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Rotolo F, Vitiello V, Souissi S, Carotenuto Y, Buttino I. Physiological and molecular responses of the copepods Acartia clausi and Acartia tonsa to nickel nanoparticles and nickel chloride. CHEMOSPHERE 2024; 360:142302. [PMID: 38763394 DOI: 10.1016/j.chemosphere.2024.142302] [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: 01/26/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/21/2024]
Abstract
Nickel compounds in dissolved form or as nanoparticles may affect planktonic invertebrates in marine ecosystems. Here, we assessed the physiological (naupliar mortality, egg production, egg hatching success) and molecular (quantitative gene expression) responses of the crustacean copepods Acartia clausi (indigenous Mediterranean species) and Acartia tonsa (model organism in ecotoxicology), to nickel nanoparticles (NiNPs) and nickel chloride (NiCl2), over time. We also measured NPs size and the temporal release of Ni ions in aqueous solution, through dynamic light scattering (DLS) and inductively coupled plasma-mass spectrometry (ICP-MS), respectively. Nauplii of A. clausi were highly vulnerable to NiCl2 in the 48 h acute test, with an EC50 in the range of Ni concentrations measured in polluted waters. Females of both species exhibited a decreased egg production and hatching success after the 4-day exposure to NiNPs. Molecular responses in A. clausi incubated in NiNPs and NiCl2 showed a stronger up- or down-regulation, compared to A. tonsa, of genes associated with detoxification (phospholipid-hydroperoxide glutathione peroxidase, glutathione-S-transferase sigma), oxidative stress (superoxide dismutase), nervous system functioning (acetylcholinesterase), and oogenesis (vitellogenin). In conclusion, new information was here obtained on the effects of different forms of nickel on physiological and molecular responses of A. clausi, that could help to identify biomarker genes of exposure to be used as early-warning indicators. Our results also highlighted the need of employing indigenous copepod species to better evaluate the ecotoxicological impact of pollutants in different geographical area.
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Affiliation(s)
- Flavio Rotolo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy; Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy
| | - Valentina Vitiello
- Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy
| | - Sami Souissi
- Université de Lille, CNRS, Univ. Littoral Côte d'Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, 62930, Wimereux, France; Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung, 20224, Taiwan; Operation Center for Enterprise Academia Networking, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - Ylenia Carotenuto
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy.
| | - Isabella Buttino
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy; Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy
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Rotolo F, Vitiello V, Pellegrini D, Carotenuto Y, Buttino I. Historical control data in ecotoxicology: Eight years of tests with the copepod Acartia tonsa. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 284:117468. [PMID: 34062440 DOI: 10.1016/j.envpol.2021.117468] [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: 03/25/2021] [Revised: 05/10/2021] [Accepted: 05/24/2021] [Indexed: 06/12/2023]
Abstract
The calanoid copepod Acartia tonsa is one of the most frequently used organisms in acute, short-term bioassays to assess effects induced by marine matrices or chemicals on different life stages. Physiological responses in such tests can be highly variable and historical control data (HCD), values recorded from previous studies performed under similar conditions, can be useful to recognise the average responses over time. Here, we analysed egg hatching success and larval (naupliar) immobilisation/mortality of A. tonsa Mediterranean strain, cultured in laboratory conditions since 2008 and used as model organisms in ecotoxicology tests. Our aims were to evaluate the physiological response and sensitivity of A. tonsa over eight years of bioassays, and to compare our HCD with reference values, in order to assess the suitability of such a long-term culture for ecotoxicology studies. Acartia tonsa eggs were exposed for 48 h to the reference toxicant nickel chloride (NiCl2) and the % of egg hatching success and naupliar viability were compared to controls. A total of 59 acute tests, displayed in Shewhart-like control charts, showed a high mean percentage of egg hatching success (85.60% ± 5.90 SD) recorded for the whole period, and a low mean percentage of naupliar immobilisation/mortality (6.73% ± 6.38 SD) in controls. Effective concentration (EC50) for NiCl2 registered a stable mean of 0.14 mg Ni/L (± 0.047 SD) over time. Overall, our long-term dataset confirms the suitability of this copepod species for ecotoxicology studies even after years of culturing in laboratory conditions. It is advisable that other laboratories with long-term datasets made their own control charts, to allow data comparison and to improve test protocols. Considering our HCD, we suggest an EC50 of NiCl2 of 0.14 ± 0.09 mg Ni/L for acute tests with the Mediterranean strain of A. tonsa.
