ABSTRACT
Research on the values of fish populations and fisheries has primarily focused on bio-economic aspects; a more nuanced and multidimensional perspective is mostly neglected. Although a range of social aspects is increasingly being considered in fisheries research, there is still no clear understanding as to how to include these additional values within management policies nor is there a cogent appreciation of the major knowledge gaps that should be tackled by future research. This paper results from a workshop held during the 50th anniversary symposium of the Fisheries Society of the British Isles at the University of Exeter, UK, in July 2017. Here, we aim to highlight the current knowledge gaps on the values of fish populations and fisheries thus directing future research. To this end, we present eight questions that are deeply relevant to understanding the values of fish populations and fisheries. These can be applied to all habitats and fisheries, including freshwater, estuarine and marine.
Subject(s)
Conservation of Natural Resources/methods , Fishes/physiology , Animals , Biodiversity , Ecosystem , Fisheries , Knowledge Bases , Population DynamicsABSTRACT
Using the examples on hereditary and environmental factors affecting salmonid populations, this paper demonstrates that ecologists have long appreciated the importance of local adaptation and intraspecific diversity for salmonid conservation. Conservationists, however, need to embrace the genomics revolution and use new insights to improve salmonid management. At the same time, researchers must be forthcoming with the uses and limitations of genomics, and conservation must move forward in the face of scientific uncertainty.
Subject(s)
Conservation of Natural Resources , Genomics , Salmonidae/genetics , Adaptation, Biological/genetics , Animals , UncertaintyABSTRACT
Prey capture success and foraging mode were studied in brown trout Salmo trutta at temperatures ranging from 5.7 to 14.0° C. At low temperatures, there was a positive correlation between prey capture success and the proportion of time that the fish spent holding feeding stations. This correlation was not found at temperatures >10° C.
