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Islam N, Garcia da Fonseca T, Vilke J, Gonçalves JM, Pedro P, Keiter S, Cunha SC, Fernandes JO, Bebianno MJ. Perfluorooctane sulfonic acid (PFOS) adsorbed to polyethylene microplastics: Accumulation and ecotoxicological effects in the clam Scrobicularia plana. MARINE ENVIRONMENTAL RESEARCH 2021; 164:105249. [PMID: 33477023 DOI: 10.1016/j.marenvres.2020.105249] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 06/12/2023]
Abstract
Microplastics are widespread in the marine environment, whereby the uptake of these tiny particles by organisms, can cause adverse biological responses. Plastic debris also act as a vector of many contaminants, herein depending on type, size, shape and chemical properties, possibly intensifying their effects on marine organisms. This study aimed to assess the accumulation and potential toxicity of different sizes of microplastics with and without adsorbed perfluorooctane sulfonic acid (PFOS) in the clam Scrobicularia plana. Clams were exposed to low-density polyethylene microplastics (1 mg L-1) of two different sizes (4-6 and 20-25 μm) virgin and contaminated with PFOS (55.7 ± 5.3 and 46.1 ± 2.9 μg g-1 respectively) over 14 days. Microplastic ingestion, PFOS accumulation and filtration rate were determined along with a multi biomarker approach to assess the biological effects of microplastics ingestion. Biomarkers include oxidative stress (superoxide dismutase, catalase, glutathione peroxidases), biotransformation enzymes (glutathione-S-transferases activity), neurotoxicity (acetylcholinesterase activity), oxidative damage and apoptosis. Microplastics ingestion and PFOS accumulation was microplastic size dependent but not PFOS dependent and filtration rate was reduced at the end of the exposure. Reactive oxygen species in gills and digestive gland were generated as a result of exposure to both types of microplastics, confirming the disturbance of the antioxidant system. Larger virgin microparticles lead to stronger impacts, when compared to smaller ones which was also supported by the Integrated Biomarker Responses index calculated for both tissues. An anti-apoptotic response was detected in digestive glands under exposure to any of the MPs treatments.
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Affiliation(s)
- Naimul Islam
- Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - Tainá Garcia da Fonseca
- Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - Juliano Vilke
- Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal; Fishery Engineering Department, Santa Catarina State University, Laguna, 88790-000, Brazil
| | - Joanna M Gonçalves
- Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - Paulo Pedro
- Laboratório de Análises Químicas, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal
| | - Steffen Keiter
- Man-Technology-Environment Research Centre (MTM), School of Science and Technology, Örebro University, Fakultetsgatan 1, S-701 82, Örebro, Sweden
| | - Sara C Cunha
- LAQV-REQUIMTE, Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - José O Fernandes
- LAQV-REQUIMTE, Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - M J Bebianno
- Centre for Marine and Environmental Research (CIMA), Universidade do Algarve, Campus de Gambelas, 8000-139, Faro, Portugal.
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Sola MCR, Santos AG, Martinez ST, Nascimento MM, da Rocha GO, de Andrade JB. Occurrence of 3-nitrobenzanthrone and other powerful mutagenic polycyclic aromatic compounds in living organisms: polychaetes. Sci Rep 2020; 10:3465. [PMID: 32103055 PMCID: PMC7044212 DOI: 10.1038/s41598-020-60369-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/11/2020] [Indexed: 11/09/2022] Open
Abstract
In this work we report the occurrence of powerful mutagenic 3-nitrobenzanthrone (3-NBA), in addition to 18 polycyclic aromatic hydrocarbons (PAHs), 6 oxygenated PAHs and 27 nitrated PAHs in polychaete worms. Benzanthrone (BA), another important mutagenic polycyclic aromatic compound (PAC) also was detected in the samples. Polychaete annelids have great ecological relevance, being widely distributed in different environmental conditions, from intertidal zones up to seven thousand feet deep areas. They are abundantly found in both contaminated and uncontaminated areas and, therefore, used as indicators of the pollution status of a given area. As we know, so far, most of these PACs has not been previously reported in living organisms before. The 3-NBA concentrations determined in this study were within 0.11-5.18 µg g-1. Other relevant PACs such as PAHs, quinones and nitro-PAHs were found in maximum concentrations at 0.013 µg g-1 (coronene) to 11.1 µg g-1 (benzo[k]fluoranthene), 0.823 µg g-1 (9,10-phenenthrenequinone) to 12.1 µg g-1 (1,4-benzoquinone) and 0.434 (1-nitronaphthalene) µg g-1 to 19.2 µg g-1 (6-nitrobenzo[a]pyrene), respectively. Principal component analysis (PCA), ternary correlations and diagnostic ratios were employed in order to propose probable sources for PACs. Although statistical analysis preliminarily has indicated both pyrogenic and petrogenic contributions, petrogenic sources were predominant reflecting the impacts of petroleum exploration and intensive traffic of boats in the study area.