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Affiliation(s)
- Flavio Rotolo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy
| | - Valentina Vitiello
- Italian Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy
| | - David Pellegrini
- Italian Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy
| | - Ylenia Carotenuto
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy
| | - Isabella Buttino
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy; Italian Institute for Environmental Protection and Research, ISPRA, Via del Cedro, 38, 57123, Livorno, Italy.
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Carotenuto Y, Vitiello V, Gallo A, Libralato G, Trifuoggi M, Toscanesi M, Lofrano G, Esposito F, Buttino I. Assessment of the relative sensitivity of the copepods Acartia tonsa and Acartia clausi exposed to sediment-derived elutriates from the Bagnoli-Coroglio industrial area. MARINE ENVIRONMENTAL RESEARCH 2020; 155:104878. [PMID: 31975692 DOI: 10.1016/j.marenvres.2020.104878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 06/10/2023]
Abstract
The sensitivity of the copepods Acartia tonsa, commonly used in standardized tests for environmental risk assessment and A. clausi, the dominant autochthonous congener species in the Mediterranean Sea, was assessed using sediment-derived elutriates from the industrial area of Bagnoli-Coroglio and nickel chloride as referent toxicant. Acute A. clausi naupliar immobilization test showed EC50 for elutriates E25, E56 and E84 of 23.3%, 80.5% and >100%, respectively, compared to 59.5%, 66.6% and >100% in A. tonsa. In the 7 day sublethal test, a reduction in A. clausi egg production rates was observed in all elutriates, but only in E56 for A. tonsa. Elutriate 56, which contained the highest amount of polycyclic aromatic hydrocarbons, also induced 70% mortality in A. clausi females. Although A. clausi was more sensitive than A. tonsa, the two species had convergent responses to the three elutriates, thus opening the venue for a potential use of A. clausi in standardized ecotoxicity tests.
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Affiliation(s)
- Ylenia Carotenuto
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Napoli, Italy.
| | - Valentina Vitiello
- Istituto Superiore per la Protezione e Ricerca Ambientale, via del cedro 38, 57122, Livorno, Italy
| | - Alessandra Gallo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Napoli, Italy
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - Marco Trifuoggi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - Maria Toscanesi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - Giusy Lofrano
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - Francesco Esposito
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Napoli, Italy
| | - Isabella Buttino
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale 1, 80121, Napoli, Italy; Istituto Superiore per la Protezione e Ricerca Ambientale, via del cedro 38, 57122, Livorno, Italy.
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Zhou C, Carotenuto Y, Vitiello V, Wu C, Zhang J, Buttino I. De novo transcriptome assembly and differential gene expression analysis of the calanoid copepod Acartia tonsa exposed to nickel nanoparticles. CHEMOSPHERE 2018; 209:163-172. [PMID: 29929122 DOI: 10.1016/j.chemosphere.2018.06.096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
The calanoid copepod Acartia tonsa is a reference species in standardized ecotoxicology bioassay. Despite this interest, there is a lack of knowledge on molecular responses of A. tonsa to contaminants. We generated a de novo assembled transcriptome of A. tonsa exposed 4 days to 8.5 and 17 mg/L nickel nanoparticles (NiNPs), which have been shown to reduce egg hatching success and larval survival but had no effects on the adults. Aims of our study were to 1) improve the knowledge on the molecular responses of A. tonsa copepod and 2) increase the genomic resources of this copepod for further identification of potential biomarkers of NP exposure. The de novo assembled transcriptome of A. tonsa consisted of 53,619 unigenes, which were further annotated to nr, GO, KOG and KEGG databases. In particular, most unigenes were assigned to Metabolic and Cellular processes (34-45%) GO terms, and to Human disease (28%) and Organismal systems (23%) KEGG categories. Comparison among treatments showed that 373 unigenes were differentially expressed in A. tonsa exposed to NiNPs at 8.5 and 17 mg/L, with respect to control. Most of these genes were downregulated and took part in ribosome biogenesis, translation and protein turnover, thus suggesting that NiNPs could affect the copepod ribosome synthesis machinery and functioning. Overall, our study highlights the potential of toxicogenomic approach in gaining more mechanistic and functional information about the mode of action of emerging compounds on marine organisms, for biomarker discovering in crustaceans.
