Advanced search
Start date
Betweenand

Fish parasites as bioindicators of heavy metal accumulation in the Jacaré-Pepira and Jacaré-Guaçú rivers, Tietê-Jacaré River Basin, State of São Paulo, Brazil

Grant number: 17/00566-5
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): June 01, 2017
Effective date (End): April 30, 2021
Field of knowledge:Agronomical Sciences - Fishery Resources and Fishery Engineering - Inland Water Fishery Resources
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Vanessa Doro Abdallah Kozlowiski
Grantee:Lucas Aparecido Rosa Leite
Home Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

Pollution of aquatic environments as a result of negative anthropogenic activities remains a major problem, causing disastrous effects on the health of living organisms and becoming the subject of many discussions. To obtain knowledge about the biological levels of pollutants available in the aquatic environment, bioindicators become a very useful tool in aiding the chemical analyzes of water that primarily describe the total concentration of the respective pollutant. Recent studies have shown that, in addition to already established indicators, certain parasites and their hosts can be used as biomonitoring tools, since the pollution also affects their health and, consequently, their occurrence and distribution. Several studies evaluating the role of parasites as accumulators and pollution indicators have been carried out over decades, using a wide parasite-host combination. In addition, the high potential of parasites for metal accumulation and their high effectiveness in the evaluation of aquatic pollution compared to free-living organisms has been clearly demonstrated. Therefore, the objective of this research project is to evaluate the cumulative capacity of heavy metals and the potential bioindicator of fish parasites by comparing the concentrations of the elements with the tissues of their respective hosts in the Jacaré-Pepira and Jacaré- Guaçú River, in the Tietê-Jacaré River basin, State of São Paulo, Brazil. For this, specimens of Hypostomus regani, Hoplias malabaricus and Cichla ocellaris will be collected monthly between March 2017 and March 2019, in both rivers. Samples of parasites (hirudines, nematodes and cestodes), as well as tissues (liver, muscle and intestine), as well as water and sediment from the same collection points will be taken from the fish. The concentration of metals will be determined by inductively coupled plasma mass spectrometry (ICP-MS), and the priority elements will be Magnesium (Mg), Aluminum (Al), Titanium (Ti), Chromium (Cr) (Ni), Copper (Cu), Zinc (Zn), Arsenic (As), Cadmium (Cd), Barium (Ba) and Lead (Pb). After obtaining the concentration data, the Shapiro-Wilk test will be applied to test the normality of the data, then the one-way ANOVA variance test will be applied to test if there are significant differences between the concentrations of the samples (p d 0.01 ). The Spearman correlation test will also be applied to verify if there are possible relationships / interactions between the concentrations of the elements in the tissues, parasites, water and sediment, as well as the sex, size and stage of maturation of the host. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ROSA LEITE, LUCAS APARECIDO; PEDREIRA FILHO, WALTER DOS REIS; DE AZEVEDO, RODNEY KOZLOWISKI; ABDALLAH, VANESSA DORO. Patterns of distribution and accumulation of trace metals in Hysterothylacium sp. (Nematoda), Phyllodistomum sp. (Digenea) and in its fish host Hoplias malabaricus, from two neotropical rivers in southeastern Brazil. Environmental Pollution, v. 277, MAY 15 2021. Web of Science Citations: 0.
LEITE, LUCAS A. R.; JANUARIO, FELIPE F.; PADILHA, PEDRO M.; DO LIVRAMENTO, EMMYLE T. C.; DE AZEVEDO, RODNEY K.; ABDALLAH, VANESSA D. Heavy Metal Accumulation in the Intestinal Tapeworm Proteocephalus macrophallus Infecting the Butterfly Peacock Bass (Cichla ocellaris), from Southeastern Brazil. Bulletin of Environmental Contamination and Toxicology, v. 103, n. 5, p. 670-675, NOV 2019. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.