Recent Submissions

  • Life history variation and growth rate thresholds for maturity in Atlantic salmon, Salmo salar 

    Hutchings, JA, and MEB Jones. 1998. "Life history variation and growth rate thresholds for maturity in Atlantic salmon, Salmo salar." Canadian journal of fisheries and aquatic sciences/Journal canadien des sciences halieutiques et aquatiques. Ottawa ON 55: 26-47.
    Based upon published and unpublished data compiled for 275 populations, large-scale spatial and temporal patterns are described in Atlantic salmon, Salmo salar, life history and these data modelled to evaluate how changes ...
  • The biological collapse of Atlantic cod off Newfoundland and Labrador: An exploration of historical changes in exploitation, harvesting technology, and management 

    HUTCHINGS, JA, and RA MYERS. 1995. "The biological collapse of Atlantic cod off Newfoundland and Labrador: An exploration of historical changes in exploitation, harvesting technology, and management." International Conference on An Island Living - Patterns of Autonomy and Dependence in the Small Islands of the North-Atlantic 3.
    No abstract available.
  • Sustaining Atlantic salmon in the northwest Atlantic: Considerations from a life history perspective 

    Hutchings, JA. 2002. "Sustaining Atlantic salmon in the northwest Atlantic: Considerations from a life history perspective." ymposium on Sustaining North American Salmon held at the American-Fisheries-Society Meeting: 60.
    No abstract available.
  • Why do fish stocks collapse? The example of cod in Atlantic Canada 

    Myers, RA, JA Hutchings, and NJ Barrowman. 1997. "Why do fish stocks collapse? The example of cod in Atlantic Canada." Ecological Applications 7(1): 91-106.
    In 1993, six Canadian populations of Atlantic cod (Gadus morhua) had collapsed to the point where a moratorium was declared on fishing. It has been argued that the collapses were caused by poor recruitment of cod to the ...
  • Biology of extinction risk in marine fishes 

    Reynolds, JD, NK Dulvy, NB Goodwin, and JA Hutchings. 2005. "Biology of extinction risk in marine fishes." Proceedings of the Royal Society B-Biological Sciences 272(1579): 2337-2344.
    We review interactions between extrinsic threats to marine fishes and intrinsic aspects of their biology that determine how populations and species respond to those threats. Information is available on the status of less ...
  • The biological and statistical significance of life-history invariants in walleye (Sander vitreus) 

    Purchase, Craig F., Jeffrey A. Hutchings, and George E. Morgan. 2006. "The biological and statistical significance of life-history invariants in walleye (Sander vitreus)." Evolutionary Ecology Research 8(2): 295-308.
    Questions: Do life-history invariants exist in walleye (Sander vitreas) and do they differ between the sexes? How does the probability of detecting life-history invariants vary with sample size? How much error is created ...
  • Fisheries assessment: what can be learned from interviewing resource users? 

    Neis, B., DC Schneider, L. Felt, RL Haedrich, et al. 1999. "Fisheries assessment: what can be learned from interviewing resource users?." Canadian Journal of Fisheries and Aquatic Sciences 56(10): 1949-1963.
    Fishers have detailed knowledge of their resources, their environment, and their fishing practices that is rarely systematically collected. We conducted three types of interviews with coastal Newfoundland fishers to ...
  • A temporally stable spatial pattern in the spawner density of a freshwater fish: evidence for an ideal despotic distribution 

    Purchase, Craig F., and Jeffrey A. Hutchings. 2008. "A temporally stable spatial pattern in the spawner density of a freshwater fish: evidence for an ideal despotic distribution." Canadian Journal of Fisheries and Aquatic Sciences 65(3): 382-388.
    We explore the causal basis for a temporally stable spatial pattern in the density of spawning individuals of a freshwater fish. Based on a comparatively long-term set of data spanning one decade, reproductively active ...
  • Body size-specific maternal effects on the offspring environment shape juvenile phenotypes in Atlantic salmon 

    Rollinson, Njal, and Jeffrey A. Hutchings. 2011. "Body size-specific maternal effects on the offspring environment shape juvenile phenotypes in Atlantic salmon." Oecologia 166(4): 889-898.
    Positive associations between maternal investment per offspring and maternal body size have been explained as adaptive responses by females to predictable, body size-specific maternal influences on the offspring's ...
  • Genetic variation in threshold reaction norms for alternative reproductive tactics in male Atlantic salmon, Salmo salar 

