Why are fish shrinking as the climate warms? This project aims to uncover the mechanisms behind the temperature-size rule, a phenomenon causing fishes and other aquatic organisms to decline in size as the climate warms. Drawing on multidisciplinary expertise to test three competing theories, this project expects to identify the fundamental processes driving the temperature-size rule phenomenon. Expected outcomes include improved models to forecast the effects of global warming on fish and fisher ....Why are fish shrinking as the climate warms? This project aims to uncover the mechanisms behind the temperature-size rule, a phenomenon causing fishes and other aquatic organisms to decline in size as the climate warms. Drawing on multidisciplinary expertise to test three competing theories, this project expects to identify the fundamental processes driving the temperature-size rule phenomenon. Expected outcomes include improved models to forecast the effects of global warming on fish and fisheries. The new knowledge and predictive power should be of direct benefit to natural resource managers in the continuing effort to mitigate the negative impacts of climate change. This will guide policy and management decisions by enabling more accurate forecasts of the impacts of climate change on wild and cultured fishes.Read moreRead less
Do crayfish use the information carried by low-level electrical signals in the environment? Many vertebrates detect electric fields. Fish communicate electrically. No invertebrate has been shown to do so. We have evidence that crayfish change their behaviour following exposure to low-level, waterborne electrical signals. Crayfish behaviour is currently the preferred model for studying the neurobiology of social hierarchies in animals. Evidence that information is passing from either predators or ....Do crayfish use the information carried by low-level electrical signals in the environment? Many vertebrates detect electric fields. Fish communicate electrically. No invertebrate has been shown to do so. We have evidence that crayfish change their behaviour following exposure to low-level, waterborne electrical signals. Crayfish behaviour is currently the preferred model for studying the neurobiology of social hierarchies in animals. Evidence that information is passing from either predators or conspecifics through an undescribed electrosensory channel would fundamentally change the direction of that research. Behaviour modification using electrical signals could also prove to be a valuable tool in crustacean aquaculture. This is a proposal to discover the nature and behavioural implications of crayfish electroreception.Read moreRead less