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Affiliation(s)
- Chao Zhou
- National Engineering Research Center of Marine Facilities Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Changzhi Island, Zhoushan, Zhejiang 316022, PR China
| | - Ylenia Carotenuto
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale, Napoli, Italy
| | - Valentina Vitiello
- Istituto Superiore per La Protezione e Ricerca Ambientale ISPRA, Via del cedro 38, 57122, Livorno, Italy
| | - Changwen Wu
- National Engineering Research Center of Marine Facilities Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Changzhi Island, Zhoushan, Zhejiang 316022, PR China
| | - Jianshe Zhang
- National Engineering Research Center of Marine Facilities Aquaculture, College of Marine Science and Technology, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Changzhi Island, Zhoushan, Zhejiang 316022, PR China
| | - Isabella Buttino
- Stazione Zoologica Anton Dohrn, Department of Integrative Marine Ecology, Villa Comunale, Napoli, Italy; Istituto Superiore per La Protezione e Ricerca Ambientale ISPRA, Via del cedro 38, 57122, Livorno, Italy.
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Nilsson B, Hansen BW. Timing of embryonic quiescence determines viability of embryos from the calanoid copepod, Acartia tonsa (Dana). PLoS One 2018. [PMID: 29513715 PMCID: PMC5841787 DOI: 10.1371/journal.pone.0193727] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Like 41 other calanoid copepods, Acartia tonsa, are capable of inducing embryonic quiescence when experiencing unfavorable environmental conditions. The ecdysone-signaling cascade is known to have a key function in developmental processes like embryogenesis and molting of arthropods, including copepods. We examined the role of ecdysteroid-phosphate phosphatase (EPPase), ecdysone receptor (EcR), ß fushi tarazu transcription factor 1 (ßFTZ-F1), and the ecdysteroid-regulated early gene E74 (E74), which represent different levels of the ecdysone-signaling cascade in our calanoid model organism. Progression of embryogenesis was monitored and hatching success determined to evaluate viability. Embryos that were induced quiescence before the gastrulation stage would stay in gastrulation during the rest of quiescence and exhibited a slower pace of hatching as compared to subitaneous embryos. In contrast, embryos developed further than gastrulation would stay in gastrulation or later stages during quiescence and showed a rapid pace in hatching after quiescence termination. Expression patterns suggested two peaks of the biological active ecdysteroids, 20-hydroxyecdysone (20E). The first peak of 20E was expressed in concert with the beginning of embryogenesis originating from yolk-conjugated ecdysteroids, based on EPPase expression. The second peak is suggested to originate from de novo synthesized 20E around the limb bud stage. During quiescence, the expression patterns of EPPase, EcR, ßFTZ-F1, and E74 were either decreasing or not changing over time. This suggests that the ecdysone-signaling pathway play a key role in the subitaneous development of A. tonsa embryogenesis, but not during quiescence. The observation is of profound ecological and practical relevance for the dynamics of egg banks.
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Affiliation(s)
- Birgitte Nilsson
- Department of Science and Environment, Roskilde University. Universitetsvej 1, Roskilde, Denmark
- * E-mail:
| | - Benni Winding Hansen
- Department of Science and Environment, Roskilde University. Universitetsvej 1, Roskilde, Denmark
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Buttino I, Vitiello V, Macchia S, Scuderi A, Pellegrini D. Larval development ratio test with the calanoid copepod Acartia tonsa as a new bioassay to assess marine sediment quality. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 149:1-9. [PMID: 29145160 DOI: 10.1016/j.ecoenv.2017.10.062] [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: 04/05/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
The copepod Acartia tonsa was used as a model species to assess marine sediment quality. Acute and chronic bioassays, such as larval development ratio (LDR) and different end-points were evaluated. As a pelagic species, A. tonsa is mainly exposed to water-soluble toxicants and bioassays are commonly performed in seawater. However, an interaction among A. tonsa eggs and the first larval stages with marine sediments might occur in shallow water environments. Here we tested two different LDR protocols by incubating A. tonsa eggs in elutriates and sediments coming from two areas located in Tuscany Region (Central Italy): Livorno harbour and Viareggio coast. The end-points analyzed were larval mortality (LM) and development inhibition (DI) expressed as the percentage of copepods that completed the metamorphosis from nauplius to copepodite. Aims of this study were: i) to verify the suitability of A. tonsa copepod for the bioassay with sediment and ii) to compare the sensitivity of A. tonsa exposed to different matrices, such as water and sediment. A preliminary acute test was also performed. Acute tests showed the highest toxicity of Livorno's samples (two out of three) compared to Viareggio samples, for which no effect was observed. On the contrary, LDR tests with sediments and elutriates revealed some toxic effects also for Viareggio's samples. Results were discussed with regards to the chemical characterization of the samples. Our results indicated that different end-points were affected in A. tonsa, depending on the matrices to which the copepods were exposed and on the test used. Bioassays with elutriates and sediments are suggested and LDR test could help decision-makers to identify a more appropriate management of dredging materials.
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