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| Registros recuperados: 55 | |
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| Borcier, Elodie; Artigaud, Sebastien; Gaillard, Jean-charles; Armengaud, Jean; Charrier, Gregory; Couteau, Jérôme; Receveur, Justine; Ouddane, Baghdad; Diop, Mamadou; Amara, Rachid; Laroche, Jean; Pichereau, Vianney. |
| Estuaries are important areas highly vulnerable to anthropogenic pollutions. Therefore, the assessment of estuarine water quality is a major ecological issue. In this study, we sampled juveniles of the European flounder in the “pristine” Canche estuary, and caged them in Canche and in two polluted sites of the Seine estuary, Rouen and Fosse Nord. After one month, the metal and organic pollutants in these sites were assessed, and we evaluated several phenotypic indicators (condition index, RNA/DNA ratios and genotoxicity), and extracted the proteins in fish livers for analysis using a shotgun proteomics approach. The results showed strong modifications in the fish caged in both sites of the Seine estuary, as compared to those caged in Canche. In particular,... |
| Tipo: Text |
Palavras-chave: Estuary water quality; Ecotoxicology; Caging; Suess; Fish physiology; Shotgun proteomics. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62067/66247.pdf |
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| Le Goic, Nelly; Hegaret, Helene; Boulais, Myrina; Beguel, Jean-philippe; Lambert, Christophe; Fabioux, Caroline; Soudant, Philippe. |
| The Pacific oyster Crassostrea gigas accounts for a large part of shellfish aquaculture production worldwide. Aspects of morphological and functional characteristics of oyster oocytes remain poorly documented, and traditional techniques, such as microscopic observations of shape or fertilization rate, are time and space consuming. The purpose of this study was to assess for the first time viability and reactive oxygen species (ROS) production of Pacific oyster oocytes using flow cytometry (FCM) and to apply this method to determine oocyte responses to in vitro exposure to the toxic dinoflagellate Alexandrium minutum. A culture of A. minutum caused a significant increase in oocyte ROS production, which gradually increased with the age of the culture, but... |
| Tipo: Text |
Palavras-chave: Pacific oyster; Gamete quality; ROS production; Viability; Flow cytometry; Ecotoxicology. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00216/32760/31321.pdf |
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| Milinkovitch, Thomas; Geffard, Olivier; Geffard, Alain; Mouneyrac, Catherine; Chaumot, Arnaud; Xuereb, Benoit; Fisson, Cedric; Minier, Christophe; Auffret, Michel; Perceval, Olivier; Egea, Emilie; Sanchez, Wilfried. |
| The Water Framework Directive (WFD) currently supports chemical and ecological monitoring programmes in order to achieve the good water surface status. Although chemical and ecological assessments are necessary, they have some limitations. Chemical approaches focus on certain substances identified as priorities, but they do not take into account other potentially harmful substances and also ignore the hazards related to contaminant cocktails. On the other hand, while ecological approaches provide holistic information on the impairment of biological communities in ecosystems, they do not distinguish the role of contaminants in these alterations, and consequently do not allow the establishment of contaminant impact reduction plans. Consequently,... |
| Tipo: Text |
Palavras-chave: Biomarkers; Ecotoxicology; Water Framework Directive; Biomonitoring strategy; Contaminants. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00605/71662/73085.pdf |
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| Destoumieux-garzon, Delphine; Mavingui, Patrick; Boetsch, Gilles; Boissier, Jerome; Darriet, Frederic; Duboz, Priscilla; Fritsch, Clementine; Giraudoux, Patrick; Le Roux, Frederique; Morand, Serge; Paillard, Christine; Pontier, Dominique; Sueur, Cedric; Voituron, Yann. |
