Browsing Brage IMR by Author "Hutchings, Jeffrey"
Now showing items 1-20 of 28
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Allee effects and the Allee-effect zone in northwest Atlantic cod
Perälä, Tommi; Hutchings, Jeffrey; Kuparinen, Anna (Peer reviewed; Journal article, 2022)According to the theory of compensatory dynamics, depleted populations should recover when the threat responsible for their decline is removed because per capita population growth is assumed to be highest when populations ... -
Atlantic salmon survival at sea: temporal changes that lack regional synchrony
Tirronen, Maria; Hutchings, Jeffrey; Pardo, Sebastián A.; Kuparinen, Anna (Peer reviewed; Journal article, 2022)Spatial and temporal synchrony in abundance or survival trends can be indicative of whether populations are affected by common environmental drivers. In Atlantic salmon (Salmo salar), return rates to natal rivers have ... -
Combining population genomics with demographic analyses highlights habitat patchiness and larval dispersal as determinants of connectivity in coastal fish species
Knutsen, Halvor; de Oliveira Catarino, Diana Sofia; Rogers, Lauren; Sodeland, Marte; Mattingsdal, Morten; jahnke, marlene; Hutchings, Jeffrey; Mellerud, Ida Kristin; Espeland, Sigurd Heiberg; Johanneson, Kerstin; Roth, Olivia; Hansen, Michael Møller; Jentoft, Sissel; Andre, Carl; Jorde, Per Erik (Peer reviewed; Journal article, 2022)Gene flow shapes spatial genetic structure and the potential for local adaptation. Among marine animals with nonmigratory adults, the presence or absence of a pelagic larval stage is thought to be a key determinant in ... -
Combining population genomics with demographic analyses highlights habitat patchiness and larval dispersal as determinants of connectivity in coastal fish species
Knutsen, Halvor; de Oliveira Catarino, Diana Sofia; Rogers, Lauren; Sodeland, Marte; Mattingsdal, Morten; jahnke, marlene; Hutchings, Jeffrey; Mellerud, Ida Kristin; Espeland, Sigurd Heiberg; Johanneson, Kerstin; Roth, Olivia; Hansen, Michael Møller; Jentoft, Sissel; Andre, Carl; Jorde, Per Erik (Peer reviewed; Journal article, 2022)Gene flow shapes spatial genetic structure and the potential for local adaptation. Among marine animals with nonmigratory adults, the presence or absence of a pelagic larval stage is thought to be a key determinant in ... -
Consequences of single-locus and tightly linked genomic architectures for evolutionary responses to environmental change
Oomen, Rebekah Alice; Kuparinen, Anna; Hutchings, Jeffrey (Peer reviewed; Journal article, 2020)Genetic and genomic architectures of traits under selection are key factors influencing evolutionary responses. Yet, knowledge of their impacts has been limited by a widespread assumption that most traits are controlled ... -
Correlation between body size and longevity: New analysis and data covering six taxonomic classes of vertebrates
Kuparinen, Anna; Yeung, Emily; Hutchings, Jeffrey (Peer reviewed; Journal article, 2023)Large bodied species are known to live longer than small bodied species. However, it is less clear whether the positive correlation varies across taxa. In this short communication, we combine data entries from literature ... -
Differential reproductive plasticity under thermal variability in a freshwater fish (Danio rerio)
Massey, Melanie D.; Fredericks, M Kate; Malloy, David; Arif, Suchinta; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)Human-driven increases in global mean temperatures are associated with concomitant increases in thermal variability. Yet, few studies have explored the impacts of thermal variability on fitness-related traits, limiting our ... -
Disentangling conditional effects of multiple regime shifts on Atlantic cod productivity
Perälä, Tommi; Olsen, Esben Moland; Hutchings, Jeffrey (Peer reviewed; Journal article, 2020)Regime shifts are increasingly prevalent in the ecological literature. However, definitions vary and detection methods are still developing. Here, we employ a novel statistical algorithm based on the Bayesian online ... -
Explicit incorporation of spatial variability in a biomass dynamics assessment model
McDonald, Raphaël R; Keith, David M.; Sameoto, Jessica A.; Hutchings, Jeffrey; Flemming, Joanna M. (Peer reviewed; Journal article, 2021)The sustainable management of fisheries has largely relied on stock assessment models that assume stocks are homogeneous throughout their domain. However, ignoring complex underlying spatial patterns can lead to increased ... -
Fine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fish
