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| Registros recuperados: 17 | |
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| Castanheira, Maria Filipa; Paramo, Sonia Martinez; Figueiredo, F.; Cerqueira, Marco; Millot, Sandie; Oliveira, Catarina C. V.; Martins, Catarina I. M.; Conceicao, Luis E. C.. |
| Individual differences in behaviour and physiological responses to stress are associated with evolutionary adaptive variation and thus raw material for evolution. In farmed animals, the interest in consistent trait associations, i.e. coping styles, has increased dramatically over the last years. However, one of limitations of the available knowledge, regarding the temporal consistency, is that it refers always to short-term consistency (usually few weeks). The present study used an escape response during a net restraining test, previously shown to be an indicative of coping styles in seabream, to investigate long-term consistency of coping styles both over time and during different life history stages. Results showed both short-term (14 days) consistency... |
| Tipo: Text |
Palavras-chave: Individual variation; Personality; Farm animals; Production; Sperm quality; Stress response. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00334/44485/44198.pdf |
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| Silveira,P.P.; Benetti,C. da Silva; Portella,A.K.; Diehl,L.A.; Molle,R. Dalle; Lucion,A.B.; Dalmaz,C.. |
| Neonatal handling induces several behavioral and neurochemical alterations in pups, including decreased responses to stress and reduced fear in new environments. However, there are few reports in the literature concerning the behavioral effects of this neonatal intervention on the dams during the postpartum period. Therefore, the aim of the current study was to determine if brief postpartum separation from pups has a persistent impact on the dam's stress response and behavior. Litters were divided into two neonatal groups: 1) non-handled and 2) handled [10 min/day, from postnatal day (PND) 1 to 10]. Weaning occurred at PND 21 when behavioral tasks started to be applied to the dams, including sweet food ingestion (PND 21), forced swimming test (PND 28), and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding behavior; Neonatal handling; Psychostimulants; Stress response; Dam behavior. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500426 |
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| Feng¹,RJ; Lu,LF; Yuan,KH; Cheng,P; Zhang,LL; Qi,JF; Ren,Y; Xu,XL; Zhang,XB; Zhou,LY; Zhang,YD. |
| A banana (Musa AAA, Cavendish subgroup cv. Brazil) cDNA encoding a putative rubredoxin-like protein (MaRd1) was obtained from total RNA isolated from cold-treated banana leaves using rapid amplification of cDNA ends (RACE) technique. MaRd1 cDNA contained 597 nucleotides encoding 198 amino acids in the open reading frame. MaRd1 protein showed 56% amino acid identity with that of Pyrococcus furiosus rubredoxin (P24297). A chloroplast transit peptide and a transmembrane region were detected at the N-terminus and the C-terminus, respectively, of the deduced amino acid sequence of MaRd1 gene. Southern blotting revealed the occurrence of at least two copies of MaRd1 in the banana genome. Real time quantitative RT-PCR analysis revealed that the expression of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rubredoxin; Expression; Banana; Stress response. |
| Ano: 2010 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000200008 |
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| Castanheira, Maria Filipa; Conceicao, Luis E. C.; Millot, Sandie; Rey, Sonia; Begout, Marie-laure; Damsgard, Borge; Kristiansen, Tore; Hoglund, Erik; Overli, Oyvind; Martins, Catarina I. M.. |
| Individual differences in physiological and behavioural responses to stressors are increasingly recognised as adaptive variation and thus raw material for evolution and fish farming improvements including selective breeding. Such individual variation has been evolutionarily conserved and is present in all vertebrate taxa including fish. In farmed animals, the interest in consistent trait associations, that is coping styles, has increased dramatically over the last years because many studies have demonstrated links to performance traits, health and disease susceptibility and welfare. This study will review (i) the main behavioural, neuroendocrine, cognitive and emotional differences between reactive and proactive coping styles in farmed fish; (ii) the... |
| Tipo: Text |
Palavras-chave: Behavioural syndromes; Farm animals; Individual variation; Personality; Stress response. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00270/38097/37309.pdf |
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| Hori, Takuya; Harakawa, Shinji; Inoue, Noboru; Nagasawa, Hideyuki; Kariya, Tatsuya. |
