• Publications
  • Influence
Near-future carbon dioxide levels alter fish behaviour by interfering with neurotransmitter function
It is shown that abnormal olfactory preferences and loss of behavioural lateralization exhibited by two species of larval coral reef fish exposed to high CO2 can be rapidly and effectively reversed by treatment with an antagonist of the GABA-A receptor, a major neurotransmitter receptor in the vertebrate brain. Expand
Hypoxia induces adaptive and reversible gross morphological changes in crucian carp gills
It is shown that crucian carp living in normoxic water have gills that lack protruding lamellae, the primary site of O2 uptake in fish, the first demonstration of an adaptive and reversible gross morphological change in the respiratory organ of an adult vertebrate in response to changes in the availability of oxygen. Expand
Roles of brain monoamine neurotransmitters in agonistic behaviour and stress reactions, with particular reference to fish
The similarities between fish and mammalian monoaminergic functions suggest that these are phylogenetically very old mechanisms that have been conserved during the last 400 million years of vertebrate evolution. Expand
Interacting effects of elevated temperature and ocean acidification on the aerobic performance of coral reef fishes
Concerns about the impacts of ocean acidification on marine life have mostly focused on how reduced carbonate saturation affects calcifying organisms. Here, we show that levels of CO2-inducedExpand
Evolutionary background for stress-coping styles: Relationships between physiological, behavioral, and cognitive traits in non-mammalian vertebrates
Experiments with the lizard Anolis carolinensis reveal connections between monoaminergic activity in limbic structures, proactive behavior in novel environments, and the establishment of social status via agonistic behavior, which suggest that within-species diversity of physiological, behavioral and cognitive correlates of stress responsiveness is maintained by natural selection throughout the vertebrate sub-phylum. Expand
Life on the edge: thermal optima for aerobic scope of equatorial reef fishes are close to current day temperatures.
Investigating the thermal range at which aerobic metabolic performance is optimum in equatorial populations of coral reef fish in northern Papua New Guinea indicates that low-latitude reef fish populations are living close to their thermal optima and may be more sensitive to ocean warming than higher-latitudes populations. Expand
Temperature alters the respiratory surface area of crucian carp Carassius carassius and goldfish Carassius auratus
The results suggest that the alteration of gill morphology is triggered at a given temperature, and very high oxygen affinities of crucian carp haemoglobins are revealed, particularly at high pH and low temperature, which may be prerequisites for the reduced gill respiratory surface area at low temperatures. Expand
Gill remodeling in fish – a new fashion or an ancient secret?
  • G. Nilsson
  • Biology, Medicine
  • Journal of Experimental Biology
  • 15 July 2007
Fishes appear to have a respiratory surface area that is matched to their oxygen demands, and gill remodeling in response to changing respiratory requirements could be an ancient mechanism, occurring in many more teleosts than presently known. Expand
Elevated temperature reduces the respiratory scope of coral reef fishes
Differences in thermal tolerance between species, and possibly families, suggest that the community structure of reef fish assemblages might change significantly as ocean temperatures increase. Expand
Serotonin as a regulator of hypothalamic-pituitary-interrenal activity in teleost fish
The results lends further support to the hypothesis that the brain serotonergic system plays a key role in integrating autonomic, behavioral and neuroendocrine stress-responses in fish as well as mammals, suggesting that not only the structural and biochemical organization, but also the function of the serotonerential system has been conserved during vertebrate evolution. Expand