A5028845660- Physiological and biochemical adaptations
- Ocean Acidification Effects and Responses
- Marine Bivalve and Aquaculture Studies
- Aquaculture Nutrition and Growth
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Adipose Tissue and Metabolism
- Mitochondrial Function and Pathology
- Cephalopods and Marine Biology
- Genetic diversity and population structure
- Environmental DNA in Biodiversity Studies
- Marine Biology and Ecology Research
- Arctic and Antarctic ice dynamics
- Genomics and Phylogenetic Studies
- Meat and Animal Product Quality
- Neurobiology and Insect Physiology Research
- Marine and fisheries research
- Marine animal studies overview
- Calcium Carbonate Crystallization and Inhibition
- Bacterial Genetics and Biotechnology
- High Altitude and Hypoxia
- Metabolomics and Mass Spectrometry Studies
- Isotope Analysis in Ecology
- Crustacean biology and ecology
- Polar Research and Ecology
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2016-2025
Progress-Institut für Wirtschaftsforschung
2008
University of Turku
2007
University of Zurich
2007
Ghent University
2007
Universität Hamburg
2007
Johannes Gutenberg University Mainz
2007
Osnabrück University
1996-2000
Abstract. Future ocean acidification has the potential to adversely affect many marine organisms. A growing body of evidence suggests that species could suffer from reduced fertilization success, decreases in larval- and adult growth rates, calcification even mortality when being exposed near-future levels (year 2100 scenarios) acidification. Little research focus is currently placed on those organisms/taxa might be less vulnerable anticipated changes chemistry; this unfortunate, as...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 37:253-270 (2008) - DOI: https://doi.org/10.3354/cr00766 Cod and climate in a latitudinal cline: physiological analyses of effects marine fishes Hans-O. Pörtner*, Christian Bock, Rainer Knust, Gisela Lannig, Magnus Lucassen, Felix Christopher Mark, Franz Josef Sartoris Alfred-Wegener-Institut für Polar- und Meeresforschung,...
Adjustments in mitochondrial properties and capacities are crucial acclimatization to seasonal cold as well evolutionary adaptation of marine ectotherms. To examine whether gene expression mechanisms contribute different settings aerobic populations cod (Gadus morhua) along a latitudinal cline, maximum activities key enzymes metabolism their respective mRNA levels were compared white muscle liver (4 degrees C) warm (10 acclimated individuals from the North Sea Barents Sea, respectively. In...
The preservation of ion balance and pH despite environmental fluctuations is essential for the maintenance vital cellular functions. While several transporters contribute to acid-base regulation in fish, involvement expression key under hypercapnia remain be established. Here, two members HCO(3)(-) transporter family (Na(+)/HCO(3)(-) cotransporter NBC1 Cl(-)/HCO(3)(-) exchanger AE1) were described first time gills marine fish. Benthic eelpout Zoarces viviparus acclimated 10,000 ppm CO(2)....
Exposure to fluctuating temperatures accelerates the mitochondrial respiration and increases formation of reactive oxygen species (ROS) in ectothermic vertebrates including fish. To date, little is known on potential oxidative damage protective antioxidative defense mechanisms brain fish under cold shock. In this study, concentration cellular protein carbonyls was significantly increased by 38% within 1 h after exposure (from 28°C 18°C) zebrafish (Danio rerio). addition, specific activity...
It is widely accepted that adaptation to the extreme cold has evolved at expense of high thermal sensitivity. However, recent studies have demonstrated significant capacities for warm acclimation in Antarctic fishes. Here, we report on hepatic metabolic reorganization and its putative molecular background eelpout (Pachycara brachycephalum) during 5°C over 6 wk. Elevated cytochrome c oxidase suggest use pathways different from those temperate fish. The capacity this enzyme rose by 90%, while...
Research on the thermal biology of Antarctic marine organisms has increased awareness their vulnerability to climate change, as a flipside adaptation life in permanent cold and limited capacity acclimate variable temperatures. Here, we employed species-specific microarray eelpout, Pachycara brachycephalum, identify long-term shifts gene expression after 2 months acclimation six temperatures between -1 9 °C. Changes cellular processes comprised signalling, post-translational modification,...