| The present study was aimed to examine whether a 50-Hz electric field (EF) affects biological stress responses. Male C57BL/6J mice were exposed to either 50-Hz EF (45 kV/m) or given a sham exposure for 30 minutes per day for 1, 2 or 4 weeks and then either mock inoculated or inoculated with the protozoan parasite, Toxoplasma gondii (T. gondii) PLK strain. Survival rate was calculated in mice infected with T. gondii after exposure to EF and the serum antibody levels to heat shock protein 60 (Hsp-60), and mRNA levels for Hsp-60, IFN-γ and IL-12p35 in mouse peripheral leucocytes were determined. As a result, no statistically significant difference was found in survival rate between mice exposed to EF and those in the sham exposure group. When mice were... |
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Palavras-chave: 50-Hz; Electric field; Hsp-60; Stress response; Survival rate. |
| Ano: 2006 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/997 |
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| Inglis,Peter W.; Ciampi,Ana Y.; Salomão,Antonieta N.; Costa,Tânia da S.A.; Azevedo,Vânia C.R.. |
| Seeds of a tropical tree species from Brazil, Astronium fraxinifolium, or zebrawood, were germinated, for the first time in microgravity, aboard the International Space Station for nine days. Following three days of subsequent growth under normal terrestrial gravitational conditions, greater root length and numbers of secondary roots was observed in the microgravity-treated seedlings compared to terrestrially germinated controls. Suppression subtractive hybridization of cDNA and EST analysis were used to detect differential gene expression in the microgravity-treated seedlings in comparison to those initially grown in normal gravity (forward subtraction). Despite their return to, and growth in normal gravity, the subtracted library derived from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microgravity; Stress response; Germination; Suppression subtractive hybridization; Zebrawood. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100014 |
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| Segura, Audrey; Auffret, Pauline; Bibbal, Delphine; Bertoni, Marine; Durand, Alexandra; Jubelin, Gregory; Kerouredan, Monique; Brugere, Hubert; Bertin, Yolande; Forano, Evelyne. |
| Healthy cattle are the primary reservoir for O157:H7 Shiga toxin-producing E coil responsible for human food-borne infections. Because farm environment acts as a source of cattle contamination, it is important to better understand the factors controlling the persistence of E. coil O157:H7 outside the bovine gut. The E. coil O157:H7 strain MC2, identified as a persistent strain in French farms, possessed the characteristics required to cause human infections and genetic markers associated with clinical O157:H7 isolates. Therefore, the capacity of E. coil MC2 to survive during its transit through the bovine gastro-intestinal tract (GIT) and to respond to stresses potentially encountered in extra intestinal environments was analyzed. E. coil MC2 survived in... |
| Tipo: Text |
Palavras-chave: Escherichia coli; STEC; EHEC; O157:H7; Biofilms; Stress response; Persistence. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00434/54588/55972.pdf |
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| Vogel,R.F.; Pavlovic,M.; Hörmann,S.; Ehrmann,M.A.. |
| Lactobacillus sanfranciscensis is a Gram-positive lactic acid bacterium used in food biotechnology. It is necessary to investigate many aspects of a model organism to elucidate mechanisms of stress response, to facilitate preparation, application and performance in food fermentation, to understand mechanisms of inactivation, and to identify novel tools for high pressure biotechnology. To investigate the mechanisms of the complex bacterial response to high pressure we have analyzed changes in the proteome and transcriptome by 2-D electrophoresis, and by microarrays and real time PCR, respectively. More than 16 proteins were found to be differentially expressed upon high pressure stress and were compared to those sensitive to other stresses. Except for one... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: High pressure; Lactobacillus sanfranciscensis; Proteome; Transcriptome; Stress response. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000800013 |
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| Gardon, Tony; Morvan, Lucie; Huvet, Arnaud; Quillien, Virgile; Soyez, Claude; Le Moullac, Gilles; Le Luyer, Jeremy. |
| A combined approach integrating bioenergetics and major biological activities is essential to properly understand the impact of microplastics (MP) on marine organisms. Following experimental exposure of polystyrene microbeads (micro-PS of 6 and 10 μm) at 0.25, 2.5, and 25 μg L−1, which demonstrated a dose-dependent decrease of energy balance in the pearl oyster Pinctada margaritifera, a transcriptomic study was conducted on mantle tissue. Transcriptomic data helped us to decipher the molecular mechanisms involved in P. margaritifera responses to micro-PS and search more broadly for effects on energetically expensive maintenance functions. Genes related to the detoxification process were impacted by long-term micro-PS exposure through a decrease in... |
