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Fraga PD, de Mello Gabriel GV, do Carmo JB, Espindola ELG, Pinto TJDS. Sugarcane vinasse provokes acute and chronic responses and bioaccumulation of metals in benthic macroinvertebrates. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:4067-4079. [PMID: 38097830 DOI: 10.1007/s11356-023-31446-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/05/2023] [Indexed: 01/19/2024]
Abstract
Brazil is a major producer of sugarcane bioethanol, which has raised concerns about its environmental impact. The industrial process for obtaining ethanol generates a by-product with a high pollution potential called vinasse. If vinasse reaches watercourses, it may affect the biological communities, such as the aquatic macroinvertebrates, which include species sensitive to environmental contamination. Thus, this study evaluated the ecotoxicological effects of sugarcane vinasse on tropical benthic macroinvertebrates (Allonais inaequalis, Chironomus sancticaroli, Strandesia trispinosa, and Hyalella meinerti). The study was divided into three phases. First, acute toxicity tests were carried out with the four species. The species A. inaequalis (average LC50 = 0.460% confidence interval, CI 0.380-0.540%) was more sensitive to vinasse than C. sancticaroli (LC50 0.721%, CI 0.565-0.878%), H. meinerti (EC50 0.781%, CI 0.637-0.925%), and S. trispinosa (EC50 1.283%, CI 1.045-1.522%). In the second phase, the consequences of chronic exposure to vinasse were assessed in the two more sensitive species. Impairments in reproduction and population growth rates for A. inaequalis and on the development, metamorphosis, and body growth of C. sancticaroli larvae occurred. Finally, the bioaccumulation of metals after chronic exposure was determined in the third phase. Vinasse provoked decreases in the body residue of the essential metals Zn and Mn and the accumulation of Cd, Pb, and Cr with the potential for biomagnification throughout the food webs. Low concentrations of vinasse (below 1%) provoked lethal and sublethal effects on benthic organisms, with several cascade effects on aquatic environments, given the ecological importance of this group in freshwater and terrestrial ecosystems.
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Affiliation(s)
- Priscille Dreux Fraga
- São Carlos Engineering School (EESC), Center of Water Resources and Environmental Studies (CRHEA), Nucleus of Ecotoxicology and Applied Ecology (NEEA), University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 13560-970, Brazil.
| | - Gabriele Verônica de Mello Gabriel
- Federal University of São Carlos (UFSCar), Department of Physics, Chemistry, and Mathematics, Rodovia João Leme Dos Santos, SP-264, Km 110, Sorocaba, São Paulo, 18052-780, Brazil
| | - Janaina Braga do Carmo
- Federal University of São Carlos (UFSCar), Department of Physics, Chemistry, and Mathematics, Rodovia João Leme Dos Santos, SP-264, Km 110, Sorocaba, São Paulo, 18052-780, Brazil
| | - Evaldo Luiz Gaeta Espindola
- São Carlos Engineering School (EESC), Center of Water Resources and Environmental Studies (CRHEA), Nucleus of Ecotoxicology and Applied Ecology (NEEA), University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 13560-970, Brazil
- Post-Graduate Program in Environmental Engineering Sciences, EESC/CRHEA, NEEA, University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 13560-970, Brazil
| | - Thandy Junio da Silva Pinto
- São Carlos Engineering School (EESC), Center of Water Resources and Environmental Studies (CRHEA), Nucleus of Ecotoxicology and Applied Ecology (NEEA), University of São Paulo, Av. Trabalhador São Carlense, 400, São Carlos, 13560-970, Brazil
- Analytical Chemistry Department, Institute of Chemistry, University of Campinas, Campinas, São Paulo, Brazil
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Liu T, Zhang L. Multigenerational effects of arsenate on development and reproduction in marine copepod Tigriopus japonicus. CHEMOSPHERE 2023; 342:140158. [PMID: 37709060 DOI: 10.1016/j.chemosphere.2023.140158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/21/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Arsenic (As) is a persistent toxic substance, however, its toxicity to marine zooplankton remains unclear. In this study, copepods were exposed to a series of dissolved arsenate (As(V)) for four generations (F0-F3) and subsequently depurated in clean seawater for two generations (F4-F5) to assess multigenerational toxicity of As(V). As(V) exposure prolonged copepod development. The development time were 1.9, 2.4, and 3.4 days longer than the control in F0 when exposed to 50, 100, and 500 μg/L As(V), respectively, and the toxicity increased with generations. Moreover, As(V) reduced the reproductive capacity of copepods, and this effect become more severe during generation succession. The 10-day fecundities were reduced from 80 to 85 eggs per female in the control to 42 eggs per female, the lowest level, in 500 μg/L As(V) exposure group in F3. Nevertheless, the fecundity was recovered to the control level in the offspring of the 50 and 100 μg/L As(V) exposed groups (F4), suggesting it was an acclimation effect of copepods during As(V) exposure. In addition, the survival rate, development time, and reproductive parameters were significantly correlated with the As accumulation in copepods. Overall, As(V) exposure caused As bioaccumulation which negatively affected copepods' survival, development, and reproductive traits, and this toxic effect was amplified with generations and concentrations. Therefore, the multigenerational toxicity of As should be considered in the environmental risk assessments.