Roney, Nancy; Oomen, Rebekah Alice; Knutsen, Halvor; Olsen, Esben Moland; Hutchings, Jeffrey (Journal article; Peer reviewed, 2018)Successful resource‐management and conservation outcomes ideally depend on matching the spatial scales of population demography, local adaptation, and threat mitigation. For marine fish with high dispersal capabilities, ... -
Five centuries of cod catches in Eastern Canada
Schijns, Rebecca; Froese, Rainer; Hutchings, Jeffrey; Pauly, Daniel (Peer reviewed; Journal article, 2021)The fishery for Northern Atlantic cod (Gadus morhua) off Newfoundland and Labrador, Eastern Canada, presents the most spectacular case of an exploited stock crashed in a few decades by an industrial bottom trawl fishery ... -
Genomic reaction norms inform predictions of plastic and adaptive responses to climate change
Oomen, Rebekah Alice; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)Genomic reaction norms represent the range of gene expression phenotypes (usually mRNA transcript levels) expressed by a genotype along an environmental gradient. Reaction norms derived from common-garden experiments are ... -
Genomic reaction norms inform predictions of plastic and adaptive responses to climate change
Oomen, Rebekah Alice; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)Genomic reaction norms represent the range of gene expression phenotypes (usually mRNA transcript levels) expressed by a genotype along an environmental gradient. Reaction norms derived from common-garden experiments are ... -
Gill area explains deviations from body size–metabolic rate relationship in teleost fishes
Kuparinen, Anna; Gielewski, Darby; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)Whether gill area constrains fish metabolism through oxygen limitation is a debated topic. Here, the authors provide insights into this question by analysing mass-specific metabolic rates across 44 teleost fishes extracted ... -
Implications of fisheries-induced evolution for population recovery: Refocusing the science and refining its communication
Hutchings, Jeffrey; Kuparinen, Anna (Peer reviewed; Journal article, 2020)The argument that sufficiently high fishing mortality (selective or not) can effect genetic change in fished populations has gained considerable traction since the late 1970s. The intervening decades have provided compelling ... -
Incorporating intra-annual variability in fisheries abundance data to better capture population dynamics
McDonald, Raphaël R.; Keith, David M.; Sameoto, Jessica A.; Hutchings, Jeffrey; Flemming, Joanna Mills (Peer reviewed; Journal article, 2022)To reduce the risk of overexploitation and the ensuing conservation and socio-economic consequences, fisheries management relies on receiving accurate scientific advice from stock assessments. Biomass dynamics models used ... -
Lobster reserves as a management tool in coastal waters: Two decades of experience in Norway
Knutsen, Jan Atle; Kleiven, Alf Ring; Olsen, Esben Moland; Knutsen, Halvor; Espeland, Sigurd Heiberg; Sørdalen, Tonje Knutsen; Thorbjørnsen, Susanna Huneide; Hutchings, Jeffrey; Chacon, Albert Fernandez; Huserbråten, Mats Brockstedt Olsen; Villegas-Ríos, David; Halvorsen, Kim Aleksander Tallaksen; Kleiven, Portia Joy Nillos; Langeland, Thomas Kiland; Moland, Even (Peer reviewed; Journal article, 2022)The positive effects of reduced fishing pressure in marine protected areas (MPAs) are now well documented globally. Yet, evidence of MPA benefits from long-term replicated before-after control-impact (BACI) studies and ... -
Multiple-batch spawning as a bet-hedging strategy in highly stochastic environments: An exploratory analysis of Atlantic cod
Hocevar, Sara; Hutchings, Jeffrey; Kuparinen, Anna (Peer reviewed; Journal article, 2021)Stochastic environments shape life-history traits and can promote selection for risk-spreading strategies, such as bet-hedging. Although the strategy has often been hypothesized to exist for various species, empirical tests ... -
Multiple-batch spawning: a risk-spreading strategy disarmed by highly intensive size-selective fishing rate
Hočevar, Sara; Hutchings, Jeffrey; Kuparinen, Anna (Peer reviewed; Journal article, 2022)Can the advantage of risk-managing life-history strategies become a disadvantage under human-induced evolution? Organisms have adapted to the variability and uncertainty of environmental conditions with a vast diversity ... -
Salmon lice in the Pacific Ocean show evidence of evolved resistance to parasiticide treatment
Godwin, Sean C.; Bateman, Andrew W.; Kuparinen, Anna; Johnson, Rick; Powell, John; Speck, Kelly; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)Parasitic salmon lice (Lepeophtheirus salmonis) threaten the economic and ecological sustainability of salmon farming, and their evolved resistance to treatment with emamectin benzoate (EMB) has been a major problem for ...