Potential of contemporary evolution to erode fishery benefits from marine reserves
Marine reserves are valued for their ecological role: protecting fish populations from overharvesting while, at the same time, potentially maintaining fisheries yields via recruitment effects (net export of pelagic eggs and larvae) and spillover (net export of post-settled juveniles and mature fish) across reserve borders. Focussing on the spillover effect, we argue that when fitness of the protected individuals depends on the relative size of their home ranges compared to the reserve size, and home range size is a property of the individuals, rapid local adaptation might occur in favour of individuals with smaller home ranges. Individuals that avoid fishing mortality by spending most of th…
Time at risk: individual spatial behaviour drives fitness and marine protected area effectiveness
The effectiveness of Marine Protected Areas (MPAs) depends on the mobility of the populations that are the target of protection, with sedentary species likely to spend more time under protection even within small MPAs. However, little is understood about how individual variation in mobility may influence the risk of crossing an MPA border, as well as the fitness costs associated with being exposed to spillover fisheries. Here we investigated the repeatability of spatial behaviour, its role in determining the probability of being at risk (i.e. exposed to the fishery) and the fitness consequences for the individuals. We acoustically tracked the movements and fate of 282 individuals of three f…
Selection on fish personality differs between a no-take marine reserve and fished areas
9 pages, 2 tables, 3 figures.-- This is an open access article under the terms of the Creative Commons Attribution License
Inferring individual fate from aquatic acoustic telemetry data
13 pages, 8 figures, 1 table.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Lobster reserves as a management tool in coastal waters: Two decades of experience in Norway
9 pages, 4 figures.-- Under a Creative Commons license
Individual level consistency and correlations of fish spatial behaviour assessed from aquatic animal telemetry
The potential for populations to undergo adaptive evolution depends on individual variation in traits under selection and how multiple traits are correlated. While fitness relates to the performance of animals in the wild, most of the research on evolutionary potential of behavioural traits has used captive or mesocosm settings, especially with aquatic organisms. We investigated the individual level consistency (personalities) and correlations (behavioural syndromes) of fitness-related behavioural traits displayed by a harvested marine fish in the natural environment, and the potential of such individual level behaviour to constrain adaptive evolution. For this, we acoustically tracked 303 …
Disentangling structural genomic and behavioural barriers in a sea of connectivity
18 pages, 4 tables, 3 figures.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited
Sea temperature effects on depth use and habitat selection in a marine fish community.
14 pages, 7 figures, 2 tables.-- Open access
Protected areas buffer against harvest selection and rebuild phenotypic complexity
14 pages, 6 figures, 4 tables.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited
Harvest selection on multiple traits in the wild revealed by aquatic animal telemetry
12 pages, 6 figures, 5 tables.-- This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited
Personalities influence spatial responses to environmental fluctuations in wild fish
Abstract Although growing evidence supports the idea that animal personality can explain plasticity in response to changes in the social environment, it remains to be tested whether it can explain spatial responses of individuals in the face of natural environmental fluctuations. This is a major challenge in ecology and evolution as spatial dynamics link individual‐ and population‐level processes.In this study, we investigated the potential of individual personalities to predict differences in fish behaviour in the wild. Specifically, our goal was to answer if individual differences in plasticity of space use to sea surface temperature could be explained by differences in personality along …
Eco-evolutionary dynamics of Atlantic cod spatial behavior maintained after the implementation of a marine reserve
13 pages, 6 figures, 3 tables.-- Open Access
Restoration of Abundance and Dynamics of Coastal Fish and Lobster Within Northern Marine Protected Areas Across Two Decades
This article reviews a suite of studies conducted in a network of coastal Marine Protected Areas (MPAs) in Skagerrak, Southeast Norway. In 2006, Norway’s first lobster reserves were implemented, with the aim of protecting European lobster (Homarus gammarus) through a ban on fixed gear. A before–after control-impact paired series (BACIPS) monitoring program was initiated to evaluate effects of protection on depleted lobster populations. Experimental trapping and capture-recapture techniques were combined to track demography of populations, also including movement of individuals within and beyond MPAs and adjacent control areas. Further, population genetics and parentage studies were applied,…
Time at risk: Individual spatial behaviour drives effectiveness of marine protected areas and fitness
11 pages, 6 figures, 1 table.-- Under a Creative Commons license
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity
Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an important mechanism maintaining isolating barriers, yet their role in sympatric populations and divergence with gene flow is not entirely understood. Here, we revisit the question whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod, by exploring a unique dataset combining whole-genome sequencing data and behavioral data obtained w…
Personality of sea trout and consequences for survival quantified using detailed movement data from a telemetry study in a southern Norwegian fjord
Animal personality may be an important part of the puzzle that is identifying the components affecting survival of an anadromous species in the marine phase. Also of interest is the interplay between individual personality and changing ecological conditions and/or management tools like marine reserves. In the present study, we have monitored more than 100 individuals of sea trout in a southern Norwegian fjord covered by a dense network of acoustic receivers. The resulting dataset provides detailed information on sea trout movement and depth use, in addition to giving information on the sea trout's use of river, fjord and outer fjord and sea habitats. In the present work, I/we will link beha…