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Affiliation(s)
- Maria Claudia R Sola
- Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente - INCT, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil
| | - Aldenor G Santos
- Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente - INCT, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, 40170-115, Salvador, BA, Brazil
| | - Sabrina T Martinez
- Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente - INCT, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil
| | - Madson M Nascimento
- Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, 40170-115, Salvador, BA, Brazil
| | - Gisele O da Rocha
- Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente - INCT, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil.,Instituto de Química, Universidade Federal da Bahia, Campus de Ondina, 40170-115, Salvador, BA, Brazil
| | - Jailson B de Andrade
- Instituto Nacional de Ciência e Tecnologia em Energia e Ambiente - INCT, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil. .,Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil. .,Centro Universitário SENAI-CIMATEC, 41650-110, Salvador, BA, Brazil.
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Pires A, Velez C, Figueira E, Soares AMVM, Freitas R. Effects of sediment contamination on physiological and biochemical responses of the polychaete Diopatra neapolitana, an exploited natural resource. MARINE POLLUTION BULLETIN 2017; 119:119-131. [PMID: 28351663 DOI: 10.1016/j.marpolbul.2017.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 03/05/2017] [Accepted: 03/07/2017] [Indexed: 06/06/2023]
Abstract
The present study reports metal and arsenic contamination in sediments, as well as element accumulation and partitioning in the polychaete Diopatra neapolitana in the Ria de Aveiro lagoon (Portugal). The polychaetes biochemical performance and tissue regenerative capacity were also evaluated. The concentration of elements in sediments showed an increase of contamination among areas (areas A-G), but higher bioaccumulation was observed in organisms from a less contaminated area (area C, BAF>1). This study evidenced that individuals with higher elements bioaccumulation presented higher LPO and lower GSH/GSSG and also exhibited lower capacity for body regeneration. Polychaetes biotransformation capacity as well as antioxidant defense mechanisms were not sufficiently efficient to withstand the excess of ROS leading to increased LPO when organisms presented higher bioaccumulation levels. Additionally, an increase of methalotionines was also observed in individuals with higher bioaccumulation of metals and As, suggesting an induction of detoxification processes.
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Affiliation(s)
- Adília Pires
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal.
| | - Cátia Velez
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Etelvina Figueira
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | | | - Rosa Freitas
- Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
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Palanques A, Lopez L, Guillén J, Puig P, Masqué P. Decline of trace metal pollution in the bottom sediments of the Barcelona City continental shelf (NW Mediterranean). THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 579:755-767. [PMID: 27887822 DOI: 10.1016/j.scitotenv.2016.11.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/04/2016] [Accepted: 11/05/2016] [Indexed: 06/06/2023]
Abstract
The evolution of trace metal pollution on the Barcelona city continental shelf during the last few decades was studied by analyzing the historical records of trace metals in sediment cores and surface sediment samples taken at the same locations in 1987 and in 2008. Polluted surface samples taken in 1987 reached enrichment factors of up to 490 for Hg, about 40 for Pb and Cd, and about 17 for Zn, Cr and Cu. The data show a decline of up to one order of magnitude in the trace metal content of surface sediments during the last few decades, with maximum enrichment factors of between 20 and 30 for Hg and Cd and between 5 and 12 for Zn, Cr, Pb and Cu. Although present-day pollution is still significant, it is evident that environmental regulations that are in place, including the operation since 1979 of wastewater treatment plants built in the Besòs River watershed, have drastically reduced the pollution levels in this highly populated and industrialized Mediterranean area. However, water discharge during heavy rain events exceeds the treatment capacity of the existing facilities, leading to the maintenance of still high levels of metals in sediments of the Barcelona city shelf.
