Log in
Research led by Professor Charles Tyler at the University of Exeter has provided critical data on the widespread adverse oestrogenic effects of endocrine disrupting chemicals in wild fish populations in the UK. This has triggered the UK government to take action through investment in research and development of policies and guidelines. The research has led to world-wide recognition that endocrine disrupting chemicals are an emerging policy issue, a £40 million demonstration project with the UK government and water industry, and multi-million pound benefits to the UK in terms of improved water quality and safeguarding freshwater wildlife.
In 2005/06, Chittka's team evaluated the hazard of imported foreign bumblebees sold for commercial pollination in the UK and demonstrated a severe risk of them displacing native pollinators. The impact of this work for the UK environment is significant, since it resulted in a DEFRA policy review, mandatory licensing for using non-native pollinators by Natural England, and legal changes which place a fine of up £5,000 and/or 6 month custodial sentence for the uncontrolled use of such pollinators. As a result, all major commercial providers of pollinators now sell a UK native subspecies of bumblebee, Bombus terrestris audax.
Between 1987 and 2011, the Fish group at Imperial College London assisted the Falkland Islands Government by providing fisheries management advice as well as delivering seasonal licencing and fee analyses which determined the number and type of fishing licences allocated to commercial vessels operating in Falkland waters. The work of the Fish group had unprecedented economic, commercial and environmental impacts on the Falkland Islands, where between 50% and 75% of the annual revenue required to fund all infrastructure, research and development in the Islands is generated by the £20M income from the sale of commercial fishing licences. In 2006, the Falkland Islands changed from a seasonal fishing licensing system to a rights-based management system of Individual Transferrable Quotas (ITQs) for fishing companies. The move to ITQs, which was recommended by the Fish Group, generated revenue of £9.5 million in 2010 and the system will remain in place until 2031. During a transition period between 2008 and 2011, the Fish Group supported the planned hand-over of licencing and fee responsibilities to the Falkland Island Fisheries Department which continues to use the bio-economic and stock assessment models developed by the Fish Group at Imperial for the sustainable management of marine resources.
Disease severely limits the expansion of aquaculture. Studies on the immune control of infection have led, in association with industry, to the promotion of disease control utilising 03b2-glucan feed supplements. Knowledge has, via Keele Water, informed infection control strategies used by UK fish farmers. Studies have provided a legacy of young scientists trained by industry and supported by European funding. Advances made have been embraced in the education of veterinarians in Germany and fish production in Eastern Europe. Close collaboration with government bodies and learned societies has ensured that the work has been recognised by policy makers within the fisheries sector.
This research programme has provided convincing evidence that fish perceive pain and has been instrumental in directly informing changes to experimental protocols and influencing welfare guidelines.
We use fish in a variety of ways — for food, farming, experimentation, as public exhibits, in recreational angling and as pets. Many of the procedures that fish are subjected to cause tissue damage that would give rise to the sensation of pain in mammals. This research programme uses techniques in neurobiology, physiology and animal behaviour to discover how the fish are affected by these procedures. This has not only improved the welfare of fish, but also influenced how the public views these animals through media dissemination.
Omega-3 long-chain polyunsaturated fatty acids (LC-PUFA) are essential nutrients and have many beneficial effects on human health. Fish are the major source of omega-3 LC-PUFA in the human diet, and its level was maintained in farmed fish through the use of fish oil as a major component of extruded aquafeeds. Around 10 years ago it became clear that demand for fish oil would rapidly outstrip supply, limiting expansion of aquaculture activities, if fish oil use was not reduced. The challenge this presented was that alternatives to fish oil lack omega-3 LC-PUFA. However, replacement of fish oil with more sustainable alternatives is now standard practice in the industry. Research into fish oil replacement and omega-3 metabolism in the Nutrition Group, Institute of Aquaculture has been at the forefront of the scientific research in the UK and Europe that has ensured nutritional quality of farmed fish by developing alternative feed ingredients and feeding strategies that have maintained levels of omega-3 LC-PUFA despite radical changes to feed composition driven by sustainability and food security. This work culminated with recent demonstrations that farmed salmon can be net producers of marine protein (2010) and oil (2011).
In the early 2000s, Taylor and Rico, C. at UEA developed a molecular fingerprinting assay to identify visually indistinguishable cod, haddock and whiting eggs for the accurate assessment of fish stocks. This is essential in setting fishing quotas for healthy populations. The impacts are:
The effects of accidental salmon farm escapes, intentional releases of non-native salmon and trout, and stocking of fertile farm-reared trout, on the genetic makeup, fitness and long-term viability of wild populations has been a matter of increasing concern over the past two decades. Ferguson and Prodöhl's group demonstrated that offspring of farmed, first and second generation hybrid and backcrossed salmon and trout showed reduced survival compared with wild native fish, and that repeated escape/introduction events can cause a reduction in the biological fitness of vulnerable wild populations leading to reductions in numbers and potentially to their extinction. These findings led directly to changes in regulations and guidelines by relevant major stakeholders including the Environment Agency (England & Wales), Wild Trout Trust, North Atlantic Salmon Conservation Organisation, World Wildlife Fund, and governments in Europe and North America.
Appropriate land policy is vital to ensure sustainable food supplies, economic development and environmental protection. Research by the Centre for Rural Policy Research (CRPR) has developed the policy and management implications of the ecosystems services approach to valuing and protecting the environment, which stresses integrated and equitable management of land, water and living resources. The research has contributed to major shifts in policy and practice by national government bodies and changes in the attitudes and behaviour of farming communities. The main impacts have been:
Application of Bangor's DNA forensic research has had major impacts on the management and control of illegal wildlife trade. After initial work providing evidence for criminal prosecutions with wider deterrent effects on wildlife crime, Bangor-led research went on to apply these techniques to trace fish (products) to their source populations to ban illegal, unreported and unregulated fishing practices. Since 2009, this work has improved stock management by the UK government and European Commission, directly affected the Common Fisheries Policy reform and has been implemented by the Marine Stewardship Council as a verification tool for correct labelling of products.