A5033965291- Physiological and biochemical adaptations
- Aquaculture Nutrition and Growth
- Fish Ecology and Management Studies
- Ocean Acidification Effects and Responses
- Aquaculture disease management and microbiota
- Fish biology, ecology, and behavior
- Marine Bivalve and Aquaculture Studies
- Environmental Toxicology and Ecotoxicology
- Marine and fisheries research
- Meat and Animal Product Quality
- Neurobiology and Insect Physiology Research
- Ichthyology and Marine Biology
- Marine animal studies overview
- High Altitude and Hypoxia
- Animal Behavior and Reproduction
- Adipose Tissue and Metabolism
- Bacteriophages and microbial interactions
- Bat Biology and Ecology Studies
- Crustacean biology and ecology
- Biomimetic flight and propulsion mechanisms
- Coral and Marine Ecosystems Studies
- Fish Biology and Ecology Studies
- Zebrafish Biomedical Research Applications
- Sports Performance and Training
- Animal Virus Infections Studies
University of Exeter
2017-2023
University of Canterbury
2011-2023
Bangor University
2021
British Antarctic Survey
1977-2009
University of Birmingham
1978-2009
Christ University
1986-1996
University of Hull
1975-1978
University of Bristol
1975
Polyomaviruses are a family of DNA tumor viruses that known to infect mammals and birds. To investigate the deeper evolutionary history family, we used combination viral metagenomics, bioinformatics, structural modeling approaches identify characterize polyomavirus sequences associated with fish arthropods. Analyses drawing upon divergent new indicate polyomaviruses have been gradually co-evolving their animal hosts for at least half billion years. Phylogenetic analyses individual genes...
ABSTRACT Hatchery-reared brown trout (Salmo trutta L.) were exercised continuously for periods of several weeks at swimming speeds 1·5, 3·0 and 4·5 body lengths/s their rates growth determined. Changes in the major muscle constituents determined by biochemical analysis changes cells using histochemistry electron microscopy. At lowest speed fish grew much more rapidly, converted food into flesh efficiently than controls kept still water. Large stores glycogen lipid built up. Gross observed...
Specialization to a particular environment is one of the main factors used explain species distributions. Antarctic fishes are often cited as classic example illustrate specialization process and regarded archetypal stenotherms. Here we show that fish Pagothenia borchgrevinki has retained capacity compensate for chronic temperature change. By displaying astounding plasticity in cardiovascular response metabolic control, maintained locomotory performance at elevated temperatures. Our...
Antarctic fish Pagothenia borchgrevinki in McMurdo Sound, Antarctica, inhabit one of the coldest and most thermally stable all environments. Sea temperatures under sea ice this region remain a fairly constant -1.86 degrees C year round. This study examined thermal plasticity cardiac function P. to determine whether specialisation low has led loss ability acclimate physiological function. Fish were acclimated -1 degree 4 for 4-5 weeks output was measured at rest after exhaustive exercise...
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...
Populations of fishes provide valuable services for billions people, but face diverse and interacting threats that jeopardize their sustainability. Human population growth intensifying resource use food, water, energy goods are compromising fish populations through a variety mechanisms, including overfishing, habitat degradation declines in water quality. The important challenges raised by these issues have been recognized led to considerable advances over past decades managing mitigating...
Goldfish (Carassius auratus) were exercised continuously for periods of 28 days at swimming speeds 1.5, 3.0 and 4.5 body lengths per second their rates growth determined. Changes in muscle fibre size examined, as changes which occurred the concentrations major chemical constituents these cells. These fish, typical carp family that they are found only still or slowly moving water, did not adapt well to flowing water environment any speed. They often grew less than controls, although consuming...
As a response to ocean warming, shifts in fish species distribution and changes production have been reported, that partly attributed temperature effects on the physiology of animals. The Southern Ocean hosts some most rapidly warming regions earth Antarctic organisms are reported be especially sensitive. While cellular molecular organismic levels appear to, at least partially, compensate for elevated temperatures, consequences acclimation whole organism often less clear. Growth reproduction...
ABSTRACT Arterial and mixed venous blood were sampled through chronically implanted cannulae from rested swimming hagfish. remained high when hagfish swum for 15min at a velocity of 20cms-1. fell 17-2mmHg rest to 3’5 mmHg after swimming, the arteriovenous pH difference increased 0·15 0·25 units. Whole oxygen equilibrium curves essentially hyperbolic (Hill’s n value = 1·38) gave half-saturation (P50) 12·3 7·8 16°C. A CO2-Bohr factor (ϕ ΔlogP50/ΔpH) –0·43 limited buffering capacity blood,...
Haematocrit, haemoglobin concentration, plasma osmolarity and glucose concentration of the Antarctic nototheniid fishes Pagothenia borchgrevinki Trematomus bernacchii were monitored during 24 h periods exposure to 3 6° C. The same haematological variables also measured in P. following a 5–6 week period 4° C acclimation. first measurements acutely thermally‐stressed nototheniids revealed delayed hyperglycaemia which related well relatively slow stress‐related elevation cortisol these species....
Gill Na + ‐K ‐ATPase activities, haematocrits, condition factors, plasma osmolarities, cortisol, chloride and sodium concentrations were measured in sockeye salmon ( Oncorhynchus nerka ) transferred rapidly from fresh water to sea water. Comparisons made between that successfully adapted failed adapt. In there was a brief but large fluctuation ionic rose initially regulated after 24–48 h. adapt water, cortisol remained elevated, haematocrit increased, not the became severely dehydrated...