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dc.contributor.authorTAKESHITA, N. A.
dc.contributor.authorCHISTE, B. M.
dc.contributor.authorJONSSON, C. M.
dc.contributor.authorMATTIOLI, C. C.
dc.contributor.authorHISANO, H.
dc.date.accessioned2025-01-20T12:46:59Z-
dc.date.available2025-01-20T12:46:59Z-
dc.date.created2025-01-20
dc.date.issued2024
dc.identifier.citationInternational Aquatic Research, (2024). https://doi.org/10.22034/iar.2024.2008792.1707 [Online first: 14 October 2024]
dc.identifier.issn2008-6970
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1171732-
dc.descriptionAbstract: The present study evaluated the median lethal concentration (LC50-96h), risk assessment, biometrics of weight and length, and mortality of Nile tilapia Oreochromis niloticus larvae exposed to oxytetracycline (OTC). A total of 126 fish (mean weight: 32.25±3.74 mg; mean length: 13.01±0.64 mm; 7 larvae per aquarium) were utilized for the LC50-96h assessment. These fish were randomly distributed across 21 aquaria (1 L each) containing graded concentrations of OTC: 0.0, 2.01, 2.44, 3.31, 3.65, and 4.59 mg/L. Additionally, an acute stress test involving 180 fish (mean weight: 33.9±0.73 mg; mean length: 13.06±0.72 mm; 10 larvae per aquarium) was conducted, wherein the fish were subjected to air stress for 5 minutes before being randomly allocated to 18 aquaria (1 L each) and exposed to sub-lethal concentrations of OTC: 0.0, 0.03, 0.82, 1.65, 2.47, and 3.30 mg/L. Water quality parameters (temperature, pH, dissolved oxygen, conductivity, total ammonia, and total hardness) were monitored daily throughout the experiment. The LC50-96h for OTC in Nile tilapia larvae was estimated at 3.45 mg/L. Larval weight and length significantly decreased in both tests with increasing OTC exposure. Dissolved oxygen levels exhibited significant changes over 96 hours. The post-stress test revealed significant differences (P <0.05) in pH, temperature, and dissolved oxygen. Notably, pre-exposure to air stress exacerbated the toxic effects of sub-lethal OTC levels. Risk quotient analysis indicated a high potential risk for Nile tilapia larvae exposed to therapeutic OTC concentrations.
dc.language.isoeng
dc.rightsopenAccess
dc.titleAcute toxicity, risk assessment, and exposure of Nile tilapia larvae after stress to sub-lethal concentrations of oxytetracycline.
dc.typeArtigo de periódico
dc.subject.thesagroTilápia Nilótica
dc.subject.thesagroOreochromis Niloticus
dc.subject.thesagroLarva
dc.subject.thesagroAntibiótico
dc.subject.thesagroToxidez
dc.subject.nalthesaurusFreshwater fish
dc.subject.nalthesaurusFish larvae
dc.subject.nalthesaurusWater pollution
dc.subject.nalthesaurusAntibiotics
dc.subject.nalthesaurusAntibiotic residues
dc.subject.nalthesaurusRisk assessment
dc.subject.nalthesaurusToxicity
dc.subject.nalthesaurusAquaculture
dc.subject.nalthesaurusbiosafetyeng
riaa.ainfo.id1171732
riaa.ainfo.lastupdate2025-01-20
dc.contributor.institutionNATALIA AKEMI TAKESHITA; BRUNA MILKE CHISTE; CLAUDIO MARTIN JONSSON, CNPMA; CRISTIANO CAMPOS MATTIOLI; HAMILTON HISANO, CNPMA.
Aparece en las colecciones:Artigo em periódico indexado (CNPMA)

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