| Over the past decade, a significant increase in the circulation of infectious agents was observed. With the spread and emergence of epizootics, zoonoses, and epidemics, the risks of pandemics became more and more critical. Human and animal health has also been threatened by antimicrobial resistance, environmental pollution, and the development of multifactorial and chronic diseases. This highlighted the increasing globalization of health risks and the importance of the human–animal–ecosystem interface in the evolution and emergence of pathogens. A better knowledge of causes and consequences of certain human activities, lifestyles, and behaviors in ecosystems is crucial for a rigorous interpretation of disease dynamics and to drive public policies. As a... |
| Tipo: Text |
Palavras-chave: One health; EcoHealth; Infectious disease; Non-communicable disease; Multifactorial disease; Ecotoxicology; Interdisciplinary research; Public health. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00425/53676/54518.pdf |
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| Mestre, N.c.; Auguste, M.; De Sá, L.c.; Fonseca, T.g.; Cardoso, C.; Brown, A.; Barthelemy, D.; Charlemagne, N.; Hauton, C.; Machon, J.; Ravaux, J.; Shillito, B.; Thatje, S.; Bebianno, M.j.. |
| Polymetallic seafloor massive sulphide deposits are potential targets for deep-sea mining, but high concentrations of metals (including copper - Cu) may be released during exploitation activities, potentially inducing harmful impact. To determine whether shallow-water shrimp are suitable ecotoxicological proxies for deep-sea hydrothermal vent shrimp the effects of waterborne Cu exposure (3 and 10 days at 0.4 and 4 μM concentrations) in Palaemon elegans, Palaemon serratus, and Palaemon varians were compared with Mirocaris fortunata. Accumulation of Cu and a set of biomarkers were analysed. Results show different responses among congeneric species indicating that it is not appropriate to use shallow-water shrimps as ecotoxicological proxies for deep-water... |
| Tipo: Text |
Palavras-chave: Deep-sea mining; Ecotoxicology; Biomarkers; Mirocaris fortunata; Palaemon. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62070/83483.pdf |
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| Baudrimont, M.; Gonzalez, P.; Hegaret, H.; Khayati, Alice; Lassus, Patrick; Legeay, A.; De Montaudouin, Xavier; Raymond, N.; Soudant, P.; Tran, D.. |
| The originality of this project consists in the interdisciplinary approach gathering the impact of toxic phytoplankton blooms and metallic pollution on health (behaviour, stress, immunity, genetic) and disease development of the Manila clam, an economieally important species. The Manila clam Ruditapes philippinarum is the second exploited bivalve in the world. It was introduced in Arcachon bay during the 80's and is today exploited by professional fishermen (57 licences). A 50% decrease of the stock was observed during the last five years. Beyond fishing pressure, a PhD thesis identified several diseases as potential threats, like perkinsosis (=Dermo) and brown muscle disease (BMD). The project confirms the settlement of these pathologies with high... |
| Tipo: Text |
Palavras-chave: Palourde japonaise; Pathologie; Efflorescences toxiques; Interactions microbiennes; Écotoxicologie; Multistress; Manila clam; Pathology; Toxic blooms; Microbial interactions; Ecotoxicology; Multistress. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00156/26745/24825.pdf |
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| Carvalho, Raquel N.; Arukwe, Augustine; Ait-aissa, Selim; Bado-nilles, Anne; Balzamo, Stefania; Baun, Anders; Belkin, Shimshon; Blaha, Ludek; Brion, Francois; Conti, Daniela; Creusot, Nicolas; Essig, Yona; Ferrero, Valentina E. V.; Flander-putrle, Vesna; Furhacker, Maria; Grillari-voglauer, Regina; Hogstrand, Christer; Jonas, Adam; Kharlyngdoh, Joubert B.; Loos, Robert; Lundebye, Anne-katrine; Modig, Carina; Olsson, Per-erik; Pillai, Smitha; Polak, Natasa; Potalivo, Monica; Sanchez, Wilfried; Schifferli, Andrea; Schirmer, Kristin; Sforzini, Susanna; Sturzenbaum, Stephen R.; Softeland, Liv; Turk, Valentina; Viarengo, Aldo; Werner, Inge; Yagur-kroll, Sharon; Zounkova, Radka; Lettieri, Teresa. |