| Tipo: Text |
Palavras-chave: Microbeads; Marine bivalve; Differentially expressed genes; Stress response; Energy-limited tolerance. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00640/75213/75351.pdf |
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| Simonato,Juliana D.; Fernandes,Marisa N.; Martinez,Cláudia B. R.. |
| The purpose of this work was to evaluate the effects of the water-soluble fraction of gasoline (WSFG) on the Neotropical freshwater fish Prochilodus lineatus. The WSFG was prepared by mixing gasoline in water (1:4) and animals were exposed for 6, 24 and 96h to 5% diluted WSFG or only to water. After exposure, blood was collected from the caudal vein and the gills were removed. The following parameters were analyzed: hematological (hemoglobin, hematocrit, number of red blood cells), osmo-ionic (plasma Na+, Cl- and K+ and plasma osmolarity), metabolic (total plasma proteins and glucose), endocrine (cortisol), density and distribution of chloride cells [CC] in the gills (immunohistochemistry), and branchial Na+/K+-ATPase (NKA) activity. Hemolysis was found to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chloride cells; Hematology; Hydrocarbons; Na+K+-ATPase; Osmoregulation; Stress response. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300683 |
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| Vandeputte, Marc; Porte, J. D.; Auperin, B.; Dupont-nivet, M.; Vergnet, Alain; Valotaire, C.; Claireaux, Guy; Prunet, P.; Chatain, Beatrice. |
| Sea bass is a major species in Mediterranean aquaculture, and is now being subject to selective breeding programs for faster growth. In terrestrial species, it was demonstrated that fast growth may be linked to a correlated degradation of fitness traits. In this experiment, we evaluated 600 young sea bass from a factorial mating of 76 sires and 13 dams. The sires were from four genetic groups, wild (W), domesticated (D), and selected for growth (2 groups, M and P). The 600 offspring were submitted to two acute confinement stress challenges at 6 weeks intervals, and plasma cortisol at one hour post stress was measured. The same fish were also submitted to two swimming challenges at a 5 days interval, where the maximum sustained swimming speed (Umax) of each... |
| Tipo: Text |
Palavras-chave: Aquaculture; Selective breeding; Stress response; Maximum sustained swimming speed; Heritability; Correlated response. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00308/41955/41218.pdf |
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| Oger, Philippe M.; Jebbar, Mohamed. |
| The current paper reviews strategies employed by microorganisms from the deep biosphere, especially piezophiles (from the greek piezo = to press and philo = love), to cope with high hydrostatic pressure (HHP) prevailing in these biotopes. The aim of this review is not to constitute an exhaustive report of our current knowledge on the physiology of piezophiles, as recent reviews have covered part of this subject in detail (Abe, 2007; Lauro and Bartlett, 2008; Michiels et al., 2008; Simonato et al., 2006). Rather, we illustrate here, via a few chosen examples, where we stand in our understanding of the mechanisms employed by microorganisms from the depths of our planet to cope with HHP. (C) 2010 Institut Pasteur. Published by Elsevier Masson SAS. All rights... |
| Tipo: Text |
Palavras-chave: Adaptation and evolution; Archaea; Deep biosphere; High hydrostatic pressure; Piezophile; Stress response. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00027/13797/11043.pdf |
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| Cottin, D; Ravaux, J; Leger, N; Halary, S; Toullec, J; Sarradin, Pierre-marie; Gaill, F; Shillito, B. |
| The annelid Paralvinella grasslei is a deep-sea vent endemic species that colonizes the wall of active chimneys. We report here the first data on its thermal biology based on in vivo experiments in pressurized aquaria. Our results demonstrate that P. grasslei survives a 30 min exposure at 30 degrees C, and suggest that the upper thermal limit of this species is slightly above this temperature. The first signs of stress were noticed at 30 C, such as a significant increase in the animal's activity and the expression of HSP70 stress proteins. A preliminary investigation of the kinetics of stress protein expression surprisingly showed high levels of HSP70 proteins as late as 3.5 h after the heat shock. Finally, we provide here the first sequences for vent... |
| Tipo: Text |
Palavras-chave: IPOCAMP; Annelids; Heat stress; Stress response; Heat shock proteins; Hydrothermal vents. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4570.pdf |
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| Registros recuperados: 17 | |
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