification and phenotypic investigation of antimicrobial resistance using Vitek®. Gill and liver samples were subjected to routine histological examination. The results indicated the presence of Klebsiella pneumoniae and Escherichia coli , the latter of which showed phenotypic resistance to norfloxacin and gentamicin. Fish caught at PG exhibited more extensive gill and liver damage than fish caught at IC. The findings suggest that histological changes in target organs of S. herzbergii may be influenced by infection with pathogenic bacteria .
ISSN:0167-6369
1573-2959
1573-2959
DOI:10.1007/s10661-024-12751-7