| The risk posed by complex chemical mixtures in the environment to wildlife and humans is increasingly debated, but has been rarely tested under environmentally relevant scenarios. To address this issue, two mixtures of 14 or 19 substances of concern (pesticides, pharmaceuticals, heavy metals, polyaromatic hydrocarbons, a surfactant, and a plasticizer), each present at its safety limit concentration imposed by the European legislation, were prepared and tested for their toxic effects. The effects of the mixtures were assessed in 35 bioassays, based on 11 organisms representing different trophic levels. A consortium of 16 laboratories was involved in performing the bioassays. The mixtures elicited quantifiable toxic effects on some of the test systems... |
| Tipo: Text |
Palavras-chave: Bioassays; Effects; Mixtures; Ecotoxicology; Biomarkers. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00499/61115/64667.pdf |
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| Beiras, Ricardo; His, Edouard. |
| The effects of Hg concentrations ranging from 0 (control) to 1024 µg 1-1 upon embryogenesis, survival and growth of Mytilus galloprovincialis mussel larvae were investigated . Embryogenesis was abnormal in 50 % of the individuals at 10µg 1-1. The 48 h LC50 for D-shaped, early umbonate, late umbonate and eyed larvae were 51, 164, 322 and 383 µg 1- 1 respectively. The LC50 was an allometric function of ash-free dry weight with exponent b = 0.60. Larval growth was significantly reduced alter 6 d exposure to 4 µg Hg 1-1 and alter 10 d exposure to 2 µg 1-1. No significant differences in lethal or sublethal sensitivity to Hg were found between M. galloprovincialis and previously studied Crassostrea gigas embryos and larvae. The implications of these findings for... |
| Tipo: Text |
Palavras-chave: Mercury; Mytilus galloprovincialis; Mussel; Larvae; Growth; Embryonic development; Bioassay; Ecotoxicology. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00037/14868/12192.pdf |
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| Laubier, Lucien; Le Moigne, Morgan; Flammarion, Patrick; Thybaud, Eric; Cossa, Daniel. |
| On December 11, 1999, Erika, an oil tanker flying the Maltese flag and loaded with 31 000 t of heavy fuel oil, was making its way from Dunkirk to Livorno when it encountered difficult weather conditions Southwest of the Brittany coast gale force winds 8 to 9 and 6 mwaves). On the morning of 12th December, the captain broadcast an SOS; his vessel was breaking in two, approximately 30 nautical miles to south of Penmarc'h Point (Fig. 1; Finistère, France). The fore section of the vessel sank during the night of the 12-13 December and the aft section was taken in tow on the morning December 13, but subsequently sank in the early afternoon. Both parts lay in 120 m of water and were located 10 km apart. Approximately, 19 000 t of heavy fuel oil were spilled into... |
| Tipo: Text |
Palavras-chave: Atlantique; France; Monitoring programme; Hydrocarbon; Erika; Marine pollution; Ecotoxicology; Ecology. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-1390.pdf |
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| Michel, Pierre. |
| Arsenic levels of in the marine environment are high in comparison with other contaminants. Over the past twenty years, a large number of arsenic organic compounds have been identified in the water, sediments and living species. This document constitutes a synthesis of current knowledge on arsenic sources, and contamination levels, on its biogeochemical cycle as well as its toxic effects on human and marine fauna. This paper highlights in particular the effects of phosynthesis on arsenic speciation and its distribution throughout the marine environment. Problems of toxicity in the case of certain phyto- and zooplankton species are identified. Bioaccumulation in seaweeds, molluscs and fishes is documented as well, with special attention to the species... |
| Tipo: Text |
Palavras-chave: Ecotoxicology; Contamination; Biogeochemistry; Arsenic; Ecotoxicologie; Contamination; Biogéochimie; Arsenic. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/1993/rapport-1448.pdf |
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| Beltran-Pedreros,Sandra; Zuanon,Jansen; Leite,Rosseval Galdino; Peleja,José Reinaldo Pacheco; Mendonça,Alessandra Barros; Forsberg,Bruce Rider. |