    Piche, Jacinthe, Jeffrey A. Hutchings, and Wade Blanchard. 2008. "Genetic variation in threshold reaction norms for alternative reproductive tactics in male Atlantic salmon, Salmo salar." Proceedings of the Royal Society Biological Sciences Series B 275(1642): 1571-1575.
    Alternative reproductive tactics may be a product of adaptive phenotypic plasticity, such that discontinuous variation in life history depends on both the genotype and the environment. Phenotypes that fall below a ...
  • Resilience and Recovery of Overexploited Marine Populations 

    Neubauer, Philipp, Olaf P. Jensen, Jeffrey A. Hutchings, and Julia K. Baum. 2013. "Resilience and Recovery of Overexploited Marine Populations." Science 340(6130): 347-349.
    Recovery of overexploited marine populations has been slow, and most remain below target biomass levels. A key question is whether this is due to insufficient reductions in harvest rates or the erosion of population ...
  • Genomic islands of divergence and their consequences for the resolution of spatial structure in an exploited marine fish 

    Bradbury, Ian R., Sophie Hubert, Brent Higgins, Sharen Bowman, et al. 2013. "Genomic islands of divergence and their consequences for the resolution of spatial structure in an exploited marine fish." Evolutionary Applications 6(3): 450-461.
    As populations diverge, genomic regions associated with adaptation display elevated differentiation. These genomic islands of adaptive divergence can inform conservation efforts in exploited species, by refining the ...
  • Inshore exploitation of Newfoundland Atlantic cod (Gadus morhua) since 1948 as estimated from mark-recapture data 

    Myers, Ransom A., Nicholas J. Barrowman, and Jeffrey A. Hutchings. 1997. "Inshore exploitation of Newfoundland Atlantic cod (Gadus morhua) since 1948 as estimated from mark-recapture data." Canadian Journal of Fisheries and Aquatic Sciences 54: 224-235.
    We use tagging studies to estimate fishing mortality (F) of inshore population of Atlantic cod (Gadus morhua) around Newfoundland. New methods have been developed for this analysis that allow fishing mrotalitites and ...
  • Hypotheses for the decline of cod in the North Atlantic 

    Myers, RA, JA Hutchings, and NJ Barrowman. 1996. "Hypotheses for the decline of cod in the North Atlantic." Marine Ecology Progress Series 138(1-3): 293-308.
    We examine alternative hypotheses for the decline of 20 cod Gadus morhua stocks in the North Atlantic. The year of the lowest observed biomass of spawners did not correspond to low juvenile survival for the cohorts that ...
  • Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon 

    Normandeau, Eric, Jeffrey A. Hutchings, Dylan J. Fraser, and Louis Bernatchez. 2009. "Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon." Evolutionary Applications 2(4): 489-503.
    Because of intrinsic differences in their genetic architectures, wild populations invaded by domesticated individuals could experience population-specific consequences following introgression by genetic material of ...
  • The relationship between offspring size and fitness: integrating theory and empiricism 

    Rollinson, Njal, and Jeffrey A. Hutchings. 2013. "The relationship between offspring size and fitness: integrating theory and empiricism." Ecology 94(2): 315-324.
    How parents divide the energy available for reproduction between size and number of offspring has a profound effect on parental reproductive success. Theory indicates that the relationship between offspring size and ...
  • Small-scale temporal and spatial variation in Atlantic cod (Gadus morhua) life history 

    McIntyre, TM, and JA Hutchings. 2003. "Small-scale temporal and spatial variation in Atlantic cod (Gadus morhua) life history." Canadian Journal of Fisheries and Aquatic Sciences 60(9): 1111-1121.
    Life histories of Atlantic cod (Gadus morhua) from the Gulf of St. Lawrence south to Georges Bank differ significantly through time and space. Within the Southern Gulf, fecundity per unit body mass differed by more than ...
  • Differences in pathogen resistance within and among cultured, conservation-dependent, and endangered populations of Atlantic salmon, Salmo salar L. 

    Lawlor, Jennifer L., Andrew Dacanay, Jeffrey A. Hutchings, Laura L. Brown, et al. 2009. "Differences in pathogen resistance within and among cultured, conservation-dependent, and endangered populations of Atlantic salmon, Salmo salar L.." Environmental Biology of Fishes 84(1): 69-78.
    We report genetic differences for resistance to the pathogen Listonella anguillarum within and among one cultured and two wild Canadian populations of Atlantic salmon, Salmo salar, using a common-garden experimental ...
  • Testing hypotheses about fecundity, body size and maternal condition in fishes 

    Koops, MA, JA Hutchings, and TM McIntyre. 2004. "Testing hypotheses about fecundity, body size and maternal condition in fishes." Fish and Fisheries 5(2): 120-130.
    Recent research suggests that maternal condition positively influences the number of eggs spawned in fishes. These studies commonly choose a priori to use body length rather than weight as an explanatory variable of ...

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