Hypercapnia and elevated temperatures resulting from climate change may have adverse consequences for many marine organisms. While diverse physiological ecological effects been identified, changes in those molecular mechanisms, which shape the phenotype of a species limit its capacity to compensate, remain poorly understood. Here, we use global gene expression profiling through RNA-Sequencing study transcriptional responses ocean acidification warming gills boreal spider crab Hyas araneus...
Abstract Lake Baikal, the world's most voluminous freshwater lake, has experienced unprecedented warming during last decades. A uniquely diverse amphipod fauna inhabits littoral zone and can serve as a model system to identify role of thermal tolerance under climate change. This study aimed sublethal constraints in two abundant endemic Baikal amphipods, Eulimnogammarus verrucosus cyaneus , Gammarus lacustris ubiquitous gammarid Holarctic. As latter is only found some shallow isolated bays we...
Information on connectivity and genetic structure of marine organisms remains sparse in frontier ecosystems such as the Arctic Ocean. Filling these knowledge gaps becomes increasingly urgent, is undergoing rapid physical, ecological socio-economic changes. The abundant widely distributed polar cod (Boreogadus saida) highly adapted to waters, its larvae juveniles live close association with sea ice. Through a reduced-representation sequencing approach, this study explored spatial at...
σ S (RpoS) is a highly unstable global regulatory protein in Escherichia coli , whose degradation inhibited by various stress signals, such as carbon starvation, high osmolarity and heat shock. As consequence, these stresses result the induction of ‐regulated stress‐protective proteins. The two‐component‐type response regulator, RssB, essential for rapid proteolysis probably involved transduction some signals. Acetyl phosphate can be used phosphodonor phosphorylation regulators vitro and,...
The specific transporters involved in maintenance of blood pH homeostasis cephalopod molluscs have not been identified to date. Using situ hybridization and immunohistochemical methods, we demonstrate that Na + /K -ATPase ( soNKA), a V-type H soV-HA), /HCO 3 − cotransporter soNBC) are colocalized NKA-rich cells the gills Sepia officinalis. mRNA expression patterns these selected metabolic genes were examined response moderately elevated seawater Pco 2 (0.16 0.35 kPa) over time course 6 wk...
The vulnerability of fish embryos and larvae to environmental factors is often attributed a lack adult-like organ systems (gills) thus insufficient homeostatic capacity. However, experimental data supporting this hypothesis are scarce. Here, by using Atlantic cod (Gadus morhua) as model, the relationship between embryo (to projected ocean acidification warming) capacity was explored through parallel analyses stage-specific mortality in vitro activity expression major ion pumps (ATP-Synthase,...
Adjustments in mitochondrial properties and capacities are crucial acclimatization to seasonal cold evolutionary adaptation of marine ectotherms. Although long-term compensatory increments aerobic capacity fish tissues have frequently been described response cold, much less is known about transitional phases gene expression patterns involved. We investigated the time course adjustment acute liver eurythermal eelpout Zoarces viviparus. Whereas citrate synthase (CS) activity rose progressively...
Ocean warming and acidification are threatening marine ecosystems. In animals, is thought to enhance ion regulatory costs thereby baseline energy demand, while elevated temperature also increases metabolic rate. Here we investigated standard rates (SMR) plasma parameters of Atlantic cod (Gadus morhua) after 3-4 weeks exposure ambient future PCO2 levels (550, 1200 2200 µatm) at two temperatures (10, 18 °C). vivo branchial were studied in isolated, perfused gill preparations. Animals reared °C...
Temperature is the most pervasive abiotic environmental factor for aquatic organisms. Fluctuations in temperature range lead to changes metabolic performance. Here, we aimed identify whether surpassing thermal preference zones correlated with shifts universal cellular stress markers of protein integrity, responses oxidative and lactate content, as indicators anaerobic metabolism. Exposure Lake Baikal endemic amphipod species Eulimnogammarus verrucosus (Gerstfeldt, 1858), Ommatogammarus...