| Thirty-two species of commercially important fish from three trophic levels and nine trophic categories were sampled at a floodplain lake of the Solimões River (Lago Grande de Manacapuru). The fish were analyzed to determine their Hg level and the bioaccumulation, bioconcentration, and biomagnification of this element. The observed increase in mean concentration of mercury (49.6 ng.g-1 for omnivores, 418.3 ng.g-1 for piscivores, and 527.8 ng.g-1 for carnivores/necrophages) furnished evidence of biomagnification. Primary, secondary, and tertiary consumers presented biomagnification factors of 0.27, 0.33, and 0.47, respectively. Significant differences in the bioconcentration and concentration of total Hg occurred between the categories of the third trophic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomagnification; Ecotoxicology; Fish quality; Floodplain; Mercury contamination. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400022 |
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| Dive, D.; Persoone, G.. |
| A critical examination of the utility of protozoan bioassays in marine as well as in freshwater ecotoxicology implies the answer to three basic questions: why, how and when. Arguments in favor of tests with Protozoa are: protozoans combine all biological mechanisms and functions in one single cell; the physiology and biochemistry of several species has been studied extensively; the generation time of Protozoa is very short in comparison to Metazoa; large numbers of organisms can be produced in a small volume; induction of cryptobiotic stages is possible with some species; Protozoa play a significant role in aquatic ecosystems; test methodologies with very sensitive criteria can be worked out. The two basic approaches for bioassay are <i>in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecotoxicology; Test organisms; Protozoa. |
| Ano: 1984 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3264 |
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| PEREIRA,P.C.; BRUNETTI,I.A.; CASTRO,K.S.; CHIAROTTI,L.F.; SANTOS,B.E.; MORAES,J.C.; CRUZ,C.. |
| ABSTRACT: This study aimed to establish the mass cultivation of Wolffia brasiliensis under laboratory conditions, determine the sensitivity of reference substances (potassium dichromate, sodium chloride, and potassium chloride), and estimate the acute toxicity (LC50;7d) for the herbicide glyphosate, diquat, paraquat, imazapyr, 2,4-D, saflufenacil, imazamox, penoxsulam, metsulfuron-methyl, and atrazine. Three media were tested for culture establishment: Hoagland’s medium, 5.0 g L-1 NPK fertilizer (20-5-20), a mixture of Oxisol + organic substrate of decaying aquatic plant (2:1; v v-1). Sensitivity tests with reference substances and acute toxicity for herbicides were carried out after establishing the cultivation. The species W. brasiliensis presented an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macrophytes; Chemicals; Ecotoxicology; Reference substances; Pesticides. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100289 |
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| Richardi,Vinicius Sobrinho; Vicentini,Maiara; Rebechi,Débora; Fávaro,Luis Fernando; Navarro-Silva,Mário Antônio. |
| ABSTRACTChironomidae immature are used as bioindicators of sediment quality in aquatic ecosystems and ecotoxicological assays. Histological descriptions for this family are outdated and limited and there are no studies with Neotropical species. The aim of this study was to describe the tissue architecture of several organs of the larva of Chironomus sancticaroli. For the description of the histological pattern, the larvae were fixed in Duboscq solution for insects at 56 °C, followed by routine histologic processing, infiltration in paraffin, and the sections were stained with Hematoxylin–Eosin. After examining the slides, the tube digestive, salivary gland, excretory, nervous, endocrine, circulatory, and integumentary systems and fat body were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecotoxicology; Histological biomarker; Sediment. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000300240 |
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| Registros recuperados: 55 | |
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