A5070428614- Physiological and biochemical adaptations
- Aquaculture Nutrition and Growth
- Fish Ecology and Management Studies
- Aquaculture disease management and microbiota
- Ocean Acidification Effects and Responses
- Fish biology, ecology, and behavior
- Neurobiology and Insect Physiology Research
- Meat and Animal Product Quality
- Ichthyology and Marine Biology
- Neuropeptides and Animal Physiology
- Cardiovascular, Neuropeptides, and Oxidative Stress Research
- High Altitude and Hypoxia
- Marine animal studies overview
- Pharmacological Effects and Assays
- Nitric Oxide and Endothelin Effects
- Coronary Artery Anomalies
- Water Quality Monitoring Technologies
- Cephalopods and Marine Biology
- Regulation of Appetite and Obesity
- Zebrafish Biomedical Research Applications
- Surgical Simulation and Training
- Adipose Tissue and Metabolism
- Veterinary Pharmacology and Anesthesia
- Animal Behavior and Reproduction
- Animal Vocal Communication and Behavior
University of Gothenburg
2015-2024
Charité - Universitätsmedizin Berlin
2018
Tromsø research foundation
2018
Aarhus School of Architecture
2018
Transonic Systems (United States)
2015
Swedish University of Agricultural Sciences
2015
Karolinska Institutet
2014
Johns Hopkins University
2006
St George's Hospital
2000
The University of Queensland
1997
As a consequence of increasing atmospheric CO2, the world's oceans are becoming warmer and more acidic. Whilst ecological effects these changes poorly understood, it has been suggested that fish performance including growth will be reduced mainly as result limitations in oxygen transport capacity. Contrary to predictions given by oxygen- capacity-limited thermal tolerance hypothesis, we show aerobic scope cardiac Atlantic halibut (Hippoglossus hippoglossus) increase following 14–16 weeks...
Temperature acclimation may offset the increased energy expenditure (standard metabolic rate, SMR) and reduced scope for activity (aerobic scope, AS) predicted to occur with local global warming in fishes other ectotherms. Yet, time course mechanisms of this process is little understood. Acclimation dynamics SMR, maximum AS specific dynamic action feeding (SDA) were determined shorthorn sculpin (Myoxocephalus scorpius) after transfer from 10°C 16°C. SMR first week by 82% reducing 55% initial...
ABSTRACT Cardiac output, ventral and dorsal aortic blood pressure, heart rate, coeliac mesenteric artery flow were recorded simultaneously in the Atlantic cod, Gadus morhua L., at rest, during exercise, hypoxia after feeding. In resting unfed animals, was 4.1±0.8mI min−1 kg−1 3.5±1.1 ml (mean± S.E.M., N=10); together, these flows represent approximately 40% of cardiac output. Exercise or exposure to resulted increased visceral vascular resistance, leading reductions flows. Coeliac 24 h...
ABSTRACT The aim of this study was to investigate cardiac performance and cardiovascular control in two red-blooded nototheniid species antarctic fishes, Pagothenia bernacchii (a benthic fish) P. borchgrevinki cryopelagic fish), make comparisons with existing information on haemoglobin-free teleosts. In quiescent at 0°C ventral aortic pressure (PVA) 3.09kPa output (Q̇) 17.6 ml min−1 kg−1, a heart rate (fH) 10.5 beats stroke volume 1.56 kg−1. Following atropine treatment, Q̇ maintained but...
Atlantic cod were subjected to 12-15 min swimming exercise at 2/3 body lengths s-1 in a Blazka-type swim tunnel. Pre- and postbranchial blood pressures, cardiac output (ventral aortic flow) heart rate continuously recorded, samples for measurement of arterial mixed venous oxygen tension taken before the end period. In second group fish, similar regimes, analysis plasma concentrations catecholamines. pressures increase during exercise, while decreases. The effect on is due an both stroke...
Building a virtual laboratory for teaching and learning is highly complex process, incorporating diverse areas such as interaction design, visualisation, pedagogy. This article focuses on the production implementation issues that were found in comparison of two different projects, discuss which design considerations can be drawn from these observations. Two web-based laboratories - Gas Laboratory Virtual Colour developed independently each other within content areas. The share considerable...
Cardiovascular disease may pose a major threat to the health and welfare of farmed fish. By investigating range established cardiovascular indicators, we aimed determine prevalence, severity consequences this affliction in rainbow trout (Oncorhynchus mykiss) from an open cage farm Baltic Sea, freshwater lake, land-based recirculating aquaculture system. We also identify environmental, anthropogenic physiological factors contributing towards development disease. The majority possessed...
ABSTRACT Cardiac output, ventral and dorsal aortic blood pressure heart rate were recorded simultaneously in unanaesthetized hagfish, Myxine glutinosa L. Mean cardiac output was 8.7 ml min−1 kg−1 mean 22.3 beats min−1. The absence of beat-to-beat oscillations consistent with the lack an extrinsic innervation hagfish. pressures 1.04 kPa (ventral aorta) 0.77kPa (dorsal aorta). Injection adrenaline into caudal vein significantly increased stroke volume, both aortas. Peak close to 25 kg−1....
Abstract Investigating the mechanisms that fish employ to maintain homeostasis in their everyday life requires measurements of physiological and behavioural responses field. With multivariate bio-loggers, we continuously measured gastrointestinal blood flow (GBF), heart rate, activity body temperature rainbow trout ( Oncorhynchus mykiss ) swimming freely amongst ~5000 conspecifics a sea cage. Our findings clearly demonstrate while both acute aquaculture-related stress spontaneous resulted...
SUMMARY The hypothesis that the increase in post-prandial splanchnic blood flow will be reduced during hypoxia to prioritise other organs was tested by measuring cardiac output and gut a stepwise hypoxic challenge (five steps, from 20.6 3.9 kPa, 5 min of exposure each level) before after feeding (equivalent 2.9% body mass). Splanchnic flow, both absolute relative output, increased feeding. Mean 71% (from 9.6±1.6 14.9±1.6 ml min-1 kg-1, means± S.E.M.). Before feeding, 24.0% output,and this...
ABSTRACT The nervous regulation of heart rate and stroke volume in the Atlantic cod Gadus morhua was investigated both vivo, during rest exercise, vitro. cholinergic adrenergic influences on were estimated experiments with injections atropine sotalol. At tonus 38% 21%, respectively (ratio 1·81:1). end an exercise period, had decreased to 15% but increased 28% 0·54:1). results suggest that variation is a major factor rate. In one group fish, cardiac output also measured, allowing calculation...
The multiple convergent evolution of high systemic blood pressure among terrestrial vertebrates has always been accompanied by lowered pulmonary pressure. In mammals, birds and crocodilians, this cardiac separation pressures relies on the complete division right left ventricles a ventricular septum. However, anatomy ventricle most reptiles does not allow for anatomical division, but hearts pythons varanid lizards can produce while keeping low. It is also known that these two groups are...