Browsing Artikler, rapporter, filmer / Articles, reports, movies by Subject "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920"
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Do fall additions of salmon carcasses benefit food webs in experimental streams?
(Journal article; Peer reviewed, 2011)Research showing that salmon carcasses support the productivity and biodiversity of aquatic and riparian ecosystems has been conducted over a variety of spatial and temporal scales. In some studies, carcasses were manipulated ... -
Ecological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic, and profundal lake habitats
(Journal article; Peer reviewed, 2013)Understanding how a monophyletic lineage of a species diverges into several adaptive forms has received increased attention in recent years, but the underly- ing mechanisms in this process are still under debate. Postglacial ... -
Linking resource availability and habitat structure to stream organisms: an experimental and observational assessment
(Journal article; Peer reviewed, 2014)An experiment and a mark-recapture field study of juvenile coho salmon ( Oncorhynchus kisutch ) were conducted to identify controls of key energy flow chains in river food webs. In the small-scale experiment, we ... -
Regressive evolution of the pelvic complex in stickleback fishes: a study of convergent evolution
(Journal article; Peer reviewed, 2013)Background: Regressive evolution of the pelvic complex has been observed in populations of three of five stickleback genera, Gasterosteus, Pungitius, and Culaea, from young freshwater habitats (<18,000 years old). It has ... -
Small Changes in Gene Expression of Targeted Osmoregulatory Genes When Exposing Marine and Freshwater Threespine Stickleback (Gasterosteus aculeatus) to Abrupt Salinity Transfers
(Journal article; Peer reviewed, 2014)Salinity is one of the key factors that affects metabolism, survival and distribution of fish species, as all fish osmoregulate and euryhaline fish maintain osmotic differences between their extracellular fluid and either ... -
Spatio-temporal patterns in pelvic reduction in threespine stickleback (Gasterosteus aculeatus L.) in Lake Storvatnet
(Peer reviewed; Journal article, 2012)Questions: The pelvic girdle with associated spines is an integrated anti-predator defence apparatus, and is assumed to protect against piscivores in the threespine stickleback. On the other hand, it might be costly to ... -
The temporal window of ecological adaptation in postglacial lakes: a comparison of head morphology, trophic position and habitat use in Norwegian threespine stickleback populations
(Journal article; Peer reviewed, 2016)Background: Studying how trophic traits and niche use are related in natural populations is important in order to understand adaptation and specialization. Here, we des cribe trophic trait diversity in twenty-five ... -
Variation in Lateral Plate Quality in Threespine Stickleback from Fresh, Brackish and Marine Water: A Micro-Computed Tomography Study
(Journal article; Peer reviewed, 2016)Introduction It is important to understand the drivers leading to adaptive phenotypic diversity within and among species. The threespine stickleback (Gasterosteus aculeatus) has become a model system for investigating ...