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Affiliation(s)
- Albert Palanques
- Institute of Marine Sciences (CSIC), Passeig Maritim de la Barceloneta, 37-49, Barcelona 08003, Spain.
| | - Laura Lopez
- Institute of Marine Sciences (CSIC), Passeig Maritim de la Barceloneta, 37-49, Barcelona 08003, Spain
| | - Jorge Guillén
- Institute of Marine Sciences (CSIC), Passeig Maritim de la Barceloneta, 37-49, Barcelona 08003, Spain
| | - Pere Puig
- Institute of Marine Sciences (CSIC), Passeig Maritim de la Barceloneta, 37-49, Barcelona 08003, Spain
| | - Pere Masqué
- Departament de Física and Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain; School of Science, Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, WA 6027, Australia; The University of Western Australia Oceans Institute, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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Zhao H, Li W, Zhao X, Li X, Yang D, Ren H, Zhou Y. Cu/Zn superoxide dismutase (SOD) and catalase (CAT) response to crude oil exposure in the polychaete Perinereis aibuhitensis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:616-627. [PMID: 27743327 DOI: 10.1007/s11356-016-7594-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 09/04/2016] [Indexed: 06/06/2023]
Abstract
Cu/Zn superoxide dismutase (SOD) and catalase (CAT) cDNAs from the polychaete Perinereis aibuhitensis were cloned and characterized in order to investigate the relationship between crude oil exposure and stress response in this worm. The full length of PaSOD was 870 bp and PaCAT was 1967 bp encoding 150 and 506 amino acids, respectively. Gene expression and enzyme activity of Cu/Zn SOD and CAT in response to crude oil contaminated soil (500, 1500, and 3000 mg/kg) were measured. The results showed that expression of the CAT gene and enzyme activity in P. aibuhitensis was positively correlated to the concentration of crude oil and reached a maximum at 15 days of exposure to 3000 mg/kg crude oil. The expression of the SOD gene and enzyme activity of SOD in P. aibuhitensis also increased during exposure to crude oil and reached a maximum at 10 days of exposure to 3000 mg/kg crude oil. These results indicated that SOD and CAT are important for maintaining the balance of cellular metabolism and protecting P. aibuhitensis from crude oil toxicity.
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Affiliation(s)
- Huan Zhao
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China
| | - Wanjuan Li
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China
| | - Xinda Zhao
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China
| | - Xu Li
- Dalian Productivity Promotion Center, Dalian Ocean University, Dalian, 116025, People's Republic of China
| | - Dazuo Yang
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China
| | - Hongwei Ren
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China
| | - Yibing Zhou
- Key Laboratory of Marine Bio-Resource Restoration and Habitat Reparation in Liaoning Province, Dalian Ocean University, No. 52, HeiShiJiao Street, Dalian, 116023, Liaoning, People's Republic of China.
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Fonseca TG, Morais MB, Rocha T, Abessa DMS, Aureliano M, Bebianno MJ. Ecotoxicological assessment of the anticancer drug cisplatin in the polychaete Nereis diversicolor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:162-172. [PMID: 27744150 DOI: 10.1016/j.scitotenv.2016.09.185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/22/2016] [Accepted: 09/22/2016] [Indexed: 02/07/2023]
Abstract
Anticancer drugs are designed to inhibit tumor cell proliferation by interacting with DNA and altering cellular growth factors. When released into the waterbodies of municipal and hospital effluents these pharmaceutical compounds may pose a risk to non-target aquatic organisms, due to their mode of action (cytotoxic, genotoxic, mutagenic and teratogenic). The present study aimed to assess the ecotoxicological potential of the alkylating agent cisplatin (CisPt) to the polychaete Nereis diversicolor, at a range of relevant environmental concentrations (i.e. 0.1, 10 and 100ngPtL-1). Behavioural impairment (burrowing kinetic impairment), ion pump effects (SR Ca2+-ATPase), neurotoxicity (AChE activity), oxidative stress (SOD, CAT and GPXs activities), metal exposure (metallothionein-like proteins - MTLP), biotransformation (GST), oxidative damage (LPO) and genotoxicity (DNA damage), were selected as endpoints to evaluate the sublethal responses of the ragworms after 14-days of exposure in a water-sediment system. Significant burrowing impairment occurred in worms exposed to the highest CisPt concentration (100ngPtL-1) along with neurotoxic effects. The activity of antioxidant enzymes (SOD, CAT) and second phase biotransformation enzyme (GST) was inhibited but such effects were compensated by MTLP induction. Furthermore, LPO levels also increased. Results showed that the mode of action of cisplatin may pose a risk to this aquatic species even at the range of ngL-1.