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Affiliation(s)
- Tianrui Liu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China; Sanya Institute of Ocean Eco-Environmental Engineering, Sanya, 572025, China.
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Fai PBA, Ngogang JN, Kouemo MD, Nfor B, Fobil JN, Basu N. Association between heavy metal uptake and growth and reproduction in the anecic earthworm, Alma nilotica (Grube 1855). ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:1162-1173. [PMID: 37864594 DOI: 10.1007/s10646-023-02707-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/09/2023] [Indexed: 10/23/2023]
Abstract
Elevated heavy metal concentrations in soils are a cause for concern as they are hazardous to soil organisms including earthworms which are considered as ecosystem engineers. Current ecotoxicity tests predominantly use temperate earthworm species, and thus there is the need to include a broader genera of native species to improve ecological risk assessment. Alma nilotica, is a tropical anecic earthworm species that survives well under laboratory conditions and has potential for use in ecotoxicology testing but lacks published toxicity data for important pollutants. Growth and reproduction bioassays were carried out with A. nilotica to determine the relationship between the concentrations of Cu, Zn, Pb and Cr in spiked soils and their bioaccumulation and toxic effects. Positive linear relationships were found between soil-metal and internal earthworm-metal concentrations. Cu did not inhibit growth up to 35 days of exposure but became toxic with longer exposure duration. Zn was not regulated by A. nilotica although it is an essential metal that is well regulated by Eisenia sp. commonly used in standard ecotoxicity tests, showing differences in metal regulation by earthworms of different ecological categories. Based on bioaccumulation factors (BAFs), growth inhibition and reproduction effects the metals were ranked in decreasing toxicity as Pb > Cr > Zn > Cu. The mean 20% Internal Effects Concentrations (IEC20s) for reproduction were 1.04, 2.9, 8.3 and 224.2 mg metal kg-1 earthworm for Pb, Cr, Zn and Cu respectively. These data can contribute to the improvement of metal risk assessment particularly in tropical contexts.
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Affiliation(s)
- Patricia Bi Asanga Fai
- Department of Animal Biology, Dschang School of Science and Technology, University of Dschang, BP 96 Dschang, Dschang, West Region, Cameroon.
- Department of Agricultural and Environmental Engineering, College of Technology, University of Bamenda, P.O. Box 70 Bambili, Bambili, North West Region, Cameroon.
| | - Josephine Ngoune Ngogang
- Department of Animal Biology, Dschang School of Science and Technology, University of Dschang, BP 96 Dschang, Dschang, West Region, Cameroon
| | - Mariette Djeukam Kouemo
- Department of Animal Biology, Dschang School of Science and Technology, University of Dschang, BP 96 Dschang, Dschang, West Region, Cameroon
| | - Brian Nfor
- Department of Animal Biology, Dschang School of Science and Technology, University of Dschang, BP 96 Dschang, Dschang, West Region, Cameroon
| | - Julius N Fobil
- Department of Biological, Environmental and Occupational Health, University of Ghana, Accra, Ghana
| | - Niladri Basu
- Department of Natural Resource Sciences, Faculty of Agricultural and Environmental Sciences, McGill University, Quebec City, QC, Canada
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