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Registros recuperados: 7
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Behavioural study of two Hydrothermal crustacean decapods: Mirocaris fortunata and Segonzacia mesatlantica, from the lucky strike vent field (mid-Atlantic ridge) ArchiMer
Matabos, Marjolaine; Cuvelier, D.; Brouard, J.; Shillito, B.; Ravaux, J.; Zbinden, M.; Barthelemy, D.; Sarradin, Pierre-marie; Sarrazin, Jozee.
Identifying the factors driving community dynamics in hydrothermal vent communities, and in particular biological interactions, is challenged by our ability to make direct observations and the difficulty to conduct experiments in those remote ecosystems. As a result, we have very limited knowledge on species’ behaviour and interactions in these communities and how they in turn influence community dynamics. Interactions such as competition or predation significantly affect community structure in vent communities, and video time-series have successfully been used to gain insights in biological interactions and species behaviour, including responses to short-term changes in temperature or feeding strategies. In this study, we combined in situ and ex situ...
Tipo: Text Palavras-chave: Abyss Box; Biological interactions; Deep-sea observatory; Eiffel Tower edifice; Feeding behaviour; Experimental research; Video imagery; Time series; Lucky Strike; Mid-Atlantic Ridge; 37 degrees 17 ' N; 32 degrees 16.3 ' W.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00266/37714/35732.pdf
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Comparison of heat-shock responses between the hydrothermal vent shrimp Rimicaris exoculata and the related coastal shrimp Palaemonetes varians Inra
Cottin, D.; Shillito, B.; Chertemps, T.; Thatje, S.; Léger, N.; Ravaux, J..
The deep-sea vent shrimp Rimicaris exoculata is believed to occur at the hot end of the hydrothermal biotope in order to provide essential elements to its epibiosis. Because it is found close to hot ventingwater, R. exoculata lives in a highly fluctuating environment where temperature (2–40 °C in the swarms) can exceed its critical maximal temperature (33–38.5±2 °C). In order to understand how this vent shrimp copes with hyperthermia, we compared itsmolecular heat stress response following an acute but non-lethal heat-shock (1 h at 30 °C)with that of its monophyletic shallow-water relative, the shrimp Palaemonetes varians, known to frequently undergo prolonged exposure at temperatures up to 30 °C in its natural environment during summer. We isolated four...
Tipo: Journal Article Palavras-chave: EAU PEU PROFONDE; CHOC THERMIQUE; HYPERTHERMIE HEAT STRESS; HSP70; HYDROTHERMAL VENTS; REAL-TIME PCR; SHALLOW-WATER; SHRIMP.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20117c70db10&uri=/notices/prodinra1/2011/05/
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Cruise MoMARDREAM-Naut and other MoMAR experiments at Rainbow and Lucky Strike in Summer 2007 ArchiMer
Gaill, Françoise; Ballu, V.; Cannat, M.; Crawford, W.; Dyment, J.; Escartin, J.; Fouquet, Yves; Goslin, J.; Reverdin, G.; Sarradin, Pierre-marie; Tarits, P.; Andreani, M.; Bonnivard, E.; Bucas, Karenn; Burgaud, G.; Cambon-bonavita, Marie-anne; Cueff, Valerie; Durand, C.; Gros, O.; Hamel, G.; Henriques, M.; Hois, E.; Ildefonse, B.; Konn, Cecile; Le Bris, Nadine; Le Guyader, H.; Ravaux, J.; Shilito, B.; Toullec, J.y.; Zbinden, M..
Tipo: Text
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00385/49650/50163.pdf
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Development of an ecotoxicological protocol for the deep-sea fauna using the hydrothermal vent shrimp Rimicaris exoculata ArchiMer
Auguste, M.; Mestre, N. C.; Rocha, T. L.; Cardoso, C.; Cueff-gauchard, Valerie; Le Bloa, Simon; Cambon-bonavita, Marie-anne; Shillito, B.; Zbinden, M.; Ravaux, J.; Bebianno, M. J..
In light of deep-sea mining industry development, particularly interested in massive-sulphide deposits enriched in metals with high commercial value, efforts are increasing to better understand potential environmental impacts to local fauna. The aim of this study was to assess the natural background levels of biomarkers in the hydrothermal vent shrimp Rimicaris exoculata and their responses to copper exposure at in situ pressure (30 MPa) as well as the effects of depressurization and pressurization of the high-pressure aquarium IPOCAMP. R. exoculata were collected from the chimney walls of the hydrothermal vent site TAG (Mid Atlantic Ridge) at 3630 m depth during the BICOSE cruise in 2014. Tissue metal accumulation was quantified in different tissues...