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Affiliation(s)
- T G Fonseca
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal; NEPEA, Núcleo de Estudos em Poluição e Ecotoxicologia. Aquática, São Paulo State University - UNESP, Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique, s/n, 11330-900, São Vicente, SP, Brazil
| | - M B Morais
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal
| | - T Rocha
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal
| | - D M S Abessa
- NEPEA, Núcleo de Estudos em Poluição e Ecotoxicologia. Aquática, São Paulo State University - UNESP, Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique, s/n, 11330-900, São Vicente, SP, Brazil
| | - M Aureliano
- CCMar, Centre of Marine Sciences, University of Algarve, Campus de Gambelas, 8005-135 Faro, Portugal
| | - M J Bebianno
- CIMA, Centre for Marine and Environmental Research, University of Algarve, Campus Gambelas, 8005-135 Faro, Portugal.
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Araújo CVM, Martinez-Haro M, Pais-Costa AJ, Marques JC, Ribeiro R. Patchy sediment contamination scenario and the habitat selection by an estuarine mudsnail. ECOTOXICOLOGY (LONDON, ENGLAND) 2016; 25:412-418. [PMID: 26680766 DOI: 10.1007/s10646-015-1599-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/09/2015] [Indexed: 06/05/2023]
Abstract
Since mudsnails are able to avoid contaminated sediment and that the contaminants in sediment are not uniformly distributed, the mudsnail Peringia ulvae was exposed to cadmium (Cd) spiked sediment and assessed for avoidance response in a heterogeneous contamination scenario. Four Cd concentrations were prepared and disposed in patches on dishes, which were divided in 25 fields (six fields for each sediment concentration); 24 organisms were deployed in the central field, with no sediment. Observations were made at 2, 4 and 6 h (corresponding to immediate response), 8, 10 and 12 h (very short term), and 24 h (short term). A trend to avoid contaminated patches was observed in the immediate and very short term. After 24 h exposure, the organisms exposed to the highest level of contamination seemed to have lost the ability to move and avoid contaminated patches. In a contamination scenario in which non- and contaminated sediment patches are heterogeneously distributed, local mudsnail populations can simply rearrange their locality without needing to move to a different habitat. Such less contaminated patches can become donor areas in a future recolonization scenario.
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Affiliation(s)
- Cristiano V M Araújo
- Centre for Functional Ecology (CFE), Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal.
- Central Department of Research (DCI), Ecuadorian Aquatic Ecotoxicology (ECUACTOX) Group, Universidad Laica Eloy Alfaro de Manabí (ULEAM), Ciudadela Universitaria, vía San Mateo, Manta, Ecuador.
| | - Mónica Martinez-Haro
- MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3001-401, Coimbra, Portugal
| | - Antónia J Pais-Costa
- MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3001-401, Coimbra, Portugal
| | - João C Marques
- MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3001-401, Coimbra, Portugal
| | - Rui Ribeiro
- Centre for Functional Ecology (CFE), Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
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Freitas R, Coelho D, Pires A, Soares AMVM, Figueira E, Nunes B. Preliminary evaluation of Diopatra neapolitana regenerative capacity as a biomarker for paracetamol exposure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:13382-13392. [PMID: 25940485 DOI: 10.1007/s11356-015-4589-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 04/22/2015] [Indexed: 06/04/2023]
Abstract
An increasing number of studies established unequivocal relationships between exposure to pharmaceutical drugs and toxicity in wildlife. However, few studies investigated physiological alterations caused by such compounds in polychaetes. Thus, in this study, the effects of increasing concentrations of paracetamol were studied in the polychaete Diopatra neapolitana using tissue regenerative capacity as a biomarker. The obtained results revealed that individuals exposed to ecologically relevant concentrations (namely, 25 μg/L) of paracetamol exhibited significantly lower capacity to regenerate their body in comparison with control organisms. This study evidenced that paracetamol can induce significant physiological alterations in D. neapolitana resulting in an overall diminished regenerative capacity, which is of significance to a species with high ecological and economic relevance. Additionally, this study indicates the promise of D. neapolitana as a test organism in laboratory-based bioassays, but also as an adequate sentinel species to pharmaceutical drugs.
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Affiliation(s)
- Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal,
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Pires A, Figueira E, Moreira A, Soares AMVM, Freitas R. The effects of water acidification, temperature and salinity on the regenerative capacity of the polychaete Diopatra neapolitana. MARINE ENVIRONMENTAL RESEARCH 2015; 106:30-41. [PMID: 25756899 DOI: 10.1016/j.marenvres.2015.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/26/2015] [Accepted: 03/01/2015] [Indexed: 06/04/2023]
Abstract
Changes in seawater pH, temperature and salinity are expected to occur in the near future, which can be a threat to aquatic systems, mainly for marine coastal areas, and their inhabiting species. Hence, the present study proposes to evaluate the effects of temperature shifts, pH decrease and salinity changes in the tissue's regenerative capacity of the polychaete Diopatra neapolitana. This study evidenced that D. neapolitana individuals exposed to lower pH exhibited a significantly lower capacity to regenerate their body, while with the increase of temperature individuals showed a higher capacity to regenerate their tissues. Furthermore, the present work demonstrated that individuals exposed to salinities 28 and 35 did not present significant differences between them, while salinities 21 and 42 negatively influenced the regenerative capacity of D. neapolitana. At the end of regeneration, comparing all conditions, high salinity (42) seemed to have a greater impact on the regenerative capacity of individuals than the other factors, since under this condition individuals took longer to completely regenerate. Overall, this study demonstrated that variations in abiotic factors can strongly affect D. neapolitana's performance.
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Affiliation(s)
- Adília Pires
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
| | - Etelvina Figueira
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Anthony Moreira
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Amadeu M V M Soares
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal
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10
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Gomes IDL, Lemos MFL, Soares AMVM, Barata C, Faria M. The use of cholinesterase as potential biomarker: In vitro characterization in the polychaete Capitella teleta. MARINE POLLUTION BULLETIN 2014; 85:179-185. [PMID: 24954565 DOI: 10.1016/j.marpolbul.2014.05.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/14/2014] [Accepted: 05/19/2014] [Indexed: 06/03/2023]
Abstract
The ecological relevance of polychaetes coupled with their easy culture and maintenance in the laboratory, has led them to become increasingly used in marine ecotoxicological studies, raising the need to validate frequently applied monitoring tools at various biological levels. The present study was aimed to characterize the cholinesterases (ChE) activity in the polychaete Capitella teleta, using three substrates (acetylthiocholine iodide, propionylthiocholine iodide, and S-butyrylthiocholine iodide) and four known inhibitors (eserine hemisulfate, BW284c51, iso-OMPA and chlorpyrifos-oxon). Results showed that most of the measured cholinesterase activity was acetylcholinesterase (AChE). Inhibition of enzyme kinetic experiments denoted that sensitivity of C. teleta's ChE to the organophosphorous metabolite chlorpyrifos-oxon (IC₅₀=60.72 nM) was analogous to some fish species. This study highlights the relevance of ChE characterization before its use as a biomarker in ecotoxicology and biomonitoring studies.
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Affiliation(s)
- Isa D L Gomes
- Environmental Chemistry Department, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain; Marine Resources Research Group, ESTM & GIRM, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal
| | - Marco F L Lemos
- Marine Resources Research Group, ESTM & GIRM, Polytechnic Institute of Leiria, 2520-641 Peniche, Portugal
| | | | - Carlos Barata
- Environmental Chemistry Department, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Melissa Faria
- CESAM & Dept. Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
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