Tipo: Text Palavras-chave: Deep-sea mining; Hydrothermal vents; Biomarkers; Ipocamp; Copper; TAG.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00323/43465/42869.pdf
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Effects of cold-exposure and subsequent recovery on cellular proliferation with influence of 20-hydroxyecdysone in a lepidopteran cell line (IAL-PID2) Inra
Lalouette, L.; Renault, D.; Ravaux, J.; Siaussat, D..
In developing insects, the peak level of 20-hydroxyecdysone (20E) initiates a decrease in cyclin expression, which subsequently triggers an arrest of cellular proliferation and the start of differentiation, finally culminating in the moult. We investigated the impact of cold-exposure (4 degrees C) and recovery (26 degrees C) on the cell cycle activity of the Plodia interpunctella Lepidoptera cell line IAL-PID2 and on the expression of B-type cyclin (PcycB), ecdysone receptor (B1-isoform; PiEcR-B1), and Hsc70 (PiHsc70) mRNA. Cold-exposure significantly reduced expression of these mRNAs, while their levels increased to above control values during subsequent recovery at the normal growth temperature. When cold-exposed cells were returned to 26 degrees C, cell...
Tipo: Journal Article Palavras-chave: FROID; DEVELOPPEMENT CELLULAIRE; EFFET DE LA TEMPERATURE; LEPIDOPTERA; RECEPTEUR; EXPRESSION DES GENES; ARN MESSAGER; PROTEINE; HORMONE STEROIDE; PLODIA INTERPUNCTELLA; CARTOGRAPHIE; ELECTROPHORESE; MITE; PYRALIDAE PROLIFERATION; 20-HYDROXYECDYSONE; IAL-PID2 CELLS; STEROID HORMONE RECEPTOR SUPERFAMILY; HEAT SHOCK PROTEINS 70; COLD SHOCK.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010eed35965&uri=/notices/prodinra1/2010/09/
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Hydrothermal vent shrimps display low expression of the heat-inducible hsp70 gene in nature Inra
Ravaux, J.; Cottin, D.; Chertemps, T.; Hamel, G.; Shillito, B..
The shrimp Rimicaris exoculata swarms over high-temperature chimneys at Mid-Atlantic Ridge hydrothermal sites, thriving in a mixture of hot vent fluid (350°C) and cold seawater (2°C). It may, therefore, be subjected to a thermal regime that is assumed to be stressful for animals. Evaluating the stress status of species in their natural environment is a key issue for understanding the thermal biology of metazoans. In the case of deep-sea species, attempts to quantify natural levels of stress proteins are obviously impaired by deleterious decompression effects during sampling. Here we quantified the heat shock protein (hsp70) mRNA expression of shrimps sampled at a depth of 2300 m and recovered at their native pressure. These shrimps were not...
Tipo: Journal Article Palavras-chave: ARTHROPODA; CRUSTACEA; MALACOSTRACA; ALVINOCARIDIDAE; PROTEINE; STRESS THERMIQUE; EFFET DE LA TEMPERATURE; EFFET DU FROID; ARN MESSAGER; TRANSCRIPTION; EXPRESSION DES GENES; PCR HYDROTHERMAL VENTS; RIMICARIS EXOCULATA; THERMAL BIOLOGY; THERMAL STRESS; HSP70; HEAT SHOCK PROTEIN.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20101482b1b3&uri=/notices/prodinra1/2010/11/
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Identification of differentially expressed genes in the hydrothermal vent shrimp Rimicaris exoculata exposed to heat stress Inra
Cottin, D.; Shillito, B.; Chertemps, T.; Tanguy, A.; Léger, N.; Ravaux, J..
The deep-sea vent shrimp Rimicaris exoculata dominates the vagile megafauna at most vent sites along the Mid-Atlantic Ridge. This shrimp swarms around the hot end of the hydrothermal biotope where temperature can exceed its critical maximal temperature (33–38.5 ± 2 °C). It may therefore be subjected to a thermal regime that is assumed to be stressful for animals. In this study, we used a global transcriptomic approach by constructing suppression subtractive hybridization cDNA libraries in order to identify specific up- and down-regulated genes in R. exoculata exposed to a severe heat stress (1 h at 30 °C). A total of 218 sequences representing potentially highly expressed genes in thermally stressed shrimp were obtained. Expression of 11 genes involved in...
Tipo: Journal Article Palavras-chave: ARTHROPODA; CRUSTACEA; MALACOSTRACA; ALVINOCARIDIDAE; EXPRESSION DES GENES; STRESS THERMIQUE; EFFET DE LA TEMPERATURE; CLONAGE MOLECULAIRE; ADNC; HYBRIDATION; REGULATION; TRANSCRIPTION; PROTEINE RIMICARIS EXOCULATA; HYDROTHERMAL VENT; HEAT STRESS; SUPPRESSION SUBTRACTIVE HYBRIDIZATION; REAL-TIME PCR.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010af1480fe&uri=/notices/prodinra1/2010/11/
Registros recuperados: 7
Primeira ... 1 ... Última
 

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